Holography and the Luxury Industry - Communication - MDPI

Page created by David Ortega
 
CONTINUE READING
Holography and the Luxury Industry - Communication - MDPI
hv
               photonics

Communication
Holography and the Luxury Industry
V. Michael Bove, Jr. *             and Nicole A. Reader

                                          Modern Mirror, Inc., New York, NY 10018, USA; nicole.reader@themodernmirror.com
                                          * Correspondence: vmbove@themodernmirror.com

                                          Abstract: The luxury goods industry and holography have a lengthy history together. In this article,
                                          we review the applications of holography to the industry and the relevant technical requirements,
                                          in particular when the hologram itself is the luxury item, when the hologram is used to promote
                                          luxury items, and when the hologram is used for authentication of luxury items. We then explore
                                          some possible scenarios for the evolution of this relationship.

                                          Keywords: holography; 3D imaging; 3D display; optical authentication; retail applications of photonics

                                          1. Introduction
                                               Holography, which embodies a three-dimensional image in a thin surface, either
                                          acting as a window to a virtual volume behind the hologram plane or projecting a 3D
                                          image in space in front of the hologram, was a groundbreaking imaging technology
                                          as well as a cultural artifact influencing thought about the intersection of physical and
                                          virtual worlds long before the arrival of the modern conceptions of augmented reality
                                          or virtual reality. A number of authors, in particular Sean Johnston [1,2], have written at
                                          length about the simultaneous scientific and artistic impact of holograms. The commercial
                                          impact of holography as a general imaging medium—as opposed to specialized technical
                                applications—has, however, been at best relatively modest.
         
                                               The luxury industry, which prizes both craftsmanship and innovation, has on multiple
Citation: Bove, V.M., Jr.; Reader, N.A.   occasions turned to holography for its unique visual experiences and/or for its technical
Holography and the Luxury Industry.       affordances. While Johnston’s books and authoritative references on holographic applica-
Photonics 2021, 8, 219. https://          tions [3,4] mention a few examples of holograms in luxury, the present authors observe
doi.org/10.3390/photonics8060219          that despite the long history, there does not appear to have been a comprehensive study
                                          published focusing on this particular field of application. In this article, we will examine
Received: 16 May 2021
                                          the history of the use of holography in this industry and the experiential and technical
Accepted: 10 June 2021
                                          requirements, then look into how some current technological developments may lead to
Published: 13 June 2021
                                          increasing use of display holography in luxury.
                                               The authors prefer to reserve the use of the word “hologram” to refer to true holograms,
Publisher’s Note: MDPI stays neutral
                                          which create a three-dimensional light field through the use of extremely fine diffraction
with regard to jurisdictional claims in
                                          patterns, but (like the general public) the industry has more often than not used the
published maps and institutional affil-
                                          term to refer to other stereoscopic or multiscopic 3D display technologies, augmented
iations.
                                          or virtual reality headsets or mobile apps, or even ethereal 2D displays such as Pepper’s
                                          Ghosts or projections onto fog screens. Indeed, a recent search of the archives of the
                                          publication Luxury Daily for articles mentioning “hologram” turned up 66 entries, none of
                                          which relates to a diffractive technology [5]. In addition to true holograms, we will also
Copyright: © 2021 by the authors.
                                          consider some notable examples of pseudo-holograms that were applied when a particular
Licensee MDPI, Basel, Switzerland.
                                          hologram-like experience was desired but true holograms were not practical.
This article is an open access article
distributed under the terms and
                                          2. Application Domains
conditions of the Creative Commons
Attribution (CC BY) license (https://
                                               The personal luxury goods industry is usually regarded as combining the sectors of
creativecommons.org/licenses/by/
                                          designer clothing and footwear, luxury bags and accessories, luxury watches and jewelry,
4.0/).                                    and luxury fragrances and cosmetics, and in fiscal 2019, had sales of US$281B [6].

Photonics 2021, 8, 219. https://doi.org/10.3390/photonics8060219                                       https://www.mdpi.com/journal/photonics
Holography and the Luxury Industry - Communication - MDPI
The personal luxury goods industry is usually regarded as combining the s
                          designer clothing and footwear, luxury bags and accessories, luxury watches and
                          and luxury fragrances and cosmetics, and in fiscal 2019, had sales of US$281B [6]
Photonics 2021, 8, 219
                               There have been three main applications of holographic technology             2 of 10
                                                                                                                      in th
                          business: where the hologram is the luxury item itself (or at least a component
                          where the hologram is used in the promotion of luxury items, and where the hol
                          used  as part
                              There haveof anti-counterfeiting
                                         been                    or traceability
                                              three main applications  of holographicof luxury   items.
                                                                                         technology     These
                                                                                                    in the luxury will be d
                          in separate
                         business:     subsections.
                                   where the hologram is the luxury item itself (or at least a component thereof),
                         where the hologram is used in the promotion of luxury items, and where the hologram is
                         used as part of anti-counterfeiting or traceability of luxury items. These will be discussed
                          2.1. Holograms as Luxury Merchandise
                         in separate subsections.
                                Foil embossed with holographic diffraction patterns (to be discussed in mo
                         2.1.
                          in Holograms as Luxuryhas
                              a later section)   Merchandise
                                                    been applied            to garments to create an iridescent effect,
                              Foil embossed    with  holographic
                          dimensional rainbow images or patterns.   diffraction patterns
                                                                                    While (toembossed
                                                                                              be discussedholograms
                                                                                                            in more detailhad bee
                         in a later section) has been applied to garments to create an iridescent effect, or three-
                          used   as  appliques     on  garments      [7], a company      called   Space
                         dimensional rainbow images or patterns. While embossed holograms had been earlier
                                                                                                          Time    was  the  first to
                          a process
                         used           for on
                               as appliques  creating
                                                 garmentsmass-produced
                                                           [7], a company calledholographic
                                                                                   Space Time wasfabrics   (including
                                                                                                     the first to develop viscose
                                                                                                                          a
                          thane)for
                         process   and   then mass-produced
                                      creating  releasing in 1989       a line of
                                                                  holographic      garments
                                                                                fabrics         based
                                                                                        (including       on and
                                                                                                    viscose  the urethane)
                                                                                                                  material [8,9].
                         and  thendrew
                          terial    releasing  in 1989attention
                                            wider      a line of garments
                                                                    when based      on the material
                                                                              it appeared             [8,9]. This Vivienne
                                                                                                in designer        material     Wes
                         drew wider attention when it appeared in designer Vivienne Westwood’s Spring/Summer
                          Spring/Summer 1998 collection (Figure 1). A newer generation of diffractive fab
                         1998 collection (Figure 1). A newer generation of diffractive fabrics has been embraced by
                          been embraced
                         fashion               by fashion
                                  in recent years;           in recent
                                                    particularly           years;
                                                                  in the Fall 2018particularly
                                                                                   season, when in suchthe  Fall 2018
                                                                                                         fabrics        season, wh
                                                                                                                  appeared
                          fabrics   appeared     in  the  runway      collections   of  numerous      designers
                         in the runway collections of numerous designers and brands including Tom Ford, Gucci,      and  brands in
                         Lanvin,  Maison
                          Tom Ford,        Margiela,
                                         Gucci,       and Off-White
                                                  Lanvin,    Maison[10].Margiela, and Off-White [10].

                          Figure
                         Figure    1. Dress
                                1. Dress mademade   from diffractive
                                              from diffractive            fabric Westwood’s
                                                               fabric in Vivienne in Vivienne Westwood’s1998
                                                                                            Spring/Summer Spring/Summer
                                                                                                             collection         19
                          tion. (Photo
                         (Photo          ©FirstVIEW/IMAXtree.com,
                                ©FirstVIEW/IMAXtree.com,                     used with permission.)
                                                              used with permission).

                              Volume reflection (Denisyuk) holograms (Figure 2) [11] have been made into earrings,
                                Volume reflection (Denisyuk) holograms (Figure 2) [11] have been made
                         pendants, watch faces, and other jewelry (Figure 3), often by holographers themselves
                          rings,than
                         rather   pendants,
                                     by jewelrywatch     faces,
                                                 companies     [12].and  other
                                                                     While      jewelry (Figure
                                                                            photopolymers            3), silver
                                                                                            or bleached   oftenhalide
                                                                                                                   by holographe
                                                                                                                        can
                          selves rather than by jewelry companies [12]. While photopolymers or bleached s
                         be used  in this application,  the  preferred   material is dichromated   gelatin   as it provides
                         particularly
                          ide can bebright
                                       usedimages
                                               in this[13], although image
                                                        application,          quality frommaterial
                                                                          the preferred     holographic    jewelry can stillgelatin
                                                                                                       is dichromated
                         be problematic because it requires direct illumination, which may not be the situation
                          vides particularly bright images [13], although image quality from holographic
                         when holograms are being worn on the body. One well-known branded example of a
                          can still bejewelry
                         holographic    problematic      because
                                                product is            it hologram-faced
                                                            a series of  requires direct    illumination,
                                                                                          watches  that Fossilwhich
                                                                                                                releasedmay
                                                                                                                         in not b
                          uation
                         the       whenaholograms
                             early 1990s;                 are
                                            reissue limited  to being    worncame
                                                                 654 watches    on the   body.
                                                                                     out in      One well-known branded
                                                                                            2019 [14].
                          of a holographic jewelry product is a series of hologram-faced watches that Fossil
                          in the early 1990s; a reissue limited to 654 watches came out in 2019 [14].
Holography and the Luxury Industry - Communication - MDPI
Photonics 2021, 8, 219                                                                                                                         3 of 10
 Photonics 2021,
 Photonics 2021, 8,
                 8, xx FOR
                       FOR PEER
                           PEER REVIEW
                                REVIEW                                                                                                          33 of
                                                                                                                                                   of 10
                                                                                                                                                      10

                                  Figure
                                   Figure2.2.
                                   Figure    2.Creating
                                                Creatingaaareflection
                                               Creating      reflectionvolume
                                                            reflection   volumehologram:
                                                                         volume   hologram:laser
                                                                                 hologram:     laserillumination
                                                                                               laser  illuminationisis
                                                                                                     illumination    isbrought
                                                                                                                        broughttoto
                                                                                                                        brought    toaaaphoto-sensitive
                                                                                                                                         photo-sensitive
                                                                                                                                         photo-sensitive
                                  plate
                                   plate from the opposite side as the object; when the resulting hologram is illuminatedwith
                                   plate from
                                           from  the
                                                   theopposite
                                                       opposite side
                                                                  sideas
                                                                       asthe
                                                                          theobject;
                                                                              object;when
                                                                                      when   the
                                                                                              theresulting
                                                                                                   resulting  hologram
                                                                                                               hologram   is illuminated
                                                                                                                            is illuminated   withwhite
                                                                                                                                             with white
                                                                                                                                                  white
                                   light
                                  light   from
                                        from      the
                                                the   same
                                                     same   side
                                                          side    as
                                                                 as  the
                                                                    the  original
                                                                        original  laser,
                                                                                 laser, a a
                                                                                          3D3D  image
                                                                                              image    ofof the
                                                                                                          the   object
                                                                                                              object isis reconstructed.
                                                                                                                        reconstructed.
                                   light from the same side as the original laser, a 3D image of the object is reconstructed.

                                   Figure 3.
                                   Figure  3. Couture 18K
                                                      18K gold ring
                                                                ring set with
                                                                           with diamonds, opal,
                                                                                           opal, and
                                                                                                 and aa dichromated
                                                                                                        dichromated gelatin
                                                                                                                      gelatin reflection
                                                                                                                              reflection hol-
                                                                                                                                         hol-
                                  Figure  3. Couture
                                              Couture 18Kgold
                                                           gold ringset set withdiamonds,
                                                                                  diamonds, opal,   and a dichromated    gelatin reflection
                                   ogram  encapsulated
                                   ogram encapsulated   in fused
                                                        in fused  silica.
                                                                  silica. Created
                                                                          Created  by Mirasety,
                                                                                   by Mirasety, a collaboration
                                                                                                a collaboration of Francesco
                                                                                                                of Francesco   Mazzero,
                                                                                                                               Mazzero,  Mi-
                                                                                                                                         Mi-
                                  hologram    encapsulated in fused   silica. Created by Mirasety, a collaboration  of Francesco   Mazzero,
                                   chael Crawford,  and  August  Muth.     (Courtesy Mirasety, photo   by Francesco
                                   chael Crawford, and August Muth. (Courtesy Mirasety, photo by Francesco Mazzero.) Mazzero.)
                                  Michael Crawford, and August Muth (Courtesy Mirasety, photo by Francesco Mazzero).
                                   2.2.Holograms
                                   2.2.
                                  2.2.   Hologramsin
                                         Holograms   inLuxury
                                                     in  LuxuryMerchandise
                                                        Luxury     MerchandisePromotion
                                                                  Merchandise      Promotion
                                                                                   Promotion
                                          Creditedasas
                                          Credited
                                         Credited    asthe
                                                        thefirst
                                                        the  first
                                                             first successful
                                                                   successful
                                                                 successful       use
                                                                                  use
                                                                                use    of
                                                                                    of of  holography
                                                                                           holography
                                                                                       holography         to promote
                                                                                                          to promote
                                                                                                      to promote         luxury
                                                                                                                         luxury
                                                                                                                     luxury       merchandise,
                                                                                                                                  merchandise,
                                                                                                                              merchandise,     a 50-aa
                                   50-by-60
                                   50-by-60
                                  by-60        cm  pulsed-laser
                                              cm pulsed-laser
                                          cm pulsed-laser           transmission
                                                                   transmission
                                                             transmission             hologram
                                                                                      hologram
                                                                                hologram           of
                                                                                            of theof  the  Leith
                                                                                                      the and
                                                                                                   Leith   Leith   and  Upatnieks
                                                                                                                  and Upatnieks
                                                                                                                Upatnieks             type  (Figure
                                                                                                                                     type (Figure
                                                                                                                             type (Figure    4) [15]
                                   4)
                                   4)  [15]
                                      [15]  was
                                            was   made
                                                  made    for
                                                          for  Cartier
                                                              Cartier     in
                                                                          in  1972
                                                                              1972  by
                                                                                    by  G.
                                                                                        G.  Robert
                                                                                            Robert   Schinella
                                                                                                     Schinella    at
                                                                                                                 at  McDonnell
                                                                                                                     McDonnell
                                  was made for Cartier in 1972 by G. Robert Schinella at McDonnell Douglas Missouri, show-          Douglas
                                                                                                                                    Douglas     Mis-
                                                                                                                                               Mis-
                                   souri,
                                   souri,
                                  ing      showing
                                           showinghand
                                        a woman’s     a  woman’s
                                                      a woman’s
                                                             wearing  hand
                                                                     hand     wearing    a
                                                                              wearing ring
                                                                          a diamond        diamond
                                                                                        a diamond      ring  and
                                                                                                       ring and
                                                                                              and holding          holding   a diamond
                                                                                                                  holding bracelet
                                                                                                              a diamond      a diamond     bracelet
                                                                                                                                           bracelet
                                                                                                                                        (Figure   5).
                                   (Figure
                                   (Figure
                                  This       5).
                                         was5).  This was
                                                 This
                                              mounted   was   mounted
                                                           inmounted
                                                               the window   in the
                                                                            in the  window
                                                                                 of window
                                                                                    Cartier’sof of Cartier’s
                                                                                                   Cartier’s
                                                                                                Fifth  Avenue  Fifth
                                                                                                               Fifth  Avenue
                                                                                                                      Avenue
                                                                                                                  location       location
                                                                                                                             in location
                                                                                                                                 New       in City,
                                                                                                                                           in
                                                                                                                                        York   New
                                                                                                                                               New
                                   York
                                  and
                                   York    City, and
                                        because
                                          City,  and  because
                                                  of this        ofhologram’s
                                                           sort of
                                                      because    of  this sort
                                                                     this   sort of
                                                                                 of requirement
                                                                                     hologram’s requirement
                                                                                    hologram’s     requirement      for aa monochromatic
                                                                                                    for a monochromatic
                                                                                                                    for    monochromatic
                                                                                                                               light source, waslight
                                                                                                                                               light
                                   source, was
                                  illuminated
                                   source,   wasbyilluminated
                                                     a mercuryby
                                                  illuminated     by
                                                                   arcaa lamp.
                                                                          mercury
                                                                         mercury     arc
                                                                                 Thearc  lamp.
                                                                                      hand       The hand
                                                                                             appeared
                                                                                         lamp.   The   hand   appeared
                                                                                                          36 cm   forward
                                                                                                             appeared      36on
                                                                                                                           36 cmthe
                                                                                                                              cm   forward
                                                                                                                                     window
                                                                                                                                  forward    on[1]
                                                                                                                                             on   the
                                                                                                                                                  the
                                   window
                                  (pp.
                                   window     [1] (pp.
                                         352–353).
                                              [1] (pp. 352–353).
                                                        352–353).
                                         Another store-window appearance of holography in the luxury jewelry domain that is
                                  regarded as iconic by many holographers came in conjunction with the late-1986 opening
                                  of Tiffany’s on Old Bond Street in London. The company Holovision was commissioned
                                  to produce a holographic homage to the well-known scene from the film Breakfast at
                                  Tiffany’s. In the hologram, the woman at the table wears a necklace by Paloma Picasso
                                  and is surrounded by Tiffany’s merchandise. Design work was by holographer Martin
                                  Richardson and the 50-by-60 cm image was captured in the pulsed-laser studio at the Royal
                                  College of Art and then transferred to a white-light-viewable transmission plate that was
                                  back-illuminated by a spotlight and placed in the shop window.
Holography and the Luxury Industry - Communication - MDPI
Photonics 2021, 8, x FOR PEER REVIEW                                                                                                                               4 of 1

   Photonics 2021, 8, x FOR PEER REVIEW                                                                                                              4 of 10
  Photonics 2021, 8, 219                                                                                                                              4 of 10

                                    Figure
                                     Figure4.
                                    Figure     Creating
                                            4.4.Creating
                                                  Creating and
                                                           and andviewing   an off-axis
                                                                      viewing
                                                                 viewing    an  off-axis  transmission
                                                                                 an off-axis               hologram:
                                                                                                transmission
                                                                                         transmission     hologram:      photo-sensitive
                                                                                                                   hologram:               materialreceives
                                                                                                                                 photo-sensitive
                                                                                                                        photo-sensitive   material     receives
                                                                                                                                                        material receive
                                    an
                                     aninterference
                                        interference
                                         interference   pattern
                                                        pattern
                                                          pattern   between
                                                                   between
                                                                       betweenaareference
                                                                                 reference
                                                                                   a referencebeam
                                                                                            beam     andlight
                                                                                                   and
                                                                                                   beam      light
                                                                                                            and     reflected
                                                                                                                 reflected
                                                                                                                   light       from
                                                                                                                            from  an an
                                                                                                                          reflected      object.
                                                                                                                                      object.
                                                                                                                                      from     When
                                                                                                                                              an    When     the
                                                                                                                                                        the When
                                                                                                                                                  object.   re-     the re
                                    sulting
                                     sultinghologram
                                    resulting   hologram
                                               hologram   is illuminated
                                                             is
                                                              is illuminated
                                                                  illuminatedwith  thethe
                                                                                 with
                                                                                  with same
                                                                                         the   wavelength
                                                                                            same
                                                                                              same wavelength
                                                                                                      wavelengthof monochromatic
                                                                                                                    of monochromatic  lightlight
                                                                                                                        of monochromatic     at the
                                                                                                                                                  at same
                                                                                                                                                      theat
                                                                                                                                                  light     po-
                                                                                                                                                          same
                                                                                                                                                            the same po
                                    sition
                                     sitionasas
                                    position  the
                                              as thereference
                                                  the reference
                                                      reference beam,
                                                                    beam,a 3D
                                                                     beam,   aimage
                                                                           a 3D  image
                                                                                3D    ofofthe
                                                                                    image    ofobject
                                                                                            the       isisreconstructed
                                                                                                 object
                                                                                                 the object reconstructed   and
                                                                                                                             andvisible
                                                                                                                is reconstructed     andthrough
                                                                                                                                  visible  visiblethe
                                                                                                                                          through     theplate.
                                                                                                                                                          plate. the plat
                                                                                                                                                      through

                                    Figure 5. Pulsed-laser hologram made for Cartier window display, 1972. (Photo credit: MIT Mu-
                                    seum, gift of Marian B. Javits, photo by Barry Heatherington.)

                                     Figure5.5.Pulsed-laser
                                    Figure       Pulsed-laser    hologram
                                                             hologram   mademade    for Cartier
                                                                              for Cartier windowwindow
                                                                                                display,  display,
                                                                                                         1972      1972.
                                                                                                              (Photo credit:(Photo credit: MIT Mu
                                                                                                                              MIT Museum,
                                          Another store-window         appearance   of holography  in the  luxury jewelry    domain  that
                                     seum,
                                    gift of  gift ofB.Marian
                                            Marian     Javits, B. Javits,
                                                               photo by   photo
                                                                         Barry   by Barry Heatherington.)
                                                                               Heatherington).
                                    is regarded as iconic by many holographers came in conjunction with the late-1986 open-
                                    ing of Tiffany’s on Old Bond Street in London. The company Holovision was commis-
                                          Unlike the store-window
                                                         scene in the film, the hologram            showed the woman          from the    back, and
                                    sionedAnother
                                              to produce a holographicappearance
                                                                               homage to the    ofwell-known
                                                                                                   holography        in the
                                                                                                                  scene  fromluxury    jewelry
                                                                                                                                the film   Breakfastdomain tha
                                    The British Journal of Photography reported at the time, “It is apparently driving the
                                     is regarded      as  iconic   by   many     holographers         came   in  conjunction
                                    at Tiffany’s. In the hologram, the woman at the table wears a necklace by Paloma Picasso      with   the  late-1986   open
                                    Tiffany staff gently mad because people keep coming into the shop wanting to see the
                                     ing is
                                    and    ofsurrounded
                                               Tiffany’s on  by Old     Bondmerchandise.
                                                                  Tiffany’s      Street in London.          The company
                                                                                                  Design work                   Holovision
                                                                                                                   was by holographer             was commis
                                                                                                                                              Martin
                                    other side—the girl’s face. This of course is exactly what it was designed to do—get people
                                     sioned
                                    Richardson
                                    in.” [16]. to  produce     a  holographic
                                                    and the 50-by-60       cm image homage       to  the
                                                                                          was captured    well-known       scene
                                                                                                             in the pulsed-laser   from    the
                                                                                                                                      studio   atfilm
                                                                                                                                                    theBreakfas
                                    Royal    College
                                     at Tiffany’s.      of  Art and
                                                       In the maker
                                          In 1989, hosiery             then
                                                                hologram,     transferred    to  a  white-light-viewable
                                                                                the woman atHolographics
                                                                         Hue commissioned            the table wears           transmission
                                                                                                                          a necklace
                                                                                                                      North                     plate
                                                                                                                                          by Paloma
                                                                                                                              at an estimated      cost Picass
                                    that
                                     and
                                    of    was   back-illuminated
                                            is surrounded
                                        $10,000                       by  a
                                                                 by Tiffany’s
                                                  to create a 76-by-102      spotlight    and
                                                                                    merchandise.
                                                                             cm transmission    placed   in the shop
                                                                                                         Design rainbow
                                                                                                     white-light        window.
                                                                                                                    work was       by holographer
                                                                                                                               hologram     showing Marti
                                          Unlike
                                     Richardson
                                    several         the
                                                      andscene
                                                             thein50-by-60
                                              angle-multiplexed     the  film, of
                                                                      images     thea leg
                                                                                 cm   hologram
                                                                                       image
                                                                                           model wasshowed
                                                                                                    in         the
                                                                                                        captured
                                                                                                       tights.  Thiswoman
                                                                                                                      in the
                                                                                                                       was    from   the
                                                                                                                                       as back,
                                                                                                                               pulsed-laser
                                                                                                                           installed               and
                                                                                                                                                  studio
                                                                                                                                          a point-of-     at th
                                    The
                                    sale  British
                                          display  Journal
                                                    in       of Photography
                                                        Bloomingdale’s      in  Newreported
                                                                                        York   at
                                                                                              Citythe  time,
                                                                                                     [17].    “It is apparently    driving   the   Tif-
                                     Royal College of Art and then transferred to a white-light-viewable transmission plat
                                    fany Because
                                           staff gently
                                                     of itsmad
                                                            cost,because   people
                                                                  complexity,     andkeep   coming
                                                                                        rarity,        into theportraiture
                                                                                                holographic      shop wanting      tosort
                                                                                                                              of the  see discussed
                                                                                                                                           the other
                                     that was back-illuminated by a spotlight and placed in the shop window.
                                    aboveUnlike
                                         might itself be considered
                                                the scene           a luxury
                                                           in the film,      good. In recent
                                                                        the hologram   showedyears
                                                                                                thedigital
                                                                                                    woman  holograms
                                                                                                              from the(toback, an
                                     The British Journal of Photography reported at the time, “It is apparently driving the Tif
                                     fany staff gently mad because people keep coming into the shop wanting to see the othe
Holography and the Luxury Industry - Communication - MDPI
of $10,000 to create a 76-by-102 cm transmission white-light rainbow hologram showin
                          several angle-multiplexed images of a leg model in tights. This was installed as a point
                          of-sale display in Bloomingdale’s in New York City [17].
                                Because of its cost, complexity, and rarity, holographic portraiture of the sort dis
Photonics 2021, 8, 219                                                                                                        5 of 10
                          cussed above might itself be considered a luxury good. In recent years digital hologram
                          (to be discussed below) have been used for portraiture in addition to pulsed laser analo
                          holograms [3] (pp. 306–312) [4] (pp. 512–515). Perhaps the best known example is a 200
                         be  discussed
                          digital        below) have
                                   holographic            beenofused
                                                    portrait           for portraiture
                                                                   Queen     Elizabeth IIincaptured
                                                                                             addition tobypulsed      laser analog
                                                                                                            holographer       Rob Munda
                         holograms
                          as 205 parallax images, this also appeared as an embossed hologram (toisbe
                                      [3]  (pp. 306–312)    [4] (pp. 512–515).     Perhaps  the best known    example        a 2004
                                                                                                                                discussed i
                         digital holographic portrait of Queen Elizabeth II captured by holographer Rob Munday as
                          the following section) on a 2012 £10 postage stamp issued by Jersey Post [4] (p. 612).
                         205 parallax images, this also appeared as an embossed hologram (to be discussed in the
                                The development of full-color digital holographic printing in the late 1990s and earl
                         following section) on a 2012 £10 postage stamp issued by Jersey Post [4] (p. 612).
                          2000s,
                               Thewith   its abilityoftofull-color
                                    development           create arbitrarily      large white-light-viewable
                                                                   digital holographic     printing in the late 1990sreflection   hologram
                                                                                                                          and early
                         2000s, with its ability to create arbitrarily large white-light-viewable reflection holograms model
                          without    the  need    of a  holography      studio—only       requiring    3D  computer        graphics
                          or sets of
                         without   the2D
                                       need parallax    views of studio—only
                                              of a holography      scenes—greatly        increased
                                                                                    requiring         the potential
                                                                                               3D computer      graphics availability
                                                                                                                            models of ho
                         or  sets of 2D
                          lography    as aparallax    views of
                                             promotional         scenes—greatly
                                                              medium                  increased However,
                                                                           [4] (pp. 507–511).    the potential  so availability    of
                                                                                                                    far, this process  doe
                         holography    as  a promotional     medium    [4]  (pp. 507–511).  However,    so far, this
                          not appear to have been much used in the luxury goods business, one example application     process  does
                         not  appear to have beenbeing
                          in apparel/footwear         much used     in the
                                                              a series   ofluxury    goods business,
                                                                             large display             one example
                                                                                               holograms     by XYZapplication
                                                                                                                          Imaging in 2005
                         in apparel/footwear being a series of large display holograms by XYZ Imaging in 2005.
                          Three 1-by-1.2 m prints and one 1-by-1.5 m print were produced for Puma’s campaign fo
                         Three 1-by-1.2 m prints and one 1-by-1.5 m print were produced for Puma’s campaign for
                          their Ferrari branded footwear and placed in two Montreal Foot Locker stores during th
                         their Ferrari branded footwear and placed in two Montreal Foot Locker stores during the
                          MontrealGrand
                         Montreal     Grand     Prix
                                              Prix in in  June
                                                       June  20052005   (Figure
                                                                   (Figure         6). Imagery
                                                                              6). Imagery        included
                                                                                            included          close-ups
                                                                                                       close-ups    of shoesof with
                                                                                                                               shoes with
                          racetrack   in   the  background,       and   a  car  morphing      into a  shoe.   In
                         a racetrack in the background, and a car morphing into a shoe. In a similar promotional  a  similar   promotiona
                          campaignforfor
                         campaign            Nike,
                                         Nike,   fourfour  large-format
                                                       large-format           holograms
                                                                      holograms             were produced
                                                                                    were produced                for the store
                                                                                                     for the Niketown       Niketown
                                                                                                                                  on   stor
                          on Oxford
                         Oxford   StreetStreet  in London
                                          in London     [18]. [18].

                         Figure6.6.Digital
                         Figure     Digital  holographic
                                           holographic    print
                                                       print     of Ferrari
                                                             of Ferrari shoes,shoes, 2005. (Courtesy
                                                                               2005 (Courtesy        GeolaUAB).
                                                                                              Geola Digital Digital UAB.)

                               When
                                 Whenholography
                                         holography  is mentioned,
                                                        is mentioned,fashion writers
                                                                          fashion     often often
                                                                                   writers   recall supermodel  Kate Moss’
                                                                                                    recall supermodel   Kate Moss
                         virtual, ethereal appearance at Alexander McQueen’s autumn/winter 2006 “Windows
                          virtual, ethereal appearance at Alexander McQueen’s autumn/winter 2006 “Windows o
                         of Culloden” collection show in Paris (Figure 7), though that was actually a pyramidal
                          Culloden” collection show in Paris (Figure 7), though that was actually a pyramidal con
                         configuration of the 19th-century stage illusion called a Pepper’s Ghost rather than an
                          figuration
                         actual         of the
                                  hologram     19th-century
                                             [19]. McQueen had stage   illusion interest
                                                                   a continued   called ainPepper’s   Ghost rather
                                                                                            holographic-style        than an actua
                                                                                                               experiences;
                          hologram
                         for  example[19].    McQueentohad
                                         the invitation     his aspring/summer
                                                                   continued interest      in holographic-style
                                                                                    2009 show    was a lenticular experiences;
                                                                                                                   portrait      fo
                          example     the  invitation   to his spring/summer       2009  show    was   a lenticular
                         (incorrectly described in the press as a hologram) in which the designer’s face morphs intoportrait (incor
                         arectly   described
                            stylized skull [20].in the press as a hologram) in which the designer’s face morphs into
                               Thereskull
                          stylized     are several
                                            [20]. possible geometries for Pepper’s Ghosts; when a virtual model is to
                         share a stage with a live model, the setup in Figure 8 is commonly employed [21]. When
                         based on 2D video projections, as in the examples discussed here, the images are flat rather
                         than 3D, and work best for stationary viewers at distances where 3D visual cues do not
                         operate strongly.
Holography and the Luxury Industry - Communication - MDPI
Photonics 2021, 8, 219                                                                                                                     6 of 10
 Photonics 2021, 8, x FOR PEER REVIEW                                                                                                       6 of 10

                            Figure 7. “Holographic” (actually Pepper’s Ghost) model in 2006 Alexander McQueen show. (Photo
                            ©FirstVIEW/IMAXtree.com, used with permission.)

                                 There are several possible geometries for Pepper’s Ghosts; when a virtual model is
                            to share a stage with a live model, the setup in Figure 8 is commonly employed [21]. When
                            based on 2D video projections, as in the examples discussed here, the images are flat rather
                            than 3D, and work best for stationary viewers at distances where 3D visual cues do not
                            operate  strongly.
                                  Figure
                                 Figure  7.7.“Holographic”
                                             “Holographic”(actually
                                                           (actuallyPepper’s
                                                                    Pepper’sGhost)
                                                                             Ghost)model
                                                                                   modelinin 2006
                                                                                             2006 Alexander
                                                                                                  Alexander McQueen
                                                                                                            McQueenshow
                                                                                                                    show.(Photo
                                                                                                                          (Photo
                                  ©FirstVIEW/IMAXtree.com,used
                                 ©FirstVIEW/IMAXtree.com, usedwith
                                                               withpermission).
                                                                   permission.)

                                        There are several possible geometries for Pepper’s Ghosts; when a virtual model is
                                   to share a stage with a live model, the setup in Figure 8 is commonly employed [21]. When
                                   based on 2D video projections, as in the examples discussed here, the images are flat rather
                                   than 3D, and work best for stationary viewers at distances where 3D visual cues do not
                                   operate strongly.

                                  Figure 8. Pepper’s Ghost illusion based on projector and tilted beamsplitting mirror, showing how a
                                  real and a virtual person can appear to share a stage. From [21].
                            Figure 8. Pepper’s Ghost illusion based on projector and tilted beamsplitting mirror, showing how
                            a real and a virtual person can appear to share a stage. From [21].
                                        It was not long before “hologram” fashion exhibitions went from luxury to mainstream.
                                 A year after the Alexander McQueen show, retailer Target staged an all-Pepper’s-Ghost
                                 It was not long before “hologram” fashion exhibitions went from luxury to main-
                                 show in New York City’s Grand Central Station [22]. However, Pepper’s Ghosts have
                            stream. A year after the Alexander McQueen show, retailer Target staged an all-Pepper’s-
                                 continued to feature in luxury goods exhibition; recent examples include a display at the
                            Ghost show in New York City’s Grand Central Station [22]. However, Pepper’s Ghosts
                                 2017 Los Angeles premiere of the film The Last Jedi of Christian Louboutin shoe designs
                            have continued to feature in luxury goods exhibition; recent examples include a display
                                 inspired by the heroines of the Star Wars films [23], and a 2018 Christian Dior show in
                            at theFigure
                                    2017 Los      Angeles premiere
                                            8. Pepper’s                   ofbased
                                                                              the film   The Last    Jedi of beamsplitting
                                                                                                               Christian Louboutin      shoe how
                                 Shanghai       in whichGhost     illusion
                                                            68 models    captured  onon
                                                                                      projector
                                                                                         video at and
                                                                                                    thetilted
                                                                                                         Musee d’Orsay inmirror,     showing
                                                                                                                               Paris were  shown
                            designs
                                 on a 30 m-long stage with 20 projectors [24]. When based on 2D video projections,Dior
                                  a   inspired
                                     real and    a  by  the
                                                   virtual   heroines
                                                            person  can  of  the
                                                                        appear    Star
                                                                                 to    Wars
                                                                                    share  a    films
                                                                                             stage.    [23],
                                                                                                    From      and
                                                                                                            [21].    a 2018 Christian    as in the
                            showabove
                                   in Shanghai
                                           examples,  in which    68 models
                                                         the images     are notcaptured
                                                                                  3D, and on workvideo
                                                                                                    bestatforthe   Musee d’Orsay
                                                                                                               stationary   viewersinatParis
                                                                                                                                        distances
                                         It was not long before “hologram” fashion exhibitions went from luxury to main-
                                 where 3D visual cues do not operate strongly.
                                  stream.
                                        TheA      year“hologram”
                                               term     after the Alexander
                                                                       has also McQueen
                                                                                  been moreshow,       retailer
                                                                                                recently          Target stagedapplied
                                                                                                            and inaccurately      an all-Pepper’s-
                                                                                                                                          to other
                                  Ghost show in New
                                 non-holographic           luxuryYork  City’s Grand
                                                                     experiences     suchCentral    Station
                                                                                            as virtual        [22]. However,
                                                                                                          or augmented           Pepper’s
                                                                                                                            reality         Ghosts
                                                                                                                                    applications
                                  have    continued      to  feature   in luxury    goods    exhibition;    recent   examples
                                 that allow viewing merchandise from a variable viewpoint, visualizing it in the user’s         include  a display
                                  at the 2017 Los
                                 environment,            Angeles premiere
                                                      or virtually   trying it onof (for
                                                                                     the example,
                                                                                          film The shoes
                                                                                                      Last Jedi     of Christian
                                                                                                              or eyewear)    [25].Louboutin shoe
                                  designs
                                        These non-diffractive approaches are worth discussing in this context asChristian
                                               inspired     by  the  heroines   of  the  Star  Wars    films   [23],  and a  2018   they point Dior
                                                                                                                                                to
                                  show     in   Shanghai     in  which   68  models    captured     on  video     at the
                                 some characteristics desired by the luxury goods industry: the imagery should be moving Musee   d’Orsay   in Paris
Holography and the Luxury Industry - Communication - MDPI
Photonics 2021, 8, 219                                                                                             7 of 10

                         and actual size (or larger), there should be no obvious display system but rather the
                         imagery should appear in a physical environment, and the display should be deployable
                         on a fashion show runway, in a retail setting, or (in the case of AR apps) in the user’s
                         environment. For holography to supplant displays like Pepper’s Ghosts it will have to
                         develop in these directions.

                         2.3. Holograms as Authentication Devices
                              Losses in the luxury goods market due to counterfeit merchandise were estimated at
                         US$98B in 2017 [26]. An ideal authentication technology would be one that is inexpensive
                         to manufacture but difficult and expensive to duplicate, that cannot be removed or altered
                         without obvious damage, and whose validity can be quickly verified. Authentication
                         technologies are commonly classified into overt and covert categories, the former of which
                         can be authenticated without any specialized equipment or process and the latter requiring
                         some external apparatus for verification. Currency, for example, typically has a combi-
                         nation of overt and covert features. Because of the fine detail and physical properties
                         of diffraction patterns, holograms can provide both a quickly recognizable and colorful
                         3D visual appearance and any of a number of hidden properties including text at a scale
                         of tens of microns, images that appear only when a laser is used for illumination, and
                         machine-readable data patterns. Holograms with both covert and overt features have been
                         used by the luxury goods industry at least since the early 2000s when Fendi, Gucci, and
                         others began adding holographic labels to merchandise [27]. Chanel bags are individually
                         numbered and since 2000, the label has incorporated a holographically-patterned film
                         over the conventionally-printed serial number to increase the difficulty of counterfeiting;
                         numerous websites explain how to authenticate these labels (e.g., [28]).
                              Because a diffraction pattern may be created by varying the thickness of a transparent
                         material, it is possible to mass produce phase holograms inexpensively by a hot-stamping
                         process. The first step is the creation of a surface-relief holographic pattern, typically in a
                         photoresist material exposed with a deep-blue laser. Because photoresists are too soft to be
                         used directly for stamping, nickel is electrically deposited on the original hologram and
                         the resulting metal layer can be applied as a stamping die, or for high volume production
                         further replicated many times to make a set of identical stamping dies. The stamper is
                         heated and used to impress the holographic pattern onto a transparent or foil-backed thin
                         plastic layer. More detail on the process is given in [29]. Readers will likely be familiar with
                         the appearance of this sort of hologram as an anti-counterfeiting feature on credit cards.
                              Since for overt authentication the hologram must be viewable under white light,
                         traditionally the source phase hologram is a “rainbow” hologram of the type first developed
                         by Benton; the original process for making these involves first creating a standard off-axis
                         transmission hologram of the subject matter and then making a second hologram of the first
                         hologram illuminated through a slit aperture [30]. These holograms are bright but exhibit
                         parallax in only the horizontal direction and the monochromatic image color changes
                         with vertical viewing position; it is possible to create these holograms with multiple
                         simultaneous hues though viewer-position-independent true-color imagery is not practical
                         when this form of hologram is created optically.
                              Almost as soon as embossed holograms were commercialized, techniques for illicitly
                         replicating them were developed, and an “arms race” between counterfeiters and the
                         developers of authentication holograms has been underway since the late 1980s [31].
                              While some of the source holograms for authentication tags continue to be produced
                         using traditional “analog” exposure methods and physical objects, typically the phase
                         hologram used for the stamping die is now created by other means. Dot matrix hologram
                         printers use interference to generate an array of microscopic diffractive patches whose
                         orientations and spatial frequencies can be varied, allowing the creation of true-color
                         patterns [32], while e-beam lithography can be used to write arbitrary computer-generated
                         diffraction patterns directly, giving a maximum degree of flexibility of imagery [33].
Holography and the Luxury Industry - Communication - MDPI
Photonics 2021, 8, 219                                                                                                        8 of 10

                                        All of the above mass-production techniques have the limitation that the holograms
                                   produced are identical; the company Optrace has developed a system that can print
                                   serialized security holograms for luxury goods and other products in photopolymer at the
                                   rate of 10,000 holograms/hour and has also demonstrated the incorporation of unique QR
                                   codes and covert features [34].

                                   3. Discussion: Looking Forward
                                           With respect to display holography, fashion and other luxury goods applications have
                                     aimed for unique, creative, and innovative visual experiences, using other technologies
                                     when true holography could not be employed. Ongoing development of digital holog-
                                     raphy and some parallel technological advances in other fields should permit a broader
                                     applicability of diffractive displays in coming years.
                                           Even for still images, scene capture has always been a limiting factor for commercial
                                     holography. In the analog case, powerful lasers are needed to illuminate the scene and
                                     items in the scene cannot move during the exposure more than a small fraction of the
                                     wavelength of the light; this means that particularly for scenes with human models or even
                                     just fabrics, pulsed-laser exposure is required, and there have never been more than a few
                                     commercial pulsed-laser holographic studios in operation at any given time. Additionally,
                                     exposure and processing of very large photographic plates creates further complications.
                                     Digital holographic prints relax these limitations, as they can scale to large sizes (full-size
                                     prints of cars have been made, for example) and can be generated from a dense array
                                     of 2D parallax views (still a bit of a photo-studio challenge) or from 3D models of the
                                     scene [35]. At the time of the initial development and commercial push of holographic
                                     printing, though, computer graphics models of human figures and of luxury merchandise
                                     were not widely available and computational requirements made drape simulations of
                                     garments a challenge.
                                           More recently, submillimeter-accurate body scanning has enabled the creation of
                                     extremely realistic poseable and animatable human body models (Figure 9) and advances
                                     in graphics processors have meant that ultra-realistic dynamic simulation of the mechanical
                                     and optical properties of garments and accessories has become possible even on PCs.
                                     Modern Mirror is able to capture textured 3D meshes of fashion models or of shoppers,
                                     dress them with digital versions of real merchandise, and render the results in real time [36].
Photonics 2021, 8, x FOR PEER REVIEW Because of the underlying high-quality 3D data, this sort of process is suited for 3D 9displays
                                                                                                                             of 10

                                     such as digital holograms as well as 2D images.

                               Figure 9. Virtual
                                  Figure          fashion:
                                           9. Virtual       stills
                                                      fashion:     from
                                                                stills    anan
                                                                       from  animated
                                                                               animatedvideo
                                                                                         videorendered
                                                                                               renderedfrom
                                                                                                        from3D
                                                                                                             3D body
                                                                                                                body scan and 3D
                                                                                                                     scan and 3Dgarment
                                                                                                                                  gar-
                               ment model.    (Courtesy   Modern     Mirror,  Inc. New York,  NY  10018, USA.; garment design  by
                                  model (Courtesy Modern Mirror, Inc. New York, NY 10018, USA; garment design by Noe Bernacelli). Noe
                               Bernacelli.)

                                    Though the rapidly growing amount of 3D imagery means that there will likely be
                               more use of holographic prints in the luxury goods world in the near future, the ultimate
                               goal remains a dynamic holographic display. Holographic video displays have existed for
Holography and the Luxury Industry - Communication - MDPI
Photonics 2021, 8, 219                                                                                                             9 of 10

                                       Though the rapidly growing amount of 3D imagery means that there will likely be
                                  more use of holographic prints in the luxury goods world in the near future, the ultimate
                                  goal remains a dynamic holographic display. Holographic video displays have existed for
                                  many years, and like holographic prints, they do not require scene capture with coherent
                                  light sources but rather can create diffraction patterns from 3D models or parallax image
                                  sets [37]. Because of the requirement for submicron-scale pixels in the display device,
                                  inexpensively scaling up the necessary electro-optic components (in particular, diffractive
                                  spatial light modulators) to the sizes of the still hologram and Pepper’s Ghost examples
                                  described above continues to be a topic for research and development. In the meantime,
                                  luxury brands have begun exploring the use of non-holographic light field 3D displays [38];
                                  the same data sources used for those displays can be used to generate digital holographic
                                  video as well when suitable displays reach the market.

                                  Author Contributions: Conceptualization, V.M.B.J. and N.A.R.; investigation, V.M.B.J. and N.A.R.;
                                  writing—original draft preparation, V.M.B.J. and N.A.R.; writing—review and editing, V.M.B.J. and
                                  N.A.R. All authors have read and agreed to the published version of the manuscript.
                                  Funding: This research received no external funding.
                                  Acknowledgments: The authors wish to thank the following individuals for their assistance with
                                  the preparation of this article: Patrick Boyd, Michael Crawford, David Brotherton-Ratcliffe, Joy Javits,
                                  Sean Johnston, Sam Moree, August Muth, Martin Richardson, Seth Riskin and colleagues at the MIT
                                  Museum, Jonathan Ross, and Richard Sharpe.
                                  Conflicts of Interest: The authors declare no conflict of interest.

References
1.    Johnston, S.F. Holographic Visions: A History of New Science; Oxford University Press: Oxford, UK, 2006.
2.    Johnston, S.F. Holograms: A Cultural History; Oxford University Press: Oxford, UK, 2016.
3.    Saxby, G.; Zacharovas, S. Practical Holography; CRC Press: Boca Raton, FL, USA, 2016.
4.    Bjelkhagen, H.; Brotherton-Ratcliffe, D. Ultra-Realistic Imaging; CRC Press: Boca Raton, FL, USA, 2013.
5.    Luxury Daily. Available online: https://www.luxurydaily.com/?s=hologram (accessed on 27 April 2021).
6.    Deloitte Global. Global Powers of Luxury Goods 2020. Available online: https://www2.deloitte.com/content/dam/Deloitte/at/
      Documents/consumer-business/at-global-powers-luxury-goods-2020.pdf (accessed on 15 March 2021).
7.    Walash, E. Holograms Beam Into Fashion. WWD, 5 December 1988; Volume 156.
8.    Sharpe, R.A.; Manners, M.J. Holographic Image Containing Foil-Textile Laminate. U.S. Patent 5,593,765, 14 January 1997.
9.    Sharpe, R.A.; Zenessex, Essex, UK. Personal communication, 2021.
10.   Brannigan, M. Designers want you coated in shimmery, holographic iridescence for fall. Fashionista, 2 March 2018. Available online:
      https://fashionista.com/2018/03/fashion-week-fall-2018-trend-iridescent-holographic-fabric (accessed on 15 March 2021).
11.   Denisyuk, Y.N. On the Reproduction of the Optical Properties of an Object by the Wave Field of its Own Scattered Radiation. Opt.
      Spectrosc. 1963, 18, 365–368.
12.   Bold, K. Lighter Side of Jewelry: With Holograms Adorning Traditional Accessories, Finery Takes on a 3rd Dimension. Los
      Angeles Times, 5 June 1992.
13.   Rallison, R.D. The History of Dichromates. Available online: https://wasatchphotonics.com/wp-content/uploads/The-History-
      of-Dichromates1.pdf (accessed on 1 May 2021).
14.   Murphy, M. It All Began with a Hologram. The New York Times, 23 November 2019.
15.   Leith, E.N.; Upatnieks, J. Wavefront Reconstruction with Diffused Illumination and Three-Dimensional Objects. J. Opt. Soc. Amer.
      1964, 54, 1295–1301. [CrossRef]
16.   Rix, J. Exposure. The British Journal of Photography, 13 March 1987.
17.   Edelson, S. Hologram casts hue in fashion. Adweek’s Marketing Week, 9 October 1989; Volume 41, P10.
18.   Zacharovas, S.J.; Brotherton-Ratcliffe, D. A Digital Printing System for the Commercial Production of High-Resolution True-
      Colour Reflection Holograms. 2005. Available online: https://geola.com/wp-content/uploads/2015/10/Holopack_holoprint_
      2005_Geola.pdf (accessed on 15 March 2021).
19.   Williams, E. How we made Alexander McQueen’s Kate Moss hologram. Creative Review, 15 March 2015. Available online:
      https://www.creativereview.co.uk/alexander-mcqueens-kate-moss-hologram/ (accessed on 15 March 2021).
20.   Cartner-Morley, J. Alexander McQueen: Into the light. The Guardian, 10 February 2015.
21.   Crowder, A.; Conway, B.; Senkiewicz, T.P. Travel Case for Portable Pepper’s Ghost Illusion Setup. U.S. Patent 10,384,144 B2,
      20 August 2019.
Photonics 2021, 8, 219                                                                                                              10 of 10

22.   Lippert, B. Target’s holo promise: Fashion spectacle is a technological treat but a fashion flop. ADWEEK, 12 November 2007;
      Volume 48, 22.
23.   Robinson, J. First Look at the Star Wars: The Last Jedi Shoes from Christian Louboutin. Vanity Fair, 7 December 2017.
24.   McDowell, M. Forced cancellations jumpstart virtual fashion technology. Vogue Business, 17 March 2020.
25.   Wu, W. Does a Lack of Options Mean AR Is Here To Stay? Jing Daily, 6 May 2020. Available online: https://jingdaily.com/does-
      a-lack-options-mean-ar-is-here-to-stay/ (accessed on 1 May 2021).
26.   Driver, R. Luxury brands lose $30.3 billion due to online counterfeiting in 2017. Fashion Network, 16 May 2018. Available
      online: https://uk.fashionnetwork.com/news/Luxury-brands-lose-30-3-billion-due-to-online-counterfeiting-in-2017,977978.
      html (accessed on 15 March 2021).
27.   Passariello, C. Holograms Tell Fake From Fendi. The Wall St. Journal, 22 February 2006.
28.   Chanel Official Serial Number Guide. Available online: https://mislux.com/blogs/the-lux-corner/chanel-official-serial-number-
      guide-how-to-read-a-serial-code (accessed on 15 March 2021).
29.   Benton, S.A.; Bove, V.M., Jr. Holographic Imaging; Wiley: New York, NY, USA, 2008; pp. 159–172.
30.   Benton, S.A. Hologram Reconstructions with Extended Incoherent Sources. J. Opt. Soc. Amer. 1969, 59, 1545–1546.
31.   McGrew, S.P. Countermeasures Against Hologram Counterfeiting. In Proceedings of the International Symposium and Product
      Presentation for Optical Information Storage and Display, Zurich, Switzerland, 14–16 October 1987.
32.   van Renesse, R.L. Security aspects of commercially available dot matrix and image matrix origination systems. In Proceedings of
      the SPIE International Conference on Optical Holography and Its Applications, Kiev, Ukraine, 24–27 May 2004; pp. 1–12.
33.   Firsov, A.; Loechel, B.; Schleunitz, A.; Svintsov, A.; Zaitsevb, S. Fabrication of Nanoimprint Stamps for Rainbow Holograms using
      SEM based e-beam lithography. In Proceedings of the 33rd International Conference Micro-Nano-Engineering, Copenhagen,
      Denmark, 23–26 September 2007; pp. 553–554.
34.   Vather, D.; Naydenova, I.; Cody, D.; Zawadzka, M.; Martin, S.; Mihaylova, E.; Curran, S.; Duffy, P.; Portillo, J.; Connell, D.; et al.
      Serialized holography for brand protection and authentication. Appl. Opt. 2018, 57, E131–E137. [CrossRef] [PubMed]
35.   Bove, V.M., Jr. Display Holography’s Digital Second Act. Proc. IEEE 2012, 100, 918–928. [CrossRef]
36.   Robinson, R. Forget AR & VR Apps. New Technology System Modern Mirror Takes Virtual Try-Ons Next Level. Forbes,
      10 January 2021.
37.   Bove, V.M., Jr. Holographic Television. In Optical Holography–Materials, Theory and Applications; Blanche, P.-A., Ed.; Elsevier:
      St. Louis, MO, USA, 2020; pp. 73–82.
38.   Jiang, Y. What brands in China need to know about naked-eye 3D. Vogue Business, 17 March 2021.
You can also read