Appeal No. 2002-1849 Page 11
Application No. 09/116,710
by direct deposition of a light reflective layer on an embossed
hologram (col. 9, lines 14-17). Light reflective layer 110,
typically a metallic foil, may be a mirror, such as silvered
glass, glass with a conventional grey filter, polystyrene of
grey or silver hue, or polypropylene (col. 9, lines 24-29).
Reflective pigments for the light reflective layer 110 may be
highly reflective metallic pigments, or can be less reflective
pigments (col. 9, lines 33-39).
To provide the holographic transmission diffuser, an object
or surface thereof is holographically recorded in a holographic
medium as an interference pattern. A volume transmission
hologram will be produced having holographically recorded therein
the desired optical properties of the light diffusing object
(col. 10, lines 36-39). The production of original volume phase
transmission holograms may be inconsistent with desirable product
process times. Accordingly, an original hologram may be used as
a master for the mass production of several duplicate holograms
(col. 12, lines 25-29). It is not required that the transmission
holographic diffuser 120 be prepared as a transmission hologram.
Transmission holographic diffuser 120 may also be prepared as a
light transmissive layer having a holographically produced
"surface relief pattern" (col. 12, lines 32-36). When backed
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Last modified: November 3, 2007