Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1988-06-10
1991-03-12
Dees, Jose
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
428161, 428164, 428409, 428913, 430 1, 430 2, 369273, 369277, 369283, B02B 300, G11B 370
Patent
active
049992341
ABSTRACT:
A hologram is fabricated by opening a volume phase reflection hologram formed in a recording medium such as a positive photoresist. The opening occurs by forming a second hologram, such as an off-axis hologram, in the same recording medium. The opened hologram can be replicated in metal and the metal can be used to emboss the fringe pattern of the opened hologram into plastic. A full range of colors in the visible spectrum may be obtained by metallizing the embossed plastic structure and then by overcoating it with appropriate clear dielectric layers.
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Caufield Francis J.
Dees Jose
Loney Donald J.
Polaroid Corporation
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