Radiation imagery chemistry: process – composition – or product th – Holographic process – composition – or product
Patent
1988-06-10
1989-06-13
Dees, Jose G.
Radiation imagery chemistry: process, composition, or product th
Holographic process, composition, or product
430 2, 430394, 350 365, 350 375, 350 381, G03H 104
Patent
active
048392502
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 Jos,e G.
Loney Donald J.
Polaroid Corporation Patent Department
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