Holograms

Details Holograms Holograms

G - Physics

03

C

88/0.12, 88/0.14

G03C 11/18 (2006.01) G03C 5/48 (2006.01) G03H 1/18 (2006.01)

Patent

CA 1279780

Abstract of the disclosure Holograms Multicolour holograms using gelatin as the binder and having inter- ference fringes lying in layers parallel to the substrate, the colours of which are visible by reflection in incident natural light, by treating the holographic material which has been holographically exposed and processed to produce a hologram therein by applying to the selected areas of the gelatin which contains the interference fringes a solution of a compound which causes the interference fringes to separate permanently and produce a bathochromic shift in the replay wavelength.

524213

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