Lamination of multilayer photopolymer holograms

Details Lamination of multilayer photopolymer holograms Lamination of multilayer photopolymer holograms

1994-08-31

1997-02-25

Dzierzynski, Paul M.

Optical: systems and elements

Holographic system or element

359 3, 359 24, 359900, G03H 100

Patent

active

056064330

ABSTRACT:
A process for making a multilayer photopolymer hologram structure without intervening adhesive layers between component photopolymer layers. The process includes the steps of exposing a first photopolymer recording layer to hologram forming light, exposing the holographically exposed first photopolymer recording layer to UV light to partially UV harden the first photopolymer recording layer, exposing a second photopolymer recording layer to hologram forming light, exposing the holographically exposed second photopolymer recording layer to UV light for a time interval that is sufficiently short to preserve the tackiness of the second photopolymer recording layer, laminating the second photopolymer recording layer onto the first photopolymer recording layer to form a laminar photopolymer structure having top and bottom photopolymer surfaces, baking the laminar photopolymer structure while subjecting the top and bottom surfaces thereof to the uniform pressure, and exposing the laminar photopolymer structure to UV light.

REFERENCES:
patent: 4822651 (1989-04-01), Newsom
patent: 4965152 (1990-10-01), Keys et al.
patent: 4975311 (1990-12-01), Lindgren
patent: 5103323 (1992-04-01), Magarinos et al.
patent: 5182180 (1993-01-01), Gambogi, Jr. et al.
patent: 5360501 (1994-11-01), Bolt

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