Optical: systems and elements – Holographic system or element – Having particular recording medium
Patent
1989-06-26
1992-08-11
Arnold, Bruce Y.
Optical: systems and elements
Holographic system or element
Having particular recording medium
359 13, 359900, 430 1, 430 2, 430270, 428412, 4284237, 428426, 156 99, 264345, G03H 104
Patent
active
051384698
ABSTRACT:
A method for processing exposed holograms to enhance their thermal stability and enable them to withstand a windshield lamination process is disclosed. The secondary processing procedure entails an optional step of applying a moisture barrier to the hologram, followed by heat stabilizing the hologram and storing it in a relatively low humidity environment. Specifically, the exposed holographic material is heated to a peak temperature of about 135.degree. C. and thereafter cooled to provide a thermally stabilized holographic material that maintains its holographic qualities over a relatively broad range of temperatures.
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Freeman Glenn E.
Littell, Jr. H. Edward
Thomas Mark A.
Valimont James L.
Wood Robert B.
Arnold Bruce Y.
Flight Dynamics, Inc.
Shafer R. D.
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