System for reducing noise holograms

Details System for reducing noise holograms System for reducing noise holograms

1988-08-01

1990-09-04

Arnold, Bruce Y.

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Physical developing

350 36, 350 383, 430 1, G03H 104

Patent

active

049539230

ABSTRACT:
A hologram recording assembly includes a transparent, absorbent member supported on a substrate. The transparent member is positioned to be directly incident to an exposure beam. The transparent member is out of moisture equilibrium during an exposure time. Consequently, the transparent member increases or decreases in thickness depending on a moisture difference between it and the environment. As the thickness changes, a phase shift in the light reflections within the recording assembly blurs spurious holograms while leaving the desired hologram intact.

REFERENCES:
patent: 3601017 (1971-08-01), Glatzer et al.
patent: 4456328 (1984-06-01), Arns et al.
patent: 4458977 (1984-07-01), Arns et al.
patent: 4458978 (1984-07-01), Arns et al.

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