Diffraction diffusion screen with holographically suppressed zer

Details Diffraction diffusion screen with holographically suppressed zer Diffraction diffusion screen with holographically suppressed zer

1984-11-01

1986-09-09

Arnold, Bruce Y.

350 377, G02B 532

Patent

active

046104992

ABSTRACT:
A diffusing screen (50, 50', 50", 102) of a transmission hologram (54, 80, 94, 112) located adjacent to a diffraction optics directional diffusing screen (52, 86, 92, 114) supresses zero-order light from the diffusing screen thereby providing a device having the advantages of a directional diffusing screen but which does not have the disadvantages associated with zero-order light.

REFERENCES:
patent: 3544711 (1970-12-01), De Bitetto
patent: 3580655 (1971-05-01), Leith
patent: 3708217 (1973-01-01), McMahon
patent: 3907403 (1975-09-01), Maeda
patent: 3980389 (1976-09-01), Huignard et al.
patent: 4104489 (1978-08-01), Satoh et al.
patent: 4215924 (1980-08-01), Matsumoto
patent: 4372639 (1983-02-01), Johnson
Sincerbox & Tan, IBM Technical Disclosure Bulletin, vol. 23, pp. 831-832, "System to Increase the Efficiency of the Holographic Energy Distribution for Individual Chip Replacement"--Jul. 1980.
RCA Review, vol. 33, Mar. 1972, pp. 125-127, "Properties of Diffuse-Object Holograms", and Holographic Optical Elements and Applications.

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