Light filtering arrangement for holographic displays

Details Light filtering arrangement for holographic displays Light filtering arrangement for holographic displays

1975-01-16

1976-03-16

Stern, Ronald J.

350319, G03H 122

Patent

active

039443221

ABSTRACT:
A holographic arrangement is provided with light filtering means for transmitting only those light rays to the hologram which are incident to the hologram at the prescribed angles required for substantial diffraction while at the same time operating to preclude the transmission of other light rays to the hologram which would otherwise be incident to the hologram at angles outside the prescribed range of angles required for substantial diffraction by the hologram. In this manner background light which would otherwise be transmitted through a hologram so as to degrade the quality of a stereoscopic image reconstructed from the hologram is precluded from ever reaching the viewing area.

REFERENCES:
patent: 3653138 (1972-04-01), Cooper
patent: 3811751 (1974-05-01), Myer
patent: 3838903 (1974-10-01), Leith et al.
"The New Art of Holography" Conductron Corp. Reprint from World Book Science Annual 1967, pp. 201-209.
Laser Focus, July 1968, New Products Section, p. 82.
Jeong, Jour. of the Optical Society of America, Vol. 57, No. 11, Nov. 1967, pp. 1396-1398.

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