Modified liquid crystal television as a spatial light modulator

Details Modified liquid crystal television as a spatial light modulator Modified liquid crystal television as a spatial light modulator

1986-11-10

1987-12-29

Miller, Stanley D.

350 366, 350 374, 350337, 350345, G02F 113, G03H 108, G02B 532

Patent

active

047156830

ABSTRACT:
The spatial light modulator utilizes a modified liquid crystal television for modulating a laser beam so as to produce a transformed hologram image on a film plate which is identical with the video information being fed into the liquid crystal TV. Once a image film has been produced the film is developed and placed back in the system so that the system will now act as a comparator and tracking device. With the reference beam blocked and a new video input fed into the liquid crystal TV the system now will have an output only when the scene on the TV is identical to the scene recorded on the film. Indicator means give a signal output from this comparison that is identical.

REFERENCES:
patent: 3829838 (1974-08-01), Lewis et al.
patent: 3890035 (1975-06-01), Takeda
patent: 3924924 (1975-12-01), Fukuhara
patent: 4533215 (1985-08-01), Trias et al.
patent: 4562478 (1985-12-01), Hirasawa et al.
patent: 4653867 (1987-03-01), Urabe et al.
Robert, J., "T.V. Image with Liquid Crystal Display," 1978 Biennial Display esearch Conference, (Oct. 1978), pp. 52-55.

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