Liquid-crystal projector with light beam reduction lens array fo

Details Liquid-crystal projector with light beam reduction lens array fo Liquid-crystal projector with light beam reduction lens array fo

1986-07-01

1988-02-02

Miller, Stanley D.

Optics: image projectors

Plural projection paths with single light source

350331R, 350339F, 350432, 353 69, 353122, G02F 113, G03B 2100

Patent

active

047225939

ABSTRACT:
A liquid-crystal projector reduces outer portions of a light beam corresponding to a projection image from a liquid-crystal display panel illuminated with light from a light source by a light beam width reduction lens array in order to increase the luminance of the outer beam portions. The projection image passing through the light beam width reduction lens array is compensated for attenuation in luminance of the outer beam portions, and is then projected onto a screen surface through a projection lens system.

REFERENCES:
patent: 2787935 (1957-04-01), Inoue
patent: 4060316 (1977-11-01), Pollack et al.
patent: 4127322 (1978-11-01), Jacobson et al.
patent: 4479119 (1984-10-01), Sakano
patent: 4595263 (1986-06-01), Clarke
patent: 4613207 (1986-09-01), Fergason
patent: 4671634 (1987-06-01), Kizaki et al.
T. Uchida--"A Full-Color . . . Color Layers on the Electrodes", May 1983, pp. 503-507--IEEE Transactions on Electron Devices-vol. Ed. 30-No. 5.

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