Liquid crystal projector

Optics: image projectors – Cabinet encloses projector and one side of screen – Reflector between lamp and screen

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Details

353 38, 353 20, 353122, 358 61, 359 40, 359 63, 359457, G03B 2128

Patent

active

050489496

ABSTRACT:
A liquid crystal projector includes a liquid crystal panel, a light source for illuminating the liquid crystal panel, a back-projection type screen having on its surface a lenticular lens in which many vertical or horizontal stripe lenses are arranged in parallel, a projection lens for enlargedly projecting light transmitted through the liquid crystal panel onto the back-projection type screen, a light-falling polarized plate arranged between the light-falling plane of the liquid crystal panel and the light source, for transmitting the light from the light source, and oscillating in a predetermined direction, to fall on the liquid crystal panel, and an image-forming polarizing plate arranged between the light-outgoing plane of the liquid crystal panel and the projection lens or in a projection path from the projection lens to the screen, to allow the liquid transmitted through the liquid crystal panel, and oscillating in a predetermined direction, to pass through, thereby forming a light image.

REFERENCES:
patent: 3895866 (1975-07-01), de Quervain et al.
patent: 4060316 (1977-11-01), Pollack et al.
patent: 4374609 (1983-02-01), Lange
patent: 4384768 (1983-05-01), Guzman
patent: 4439027 (1984-03-01), Shioda et al.
patent: 4497543 (1985-02-01), Aoki et al.
patent: 4544946 (1985-10-01), Van Breemen
patent: 4763993 (1988-08-01), Vogeley et al.
patent: 4796978 (1989-01-01), Tanaka et al.
patent: 4928123 (1990-05-01), Takafuji

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