Optics: image projectors – Cabinet encloses projector and one side of screen – Reflector between lamp and screen
Patent
1987-07-30
1989-10-17
Cuchlinski, Jr., William A.
Optics: image projectors
Cabinet encloses projector and one side of screen
Reflector between lamp and screen
350331R, 353122, 358231, G03B 2110
Patent
active
048750646
ABSTRACT:
A projection lens, for enlarging and projecting an image displayed on a liquid crystal display panel onto a transmission type screen provided at a display window of a projector case, is arranged so that its optical axis is perpendicular to the optical axis of projection toward the transmission type screen. At least one mirror, for reflecting an image projected through the projection lens toward the transmission type screen, is arranged between the projection lens and the transmission type screen. The liquid crystal display panel is arranged such that its optical axis is perpendicular to the optical axis of the projection lens. At least one mirror, for reflecting an image displayed on the liquid crystal display panel toward the projection lens, is arranged between the liquid crystal display panel and the projection lens.
REFERENCES:
patent: 3692389 (1972-09-01), Strauss
patent: 3895866 (1975-07-01), de Quervain
patent: 3944331 (1976-03-01), Janning
patent: 4036821 (1977-06-01), Badalich
patent: 4222641 (1980-09-01), Stolov
patent: 4235536 (1980-11-01), Hofmann et al.
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patent: 4578710 (1986-03-01), Hasegawa
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patent: 4722593 (1988-02-01), Shimazaki
Nakakusu Tohru
Sato Makoto
Shimazaki Tatsuo
Umeda Osamu
Casio Computer Co. Ltd.
Cuchlinski Jr. William A.
Scanlon Patrick R.
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