Projection type picture display apparatus

Details Projection type picture display apparatus Projection type picture display apparatus

1998-06-17

2000-03-07

Dowling, William

Optics: image projectors

Housing

353 61, G03B 2116

Patent

active

060330775

ABSTRACT:
A projection type picture display apparatus, includes: an illumination optical system; a decomposition optical system; a plurality of liquid crystal display devices; a light synthesizing optical system; an enclosing case for accommodating the illumination optical system and the decomposition optical system; an optical chassis for fixedly mounting various optical elements including the liquid crystal display devices. A first space is formed under both the enclosing case and the optical chassis. A first opening is formed on a side wall of the enclosing case. At least one second opening is formed on the bottom of the enclosing case. At least a third opening is formed on the optical chassis in a position corresponding to at least one of the liquid crystal display devices. A cooling fan is provided in a position adjacent to the above first opening.

REFERENCES:
patent: 4787737 (1988-11-01), Ogawa et al.
patent: 5651599 (1997-07-01), Fujimori et al.
patent: 5676442 (1997-10-01), Fujimori
patent: 5842761 (1998-12-01), Futakami et al.
patent: 5860719 (1999-01-01), Suzuki et al.

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