Projector

Details Projector Projector

1999-02-04

2000-10-31

Adams, Russell

Optics: image projectors

Composite projected image

Multicolor picture

353 33, 353 34, 349 5, 349 7, G03B 2100, G03B 2126, G02F 11335

Patent

active

061391549

ABSTRACT:
In a projection display apparatus, an air inlet is formed below an optical modulation device and a color synthesizing system, and a suction fan is placed across the optical modulation device and the color synthesizing system. Thereby the optical modulation device and the color synthesizing system are uniformly cooled by air on the suction side of the suction fan. A structure fixing the optical modulation device and the color synthesizing system is provided with a suction opening cooling the optical modulation device and the color synthesizing system, and this suction opening is covered with a dustproof filter, thereby achieving dust protection.

REFERENCES:
patent: 5743610 (1998-04-01), Yajima et al.
patent: 5868485 (1999-02-01), Fujimori et al.

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