Optical apparatus and cooling method thereof

Details Optical apparatus and cooling method thereof Optical apparatus and cooling method thereof

1995-05-31

1999-01-19

Dowling, William

Optics: image projectors

Temperature control

Blower

353 60, 353 52, 362294, G03B 2116

Patent

active

058607196

ABSTRACT:
A light source such as a metal halide lamp is effectively cooled in an optical apparatus such as a liquid crystal projector. In an optical apparatus which includes a concave mirror 11, a light emitting section 12 arranged in a concave portion of the concave mirror along the optical axis and a cooling structure for cooling a periphery of the light emitting section, the cooling structure is provided with a means for generating an air flow 4, the direction of which is approximately perpendicular to the optical axis of the concave mirror 11, and a means for generating an air flow 5 circulating into the concave portion of the concave mirror 11.

REFERENCES:
patent: 3642361 (1972-02-01), Streu
patent: 4787737 (1988-11-01), Ogawa et al.
patent: 4925295 (1990-05-01), Ogawa et al.
patent: 5287132 (1994-02-01), Suzuki et al.
patent: 5418586 (1995-05-01), Fujimori et al.
patent: 5626416 (1997-05-01), Romano et al.

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