Apparatus for cooling a light beam

Details Apparatus for cooling a light beam Apparatus for cooling a light beam

1997-01-27

1999-01-12

Sember, Thomas M.

Illumination

Light source and modifier

With ventilating, cooling or heat insulating means

362294, 362293, 362373, 16510421, 16510413, 16510428, F21V 2900

Patent

active

058577688

ABSTRACT:
Apparatus for cooling a light beam used to project an image on a projection surface. The apparatus includes a light beam source and a gas cooling circuit. A cooling chamber is connected to conduct gas through the circuit. An image projection device is mounted in the chamber. The chamber has a thermally protected environment. A driving device is provided in the circuit. A heat conducting gas is moved by the driving device to circulate within the circuit. The thermally protected environment may include an atmosphere of atomized, heat conducting fluid. A heat extracting filter may be mounted in the light beam adjacent the cooling chamber.

REFERENCES:
patent: 1895887 (1933-01-01), Lorenz
patent: 2943534 (1960-07-01), Pierschel
patent: 3193001 (1965-07-01), Meckler
patent: 3914010 (1975-10-01), Zeller
patent: 5147130 (1992-09-01), Watanuli
patent: 5497573 (1996-03-01), Stadjuhar

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