Light reflector

Details Light reflector Light reflector

1990-04-24

1991-01-15

Dority, Carroll B.

Illumination

Light source and modifier

With ventilating, cooling or heat insulating means

362345, 362373, F21V 2900

Patent

active

049858157

ABSTRACT:
A reflector for use in combination with an intense light source, such as a light source for a projection liquid crystal display. The reflector comprises a reflecting member for reflecting light emitted by the light source, a cooling frame having a hollow receiving the reflecting member therein, externally provided with a plurality of heat radiating fins and having a shape substantially conforming to the external shape of the reflecting member, and heat conductive powder filling a space of a substantially uniform width formed between the reflecting member and the inner surface of the hollow of the cooling frame. The heat conductive powder keeps the reflecting member and the cooling frame in close thermal contact with each other so that heat applied to the reflecting member by the light source may be transferred efficiently to the cooling frame to suppress temperature rise in the reflecting member.

REFERENCES:
patent: 4574337 (1986-03-01), Poppenheimer
patent: 4646214 (1987-02-01), Mendleski
patent: 4885668 (1989-12-01), Maglica et al.

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