Light source for projection type display device

Details Light source for projection type display device Light source for projection type display device

1995-06-15

1997-03-25

O'Shea, Sandra L.

Electric lamp and discharge devices

With temperature modifier

Using liquids or fluid flow directing means

313 24, H01K 158

Patent

active

056147805

ABSTRACT:
A light source for use in a projection type liquid crystal display device. The light source includes an electrodeless light emitting member having a light emitting material sealed in a transparent tube to emit light upon the application of microwave electromagnetic energy. A concave mirror is arranged on the outside of the light emitting member, and the transparent tube is supported by a rotatable rod-like support member which extends through the concave mirror. Means in the form of a vane, a screw or a projection is arranged on the rod-like support member or on the light emitting member for stirring air, while the rod-like support member rotates, to cool the light emitting member.

REFERENCES:
patent: 3949258 (1976-04-01), Soodak
patent: 4600857 (1986-07-01), Suhar
patent: 4695757 (1987-09-01), Ury et al.
patent: 4894592 (1990-01-01), Ervin et al.
patent: 4954756 (1990-09-01), Wood et al.
patent: 5021704 (1991-01-01), Walker et al.
"New Long-Lived Stable Light Source for Projection-Display Applications,", MacLennan, et al., SID 92 DIGEST, pp. 460-463, 1992.

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