Light pattern generator

Details Light pattern generator Light pattern generator

1986-07-16

1988-10-18

Jones, Larry

Illumination

Elongated source light unit or support

With or including transparent or translucent member

353 62, 353 84, 353 42, 40560, 362222, 362307, F21M 2100, G03B 2100, G03B 2114

Patent

active

047791764

ABSTRACT:
A light pattern generator is utilized to produce an image which is projected onto a stage or screen. The image is derived from a beam of light. The light pattern generator comprises a heat resistant glass plate having a reflective layer deposited on one surface thereof. A nonreflective layer is deposited on the surface of the reflective layer. Both of the layers are etched to produce an opening extending through the layers wherein the opening has the shape of the desired image. The beam of light is directed through the transparent plate and the portions not passed through the opening are reflected by the mirror surface of the reflective layer. This prevents the buildup of heat within the light pattern generator. Any extraneous light which is received at the nonreflective layer is absorbed to prevent the escape of unwanted light and its projection to the stage.

REFERENCES:
patent: 2055217 (1936-09-01), Gauthier
patent: 2077111 (1937-04-01), Kent
patent: 2379534 (1945-07-01), Lowden
patent: 2498294 (1950-02-01), Pennom et al.
patent: 2959094 (1960-11-01), Kosma
patent: 4222641 (1980-09-01), Stolov

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