Electrically controlled additive lamp housing for optical printi

Details Electrically controlled additive lamp housing for optical printi Electrically controlled additive lamp housing for optical printi

1981-05-26

1983-04-19

Gluck, Irwin

Illumination

Plural light sources

Particular wavelength

362 32, 362230, 362268, 362293, F21V 908, F21V 704, F21V 504, F21V 1312

Patent

active

043807917

ABSTRACT:
First, second and third dichroic filters are positioned at corresponding ones of first, second and third light sources for deriving red, green and blue beams, respectively, from the light sources. A beam guide member has first, second and third branched bundles and a main bundle composed of the first, second and third branched bundles. Each branched bundle has an end surface at which a corresponding one of the beams derived from the dichroic filters is provided. The main bundle has an end surface for emitting the beams. A light quantity control circuit controls the quantities of light of the light sources.

REFERENCES:
patent: 4071809 (1978-01-01), Weiss et al.
patent: 4337502 (1982-06-01), Lescrenier
patent: 4338654 (1982-07-01), Logothetis

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