Electrically controlled additive lamp housing for optical printing
AssigneeHoei Sangyo Kabushiki Kaisha
InventorMasayuki Nishizawa
Life of this patent
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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.
Claims9
An electrically controlled additive lamp housing for optical printing, said lamp housing comprising
- first, second and third light sources;
- first, second and third dichroic filters positioned at corresponding ones of the first, second and third light sources for deriving red, green and blue beams, respectively, from said light sources;
- a beam guide member having first, second and third branched bundles and a main bundle composed of said first, second and third branched bundles, each branched bundle having an end surface at which a corresponding one of said beams derived from said dichroic filters is provided, and said main bundle having an end surface for emitting said beams;
- and
- a light quantity control circuit for controlling the quantities of light of said light sources.
Dependencies are inferred from the claim text.