Spectral filter module

Details Spectral filter module Spectral filter module

G - Physics

02

B

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G02B 5/22 (2006.01) F21S 8/00 (2006.01) F21V 9/10 (2006.01) G02B 5/00 (2006.01) G02B 26/00 (2006.01) G03B 27/54 (2006.01)

Patent

CA 1324017

ABSTRACT OF THE DISCLOSURE Spectral filter means (20) in which filter elements (22) have elongated planar surface areas covered with patterns of filtering material (44, 84, 94). Filter elements are independently movable parallel to their respective surface planes to positions (32) where a given density pattern of filtering material is intersected by a beam of light and filters a given component of the light. Separate filter elements (22a, 22b, 22c) for each of the primary colors and an additional element (22d) for dimming all colors are used to control the color and intensity of a beam of light.

606638

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