Spectral filter module

Details Spectral filter module Spectral filter module

1988-07-26

1990-04-03

Ostrager, Allen M.

Illumination

Light source and modifier

Including selected wavelength modifier

362277, 362283, 350314, 350315, 350316, F21V 900, G02B 522

Patent

active

049145568

ABSTRACT:
Spectral filter means in which filter elements have elongated planar surface areas covered with patterns of filtering material. Filter elements are independently movable parallel to their respective surface planes to positions 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 for each of the primary colors and an additional element for dimming all colors are used to control the color and intensity of a beam of light.

REFERENCES:
patent: 2416919 (1947-03-01), Goldsmith
patent: 2822729 (1958-02-01), Capatosto
patent: 3195405 (1965-07-01), Clark et al.
patent: 3260152 (1966-07-01), Aston

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