System for extending the useful life of colored gels

Details System for extending the useful life of colored gels System for extending the useful life of colored gels

1997-06-26

1999-12-21

Cariaso, Alan

Illumination

Light source and modifier

Including selected wavelength modifier

359590, 362296, F21V 908

Patent

active

060040092

ABSTRACT:
The invention is directed to a system and method for extending the life of a bluish, greenish, or reddish colored gel, comprising a filter coating situated between a light source and a colored gel, which filter coating has a reflectance band falling in the same wavelength region of the visible light spectrum as the absorption band for the colored gel such that burning or bleaching of the color is prevented or delayed.

REFERENCES:
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patent: 4536063 (1985-08-01), Southwell
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patent: 4890208 (1989-12-01), Izenour
patent: 5169229 (1992-12-01), Hoppert et al.
patent: 5446637 (1995-08-01), Cunningham et al.
patent: 5552927 (1996-09-01), Wheatly et al.
patent: 5646781 (1997-07-01), Johnson, Jr.
patent: 5694240 (1997-12-01), Sternbergh

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