Method of filtering spectral energy

Details Method of filtering spectral energy Method of filtering spectral energy

2007-12-25

2007-12-25

Lee, John R. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C359S350000, C359S885000

Reexamination Certificate

active

11645461

ABSTRACT:
A method is provided for suppressing a predetermined portion of an optical spectrum emanating from a light emitter. The optical spectrum illuminates an illumination area. The method includes the steps of fabricating a filter having a spectrophotometric transmittance and varying the spectrophotometric transmittance of the filter. The filter is positioned between the light emitter and the illumination area, such that the filter absorbs the predetermined portion of the optical spectrum.

REFERENCES:
patent: 5644124 (1997-07-01), Hamada et al.
patent: 7142375 (2006-11-01), Nikolov et al.
patent: 2005/0013025 (2005-01-01), Saitoh

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