Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent
1976-12-03
1979-11-27
Segal, Robert
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
313487, 313498, 313503, 315248, H01J 6162, H01J 6304, H01J 6100
Patent
active
041762940
ABSTRACT:
Method and device for efficiently generating white light with good color rendition of illuminated objects. This is achieved by blending three different colors of light, namely, a green to yellow-green color of light, an orange to red color of light, and a purplish-blue to greenish-blue color of light. The relative intensities of the blended colors of light are selected to produce white light of predetermined ICI coordinates. The resulting blended light has at most only a limited amount of radiations of a wavelength shorter than 430 nm and at most only a limited amount of radiations of a wavelength longer than 630 nm. Also, the blended light has at most only a limited amount of radiations of a wavelength of about 575 nm and at most only a limited amount of radiations of a wavelength of about 500 nm.
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Palmer W. D.
Segal Robert
Westinghouse Electric Corp.
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