Illumination – Plural light sources – Diverse light generators
Patent
1989-04-14
1992-01-28
Lazarus, Ira S.
Illumination
Plural light sources
Diverse light generators
362263, 362268, F21M 1500
Patent
active
050848070
ABSTRACT:
The present invention is directed to illumination structures useful in display systems for projection video and television devices performing with high efficiency and good color rendition. Such illumination sources include a light source having an inner and outer envelope with plane mirrors within the outer envelope to direct reflected light, a light source providing randomly polarized light with polarizing structure for passing a desired polarization of the polarized light, and an arc lamp having at least two arcs for supplying uniform illumination in two dimensions. These illuminating structures enable significantly improved illumination in the appropriate projection video and television systems.
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Bradley, Jr. Ralph H.
Eskin Joshua D.
Goldenberg Jill F.
Guerinot William F.
McKechnie Thomas S.
Hagarman Sue
Lazarus Ira S.
Miller Paul R.
U.S. Philips Corporation
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