Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2006-07-26
2010-06-08
Le, Que T (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S227110
Reexamination Certificate
active
07732753
ABSTRACT:
The illumination system has a plurality of light sources (R, G, B), a light-transmissive light-sensing plate (5) and surface-modification structures (21, 22) provided at a limited number of pre-determined locations on a surface of the light-sensing plate (5). The surface-modification structures divert a portion of the light traveling through the light-sensing plate. The diverted light is guided towards an edge surface (15, 16) of the light-sensing plate, where at least one light sensor (11, 12) senses the diverted light. A first light sensor (11) preferably receives diverted light substantially exclusively from the first surface-modification structures (21), whereas the second light sensor (12) receives diverted light substantially exclusively from the second surface-modification structures (22). Alternatively, the illumination system further comprises a light-mixing chamber having a light-emission window for illuminating a display device, the light-sensing plate being arranged in the light-mixing chamber between the light source and the light-emission window.
REFERENCES:
patent: 5490005 (1996-02-01), Jueliger
patent: 6689999 (2004-02-01), Haines et al.
patent: 6741351 (2004-05-01), Marshalls et al.
patent: 6753661 (2004-06-01), Muthu et al.
patent: 7223958 (2007-05-01), Nakajima et al.
patent: 7497610 (2009-03-01), Sugiura et al.
patent: 2004/0041756 (2004-03-01), Henmi et al.
patent: 2004/0070966 (2004-04-01), Ahn et al.
patent: 2004/0113040 (2004-06-01), Compain
patent: 2004/0113044 (2004-06-01), Ishiguchi et al.
patent: 2004/0119908 (2004-06-01), Sakai
patent: 2006/0243893 (2006-11-01), Ng et al.
patent: 2007/0222741 (2007-09-01), Itaya
patent: 0156271 (1985-02-01), None
patent: 1122559 (2001-08-01), None
patent: 2004021147 (2004-01-01), None
patent: 9312515 (1993-06-01), None
Beloborodov Mark L
Bui-Pho Pascal M
Koninklijke Philips Electronics , N.V.
Le Que T
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