The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 08, 2010
Filed:
Jul. 26, 2006
Horst Greiner, Aachen, DE;
Horst Greiner, Aachen, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The illumination system has a plurality of light sources (R, G, B), a light-transmissive light-sensing plate () and surface-modification structures () provided at a limited number of pre-determined locations on a surface of the light-sensing plate (). 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 () of the light-sensing plate, where at least one light sensor () senses the diverted light. A first light sensor () preferably receives diverted light substantially exclusively from the first surface-modification structures (), whereas the second light sensor () receives diverted light substantially exclusively from the second surface-modification structures (). 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.