Light source with photosensor light guide

Details Light source with photosensor light guide Light source with photosensor light guide

2007-08-21

2009-08-04

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S205000, C385S012000, C362S606000, C362S612000, C315S291000

Reexamination Certificate

active

07569807

ABSTRACT:
The present invention provides a light source comprising one or more light-emitting elements, one or more photosensors and, a photosensor light guide, such as, for example, a substantially planar light guide. The photosensor light guide is generally configured to capture and guide some of the light emitted from the one or more light-emitting elements to one or more photosensors optically coupled thereto, the light sensed thereby being useable as a basis for controlling the respective outputs of the one or more light-emitting elements.

REFERENCES:
patent: 6753661 (2004-06-01), Muthu et al.
patent: 2005/0286831 (2005-12-01), Ohtsu et al.

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