LED illumination system having an intensity monitoring system

Details LED illumination system having an intensity monitoring system LED illumination system having an intensity monitoring system

2007-11-13

2007-11-13

Epps, Georgia (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

C372S029014

Reexamination Certificate

active

10742270

ABSTRACT:
A light source and method for controlling the same. The light source includes a first component light source that includes N LEDs, a photo-detector, and a collector, where N>1. Each LED has a light emitting chip in a package. The light emitting chip emits light in a forward direction and light in a side direction. The light generated in the forward direction is determined by a drive signal coupled to that LED. A portion of the light in the side direction leaves the package. The collector is positioned such that a portion of the light in the side direction that leaves the package of each of the LEDs is directed onto the photo-detector. The photo-detector generates N intensity signals, each intensity signal having an amplitude related to the intensity of the light emitted in the side direction by a corresponding one of the LEDs.

REFERENCES:
patent: 5489771 (1996-02-01), Beach et al.
patent: 5504762 (1996-04-01), Hutchison
patent: 5812710 (1998-09-01), Sugaya
patent: 6097748 (2000-08-01), Huang et al.
patent: 6107620 (2000-08-01), Shiba et al.
patent: 6325524 (2001-12-01), Weber et al.
patent: 6489600 (2002-12-01), Taguchi
patent: 6527460 (2003-03-01), Cohen et al.
patent: 6744480 (2004-06-01), Kaneko
patent: 2002/0139918 (2002-10-01), Jung et al.
patent: 2003/0030808 (2003-02-01), Marshall et al.
patent: 2003/0116695 (2003-06-01), Masuda et al.
patent: 2003/0193008 (2003-10-01), Barna et al.
patent: 2004/0070337 (2004-04-01), Goh et al.
patent: 2 168 838 (1985-03-01), None
patent: WO 01/99191 (2001-12-01), None

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