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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.:

US 8979316 B1

PDFFull Text
Date of Patent:
Mar. 17, 2015

Filed:

Aug. 23, 2011

Zoom spotlight using led array

Applicants:

Jeffrey B. Lee, El Sobrante, CA (US);

Brian I-yuan Chiang, El Sobrante, CA (US);

Han-kun Ho, El Sobrante, CA (US);

Inventors:

Jeffrey B. Lee, El Sobrante, CA (US);

Brian I-Yuan Chiang, El Sobrante, CA (US);

Han-Kun Ho, El Sobrante, CA (US);

Assignee:

DiCon Fiberoptics Inc., Richmond, CA (US);

Attorney:

Davis Wright Tremaine LLP

Primary Examiner:

Sharon Payne

Assistant Examiner:

Kenny C Sokolowski

Int. Cl.
CPC ...
F21V 14/06 (2006.01); F21V 5/00 (2006.01); F21V 5/04 (2006.01); F21V 11/16 (2006.01); F21V 13/12 (2006.01); F21V 23/04 (2006.01); H05B 33/08 (2006.01); G02B 19/00 (2006.01); F21W 131/406 (2006.01); F21Y 105/00 (2006.01); F21Y 113/00 (2006.01); F21Y 101/02 (2006.01);
U.S. Cl.
CPC ...
F21V 14/06 (2013.01); F21V 5/002 (2013.01); F21V 5/008 (2013.01); F21V 5/04 (2013.01); F21V 11/16 (2013.01); F21V 13/12 (2013.01); F21V 23/04 (2013.01); H05B 33/0842 (2013.01); G02B 19/0066 (2013.01); G02B 19/0028 (2013.01); F21W 2131/406 (2013.01); F21Y 2105/001 (2013.01); F21Y 2113/005 (2013.01); F21Y 2101/02 (2013.01);
Abstract

A LED array spot illuminator for providing light along an optical axis comprises a substrate and at least one array of multiple LED chips without individual packaging supported by the substrate, wherein the LED chips emit light within the same or different wavelength ranges and are distributed laterally with respect to the axis over a light-emitting area. The LED chips have light emitting surfaces for emitting light in directions transverse to the area. An optical device collects and directs light emitted by the LED chips of the at least one array along the axis. An aperture passes the light emitted by the LED chips of the at least one array along the axis, wherein light collected by the optical device and passed by the aperture forms a beam of light illuminating a spot. Electric current is supplied to the multiple LED chips, causing them to emit light. Light emitted by the multiple LED chips that passed through the optical device and the aperture form a beam of light illuminating a spot. A distance between the multiple LED chips and one or more elements of the optical device is controlled to select a size of the spot.

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