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.

Date of Patent:
Sep. 06, 2011

Filed:

Dec. 22, 2008
Applicants:

Masutaka Inoue, Moriguchi, JP;

Tomoya Terauchi, Moriguchi, JP;

Inventors:

Masutaka Inoue, Moriguchi, JP;

Tomoya Terauchi, Moriguchi, JP;

Assignee:

Sanyo Electric Co., Ltd., Moriguchi-shi, JP;

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/20 (2006.01); G01J 1/32 (2006.01); F21V 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A lighting unit includes: a light source unithaving a plurality of solid state light sources, a liquid crystal paneldisplaying an image in accordance with an image input signal, a light source controlling unitcontrolling, in accordance with the image input signal, a light amount of color component lights emitted from light source unit, and a speckle degree calculating unitcalculating a speckle degree that indicates a degree to which the color component lights generate a speckle displayed in accordance with the image input signal. The light source controlling unitchanges a control ratio between a first control mode and a second control mode, in accordance with the speckle degree acquired by the speckle degree calculating unit


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