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:
Nov. 22, 2011

Filed:

Sep. 04, 2008
Applicants:

Akira Shirai, Hino, JP;

Hirokazu Nishino, Akishima, JP;

Yoshiaki Horikawa, Hachioji, JP;

Fusao Ishii, Menlo Park, CA (US);

Inventors:

Akira Shirai, Hino, JP;

Hirokazu Nishino, Akishima, JP;

Yoshiaki Horikawa, Hachioji, JP;

Fusao Ishii, Menlo Park, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/20 (2006.01); G03B 21/28 (2006.01); G03B 21/26 (2006.01); G02B 5/08 (2006.01); G09G 3/34 (2006.01); G02F 1/00 (2006.01); G02F 1/135 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention provides a projection apparatus, comprising: a light source; at least one spatial light modulator for modulating illumination light from the light source by a plurality of pixel elements by using different modulation states; a light source control unit performing a modulation control of the light source; and a spatial light modulator control unit generating, from an input image signal, a control signal for driving the spatial light modulator, wherein: the light source control unit has a function of receiving data corresponding to the control signal generated by the spatial light modulator control unit, controlling a parameter of an emission pulse of the illumination light emitted from the light source, and thereby adjusting an emission intensity of the illumination light.


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