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:
Jun. 27, 2017

Filed:

Nov. 24, 2015
Applicant:

Shigekazu Tsuji, Tokyo, JP;

Inventor:

Shigekazu Tsuji, Tokyo, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 26/00 (2006.01); H04N 9/31 (2006.01); G03B 21/20 (2006.01); G03B 21/16 (2006.01); G03B 33/08 (2006.01);
U.S. Cl.
CPC ...
H04N 9/3111 (2013.01); G02B 26/008 (2013.01); G03B 21/16 (2013.01); G03B 21/2053 (2013.01); H04N 9/3155 (2013.01); G03B 21/2026 (2013.01); G03B 33/08 (2013.01);
Abstract

An image projector includes a light source to emit light, an image forming device to form an image based on a reflected light of the light emitted from the light source, a color wheel disposed between the light source and the image forming device so as to pass the light emitted from the light source to the image forming device through an optical path, the color wheel including a plurality of color filters, at least one lens to project the image formed on the image forming device to a projection surface as a projection image, and circuitry to cause the color wheel be moved away from the optical path for the light emitted from the light source, when a brightness of the projection image is to be increased.


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