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.:
Date of Patent:
Apr. 19, 2016
Filed:
Nov. 20, 2012
Applicant:
Sony Corporation, Tokyo, JP;
Inventors:
Keisuke Homma, Kanagawa, JP;
Yukio Ohmura, Tokyo, JP;
Assignee:
SONY CORPORATION, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/14 (2006.01); G03B 21/20 (2006.01); G02B 27/28 (2006.01); G02B 6/27 (2006.01); G02B 27/14 (2006.01);
U.S. Cl.
CPC ...
G03B 21/2073 (2013.01); G02B 6/2773 (2013.01); G02B 27/283 (2013.01); G02B 27/145 (2013.01);
Abstract
There is provided a projection apparatus including a color synthesis section, a polarization conversion section, and a projection lens. The color synthesis section is configured to combine three-primary color light and emit combined light. The polarization conversion section is disposed on a light-emission side of the color synthesis section, the polarization conversion section being configured to put the color light in the combined light in a non-polarized state uniformly in all directions. The projection lens is configured to emit light provided by the polarization conversion section.