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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 8870384 B1

PDFFull Text
Date of Patent:
Oct. 28, 2014

Filed:

Sep. 16, 2010

Projection display device having light source device with color synthesis unit

Applicants:

Masao Imai, Minato-ku, JP;

Goroh Saitoh, Minato-ku, JP;

Fujio Okumura, Minato-ku, JP;

Inventors:

Masao Imai, Minato-ku, JP;

Goroh Saitoh, Minato-ku, JP;

Fujio Okumura, Minato-ku, JP;

Assignee:

Nec Corporation, Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Tony Ko

Assistant Examiner:

Jori S Reilly-Diakun

Int. Cl.
CPC ...
G03B 21/14 (2006.01); G03B 21/00 (2006.01); G03B 21/20 (2006.01); G02B 5/04 (2006.01); G02B 27/10 (2006.01); H04N 9/31 (2006.01); G03B 33/06 (2006.01); G03B 33/12 (2006.01);
U.S. Cl.
CPC ...
G03B 21/2033 (2013.01); G03B 21/14 (2013.01); G03B 21/2073 (2013.01); G02B 5/04 (2013.01); G02B 27/10 (2013.01); H04N 9/3105 (2013.01); H04N 9/3167 (2013.01); G03B 33/06 (2013.01); G03B 33/12 (2013.01);
Abstract

A light source device includes: a first light source () that emits first polarized light of a plurality of colors including different wavelengths; a second light source () that emits second polarized light whose polarization state differs from that of the first polarized light and that includes light of at least one color from among the plurality of colors; and a first color synthesis optical element () that synthesizes the first polarized light emitted from the first light source () and the second polarized light emitted from the second light source ().

Find Patent Forward Citations

Imai, Masao. (2014). Projection display device having light source device with color synthesis unit (U.S. Patent No. 8870384). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8870384

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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