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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 10298918 B1

PDFFull Text
Date of Patent:
May. 21, 2019

Filed:

Jan. 07, 2014

Image projection apparatus

Applicant:

Sony Corporation, Tokyo, JP;

Inventors:

Koji Kita, Kanagawa, JP;

Jyunpei Nakajima, Kanagawa, JP;

Yuji Manabe, Kanagawa, JP;

Assignee:

SONY CORPORATION, Tokyo, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Steven Whitesell Gordon

Assistant Examiner:

Jerry L Brooks

Int. Cl.
CPC ...
G02B 27/26 (2006.01); H04N 13/337 (2018.01); H04N 9/31 (2006.01); H04N 13/365 (2018.01); H04N 13/346 (2018.01); G03B 33/06 (2006.01); G03B 33/12 (2006.01); G03B 35/26 (2006.01); G03B 21/00 (2006.01); H04N 13/324 (2018.01); H04N 13/363 (2018.01);
U.S. Cl.
CPC ...
H04N 13/337 (2018.05); G03B 21/005 (2013.01); G03B 33/06 (2013.01); G03B 33/12 (2013.01); G03B 35/26 (2013.01); H04N 9/3105 (2013.01); H04N 9/3138 (2013.01); H04N 9/3164 (2013.01); H04N 9/3194 (2013.01); H04N 9/3197 (2013.01); H04N 13/324 (2018.05); H04N 13/346 (2018.05); H04N 13/363 (2018.05); H04N 13/365 (2018.05);
Abstract

Provided is an image projection apparatus including: one or more light sources; one or more illumination optical systems; a first reflection-type light valve group including three light valves and being configured to modulate incident light based on first image information; a second reflection-type light valve group including three light valves and being configured to modulate incident light based on second image information; a first prism-type photosynthesizing member having a function of synthesizing, on one optical axis, light that is reflected by the first reflection-type light valve group; a second prism-type photosynthesizing member having a function of synthesizing, on one optical axis, light that is reflected by the second reflection-type light valve group; and a prism-type beam splitter configured to synthesize, on one optical axis, light that has been reflected by the first reflection-type light valve group and light that has been reflected by the second reflection-type light valve group.

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