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:
Feb. 09, 2021
Filed:
Aug. 01, 2018
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventor:
Takaaki Tanaka, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 5/02 (2006.01); G02B 13/20 (2006.01); H04N 9/31 (2006.01); G02B 27/48 (2006.01); G03B 27/48 (2006.01); G03B 21/20 (2006.01); G02B 27/10 (2006.01); G02B 27/09 (2006.01); G03B 33/06 (2006.01);
U.S. Cl.
CPC ...
G02B 5/0236 (2013.01); G02B 5/0278 (2013.01); G02B 27/0933 (2013.01); G02B 27/102 (2013.01); G02B 27/48 (2013.01); G03B 21/208 (2013.01); G03B 21/2013 (2013.01); G03B 21/2033 (2013.01); G03B 21/2073 (2013.01); G03B 27/48 (2013.01); G03B 33/06 (2013.01); H04N 9/3161 (2013.01); H04N 9/3164 (2013.01);
Abstract
The light source device of the projection display apparatus according to the present disclosure includes: solid-state light sources that individually emit blue light, green light, and red light; a plurality of dichroic mirrors that combine the blue light, the green light, and the red light having exited from the solid-state light sources; a first diffusion plate on which the combined light having been combined by the plurality of dichroic mirrors is incident; a dynamic diffusion plate that is disposed at a position at which the combined light having exited from the first diffusion plate converges and starts to diverge.