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:
Jan. 22, 2019
Filed:
Jan. 19, 2018
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Atsushi Fukui, Osaka, JP;
Masaru Fujita, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/14 (2006.01); G02B 5/02 (2006.01); G03B 21/20 (2006.01); G02B 27/09 (2006.01);
U.S. Cl.
CPC ...
G03B 21/2033 (2013.01); G02B 5/02 (2013.01); G02B 27/0955 (2013.01);
Abstract
A projection light source device according to the present disclosure includes a light source, and a collimating lens that substantially collimates light emitted from the light source, an intermediate diffusion plate that diffuses the emitted light of the collimating lens, and an emission surface diffusion plate that has a weaker diffusibility than the intermediate diffusion plate and diffuses the emitted light of the intermediate diffusion plate.