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:
Mar. 03, 2015
Filed:
Dec. 03, 2013
Applicant:
Panasonic Corporation, Osaka, JP;
Inventors:
Kazuhiko Yamanaka, Osaka, JP;
Shinichi Takigawa, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 33/50 (2010.01); H01L 33/58 (2010.01); F21K 99/00 (2010.01); G02F 2/02 (2006.01); G02B 3/00 (2006.01); H01S 5/00 (2006.01);
U.S. Cl.
CPC ...
F21K 9/56 (2013.01); G02F 2/02 (2013.01); H01L 33/58 (2013.01); G02B 3/0062 (2013.01); G02B 3/0056 (2013.01); H01L 33/505 (2013.01); H01S 5/005 (2013.01);
Abstract
An optical element includes a phosphor layer containing a phosphor which is excited by light of a first wavelength and radiates light of a second wavelength different from the first wavelength, a first optical member provided on a first surface of the phosphor layer and configured to concentrate light in the phosphor layer, and a second optical member provided on the first surface of the phosphor layer or the same side to which the first surface faces, or on a second surface opposite to the first surface, and configured to convert light radiated from the phosphor layer into parallel light.