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:
Aug. 25, 2015
Filed:
Sep. 13, 2013
Applicants:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Materials Co., Ltd., Yokohama, JP;
Inventors:
Assignees:
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA MATERIALS CO., LTD., Yokohama-Shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 1/62 (2006.01); F21K 99/00 (2010.01); C09K 11/77 (2006.01); H05B 33/08 (2006.01); C09K 11/02 (2006.01); H01L 33/50 (2010.01);
U.S. Cl.
CPC ...
F21K 9/56 (2013.01); C09K 11/02 (2013.01); C09K 11/7734 (2013.01); H05B 33/0857 (2013.01); H01L 33/502 (2013.01); H01L 33/507 (2013.01); Y02B 20/181 (2013.01);
Abstract
A white light sourceof an embodiment has color temperature of 2600 [K] or more and less than 3200 [K]. The white light source of the embodiment has a ratio of a minimum emission intensity to a maximum emission intensity in a wavelength region of from 450 to 610 [nm] on an emission spectrum of 0.16 or more and less than 0.35.