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:
Jul. 14, 2015
Filed:
Jul. 11, 2013
Applicant:
Panasonic Corporation, Osaka, JP;
Inventors:
Takashi Saito, Osaka, JP;
Toshihide Mori, Osaka, JP;
Ayako Tsukitani, Kyoto, JP;
Hiroshi Hamano, Hyogo, JP;
Akira Takashima, Hyogo, JP;
Kensuke Yamazoe, Osaka, JP;
Kouichi Wada, Saitama, JP;
Yoshinori Karasawa, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/00 (2006.01); H05B 37/02 (2006.01); H05B 39/04 (2006.01); H05B 41/36 (2006.01); H05B 33/08 (2006.01);
U.S. Cl.
CPC ...
H05B 37/0227 (2013.01); H05B 33/0857 (2013.01);
Abstract
A lighting device includes a first light source having a first S/P ratio, a second light source having a second S/P ratio that is higher than the first S/P ratio, and a controller configured to performing dimming control of light output from the first and second light sources. The controller performs the dimming control separately on the first and second light sources at least under a snow covered condition.