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:
Dec. 18, 2018
Filed:
Mar. 01, 2017
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Keiichiro Saito, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/225 (2006.01); G03B 15/05 (2006.01); H05B 37/02 (2006.01); H05B 41/39 (2006.01); H05B 41/32 (2006.01);
U.S. Cl.
CPC ...
H04N 5/2256 (2013.01); G03B 15/05 (2013.01); H05B 37/0227 (2013.01); H05B 41/325 (2013.01); H05B 41/39 (2013.01); G03B 2215/0592 (2013.01);
Abstract
A lighting device capable of performing satisfactory light emission control while suppressing a rise in the temperature of the lighting device irrespective of the attachment of an optical accessory. In the lighting device, an accessory detection section detects whether or not an optical accessory for color adjustment or light distribution angle adjustment is attached to a light emission section, and light emission performed by the light emission section is limited based on a result of detection performed by the accessory detection section.