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:
Feb. 14, 2017
Filed:
Aug. 26, 2015
Applicants:
Ryohsuke Nishi, Kanagawa, JP;
Taroh Shirai, Kanagawa, JP;
Norihiro Yamamoto, Kanagawa, JP;
Inventors:
Assignee:
RICOH COMPANY, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/00 (2006.01); H05B 33/08 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0815 (2013.01); F21K 9/27 (2016.08); Y02B 20/348 (2013.01); Y02B 20/383 (2013.01);
Abstract
An illumination light includes: a bridge diode that performs full-wave rectification on an alternating-current signal; a switching converter that includes a switching device and that converts the alternating-current signal on which the full-wave rectification has been performed, into a direct-current signal; a controller that controls on/off timing of the switching device; and a semiconductor light emitting element that is connected to the switching converter and the controller and to which the direct-current signal is output.