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. 13, 2013
Filed:
Apr. 28, 2011
Toru Takeda, Tokyo, JP;
Akeo Kasakura, Tokyo, JP;
Shinji Takai, Ushiku, JP;
Yoshihito Sato, Ushiku, JP;
Hiroaki Sakuta, Ushiku, JP;
Toru Takeda, Tokyo, JP;
Akeo Kasakura, Tokyo, JP;
Shinji Takai, Ushiku, JP;
Yoshihito Sato, Ushiku, JP;
Hiroaki Sakuta, Ushiku, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
A light control apparatus for a LED light-emitting device comprises a driving current supply unit supplying an AC current as a driving current via a pair of terminals to the LED light-emitting device including a set of LED elements having mutually different light emission wavelength regions connected in parallel while providing opposite polarities and the pair of terminals provided to supply the driving current to the set of LED elements; an individual amount defining unit defining a positive driving current amount and a negative driving current amount respectively to be supplied to the LED light-emitting device in a positive half cycle and a negative half cycle included in one cycle of the AC current respectively.