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:
Jan. 01, 2013
Filed:
Sep. 24, 2008
Hirofumi Takaki, Aichi, JP;
Shin Ukegawa, Kyoto, JP;
Minoru Maehara, Osaka, JP;
Hirofumi Konishi, Osaka, JP;
Masanao Okawa, Nara, JP;
Hirofumi Takaki, Aichi, JP;
Shin Ukegawa, Kyoto, JP;
Minoru Maehara, Osaka, JP;
Hirofumi Konishi, Osaka, JP;
Masanao Okawa, Nara, JP;
Panasonic Corporation, Osaka, JP;
Abstract
It is an object to provide a light control apparatus and a lighting appliance using the same which enables to increase luminous efficiency in the light control. The lighting appliance includes a light source and a light control apparatus. The light control apparatus includes an electric current output circuit which outputs a constant electric current for lighting to a light source configured of an organic electroluminescence device, an electric current control circuit which controls an intensity of a driving electric current outputted from the electric current output circuit, and the electric current control circuit biases a direct current component so as to vary the driving electric current periodically between a predetermined maximum value and a predetermined minimum value and flows in the same direction at all times in the light control of the light source.