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. 10, 2015
Filed:
Dec. 20, 2011
Sayaka Tomiyama, Kanagawa-ken, JP;
Masahiko Kamata, Kanagawa-ken, JP;
Toshihiko Sasai, Kanagawa-ken, JP;
Hitoshi Kawano, Kanagawa-ken, JP;
Naoko Iwai, Kanagawa-ken, JP;
Masatoshi Kumagai, Kanagawa-ken, JP;
Toru Ishikita, Kanagawa-ken, JP;
Hiromichi Nakajima, Kanagawa-ken, JP;
Sayaka Tomiyama, Kanagawa-ken, JP;
Masahiko Kamata, Kanagawa-ken, JP;
Toshihiko Sasai, Kanagawa-ken, JP;
Hitoshi Kawano, Kanagawa-ken, JP;
Naoko Iwai, Kanagawa-ken, JP;
Masatoshi Kumagai, Kanagawa-ken, JP;
Toru Ishikita, Kanagawa-ken, JP;
Hiromichi Nakajima, Kanagawa-ken, JP;
Toshiba Lighting & Technology Corporation, Kanagawa, JP;
Abstract
An illuminating device includes a plurality of kinds of LEDs that emit light having different color temperatures; a plurality of LED lighting circuits that independently light the LEDs for each color temperature of emitted light; and a control unit that selects a first control changing illuminance of the LEDs as a whole by controlling the lighting of the LEDs and a second control changing the colors of light of the LEDs as a whole by controlling the lighting of the LEDs, and corrects an illuminance difference generated before and after the second control.