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. 02, 2010
Filed:
Jul. 26, 2004
Yoshinori Shimizu, Tokushima, JP;
Ryuhei Tsuji, Tokushima, JP;
Tomoaki Inuzuka, Tokushima, JP;
Masayuki Taru, Tokushima, JP;
Katsunori Mitani, Tokushima, JP;
Harumi Sakuragi, Tokushima, JP;
Yasuhiro Kunisaki, Tokushima, JP;
Yoshinori Shimizu, Tokushima, JP;
Ryuhei Tsuji, Tokushima, JP;
Tomoaki Inuzuka, Tokushima, JP;
Masayuki Taru, Tokushima, JP;
Katsunori Mitani, Tokushima, JP;
Harumi Sakuragi, Tokushima, JP;
Yasuhiro Kunisaki, Tokushima, JP;
Nichia Corporation, Anan-Shi, JP;
Abstract
A light emitting apparatus comprises at least two light emitting elements with different chromaticities; and a light emitting element controller that controls light emitted from the light emitting apparatus so as to be a desired chromaticity. The light emitting element controller controls the light emitting elements based on a predetermined function of light emitting element temperature variation. Accordingly, it is possible to provide a light emitting apparatus that, even if the temperature varies, has a stable desired chromaticity without chromaticity variation. In addition, since control is performed based on a property function of wavelength fluctuation due to light emitting element temperature variation, it is possible to provide more reliable reproduction characteristics, and a desired chromaticity.