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. 08, 2022
Filed:
Oct. 30, 2017
Sanken Electric Co., Ltd., Niiza, JP;
Takaya Ueno, Niiza, JP;
Hitoshi Murofushi, Niiza, JP;
Sanken Electric Co., Ltd., Niiza, JP;
Abstract
A light emitting device () includes: three or more light emitting units () that individually include blue light emitting element, a wavelength range of the blue light emitting element accommodated in respective packages being different from each other. The light emitting device mixes output lights from the light emitting units () to output white light of a predetermined chromaticity. In an xy chromaticity diagram, the chromaticity of the output light from each of light emitting units () is located at a distance from the predetermined chromaticity. The difference between the chromaticity of the output light from each of the light emitting units () and the predetermined chromaticity is not greater than 0.04.