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:
Apr. 13, 2021
Filed:
Nov. 30, 2017
Toyoda Gosei Co., Ltd., Kiyosu, JP;
Shota Shimonishi, Kiyosu, JP;
Tomohiro Miwa, Kiyosu, JP;
Satomi Seki, Kiyosu, JP;
Daisuke Kato, Kiyosu, JP;
Shigeo Takeda, Kiyosu, JP;
Shota Yamamori, Kiyosu, JP;
Yukihiro Demukai, Kiyosu, JP;
Ikuhiro Oya, Kiyosu, JP;
TOYODA GOSEI CO., LTD., Kiyosu, JP;
Abstract
A light emitting device includes a light emitting element that emits a light having a peak emission wavelength in a wavelength range of not less than 410 nm and not more than 425 nm, and a phosphor emitting a fluorescence having a peak at a longer wavelength side than the peak emission wavelength of light emitted from the light emitting element. A general color rendering index Ra of fluorescence emitted from the phosphor is not less than 95. A general color rendering index Ra of mixed light of light emitted from the light emitting element and fluorescence emitted from the phosphor is higher than a general color rendering index Ra of fluorescence emitted from the phosphor. A color rendering index Rf of the mixed light is not less than 96.