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. 13, 2024
Filed:
Dec. 12, 2019
Foshan Nationstar Optoelectronics Co., Ltd., Guangdong, CN;
Jinhui Zhang, Guangdong, CN;
Yikai Yuan, Guangdong, CN;
Long Zhao, Guangdong, CN;
Chuyi Li, Guangdong, CN;
Cheng Li, Guangdong, CN;
FOSHAN NATIONSTAR OPTOELECTRONICS CO., LTD, Guangdong, CN;
Abstract
A white light emitting device, a light bar and a light apparatus. A relative spectrum of the white light emitting device is ϕ(λ). A relative spectrum of a black body radiation with a corresponding color temperature is S(λ). An area normalization is performed on ϕ(λ) and S(λ) to convert an equal energy spectrum ϕ′(λ) of the white light emitting device and an equal energy spectrum S′(λ) of the black body radiation with the corresponding color temperature. A degree of similarity R of the equal energy spectrum of the white light emitting device and the equal energy spectrum of the black body radiation satisfies the following formula: when λi is 380 nm, λn is 680 nm, R≥85%.