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:
Jul. 15, 2025
Filed:
Feb. 07, 2024
Bridgelux, Inc., Fremont, CA (US);
Tao Xu, Fremont, CA (US);
Bridgelux, Inc., Fremont, CA (US);
Abstract
An exemplary white light emitting device may include first and second LEDs operable to generate excitation light having a dominant wavelength in a range from 440 nm to 480 nm, where the first LEDs and second LEDs are mounted on a substrate; a first photoluminescence material which emits light having a peak emission wavelength in a range from 500 nm to 590 nm in response to the excitation light; and a second photoluminescence material which emits light having a peak emission wavelength in a range from 600 nm to 650 nm in response to the excitation light; wherein the first LEDs are covered by the first photoluminescence material, and the second LEDs are covered by the first and second photoluminescence materials.