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:
Nov. 13, 2018
Filed:
May. 07, 2014
Appotronics China Corporation, Shenzhen, CN;
Quan Zhang, Shenzhen, CN;
Fei Hu, Shenzhen, CN;
Other;
Abstract
A light emitting device includes first, second and third LED arrays and a wavelength-based light combination device. The first LED array includes blue LEDs; the second LED array includes yellow fluorescent LEDs or green fluorescent LEDs and green LEDs; the third LED array includes red LEDs and amber LEDs. The light combination device includes first and second filters. The first filter reflects wavelengths below or equal to λand transmits other wavelengths; the second filter transmits wavelengths below or equal to λand reflects other wavelengths, where 470 nm≤λ≤500 nm, 560 nm≤λ≤590 nm. The first and second filters combine the lights from the first, second and third LED arrays into one beam. The light emitting device can emit a white light with high color rendering index. Also disclosed is a stage lighting system employing the light emitting device.