Title:
WAVELENGTH CONVERSION DEVICE AND LIGHT SOURCE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/148344
Kind Code:
A1
Abstract:
A wavelength conversion device and a light source system. The wavelength conversion device comprises a reflective film layer (30') a dielectric layer (20'), a fluorescent powder layer (10'), a dielectric layer (20'), a quantum dot film layer (40') and a transmission thermal conducting substrate layer (50') that are successively superposed. The reflective film layer (30') is used for reflecting specific coloured light with an angle greater than a pre-determined angle, transmitting specific coloured light with an angle smaller than a pre-determined angle, and reflecting other coloured light. The refractive index of the dielectric layer (20') is lower than the refractive index of the fluorescent powder layer (10'). A luminescence peak wavelength of the quantum dot film layer (40') is greater than a luminescence peak wavelength of the fluorescent powder layer (10'). The wavelength conversion device has the characteristics of high light-efficiency, good thermal stability, and high colour purity.
More Like This:
Inventors:
TIAN ZIFENG (CN)
XU YANZHENG (CN)
XU YANZHENG (CN)
Application Number:
PCT/CN2017/074959
Publication Date:
September 08, 2017
Filing Date:
February 27, 2017
Export Citation:
Assignee:
APPOTRONICS CHINA CORP (CN)
International Classes:
F21K9/64; F21K9/20
Foreign References:
| CN205447345U | 2016-08-10 | |||
| CN102410499A | 2012-04-11 | |||
| KR20100029519A | 2010-03-17 | |||
| CN103840067A | 2014-06-04 | |||
| CN105093776A | 2015-11-25 | |||
| CN105276525A | 2016-01-27 |
Download PDF: