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1. (WO2017148344) WAVELENGTH CONVERSION DEVICE AND LIGHT SOURCE SYSTEM

Pub. No.:    WO/2017/148344    International Application No.:    PCT/CN2017/074959
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Tue Feb 28 00:59:59 CET 2017
IPC: F21K 9/64
F21K 9/20
Applicants: APPOTRONICS CORPORATION LIMITED
深圳市绎立锐光科技开发有限公司
Inventors: TIAN, Zifeng
田梓峰
XU, Yanzheng
许颜正
Title: WAVELENGTH CONVERSION DEVICE AND LIGHT SOURCE SYSTEM
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.