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1. (WO2018196196) WAVELENGTH CONVERSION DEVICE, ILLUMINATING SOURCE, AND PROJECTION APPARATUS

Pub. No.:    WO/2018/196196    International Application No.:    PCT/CN2017/094798
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Sat Jul 29 01:59:59 CEST 2017
IPC: G03B 21/20
F21V 9/10
Applicants: APPOTRONICS CORPORATION LIMITED
深圳市光峰光电技术有限公司
Inventors: TIAN, Zifeng
田梓峰
HU, Fei
胡飞
XU, Yanzheng
许颜正
Title: WAVELENGTH CONVERSION DEVICE, ILLUMINATING SOURCE, AND PROJECTION APPARATUS
Abstract:
Provided are a wavelength conversion device, an illuminating source, and a projection apparatus. Th wavelength conversion device comprises: a wavelength conversion body (10) used to at least partially convert received exciting light (30) to excited light, the exciting light (30) entering from a first end portion of the wavelength conversion body (10), and the excited light exiting from a second end portion of the wavelength conversion body (10); and a dichroic sheet (20) provided at the second end portion of the wavelength conversion body (10) in a direction perpendicular to an optical axis of the wavelength conversion body (10). By arranging the dichroic sheet (20) at the second end portion of the wavelength conversion body (10) in the direction perpendicular to the optical axis of the wavelength conversion body (10), unconverted exciting light is reflected back to the wavelength conversion body (10) by the dichroic sheet (20) to undergo conversion again so as to be converted to excited light, thereby improving light conversion efficiency of the wavelength conversion body (10).