LIGHT SOURCE STRUCTURE, COLOR WHEEL, AND PROJECTION DEVICE

WIPO Patent Application WO/2021/139501

A1

A light source structure (1), comprising a laser light source (11), a color wheel (10), a first guide component (13), and a second guide component (14). The laser light source (11) is used for emitting an excitation light. The color wheel (10) comprises an inner ring (100) and an outer ring (110) which are concentrically arranged. The inner ring (100) comprises a light conversion area (101). The light conversion area (101) generates an excited light under the excitation of the excitation light. The outer ring (110) comprises a first guide area (112) and a second guide area (114). Both the first guide area (112) and the second guide area (114) are used for guiding the excitation light emitted by the laser light source (11). The first guide component (13) is used for guiding an excitation light exited from the first guide area (112) to exit along an emergent optical path. The second guide component (14) is used for guiding an excitation light exited from the second guide area (114) to the light conversion area (101), and is also used for guiding an excited light exited from the light conversion area (101) to the emergent optical path. The excitation light of the provided light source structure (1) passes through few optical elements, which reduces the energy loss and improves the optical utilization rate of the light source structure (1). Also provided are a water wheel (10) and a projection device.

GUO ZUQIANG (CN)
YANG BINGKE (CN)
WANG ZEQIN (CN)
LI YI (CN)

PCT/CN2020/137104

July 15, 2021

December 17, 2020

Click for automatic bibliography generation  

APPOTRONICS CORP LTD (CN)

G03B21/20

CN109491187A	2019-03-19
CN106886124A	2017-06-23
CN208796003U	2019-04-26
CN208737199U	2019-04-12
US20130114049A1	2013-05-09

View/Download PDF      PDF Help

Previous Patent: MOUNTING STRUCTURE FOR OPTICAL ASSEMBLY, AND OPTICAL ASSEMBLY

Next Patent: HUMAN EYE PROTECTION METHOD FOR PROJECTOR, AND PROJECTOR