Narrow beam uniform illumination design of COB light source

Huang Conggao; Hu Miao; Zhang Chunyang; Xu Mengmeng; Li Qiliang; Bi Meihua; Zhou Xuefang

doi:10.11884/HPLPB202133.200224

Volume 33 Issue 2

Jan. 2021

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Article Navigation > High Power Laser and Particle Beams > 2021 > 33(2): 029002

Huang Conggao, Hu Miao, Zhang Chunyang, et al. Narrow beam uniform illumination design of COB light source[J]. High Power Laser and Particle Beams, 2021, 33: 029002. doi: 10.11884/HPLPB202133.200224

Citation:

Huang Conggao, Hu Miao, Zhang Chunyang, et al. Narrow beam uniform illumination design of COB light source[J]. High Power Laser and Particle Beams, 2021, 33: 029002. doi: 10.11884/HPLPB202133.200224

Huang Conggao, Hu Miao, Zhang Chunyang, et al. Narrow beam uniform illumination design of COB light source[J]. High Power Laser and Particle Beams, 2021, 33: 029002. doi: 10.11884/HPLPB202133.200224

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Narrow beam uniform illumination design of COB light source

doi: 10.11884/HPLPB202133.200224

1.
College of Communication Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
2.
Research Institute of Chemical Defense, Beijing 102205, China

Received Date: 2020-07-31
Rev Recd Date: 2021-01-04
Publish Date: 2021-01-07

Abstract

Abstract

To achieve high-power white LED system with high uniformity and narrow beam, an optical system composed of Chips On Board (COB), compound parabolic reflector, Fresnel lens and aspheric lens is designed. In the design, based on the COB light distribution curve, the light source simulation model of the optical system is built firstly. Then the light source beam is converged by the compound parabolic reflector, and the spill light is controlled by the Fresnel lens. finally, an aspheric lens is used for collimating light source beam. The TracePro software is used for ray tracing simulation. According to the simulated results, an experimental setup is developed for experimental testing. The testing results show that the divergence angle of the optical system is ±7.9°, and the circular uniformity is 96% with the distance of 0.7 m, and the overall light efficiency reaches 60%.
- narrow beam,
- COB integrated light source,
- uniform illumination,
- aspheric lens,
- compound parabolic reflector

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References(15)

References

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