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A variable divergence angle laser beam shaping system with aspherical lenses
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Paper Abstract

The laser beam shaping system which can convert Gaussian beam to flat-top beam has been widely applied in laser illuminating, laser materials processing and laser medical treatment, etc. For the application of laser illuminating, a laser beam shaping system with simple structure and high efficiency was developed, which used two aspherical lenses to convert the 2 mm waist diameter Gaussian beam to a flat-top beam. To achieve a long-distance illuminating for different object positions, the shaped laser beam divergence angle is required variable. Therefore, a continuous zoom lens which had the zoom ratio of 18.4:1.04 was added to the front of the aspherical lenses. By moving the axial positions of the zoom lens, the continuous change of the beam divergence angle can be achieved. With the aid of ZEMAX software, this laser beam shaping system was simulated and optimized. The simulation results showed that the beam divergence angle can be continuously changed in 1°~18°, while the laser facular area energy distribution keeping uniform of 5m, 45m and 65m illuminating distances, which can satisfy the different long-distances laser illuminating requirements.

Paper Details

Date Published: 30 January 2019
PDF: 6 pages
Proc. SPIE 10841, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Meta-Surface-Wave and Planar Optics, 108410X (30 January 2019); doi: 10.1117/12.2508216
Show Author Affiliations
Zijuan Ji, Hubei Univ. of Education (China)
Qiusha Zheng, Hubei Univ. of Education (China)
Jiaqi Bao, Wenhua College (China)


Published in SPIE Proceedings Vol. 10841:
9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Meta-Surface-Wave and Planar Optics
Mingbo Pu; Xiaoliang Ma; Xiong Li; Minghui Hong; Changtao Wang; Xiangang Luo, Editor(s)

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