Mr. Le Shen Profile

Le Shen

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Publications (6)

Proceedings Article | 13 December 2021 Paper

Investigation of wheel polishing technology based on industrial robot

YongSheng Yao, QiXin Li, Le Shen, JiaoTeng Ding, Zhen Ma, Xuewu Fan

Proceedings Volume 12071, 120710L (2021) https://doi.org/10.1117/12.2605412

KEYWORDS: Polishing, Surface finishing, Aspheric lenses, Control systems, Optical components, Photovoltaics, Optical signal processing, Robotic systems, Ion beams, Computer programming

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Proceedings Article | 9 October 2021 Presentation + Paper

3D printing active variable curvature mirror research for zoom imaging

Xiaopeng Xie, Liang Xu, Yongjie Wang, Le Shen, Mingyang Yang, Wenhui Fan, Hui Zhao

Proceedings Volume 11895, 1189505 (2021) https://doi.org/10.1117/12.2601500

KEYWORDS: Actuators, Zoom lenses, 3D printing, Optics manufacturing, Mirrors, Imaging systems, Surface finishing, Polishing, Nickel, Manufacturing

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Proceedings Article | 5 November 2020 Paper

Investigation of dwell time based on Lucy-Richardson algorithm and Gercherg surface continuation algorithm

XinJie Qian, Zhen Ma, Yongsheng Yao, Le Shen

Proceedings Volume 11568, 1156814 (2020) https://doi.org/10.1117/12.2579836

KEYWORDS: Surface finishing, Image processing, Image restoration, Mathematical modeling, Computer simulations, Polishing, Optical components

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Proceedings Article | 16 January 2019 Paper

Heavy-calibre off-axis aspheric surface polishing by industrial robot

YongSheng Yao, Zhen Ma, JiaoTeng Ding, QinFang Chen, Xuewu Fan, Le Shen, QiXin Li

Proceedings Volume 10838, 1083803 (2019) https://doi.org/10.1117/12.2504755

KEYWORDS: Polishing, Surface finishing, Head, Photovoltaics, Aspheric lenses, Optical components, Optics manufacturing, Control systems, Robotic systems, Process control

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Proceedings Article | 24 October 2017 Paper

Variable curvature mirror having variable thickness: design and fabrication

Hui Zhao, Xiaopeng Xie, Liang Xu, Jiaoteng Ding, Le Shen, Jie Gong

Proceedings Volume 10463, 104631D (2017) https://doi.org/10.1117/12.2285184

KEYWORDS: Mirrors

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Proceedings Article | 19 October 2016 Paper

Design, fabrication, and testing of duralumin zoom mirror with variable thickness

Zhao Hui, Xiaopeng Xie, Liang Xu, Jiaoteng Ding, Le Shen, Meiying Liu, Jie Gong

Proceedings Volume 10154, 1015409 (2016) https://doi.org/10.1117/12.2243992

KEYWORDS: Zoom lenses, Mirrors, Optical fabrication

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Zoom mirror is a kind of active optical component that can change its curvature radius dynamically. Normally, zoom mirror is used to correct the defocus and spherical aberration caused by thermal lens effect to improve the beam quality of high power solid-state laser since that component was invented. Recently, the probable application of zoom mirror in realizing non-moving element optical zoom imaging in visible band has been paid much attention. With the help of optical leveraging effect, the slightly changed local optical power caused by curvature variation of zoom mirror could be amplified to generate a great alteration of system focal length without moving elements involved in, but in this application the shorter working wavelength and higher surface figure accuracy requirement make the design and fabrication of such a zoom mirror more difficult. Therefore, the key to realize non-moving element optical zoom imaging in visible band lies in zoom mirror which could provide a large enough saggitus variation while still maintaining a high enough surface figure. Although the annular force based actuation could deform a super-thin mirror having a constant thickness to generate curvature variation, it is quite difficult to maintain a high enough surface figure accuracy and this phenomenon becomes even worse when the diameter and the radius-thickness ratio become bigger. In this manuscript, by combing the pressurization based actuation with a variable thickness mirror design, the purpose of obtaining large saggitus variation and maintaining quite good surface figure accuracy at the same time could be achieved. A prototype zoom mirror with diameter of 120mm and central thickness of 8mm is designed, fabricated and tested. Experimental results demonstrate that the zoom mirror having an initial surface figure accuracy superior to 1/50λ could provide at least 21um saggitus variation and after finishing the curvature variation its surface figure accuracy could still be superior to 1/20λ, which proves that the effectiveness of the theoretical design.

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