Prof. XinNan Li Profile

KEYWORDS: Polishing, Mirrors, Surface finishing, Optical fabrication, Telescopes, Astronomy, Cameras, Aspheric lenses, Astronomical imaging, Manufacturing

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Proceedings Article | 22 July 2016 Paper

Stressed mirror annular polishing for scale-down TMT primary segments

Xinnan Li, Zibo Jiang, Xuefei Gong, Haiying Zhang, Kunxing Chen, Yi Zheng, Bo Li, Binbin Yu, Chen Xu, Bo Ji, Qiuyun Xu

Proceedings Volume 9912, 99120A (2016) https://doi.org/10.1117/12.2231612

KEYWORDS: Mirrors, Polishing, Off axis mirrors, Polishing equipment, Surface finishing, Photovoltaics, Large telescopes, Thirty Meter Telescope, Monochromatic aberrations, Error analysis

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Proceedings Article | 22 July 2016 Paper

Research on key technical issues of contact method for large diameter off-axis aspheric segments

ZiBo Jiang, XinNan Li, YongJun Liang, Bo Li, BinBin Yu, Zhe Chen

Proceedings Volume 9912, 99120B (2016) https://doi.org/10.1117/12.2232200

KEYWORDS: Mirrors, Error analysis, Off axis mirrors, Aspheric lenses, Zernike polynomials, Monochromatic aberrations, Error analysis, Mirrors, Polishing, Off axis mirrors, Aspheric lenses, Sensors, Telescopes, Photovoltaics

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Proceedings Article | 5 August 2015 Paper

The testing of the aspheric mirror high-frequency band error

JinLong Wan, Bo Li, XinNan Li

Proceedings Volume 9621, 962110 (2015) https://doi.org/10.1117/12.2193481

KEYWORDS: Mirrors, Interferometers, Telescopes, Aspheric lenses, Error analysis, Zernike polynomials, Aspheric optics, Space telescopes, Off axis mirrors, Photovoltaics

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Proceedings Article | 22 July 2014 Paper

Kunlun Dark Universe Survey Telescope

Yongtian Zhu, Lifan Wang, Xiangyan Yuan, Bozhong Gu, Xinnan Li, Shihai Yang, Xuefei Gong, Fujia Du, Yongjun Qi, Lingzhe Xu

Proceedings Volume 9145, 91450E (2014) https://doi.org/10.1117/12.2055768

KEYWORDS: Telescopes, Mirrors, Computer programming, Control systems, Domes, Surface finishing, Assembly equipment, Optics manufacturing, CCD cameras, Image quality

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Proceedings Article | 22 July 2014 Paper

The AST3 project: Antarctic Survey Telescopes for Dome A

Xiangyan Yuan, Xiangqun Cui, Bozhong Gu, Shihai Yang, Fujia Du, Xiaoyan Li, Daxing Wang, Xinnan Li, Xuefei Gong, Haikun Wen, Zhengyang Li, Haiping Lu, Lingzhe Xu, Ru Zhang, Yi Zhang, Lifan Wang, Zhaohui Shang, Yi Hu, Bin Ma, Qiang Liu, Peng Wei

Proceedings Volume 9145, 91450F (2014) https://doi.org/10.1117/12.2055624

KEYWORDS: Telescopes, Astronomy, Domes, Charge-coupled devices, Astronomical telescopes, Thermography, Mirrors, Infrared telescopes, Infrared radiation, Computer programming

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Proceedings Article | 24 September 2012 Paper

Design and practice multi-channel real time system on deformation control of optical plate

Yi Zheng, Yin-hu Wang, Ying Li, Xin-nan Li

Proceedings Volume 8451, 845132 (2012) https://doi.org/10.1117/12.924265

KEYWORDS: Actuators, Active optics, Polishing, Telescopes, Surface finishing, Adaptive optics, Control systems, Mirrors, Deformable mirrors, Control systems design

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Proceedings Article | 13 September 2012 Paper

Development of testing convex hyperbolic mirror using Hindle method based on stitching technology

Zi-bo Jiang, Xin-nan Li, Bo Ji

Proceedings Volume 8450, 84504Z (2012) https://doi.org/10.1117/12.925308

KEYWORDS: Mirrors, Spherical lenses, Telescopes, Standards development, Space telescopes, Photovoltaics, Interferometers, Optical testing, Large telescopes, Image quality standards

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Proceedings Article | 6 August 2010 Paper

Mirror seeing control of large infrared solar telescope

Haiying Zhang, Xinnan Li, Xiaohui Meng, Houkun Ni

Proceedings Volume 7733, 77332Y (2010) https://doi.org/10.1117/12.856099

KEYWORDS: Mirrors, Infrared telescopes, Solar telescopes, Polishing, Infrared radiation, Aluminum, Telescopes, Surface finishing, Convection, Nickel

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Proceedings Article | 6 August 2010 Paper

Progress of Antarctic Schmidt Telescopes (AST3) for Dome A

Xiangyan Yuan, Xiangqun Cui, Xuefei Gong, Daxing Wang, Zhengqiu Yao, Xinnan Li, Haikun Wen, Yajun Zhang, Ru Zhang, Lingzhe Xu, Fang Zhou, Lifan Wang, Zhaohui Shang, LongLong Feng

Proceedings Volume 7733, 77331V (2010) https://doi.org/10.1117/12.856671

KEYWORDS: Telescopes, Domes, Astronomy, Mirrors, Astronomical telescopes, Image quality, Astronomical imaging, Control systems, Charge-coupled devices, Observatories

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Proceedings Article | 6 August 2010 Paper

Field of view and coma correction of a two mirror off-axis system

Jingquan Cheng, Xinnan Li, Ming Liang, Brian Mason

Proceedings Volume 7733, 77335J (2010) https://doi.org/10.1117/12.855878

KEYWORDS: Monochromatic aberrations, Mirrors, Off axis mirrors, Infrared telescopes, Radio optics, Infrared radiation, Signal to noise ratio, Radio telescopes, Telescopes, Astronomy

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Proceedings Article | 19 July 2010 Paper

Investigation of sub-aperture polish techniques for manufacturing astronomical mirror

Yi Zheng, Xin-nan Li, Wei-yuan Guo, Zhi-chuan Dong, Bin Liang, Zi-bo Jiang

Proceedings Volume 7739, 77390E (2010) https://doi.org/10.1117/12.856789

KEYWORDS: Polishing, Ion beam finishing, Surface finishing, Ion beams, Mirrors, Optics manufacturing, Astronomy, Manufacturing, Astronomical imaging, Mathematical modeling

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Proceedings Article | 23 July 2008 Paper

Metallic mirror experiment with 1.6 m coating machine

Jinfeng Wang, Liaoyun Qiao, Xinnan Li, Xiangqun Cui

Proceedings Volume 7018, 701851 (2008) https://doi.org/10.1117/12.787081

KEYWORDS: Reflectivity, Mirrors, Silver, Reflectors, Coating, Coating equipment, Aluminum, Electron beams, Astronomy, Astronomical imaging

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Proceedings Article | 9 July 2008 Paper

Integrated thermal disturbance analysis of optical system of astronomical telescope

Dehua Yang, Zibo Jiang, Xinnan Li

Proceedings Volume 7017, 70171N (2008) https://doi.org/10.1117/12.788931

KEYWORDS: Telescopes, Zemax, Thermal modeling, Zernike polynomials, Mirrors, Finite element methods, Image quality, Space telescopes, Optical components, Astronomical telescopes

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During operation, astronomical telescope will undergo thermal disturbance, especially more serious in solar telescope, which may cause degradation of image quality. As drives careful thermal load investigation and measure applied to assess its effect on final image quality during design phase. Integrated modeling analysis is boosting the process to find comprehensive optimum design scheme by software simulation. In this paper, we focus on the Finite Element Analysis (FEA) software-ANSYS-for thermal disturbance analysis and the optical design software-ZEMAX-for optical system design. The integrated model based on ANSYS and ZEMAX is briefed in the first from an overview of point. Afterwards, we discuss the establishment of thermal model. Complete power series polynomial with spatial coordinates is introduced to present temperature field analytically. We also borrow linear interpolation technique derived from shape function in finite element theory to interface the thermal model and structural model and further to apply the temperatures onto structural model nodes. Thereby, the thermal loads are transferred with as high fidelity as possible. Data interface and communication between the two softwares are discussed mainly on mirror surfaces and hence on the optical figure representation and transformation. We compare and comment the two different methods, Zernike polynomials and power series expansion, for representing and transforming deformed optical surface to ZEMAX. Additionally, these methods applied to surface with non-circular aperture are discussed. At the end, an optical telescope with parabolic primary mirror of 900 mm in diameter is analyzed to illustrate the above discussion. Finite Element Model with most interested parts of the telescope is generated in ANSYS with necessary structural simplification and equivalence. Thermal analysis is performed and the resulted positions and figures of the optics are to be retrieved and transferred to ZEMAX, and thus final image quality is evaluated with thermal disturbance.

Proceedings Article | 29 September 2004 Paper

Design of a novel high-precision opto-electronic levelmeter

Guoping Li, Qiuhui He, Xinnan Li

Proceedings Volume 5495, (2004) https://doi.org/10.1117/12.551192

KEYWORDS: Charge-coupled devices, Optoelectronics, Light, Mirrors, Image processing, CCD image sensors, Astronomy, Mirror pointing, Data processing, Image resolution

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Proceedings Article | 24 September 2004 Paper

Strategies of primary mirror segment fabrication for CFGT

Xinnan Li, Xiangqun Cui, Weiyuan Guo, Zheng Zhu, Guanghui Xiao, Yi Zheng

Proceedings Volume 5494, (2004) https://doi.org/10.1117/12.551209

KEYWORDS: Mirrors, Ion beams, Polishing, Surface finishing, Telescopes, Monochromatic aberrations, Off axis mirrors, Optical fabrication, Optical spheres, Spherical lenses

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Proceedings Article | 6 October 2000 Paper

Manufacturing of the (phi)500-mm F/2 ellipsoid mirror

Xinnan Li, Junhua Pan, Xingtao Liu, Lijun Yuan, Zili Xia

Proceedings Volume 4231, (2000) https://doi.org/10.1117/12.402767

KEYWORDS: Mirrors, Surface finishing, Manufacturing, Optics manufacturing, Optical testing, Polishing, Wavefronts, Autocollimators, Lithium, Error analysis

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Proceedings Article | 6 October 2000 Paper

Compensator for even high-order aspheric surfaces

Junhua Pan, Xinnan Li

Proceedings Volume 4231, (2000) https://doi.org/10.1117/12.402779

KEYWORDS: Mirrors, Aspheric lenses, Wavefronts, Diffraction, Off axis mirrors, Optical testing, Lithium, Optics manufacturing, Optical components, Astronomical imaging

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