Dr. Gangyi Zou Profile

Dr. Gangyi Zou

at Xi'an Institute of Optics And Precision Mechanics

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Author

Publications (17)

Proceedings Article | 27 November 2024 Paper

Variable curvature mirror based optical zooming used for space-borne targets monitoring: review and progress

Hui Zhao, Gangyi Zou, Xiaopeng Xie, Liang Xu, Zeyuan Yin, Mingyang Yang, Xuewu Fan

Proceedings Volume 13237, 132370G (2024) https://doi.org/10.1117/12.3037410

KEYWORDS: Mirrors, Design, Zoom lenses, Imaging systems, Telescopes, Deformable mirrors, Optical imaging, Mirror surfaces, Matrices, Deformation

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At present, the space-borne optical camera installed on satellite platform used for space targets monitoring usually adopts optical system having fixed length and therefore the corresponding field of view cannot be changed either. However, searching for targets of interest needs large field of view but powerful details resolving capability depends on long focal length instead. In order to realize searching within large field of view and high-resolution imaging within small field of view by using one optical system, zooming is an ideal choice. Nowadays, optical zooming is the most popular zooming technique and by introducing zooming group and compensating group at the same time, not only the focal length could be changed but also the focal plane could be stabilized. However, mechanical moving elements based traditional optical zooming has obvious drawbacks, for example relatively low zoom speed, possible disturbance to platform stability and reliability decreasing. Therefore, optical zooming without macroscopic moving elements has been paid much attention and the key lies in the use of variable curvature mirror (VCM). By combining variable curvature mirror and optical leveraging effect, the slight variation of curvature radius of VCM can generate large optical zooming. On the one hand, the fewer the number of VCM used is, the bigger the saggitus variation of each variable curvature mirror will be. On the other hand, large zoom factor needs large saggitus variation but aberrations turn up correspondingly as well. Therefore, how to balance the number of variable curvature mirrors, the reasonable saggitus variation and better aberration compensation within limited volume are the key to system design. In this manuscript, first of all, the current development status of variable curvature mirror based optical zooming are systematically reviewed and our research progress on this technique is also introduced. After that, the design method is described and one typical design example is presented. At the same time the effectiveness of digital restoration in improving the imaging quality is demonstrated as well. Finally, the development tendency of variable curvature mirror based optical zooming is simply discussed.

Proceedings Article | 27 November 2024 Poster + Paper

Method of design and optimization process of variable curvature mirror with variable thickness distribution

Xiaopeng Xie, Gangyi Zou, Liang Xu, Mingyang Yang, Siyu Xia, Chuang Li, Wenhui Fan, Xuewu Fan, Hui Zhao

Proceedings Volume 13237, 1323714 (2024) https://doi.org/10.1117/12.3035424

KEYWORDS: Deformation, Monochromatic aberrations, Zoom lenses, Mirrors, Imaging systems, Design, Spherical lenses, Optical design, Finite element methods, Optics manufacturing

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Proceedings Article | 28 November 2023 Poster + Paper

Depth of focus extension of space-borne optical camera through variable curvature mirror

Hui Zhao, Xiaopeng Xie, Mingyang Yang, Gangyi Zou, Yating Zhang, Xuewu Fan

Proceedings Volume 12765, 127651H (2023) https://doi.org/10.1117/12.2687237

KEYWORDS: Cameras, Space mirrors, Mirrors, Switching, Optical transfer functions, Optical sensing, Mirror surfaces, Digital imaging

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Proceedings Article | 13 December 2021 Paper

Design of the active cooling focal plane component for the space astronomy telescope

Liangjie Feng, Chenjie Wang, Gangyi Zou

Proceedings Volume 12075, 1207505 (2021) https://doi.org/10.1117/12.2605265

KEYWORDS: Charge-coupled devices, Sensors, Space telescopes, Astronomical telescopes, Telescopes, Optical instrument design, Silicon carbide, Signal to noise ratio, Astronomy, Structural design

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Proceedings Article | 13 December 2021 Paper

The research of Φ1400mm SiC mirror for fabrication, test and alignment

Liangjie Feng, Gangyi Zou, Guorui Ren, Wei Wang

Proceedings Volume 12070, 120700G (2021) https://doi.org/10.1117/12.2605024

KEYWORDS: Mirrors, Distortion, Silicon carbide, Surface finishing, Polishing, Thermography, Optical fabrication, Optics manufacturing, Optical testing, Thermal effects

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Proceedings Article | 9 October 2021 Presentation + Paper

Variable curvature mirror-based focus adjusting without moving elements designed for large aperture space-borne optical camera

Hui Zhao, Xiaopeng Xie, Gangyi Zou, Liang Xu, Jingxuan Wei, Xuewu Fan

Proceedings Volume 11895, 118950B (2021) https://doi.org/10.1117/12.2601226

KEYWORDS: Mirrors, Cameras, Diffraction, Optical transfer functions, Modulation transfer functions, Information operations, Optical components, Prototyping, Mathematical modeling, Zoom lenses

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Proceedings Article | 9 October 2021 Presentation + Paper

Experimental research on wave-front coded imaging technique applied to large aperture space-borne optical camera

Hui Zhao, Jiao Mi, Chuang Li, Gangyi Zou, Xuewu Fan, Jingxuan Wei

Proceedings Volume 11895, 118950H (2021) https://doi.org/10.1117/12.2601224

KEYWORDS: Cameras, Optical transfer functions, Prototyping, Imaging systems, Satellites, Collimators, Wavefronts, Satellite navigation systems, Satellite communications, Optical design

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Proceedings Article | 13 December 2020 Paper

The Visible Telescope onboard the Chinese-French SVOM satellite

Xuewu Fan, Gangyi Zou, Jianyan Wei, Yulei Qiu, Wei Gao, Wei Wang, Wengang Yang, Jian Zhang, Chuang Li, Hui Zhao, Lijun Dan, Zongxi Song, Liangjie Feng, Guorui Ren, Chao Huang, Hao Yuan, Zhonghan Sun, Fengtao Wang, Chenjie Wang, Wei Li, Chao Shen, Ning Qi, Yue Pan

Proceedings Volume 11443, 114430Q (2020) https://doi.org/10.1117/12.2561854

KEYWORDS: Satellites, Telescopes, Charge-coupled devices, Astronomy, Visible radiation, Gamma radiation, Near infrared, Sensors, Control systems, Combined lens-mirror systems

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Proceedings Article | 5 November 2020 Paper

Design of a compact freeform optical system via the surface contribution analysis method

Gangyi Zou, Xuewu Fan, Zhihai Pang

Proceedings Volume 11570, 115700H (2020) https://doi.org/10.1117/12.2579719

KEYWORDS: Optical design, Mirrors, Wavefronts, Freeform optics, Geometrical optics, Zernike polynomials, Ray tracing

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Proceedings Article | 7 October 2020 Paper

Research on compact design and reduced structure analysis of a small camera for ocean remote sensing

Yang Song, Bin Hu, Wenyi Chai, Gangyi Zou, Yongming Hu

Proceedings Volume 11571, 1157102 (2020) https://doi.org/10.1117/12.2576285

KEYWORDS: Modulation transfer functions, Modal analysis, Remote sensing, Lenses, Structural design, Electronic components

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Proceedings Article | 11 January 2019 Paper

The study of free form optical elements corrected aberrations of optical system

Zhihai Pang, Gangyi Zou, Xuewu Fan, Zhen Ma, Qinfang Chen

Proceedings Volume 10837, 108370Y (2019) https://doi.org/10.1117/12.2504891

KEYWORDS: Optical design, Zernike polynomials, Aberration correction, Aberration theory, Wavefront aberrations

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Proceedings Article | 11 January 2019 Paper

Design of SiC mirror subsystem of a space-based astronomy telescope

Liang-jie Feng, Jiao-teng Ding, Gang-yi Zou

Proceedings Volume 10837, 108370A (2019) https://doi.org/10.1117/12.2504931

KEYWORDS: Mirrors, Silicon carbide, Distortion, Telescopes, Space telescopes, Astronomy, Optical instrument design, Astronomical telescopes, Optical fabrication, Astronomical imaging

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Proceedings Article | 11 January 2019 Paper

Performance comparison between two kinds of variable curvature mirrors: mathematical analysis, prototype design, experimental demonstration, and application potentials in realizing non-moving element optical zooming

Hui Zhao, Xiaopeng Xie, Liang Xu, Gangyi Zou, Chuang Li, Xuewu Fan

Proceedings Volume 10837, 108371C (2019) https://doi.org/10.1117/12.2504861

KEYWORDS: Mirrors, Monochromatic aberrations, Optical components, Prototyping, Optical imaging, Zoom lenses, Finite element methods, 3D modeling, Mathematics, Thermal effects

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Proceedings Article | 24 October 2016 Paper

Misalignment induced aberration off-axis optical system

Zhihai Pang, Xuewu Fan, Zhen Ma, Gangyi Zou

Proceedings Volume 9682, 96820U (2016) https://doi.org/10.1117/12.2243446

KEYWORDS: Monochromatic aberrations, Optical components, Distortion, Fluctuations and noise, Astronomical imaging, Precision optics, Precision mechanics, Aberration theory, Off axis mirrors, Mirrors

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Proceedings Article | 27 September 2016 Paper

Design and fabrication of CGH for 600mm diameter SiC primary mirror surface figure testing

Zhihai Pang, Zhen Ma, Xuewu Fan, Gangyi Zou

Proceedings Volume 9684, 96842J (2016) https://doi.org/10.1117/12.2243443

KEYWORDS: Computer generated holography, Optical fabrication, Silicon carbide, Mirrors, Aspheric lenses, Optical testing, Diffraction, Wavefronts, Interferometers, Reflection

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Proceedings Article | 26 November 2012 Paper

Prototype design of an all-reflective non-coaxial optical zooming system for space camera application without moving elements based on deformable mirror

Hui Zhao, Xuewu Fan, Gangyi Zou, Zhihai Pang, Wei Wang, Guorui Ren, Yu Su

Proceedings Volume 8557, 855713 (2012) https://doi.org/10.1117/12.981931

KEYWORDS: Cameras, Imaging systems, Mirrors, Deformable mirrors, Reflectivity, Prototyping, Micromachined deformable membrane mirrors, Optical components, Diffraction, Modulation transfer functions

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Proceedings Article | 15 October 2012 Paper

Optical design of satellite laser communication integrative transceiver

Yanyan Cheng, Xuewu Fan, Gangyi Zou, Peipei Yan, Kai Liu

Proceedings Volume 8415, 84151F (2012) https://doi.org/10.1117/12.973763

KEYWORDS: Optical design, Laser communications, Mirrors, Optical antennas, Satellites, Transmitters, Satellite communications, Receivers, Optical communications, Telecommunications

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Showing 5 of 17 publications

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