Prof. Qian Liu Profile

Prof. Qian Liu

at China Academy of Engineering Physics

SPIE Involvement:

Author

Publications (13)

Proceedings Article | 18 December 2023 Paper

Research on composite auto-focus method for on-machine interferometry measurement

Xiaojin Huang, Jianguo He, Qian Liu

Proceedings Volume 12964, 129640A (2023) https://doi.org/10.1117/12.3005998

KEYWORDS: Interferometry, Modulation, Interferograms, Image sharpness

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Proceedings Article | 18 December 2023 Paper

Fast separation method of misalignment errors for cylindrical full-surface interferometry

Hui Zhang, Fang Ji, Qian Liu

Proceedings Volume 12964, 129640P (2023) https://doi.org/10.1117/12.3008115

KEYWORDS: Optical surfaces, Interferometry, Error analysis, Simulations, Wavefront errors, Optical path differences, Wavefronts, Nulling interferometry, Reflection, Plane waves

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Proceedings Article | 12 April 2023 Paper

Defect detection of precision optics by bright-dark-field structured illumination microscopy

Lulu Li, Ke Zhang, Qian Liu

Proceedings Volume 12565, 125651I (2023) https://doi.org/10.1117/12.2662336

KEYWORDS: Microscopy, Defect detection, Modulation, Structured light, Precision optics

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SPIE Journal Paper | 21 January 2021

Microstructured surface stitching based on wavelet transform three-dimensional data matching

Lulu Li, Hui Zhang, Xiaojin Huang, Qian Liu

OE, Vol. 60, Issue 01, 014102, (January 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.1.014102

KEYWORDS: Wavelets, Wavelet transforms, 3D microstructuring, Optical engineering, 3D metrology, Feature extraction, Microscopes, Gaussian filters, Detection and tracking algorithms, Computer simulations

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Proceedings Article | 6 January 2020 Paper

Dark field microscopy for ultra-precision surface processing defect measurement

Lulu Li, Qian Liu, Wen Huang

Proceedings Volume 11383, 1138305 (2020) https://doi.org/10.1117/12.2523360

KEYWORDS: Light, Defect detection, Image segmentation, Light sources, Imaging systems, Microscopy, Image processing, Image enhancement, Image registration, Surface finishing

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Proceedings Article | 6 January 2020 Paper

Vibration-resistant interferometric measurement of optical surface figure and roughness

Qian Liu, Wen Huang, Lulu Li, Zhiliang Zhao

Proceedings Volume 11383, 1138304 (2020) https://doi.org/10.1117/12.2523358

KEYWORDS: Interferometers, Optical testing, Interferometry, Microscopes, Optics manufacturing, Wavefronts, Phase shifting

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Proceedings Article | 10 May 2019 Paper

High-contrast dark-field imaging method for detecting optical surface micro-defects

Lulu Li, Qian Liu, Xuan Zhang

Proceedings Volume 11068, 110681A (2019) https://doi.org/10.1117/12.2524438

KEYWORDS: Optics manufacturing, Defect detection, Light scattering

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SPIE Journal Paper | 8 March 2019

Robust subaperture stitching method based on three-dimensional surface data matching

Lulu Li, Qian Liu, Wen Huang

OE, Vol. 58, Issue 03, 034103, (March 2019) https://doi.org/10.1117/12.10.1117/1.OE.58.3.034103

KEYWORDS: Detection and tracking algorithms, Interferometers, Error analysis, Corner detection, Optical engineering, Lithium, 3D image processing, Interferometry, Image registration, Optical components

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Proceedings Article | 8 March 2017 Paper

Research on the magnetorheological finishing of large aperture off-axis aspheric optical surfaces for zinc sulfide

Yunfei Zhang, Wen Huang, Yongcheng Zheng, Fang Ji, Min Xu, Zhixin Duan, Qing Luo, Qian Liu, Hong Xiao

Proceedings Volume 10255, 102550R (2017) https://doi.org/10.1117/12.2267813

KEYWORDS: Magnetorheological finishing, Aspheric lenses, Zinc, Surface finishing, Polishing, Single point diamond turning, Microfluidics, Infrared radiation, Optimization (mathematics), Infrared imaging

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Proceedings Article | 22 June 2015 Paper

Spatial-frequency analysis algorithm for in-situ measurement of wavefront

Qian Liu, Yang Wang, Fang Ji, Jianguo He

Proceedings Volume 9525, 95250B (2015) https://doi.org/10.1117/12.2184769

KEYWORDS: Phase shifts, Wavefronts, Mirrors, Error analysis, Phase shifting, Photovoltaics, Detection and tracking algorithms, Metrology, Environmental sensing, Phase interferometry

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Proceedings Article | 15 October 2012 Paper

Confocal microscope method for curvature radius measurement of small lens

Qian Liu, Weichuan Yang, Pengyue Wu, Daocheng Yuan

Proceedings Volume 8417, 841706 (2012) https://doi.org/10.1117/12.966325

KEYWORDS: Spherical lenses, Confocal microscopy, Microscopes, Sensors, Eye, Objectives, Mirrors, Optical components, Light sources, Optical design

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Proceedings Article | 27 May 2011 Paper

Dynamic concentricity measurement of large interval-diameter ratio holes with virtual annular quadrant method

Qian Liu, Weichuan Yang, Bing Yao, Jiadong Jang, Jun Hu

Proceedings Volume 8082, 80823B (2011) https://doi.org/10.1117/12.888989

KEYWORDS: Cameras, Edge detection, Sensors, Optics manufacturing, Image processing, Mirrors, Charge-coupled devices, Laser development, Optical filters, Metals

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Proceedings Article | 12 November 2010 Paper

Design of 3D vision probe based on auto-focus

Qian Liu, Daocheng Yuan, Bo Liu

Proceedings Volume 7855, 78551G (2010) https://doi.org/10.1117/12.868519

KEYWORDS: Atrial fibrillation, Microscopes, Machine vision, Fermium, Frequency modulation, 3D vision, Metrology, Modulation transfer functions, 3D metrology, Image filtering

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Showing 5 of 13 publications

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