Mr. Xinhua Chen Profile

Xinhua Chen

at Soochow Univ

SPIE Involvement:

Author

Publications (52)

Proceedings Article | 6 November 2023 Paper

Optical element surface measurement technology based on optical coherence tomography

Anxin Wang, Linling Song, Xinhua Chen

Proceedings Volume 12921, 129213H (2023) https://doi.org/10.1117/12.2691572

KEYWORDS: Optical components, Inspection, Optical surfaces, Optical coherence tomography

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Proceedings Article | 6 November 2023 Paper

Study on the reduction of measurement uncertainty of line laser triangulation instrument based on optical method

Zhecheng Zhao, Lingling Song, Xinhua Chen

Proceedings Volume 12921, 1292144 (2023) https://doi.org/10.1117/12.2691745

KEYWORDS: Equipment, Speckle, Measurement uncertainty, Tunable lasers

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Proceedings Article | 4 April 2023 Paper

Design and analysis of optic system for satellite-borne miniature high-resolution greenhouse gas monitoring instrument

Lingjun Gu, Qiao Pan, Xinhua Chen, Weimin Shen

Proceedings Volume 12617, 126177S (2023) https://doi.org/10.1117/12.2666883

KEYWORDS: Signal to noise ratio, Satellites, Spectral resolution, Fabry–Perot interferometers, Carbon monoxide, Spectroscopy, Imaging systems, Design and modelling, Spatial resolution

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Proceedings Article | 4 April 2023 Paper

Simulation study on the precision of passive methane concentration detection using gas filter correlation

Feitong Qiu, Xinhua Chen, Weimin Shen

Proceedings Volume 12617, 126177K (2023) https://doi.org/10.1117/12.2666856

KEYWORDS: Methane, Absorption, Gas cells, Infrared radiation, Light sources, Calibration

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The development of energy production and transportation industry is seriously threatened by the methane for its flammability and explosiveness. How to monitor the methane leaks in real time is an important and difficult problem. The gas filter correlation technology has strong selectivity and fast response, so it can accurately detect the presence and concentration of methane. According to whether an artificial lighting source is used, the gas filter correlation technology can be classified as active or passive types. Passive light source like the sun has the advantages of low cost, wide coverage and being harmless to operators. The detection precision can be improved by increasing the working band to gather more radiation energy on the basis of maximizing the ratio between the total absorption of the methane and the total optical transmission of the system. In this paper, the precision of using passive gas filter correlation technology to detect methane concentration is simulated and analyzed. The working band of the detection system is chosen to be 7μm - 8μm by considering factors such as atmospheric transmission and radiation interference, and it covers the characteristic absorption peak of methane at 7.658μm. The radiation intensity of saturated absorption reference channel and non-absorbing measurement channel detected by the system under normal temperature is analyzed and compared. Based on the Lambert Beer law, the numerical relationship between methane concentration and radiation intensity was determined by multi-point fitting of simulation data, and the linear correlation reaches 0.9998. The simulation results show that the theoretical minimum gas detection limit is 0.465PPM, and the relative error at 12PPM is 10%. With the increase of gas concentration, the error decreases rapidly, and it is 3% at 35PPM. Even if the water vapor with absorption interference in the working band is added, the relative error at 35PPM is only 4%, indicating that it is insensitive to interference. It shows great potential in gas quantitative detection in the future.

Proceedings Article | 21 March 2023 Paper

Optical design of dual-axis line scanning chromatic confocal measurement system using linear variable filter

Shiyu Ge, Xinhua Chen, Jiachen Zhu, Weimin Shen

Proceedings Volume 12595, 125950M (2023) https://doi.org/10.1117/12.2667070

KEYWORDS: Confocal microscopy, Optical filters, Image filtering, Design and modelling, Linear filtering

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Proceedings Article | 27 March 2022 Paper

Single-use video endoscope for vertebral pedicle puncture

Jian Zhou, ZhiCheng Zhao, XinHua Chen, WeiMin Shen

Proceedings Volume 12169, 121697I (2022) https://doi.org/10.1117/12.2625032

KEYWORDS: Endoscopes, Video, Modulation transfer functions, Bone, Optical design, Surgery, Integrated optics, Image resolution, Spine, Sensors

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Proceedings Article | 27 March 2022 Paper

Optical design of geostationary wide swath imaging spectrometer with freeform surfaces

Huiquan Wang, Jiacheng Zhu, Xinhua Chen, Weimin Shen

Proceedings Volume 12169, 121694C (2022) https://doi.org/10.1117/12.2624069

KEYWORDS: Spectroscopy, Optical design, Imaging systems, Mirrors, Tolerancing, Satellites, Spatial resolution, Remote sensing

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Proceedings Article | 15 February 2022 Paper

Internal stray radiation analysis of uncooled thermal infrared imaging spectrometer

Xinlong Xie, Xinhua Chen, Jiacheng Zhu, Weimin Shen

Proceedings Volume 12166, 121666M (2022) https://doi.org/10.1117/12.2617869

KEYWORDS: Spectroscopy, Infrared imaging, Infrared spectroscopy, Infrared radiation

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Proceedings Article | 5 January 2022 Paper

Design of wide-band spectral domain coherent tomography

Qiuyang Shen, Jian Bao, Weimin Shen, Xinhua Chen

Proceedings Volume 12067, 120670K (2022) https://doi.org/10.1117/12.2602112

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Proceedings Article | 2 December 2020 Paper

Fast alignment of the Offner imaging spectrometer with spherical autostigmatic method

Tuo-tuo Yang, Xin-hua Chen, Zhi-cheng Zhao, Jia-cheng Zhu, Wei-min Shen

Proceedings Volume 11717, 1171702 (2020) https://doi.org/10.1117/12.2574399

KEYWORDS: Mirrors, Spectroscopy, Spherical lenses, Sensors, Objectives, Imaging systems, Tolerancing, Charge-coupled devices, Microscopes, CCD image sensors

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Proceedings Article | 5 November 2020 Paper

Optical design of a broadband Offner imaging spectrometer for the asteroid exploration

Fuzhen Yang, Xinhua Chen, Zhicheng Zhao, Quan Liu, Weimin Shen

Proceedings Volume 11567, 1156703 (2020) https://doi.org/10.1117/12.2572687

KEYWORDS: Spectroscopy, Asteroids, Diffraction gratings, Short wave infrared radiation, Diffraction, Optical design, Minerals, Imaging systems, Modulation transfer functions, Infrared spectroscopy

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SPIE Journal Paper | 26 February 2019

Design and measurement of convex grating in conical diffraction Offner spectrometer

Qiao Pan, Xinhua Chen, Jiankang Zhou, Zhicheng Zhao, Weimin Shen

OE, Vol. 58, Issue 02, 025109, (February 2019) https://doi.org/10.1117/12.10.1117/1.OE.58.2.025109

KEYWORDS: Diffraction gratings, Diffraction, Optical design, Spectroscopy, Finite element methods, Silver, Distortion, Imaging systems, Optical engineering, Sensors

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Proceedings Article | 5 November 2018 Paper

Continuous zoom laser beam shaper with microlens arrays

Shuang Wu, Xujie Huang, Jiacheng Zhu, Xinhua Chen, Zhicheng Zhao, Weimin Shen

Proceedings Volume 10815, 108151O (2018) https://doi.org/10.1117/12.2503865

KEYWORDS: Zoom lenses, Microlens array, Laser applications

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Proceedings Article | 9 August 2018 Paper

Efficient computation of the Strehl ratio for the wavefront coding system with the rotationally symmetric phase mask

Xinhua Chen, Xiaofeng Wang, Weimin Shen

Proceedings Volume 10806, 108066J (2018) https://doi.org/10.1117/12.2503086

KEYWORDS: Wavefronts, Optimization (mathematics), Zernike polynomials, Diffraction, Point spread functions, Spatial light modulators

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Proceedings Article | 9 August 2018 Paper

Target discrimination via hyper-spectral imaging and spectral generalized angle analysis

Yuheng Chen, Jiankang Zhou, Xinhua Chen, Yiqun Ji, Weimin Shen

Proceedings Volume 10806, 108063K (2018) https://doi.org/10.1117/12.2502957

KEYWORDS: Target detection, Imaging spectroscopy, Hyperspectral systems, Remote sensing, Hyperspectral imaging, Hyperspectral target detection, Data acquisition, Visualization, Detection and tracking algorithms

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Proceedings Article | 24 July 2018 Paper

Study and analysis on anomaly detection methods for hyperspectral imagery

Yuheng Chen, Jiankang Zhou, Xinhua Chen, Yiqun Ji, Weimin Shen

Proceedings Volume 10827, 108271H (2018) https://doi.org/10.1117/12.2500690

KEYWORDS: Hyperspectral imaging, Camouflage, Target detection, Imaging spectroscopy, Remote sensing, Visualization, Data acquisition, Hyperspectral target detection

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Proceedings Article | 24 July 2018 Paper

Analysis and measurement of the stray light of the visible and near-infrared imaging spectrometer

Chao Luo, Xinhua Chen, Zhicheng Zhao, Qiao Pan, Minxue Tang, Weimin Shen

Proceedings Volume 10827, 1082730 (2018) https://doi.org/10.1117/12.2501130

KEYWORDS: Spectroscopy, Stray light, Light sources, Visible radiation, Infrared spectroscopy, Measurement devices, Near infrared, Optical testing, Imaging systems, Linear filtering

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Proceedings Article | 24 July 2018 Paper

Effect of distortions on spectral signal acquisition of the grating imaging spectrometer

Xiaofeng Wang, Xinhua Chen, Zhicheng Zhao, Qiao Pan, Chao Luo, Weimin Shen, Minxue Tang

Proceedings Volume 10827, 108272Z (2018) https://doi.org/10.1117/12.2501128

KEYWORDS: Spectroscopy, Spectral resolution, Reflectivity, Sensors, Point spread functions, Image quality, Visible radiation, Imaging systems, Image processing, Data acquisition

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Proceedings Article | 1 August 2017 Paper

Measurement system for diffraction efficiency of convex gratings

Peng Liu, Xin-hua Chen, Jian-kang Zhou, Zhi-cheng Zhao, Quan Liu, Chao Luo, Xiao-feng Wang, Min-xue Tang, Wei-min Shen

Proceedings Volume 10339, 103391H (2017) https://doi.org/10.1117/12.2268126

KEYWORDS: Diffraction gratings

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Proceedings Article | 5 January 2017 Paper

Camouflage target detection via hyperspectral imaging plus information divergence measurement

Yuheng Chen, Xinhua Chen, Jiankang Zhou, Yiqun Ji, Weimin Shen

Proceedings Volume 10244, 102440F (2017) https://doi.org/10.1117/12.2257938

KEYWORDS: Target detection, Camouflage, Hyperspectral systems, Imaging spectroscopy

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Proceedings Article | 25 October 2016 Paper

Quality assessment for spectral imaging

Yuheng Chen, Xinhua Chen, Jiankang Zhou, Yiqun Ji, Weimin Shen

Proceedings Volume 9686, 96860F (2016) https://doi.org/10.1117/12.2240101

KEYWORDS: Image quality, Imaging spectroscopy, Imaging systems, Signal to noise ratio, Hyperspectral imaging, Modulation transfer functions, Remote sensing, Biomedical optics, Spectral resolution, Image resolution

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Proceedings Article | 25 October 2016 Paper

Optical design of a scalable imaging system with compact configuration and high fidelity

Yiqun Ji, Yuheng Chen, Jiankang Zhou, Xinhua Chen

Proceedings Volume 9685, 96850U (2016) https://doi.org/10.1117/12.2244301

KEYWORDS: Optical design, Imaging systems, Image resolution, Lens design, Spherical lenses, Modulation transfer functions, Optical imaging, Diffraction, Spatial resolution, Image sensors

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Proceedings Article | 19 October 2016 Paper

Design of wavefront coding optical system with annular aperture

Xinhua Chen, Jiankang Zhou, Weimin Shen

Proceedings Volume 10155, 101551A (2016) https://doi.org/10.1117/12.2246131

KEYWORDS: Wavefronts, Point spread functions

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Proceedings Article | 27 September 2016 Paper

The design and implementation of the full-Stokes imaging spectropolarimeter

Jiankang Zhou, Yiqun Ji, Xinhua Chen, Yuheng Chen, Suodong Ma, Weimin Shen

Proceedings Volume 9684, 96843P (2016) https://doi.org/10.1117/12.2242944

KEYWORDS: Hyperspectral imaging, Imaging systems, Polarization, Modulation, Wave plates, Spectroscopy, Polarizers, Birefringence, Polarimetry, Diffraction gratings

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Proceedings Article | 18 November 2014 Paper

Quality assessment for hyperspectral imaging

Yuheng Chen, Xinhua Chen, Jiankang Zhou, Weimin Shen

Proceedings Volume 9298, 929803 (2014) https://doi.org/10.1117/12.2070664

KEYWORDS: Imaging systems, Signal to noise ratio, Hyperspectral imaging, Image quality, Modulation transfer functions, Imaging spectroscopy, Image analysis, Statistical analysis, Signal processing, Airborne remote sensing

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Proceedings Article | 5 November 2014 Paper

Correcting the wavefront aberration of membrane mirror based on liquid crystal spatial light modulator

Bin Yang, Yin Wei, Xinhua Chen, Minxue Tang

Proceedings Volume 9272, 927218 (2014) https://doi.org/10.1117/12.2071315

KEYWORDS: Mirrors, Wavefront aberrations, Wavefronts, Liquid crystals, Phase modulation, Sensors, Glasses, Error analysis, Interferometers, Adaptive optics

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Proceedings Article | 18 September 2014 Paper

Hybrid phase retrieval method for annular pupil

Xinhua Chen, Weimin Shen

Proceedings Volume 9282, 92822F (2014) https://doi.org/10.1117/12.2069399

KEYWORDS: Phase retrieval, Point spread functions, Image retrieval, Fourier transforms, Numerical simulations, Optics manufacturing, Large telescopes, Image analysis, Zernike polynomials, Objectives

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Proceedings Article | 18 September 2014 Paper

Laboratory radiometric calibration for the convex grating imaging spectrometer

Jiankang Zhou, Xinhua Chen, Yuheng Chen, Yiqun Ji, Weimin Shen

Proceedings Volume 9282, 92822G (2014) https://doi.org/10.1117/12.2069732

KEYWORDS: Calibration, Spectroscopy, Polarization, Integrating spheres, Imaging systems, Sensors, Spectral calibration, System integration, Digital imaging, Radio optics

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Proceedings Article | 31 December 2013 Paper

Design and manufacture of an athermalication high-speed lens with low veiling glare

Rongbao Shi, Yiqun Ji, Zhicheng Zhao, Xinhua Chen, Wenbao Song, Weimin Shen

Proceedings Volume 9042, 904219 (2013) https://doi.org/10.1117/12.2037466

KEYWORDS: Modulation transfer functions, Stray light, Temperature metrology, Geometrical optics, Sensors, Image quality, Lens design, Monochromatic aberrations, Design for manufacturability, Imaging systems

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Proceedings Article | 19 December 2013 Paper

Spectral calibration for convex grating imaging spectrometer

Jiankang Zhou, Xinhua Chen, Yiqun Ji, Yuheng Chen, Weimin Shen

Proceedings Volume 9045, 90451U (2013) https://doi.org/10.1117/12.2038150

KEYWORDS: Spectroscopy, Spectral calibration, Calibration, Lamps, Monochromators, Spectral resolution, Sensors, Mirrors, Imaging spectroscopy, Imaging systems

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Proceedings Article | 19 December 2013 Paper

Spot image based multi-field wavefront retrieval

Xinhua Chen, Weimin Shen

Proceedings Volume 9046, 90461C (2013) https://doi.org/10.1117/12.2038043

KEYWORDS: Wavefronts, Image retrieval, Signal to noise ratio, Zernike polynomials, Wavefront sensors, Numerical simulations, Objectives, Optics manufacturing, Optical alignment, Interferometry

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Proceedings Article | 19 December 2013 Paper

Research on the principle and experimentation of optical compressive spectral imaging

Yuheng Chen, Xinhua Chen, Jiankang Zhou, Yiqun Ji, Weimin Shen

Proceedings Volume 9045, 904522 (2013) https://doi.org/10.1117/12.2043147

KEYWORDS: Modulation, Imaging spectroscopy, Imaging systems, Sensors, Image compression, Data acquisition, Reconstruction algorithms, Spectral resolution, Optics manufacturing, Compressed sensing

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Proceedings Article | 19 December 2013 Paper

Measuring the shape of membrane mirror based on Shack-Hartmann wavefront sensor

Ying Huang, Bin Yang, Minxue Tang, Xinhua Chen

Proceedings Volume 9046, 90460L (2013) https://doi.org/10.1117/12.2034480

KEYWORDS: Mirrors, Wavefronts, Wavefront sensors, Reconstruction algorithms, Wavefront reconstruction, Glasses, Microlens, Calibration, Optical components, Zernike polynomials

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Proceedings Article | 4 March 2013 Paper

Research on spatial coding compressive spectral imaging and its applicability for rural survey

Yuheng Chen, Yiqun Ji, Jiankang Zhou, Xinhua Chen, Weimin Shen

Proceedings Volume 8761, 876105 (2013) https://doi.org/10.1117/12.2019610

KEYWORDS: Imaging spectroscopy, Image compression, Data modeling, Reconstruction algorithms, Modulation, Data acquisition, Spectral data processing, Imaging systems, Image restoration, Compressed sensing

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Proceedings Article | 30 November 2012 Paper

Wavelength calibration of imaging spectrometer using atmospheric absorption features

Jiankang Zhou, Yuheng Chen, Xinhua Chen, Yiqun Ji, Weimin Shen

Proceedings Volume 8558, 85582C (2012) https://doi.org/10.1117/12.1000068

KEYWORDS: Spectroscopy, Calibration, Absorption, Atmospheric modeling, Spectral calibration, Atmospheric monitoring, Sensors, Remote sensing, Image processing, Oxygen

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Proceedings Article | 26 November 2012 Paper

Aberration retrieval for annular pupils using parametric model of point spread function

Xinhua Chen, Weimin Shen

Proceedings Volume 8557, 85572D (2012) https://doi.org/10.1117/12.981977

KEYWORDS: Point spread functions, Fourier transforms, Numerical simulations, Image retrieval, Wavefront sensors, Optics manufacturing, Systems modeling, Wavefronts, Zernike polynomials, Objectives

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Proceedings Article | 21 November 2012 Paper

Research on system modeling and data reconstruction for spatial coding compressive spectral imaging

Yuheng Chen, Xinhua Chen, Yiqun Ji, Jiankang Zhou, Weimin Shen

Proceedings Volume 8558, 855819 (2012) https://doi.org/10.1117/12.981385

KEYWORDS: Imaging spectroscopy, Data modeling, Modulation, Reconstruction algorithms, Imaging systems, Spectral data processing, Systems modeling, Data acquisition, Image compression, Compressed sensing

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Proceedings Article | 30 November 2011 Paper

Spot image based aberration retrieval method using parametric model of point spread function

Xinhua Chen, Weimin Shen

Proceedings Volume 8201, 82011D (2011) https://doi.org/10.1117/12.904788

KEYWORDS: Image retrieval, Point spread functions, Zernike polynomials, Diffraction, Fourier transforms, Monochromatic aberrations, Wavefront sensors, Numerical simulations, Wavefronts, Image restoration

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Proceedings Article | 10 November 2010 Paper

Signal processing and correction implementation for modulation transfer function test bench

Yuheng Chen, Xinhua Chen, Chunchang Xiang, Weimin Shen

Proceedings Volume 7850, 78501P (2010) https://doi.org/10.1117/12.870058

KEYWORDS: Modulation transfer functions, Signal processing, Data processing, Signal attenuation, Image analysis, Optical testing, Sensors, CCD cameras, Mirrors, Fourier transforms

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Proceedings Article | 9 November 2010 Paper

Hyperspectral image data compression based on DSP

Jiming Fan, Jiankang Zhou, Xinhua Chen, Weimin Shen

Proceedings Volume 7850, 78500H (2010) https://doi.org/10.1117/12.870307

KEYWORDS: Digital signal processing, Image compression, Hyperspectral imaging, Signal processing, Image processing, Wavelets, Clocks, Wavelet transforms, Discrete wavelet transforms, Computer programming

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Proceedings Article | 9 November 2010 Paper

Development of a real time MTF test bench for visible optical systems

Xinhua Chen, Yuheng Chen, Jiming Fan, Chunchang Xiang, Weimin Shen

Proceedings Volume 7849, 784926 (2010) https://doi.org/10.1117/12.870157

KEYWORDS: Modulation transfer functions, Image analysis, CCD cameras, Optical testing, Transmittance, Point spread functions, Mirrors, Sensors, Microscopy, Objectives

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Proceedings Article | 6 November 2010 Paper

MTF measurement and imaging quality evaluation of digital camera with slanted-edge method

Chunchang Xiang, Xinhua Chen, Yuheng Chen, Jiankang Zhou, Weimin Shen

Proceedings Volume 7849, 78490A (2010) https://doi.org/10.1117/12.869937

KEYWORDS: Modulation transfer functions, Digital cameras, CCD cameras, Imaging systems, Contrast transfer function, Spatial frequencies, Cameras, Image registration, Charge-coupled devices, Modulation

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Proceedings Article | 1 December 2009 Paper

CCD based digital optical transfer function testing instrument

Xinhua Chen, Yuheng Chen, Liangjun Zhang, Weimin Shen

Proceedings Volume 7506, 75062J (2009) https://doi.org/10.1117/12.837889

KEYWORDS: Optical transfer functions, Image analysis, Optical testing, Charge-coupled devices, Calibration, CCD image sensors, CCD cameras, Collimators, Point spread functions, Control systems

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