Dr. Changwei Li Profile

Dr. Changwei Li

at NIAOT

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Author

Publications (9)

Proceedings Article | 20 November 2024 Poster + Paper

Pupil segmentation beam collimation method

Zijin Deng, Changwei Li

Proceedings Volume 13241, 132411B (2024) https://doi.org/10.1117/12.3030905

KEYWORDS: Collimation, Beam divergence, Wavefront sensors, Microlens array

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SPIE Journal Paper | 29 July 2021

Direct wavefront sensing from extended objects: a general sensor

Changwei Li, Yanting Lu, Sijiong Zhang

OE, Vol. 60, Issue 07, 073107, (July 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.7.073107

KEYWORDS: Wavefront sensors, Wavefronts, Sensors, Reconstruction algorithms, Photovoltaics, Fourier transforms, Point spread functions, Lutetium, Optical engineering, Computer simulations

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SPIE Journal Paper | 20 July 2018

Moment-based wavefront reconstruction via a defocused Shack–Hartmann sensor

Fan Feng, Changwei Li, Sijiong Zhang

OE, Vol. 57, Issue 07, 074106, (July 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.7.074106

KEYWORDS: Wavefronts, Wavefront reconstruction, Microlens, Sensors, Reconstruction algorithms, Lithium, Zernike polynomials, Optical engineering, Microlens array, Computer simulations

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SPIE Press Book | 5 July 2017

Understanding Optical Systems through Theory and Case Studies

Shun Li, Sijiong Zhang, Changwei Li

KEYWORDS: Wavefronts, Sensors, Optical imaging, Mirrors, Adaptive optics, Geometrical optics, Imaging systems, Optical design, Microscopes, Confocal microscopy, Atmospheric optics, Diffraction, Optical scanning systems, Astronomical imaging

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Understanding Optical Systems through Theory and Case Studies

Proceedings Article | 21 July 2014 Paper

Theoretical analyses for the relationship between the performance of quadrant photodetector and the size of incident light spot

Zhaoying Zheng, Changwei Li, Sijiong Zhang

Proceedings Volume 9148, 914856 (2014) https://doi.org/10.1117/12.2055065

KEYWORDS: Adaptive optics, Photodetectors, Astronomical imaging, Telescopes, Optical testing, Optical tweezers, Atmospheric turbulence, Statistical analysis, Calibration, Wavefront aberrations

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Proceedings Article | 18 July 2014 Paper

Co-phasing of segmented telescopes using dual wavelength digital holography

Changwei Li, Sijiong Zhang

Proceedings Volume 9151, 915106 (2014) https://doi.org/10.1117/12.2054088

KEYWORDS: Telescopes, Digital holography, Image segmentation, Device simulation, Holograms, Point diffraction interferometers, Fourier transforms, Astronomical imaging, Phase measurement, Digital filtering

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Proceedings Article | 13 September 2012 Paper

Analysis and experimental demonstration of adaptive optics based on the modal control optimization

Bangming Li, Changwei Li, Peng Jia, Sijiong Zhang

Proceedings Volume 8447, 844733 (2012) https://doi.org/10.1117/12.924094

KEYWORDS: Adaptive optics, Control systems, Actuators, Wavefronts, Atmospheric turbulence, Distortion, Astronomy, Astronomical imaging, Adaptive control, Wavefront sensors

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Proceedings Article | 13 September 2012 Paper

Co-phasing of the segmented mirror based on the generalized phase diversity wavefront sensor

Changwei Li, Sijiong Zhang

Proceedings Volume 8450, 84500B (2012) https://doi.org/10.1117/12.923645

KEYWORDS: Segmented mirrors, Sensors, Image segmentation, Wavefronts, Wavefront sensors, Mirrors, Signal to noise ratio, Space telescopes, Photovoltaics, Optimization (mathematics)

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Proceedings Article | 31 August 2009 Paper

Sensitive measurement of optical nonlinearities of ZnSe based on a phase object

Chang Wei Li, Yu Xiao Wang, Min Shui, Xiao Jin, Jun Yi Yang, Xue Ru Zhang, Kun Yang, Ying Lin Song

Proceedings Volume 7382, 73824A (2009) https://doi.org/10.1117/12.835499

KEYWORDS: Nonlinear optics, Optical testing, CCD cameras, Imaging systems, Solids, Absorption, Transmittance, Nonlinear filtering, Fourier transforms, Refractive index

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Showing 5 of 9 publications

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