Prof. Xiaotong Li Profile

Prof. Xiaotong Li

at Zhejiang Univ

SPIE Involvement:

Author

Publications (52)

Proceedings Article | 28 November 2023 Poster + Paper

3D memory-reduced form of the one-step leapfrog ADI-FDTD method based on the electromagnetic divergence relationship

Hongli Yu, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 12773, 1277310 (2023) https://doi.org/10.1117/12.2682673

KEYWORDS: Finite-difference time-domain method, Electromagnetism, Simulations, Electric fields

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Proceedings Article | 28 November 2023 Poster + Paper

Optical system design for zoom lens based on Delano diagram

Liang Sun, Jifeng Sun, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 12765, 1276510 (2023) https://doi.org/10.1117/12.2682728

KEYWORDS: Zoom lenses, Design and modelling, Optical components, Mathematical optimization, Image quality, Lens design, Optical design, Lenses, Geometrical optics

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Proceedings Article | 28 November 2023 Poster + Paper

Reducing system tolerance sensitivity by controlling the stability of the chief ray

Zhenxing Zhou, Xiaotong Li, Yimou Luo

Proceedings Volume 12765, 127651A (2023) https://doi.org/10.1117/12.2686466

KEYWORDS: Tolerancing, Optical surfaces, Ray tracing, Spherical lenses, Image quality standards, Geometrical optics

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Proceedings Article | 9 October 2021 Poster + Paper

Automatic design of machine vision lens based on improved genetic algorithm and damped least squares

Jifeng Sun, Xiaotong Li

Proceedings Volume 11895, 118950X (2021) https://doi.org/10.1117/12.2600897

KEYWORDS: Optimization (mathematics), Optical design, Particles, Particle swarm optimization, Machine vision, Genetic algorithms, Distortion, Evolutionary algorithms, Computer programming, Monochromatic aberrations

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Proceedings Article | 9 October 2021 Poster + Paper

A new approach for tolerance sensitivity reduction in lens optimization by controlling the first order derivatives of real ray height on pupil

Yimou Luo, Xiaotong Li, Qi Huang

Proceedings Volume 11895, 1189510 (2021) https://doi.org/10.1117/12.2601274

KEYWORDS: Tolerancing, Lens design, Modulation transfer functions, Optics manufacturing, Monte Carlo methods, Image quality, Assembly tolerances, Optical design, Image quality standards, Diffraction

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Proceedings Article | 9 October 2021 Presentation + Paper

Research on the design of Kepler refractive shaping system with the long working focal depth

Yihan Wang, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 11895, 118950M (2021) https://doi.org/10.1117/12.2600849

KEYWORDS: Beam shaping, Aspheric lenses, Ray tracing, Beam propagation method, Zemax, Optical simulations, Optical design, Laser sources, Laser beam propagation, High power lasers

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Proceedings Article | 10 October 2020 Poster + Presentation + Paper

Automated design of machine vision lens based on the combination of particle swarm optimization and damped least squares

Jiajun Zhang, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 11548, 1154816 (2020) https://doi.org/10.1117/12.2573301

KEYWORDS: Particle swarm optimization, Machine vision, Optical design, Optimization (mathematics), Lens design

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Proceedings Article | 2 July 2019 Open Access

Project-based optical design practice course and teamwork: from a programmer to a lens designer

Xiaotong Li, Weige Lv, Zhaofeng Cen, Lingying Jiang, Dong Liu, Jianfeng Xu

Proceedings Volume 11143, 111432A (2019) https://doi.org/10.1117/12.2523779

KEYWORDS: Optics education, Optical design, Lens design, Software development, Ray tracing, Geometrical optics, Optical engineering, Photographic lenses, Computer programming

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Proceedings Article | 2 July 2019 Open Access

Optics education for multidisciplinary students: how to focus on the relationship between optical technology and human civilization in group discussion

Xiaotong Li, Qing Yang, Ke Si, Kaiwei Wang

Proceedings Volume 11143, 1114324 (2019) https://doi.org/10.1117/12.2523858

KEYWORDS: Optics education, Interdisciplinary fields, Scientific research, Engineering education, Education and training

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Proceedings Article | 5 November 2018 Paper

Correction algorithms of pupil aberration for Fourier ptychographic microscopy

Minli Chen, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 10816, 108161G (2018) https://doi.org/10.1117/12.2501104

KEYWORDS: Reconstruction algorithms, Algorithm development, Image quality, Image restoration, Microscopy, Computer simulations, Objectives, LED lighting, Zernike polynomials

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Proceedings Article | 5 November 2018 Paper

Diffraction method for inspecting the defects of lenses with various curvature

Zhangmin Chen, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 10815, 108150P (2018) https://doi.org/10.1117/12.2501096

KEYWORDS: Diffraction, Inspection, Lenses, Defect inspection, Defect detection

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Proceedings Article | 5 June 2018 Paper

Stray light simulation and control in imaging systems including diffraction elements

Xiaotong Li, Zhaofeng Cen

Proceedings Volume 10690, 1069009 (2018) https://doi.org/10.1117/12.2312444

KEYWORDS: Stray light, Diffraction, Imaging systems, Ray tracing, Stray light control, Optical components, Reflection, Optical design

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Proceedings Article | 12 January 2018 Paper

A light field depth estimation algorithm by edge disparity extraction

Zhuang Ma, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 10620, 106200L (2018) https://doi.org/10.1117/12.2284107

KEYWORDS: Machine vision, OpenGL, Ray tracing

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Proceedings Article | 10 January 2018 Paper

Simulation of aspheric tolerance with polynomial fitting

Jing Li, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 10616, 106160U (2018) https://doi.org/10.1117/12.2288316

KEYWORDS: Tolerancing, Aspheric lenses, Modulation transfer functions, Zernike polynomials, Shape analysis, Error analysis, Image quality, Zemax, Optical design

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Proceedings Article | 10 January 2018 Paper

Athermal design and analysis of glass-plastic hybrid lens

Jian Yang, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 10616, 106160H (2018) https://doi.org/10.1117/12.2287680

KEYWORDS: Glasses, Aspheric lenses, Lens design, Plastic lenses

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Proceedings Article | 10 January 2018 Paper

Improving imaging quality using structured light projection

Zhengjun Wu, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 10616, 1061608 (2018) https://doi.org/10.1117/12.2293997

KEYWORDS: Imaging systems, Matrices, Point spread functions, Image processing, Structured light, Diffraction, Image resolution, Image quality, Image enhancement, Optical resolution

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Proceedings Article | 24 October 2017 Paper

Two distortion correcting methods for fisheye images

Zhi Wang, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 10462, 104621I (2017) https://doi.org/10.1117/12.2283532

KEYWORDS: Distortion

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Proceedings Article | 24 October 2017 Paper

A terahertz image super-resolution reconstruction algorithm based on the deep convolutional neural network

Zeng Li, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 10462, 104621E (2017) https://doi.org/10.1117/12.2283469

KEYWORDS: Super resolution, Neural networks, Reconstruction algorithms, Millimeter wave imaging

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Proceedings Article | 16 August 2017 Open Access

Chinese National Optical Education Small Private Online Course system

XiaoJie Zhang, YuanFang Lin, Xu Liu, XiangDong Liu, ZhaoFeng Cen, XiaoTong Li, XiaoDong Zheng, XiaoPing Wang

Proceedings Volume 10452, 104520M (2017) https://doi.org/10.1117/12.2269293

KEYWORDS: Photonics, Internet, Optical engineering

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Proceedings Article | 16 August 2017 Open Access

Discussion and group work design in O2O teaching of applied optics: questions, strategies and extending

Xiaotong Li, Zhaofeng Cen, Xiangdong Liu, Zhenrong Zheng

Proceedings Volume 10452, 104520Q (2017) https://doi.org/10.1117/12.2265953

KEYWORDS: Geometrical optics, Imaging systems, Optics education, Optical design

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Proceedings Article | 16 August 2017 Open Access

Light-based science and technologies and human civilization: an optical course for general education

Xiaotong Li, Kaiwei Wang, Qing Yang, Ke Si

Proceedings Volume 10452, 104521K (2017) https://doi.org/10.1117/12.2266843

KEYWORDS: Optical engineering, Optics education, Education and training, Engineering education, Light

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Proceedings Article | 16 August 2017 Open Access

Assessment by psychophysical methods for design courses of optical discipline

Weige Lv, Xiaodong Zheng, Xiaotong Li, Lingying Jiang, Zhaofeng Cen

Proceedings Volume 10452, 104525G (2017) https://doi.org/10.1117/12.2269749

KEYWORDS: Optical design, Psychophysics, Factor analysis

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Proceedings Article | 16 May 2017 Presentation + Paper

Numerical simulation and comparison of nonlinear self-focusing based on iteration and ray tracing

Xiaotong Li, Hao Chen, Weiwei Wang, Wangchao Ruan, Luwei Zhang, Zhaofeng Cen

Proceedings Volume 10228, 102280V (2017) https://doi.org/10.1117/12.2265790

KEYWORDS: Diffraction, Wigner distribution functions, Ray tracing, Numerical simulations, Refractive index, Computer simulations, Nonlinear optics, Beam propagation method, Complex systems, Laser beam propagation, Optical simulations

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Proceedings Article | 19 October 2016 Paper

Analysis method of beam pointing stability based on optical transmission matrix

Chuanchuan Wang, PingXian Huang, Xiaotong Li, Zhaofen Cen

Proceedings Volume 10154, 101541B (2016) https://doi.org/10.1117/12.2246779

KEYWORDS: Beam analyzers, Transmittance, Optical matrix switches, Tolerancing, Optical simulations

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Proceedings Article | 19 October 2016 Paper

Computation of beam propagation in turbulent field

Yao Yang, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 10154, 101541M (2016) https://doi.org/10.1117/12.2246998

KEYWORDS: Atmospheric propagation, Beam splitters, Beam propagation method, Turbulence

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Proceedings Article | 19 October 2016 Paper

The design of wavefront coded imaging system

Shun Lan, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 10154, 1015412 (2016) https://doi.org/10.1117/12.2246655

KEYWORDS: Wavefronts, Imaging systems, Focus stacking

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Proceedings Article | 27 September 2016 Open Access

Online to offline teaching model in optics education: resource sharing course and flipped class

Xiaotong Li, Zhaofeng Cen, Xiangdong Liu, Zhenrong Zheng

Proceedings Volume 9946, 99460R (2016) https://doi.org/10.1117/12.2237823

KEYWORDS: Optics education, Solid modeling, Video, Ray tracing, Optical engineering, Imaging systems, Engineering education, Geometrical optics, Photonics, Ocean optics

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Proceedings Article | 18 November 2014 Paper

Analysis of nonlinear self-focusing phenomenon in high-power laser system based on ray-tracing

Weiwei Wang, Xiaotong Li, Zhaofeng Cen, Luwei Zhang

Proceedings Volume 9266, 92660A (2014) https://doi.org/10.1117/12.2071845

KEYWORDS: Nonlinear optics, High power lasers, Complex systems, Geometrical optics, Laser systems engineering, Refractive index, Diffraction, Crystals, Nonlinear crystals, Laser crystals

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Proceedings Article | 13 November 2014 Paper

Verification and analysis of stray light in high-power laser system

PingXian Huang, Zhaofeng Cen, Xiaotong Li, Yuan Jin

Proceedings Volume 9276, 92761L (2014) https://doi.org/10.1117/12.2071296

KEYWORDS: Stray light, High power lasers, Laser systems engineering, Optical simulations, Collimators, Error analysis, Reflection, Imaging systems, Reliability, Analytical research

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Proceedings Article | 5 November 2014 Paper

Feedback modification strategy for designing a free-form optical surface with given illumination pattern

Yuhao Chen, Zhaofeng Cen, Xiaotong Li, Yun Dong

Proceedings Volume 9272, 927207 (2014) https://doi.org/10.1117/12.2071400

KEYWORDS: Light emitting diodes, Optical design, Lens design, Optimization (mathematics), Light sources, Optical instrument design, Detection and tracking algorithms, LED lighting, Light, Reliability

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Proceedings Article | 31 December 2013 Paper

Simulation of imaging and refocusing for light field photography

Han Huang, Xiaotong Li, Zhaofeng Cen

Proceedings Volume 9042, 90420I (2013) https://doi.org/10.1117/12.2037128

KEYWORDS: Sensors, Photography, Microlens array, Cameras, Microlens, Image processing, Photographic lenses, Image sensors, Ray tracing, Device simulation

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Proceedings Article | 31 December 2013 Paper

A novel optimization strategy for LED street lamp designing

Yun Dong, Zhaofeng Cen, Xiaotong Li, Wubin Pang, Wangchao Ruan

Proceedings Volume 9042, 904214 (2013) https://doi.org/10.1117/12.2037124

KEYWORDS: Light emitting diodes, Lamps, Light sources, LED lighting, Lens design, Optimization (mathematics), Roads, LED backlight, Light sources and illumination, Optical components

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Proceedings Article | 26 November 2012 Paper

Optical system design for a short-wave infrared imaging spectrometer

Han Huang, Xiaotong Li, Zhaofeng Cen

Proceedings Volume 8557, 85570R (2012) https://doi.org/10.1117/12.999613

KEYWORDS: Spectroscopy, Imaging systems, Telescopes, Space telescopes, Mirrors, Optical design, Infrared spectroscopy, Image quality, Infrared imaging, Short wave infrared radiation

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Proceedings Article | 26 November 2012 Paper

Description and implementation studies on field dependent wavefront aberration

Luwei Zhang, Xiaotong Li, Zhaofeng Cen

Proceedings Volume 8557, 85570N (2012) https://doi.org/10.1117/12.999684

KEYWORDS: Wavefront aberrations, Wavefronts, Lithography, Error analysis, Zernike polynomials, Fringe analysis, MATLAB, Imaging systems, Refractor telescopes, Zemax

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Proceedings Article | 26 November 2012 Paper

Realization method of full-field point spread function

Hongmei Luo, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 8557, 85570L (2012) https://doi.org/10.1117/12.999615

KEYWORDS: Point spread functions, Diffraction, Zemax, Error analysis, Modulation transfer functions, Statistical analysis, Optical lithography, Matrices, Image quality, Computer simulations

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Proceedings Article | 9 November 2010 Paper

Region labeling algorithm based on boundary tracking for binary image

Li Chen, Yang Yang, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 7850, 78500K (2010) https://doi.org/10.1117/12.869443

KEYWORDS: Detection and tracking algorithms, Binary data, Lithium, Image processing, Optical tracking, Optical instrument design, Medical research, Machine vision, Computer programming, Optoelectronics

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Proceedings Article | 6 November 2010 Paper

A simulation imaging method for actual optical system and results analysis

Fen Neng, Qiangsheng Liu, Hongbo Shang, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 7849, 78490E (2010) https://doi.org/10.1117/12.869009

KEYWORDS: Mirrors, Point spread functions, Image quality, Optical simulations, Image processing, Imaging systems, Optical fabrication, Tolerancing, Zemax, Optical testing

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Proceedings Article | 6 November 2010 Paper

Analysis methods for polarization state and energy transmission of rays propagating in optical systems

Chao Liu, Qiangsheng Liu, Zhaofeng Cen, Xiaotong Li

Proceedings Volume 7849, 78490G (2010) https://doi.org/10.1117/12.869444

KEYWORDS: Polarization, Analytical research, Reflection, Geometrical optics, Optical design, Ray tracing, Imaging systems, Reflectivity, Zemax, Calculus

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Proceedings Article | 6 February 2008 Paper

Pulse transmission simulation in the systems including diffraction components by real ray trace

Xiaotong Li, Zhaofeng Cen, Shitao Deng

Proceedings Volume 6823, 68230J (2008) https://doi.org/10.1117/12.757855

KEYWORDS: Diffraction, Ray tracing, Optical components, Binary data, Pulsed laser operation, Diffraction gratings, Chromatic aberrations, Optical design, Holography, Geometrical optics

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Proceedings Article | 28 November 2007 Paper

Analysis of infrared radiation from optical window with graded temperature distribution

Xiaotong Li, Zhaofeng Cen, Qiangsheng Liu

Proceedings Volume 6834, 68341B (2007) https://doi.org/10.1117/12.757836

KEYWORDS: Infrared radiation, Sensors, Infrared imaging, Thermography, Temperature metrology, Ray tracing, Geometrical optics, Metals, Signal to noise ratio

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Proceedings Article | 28 November 2007 Paper

Research-oriented teaching in optical design course and its function in education

Zhaofeng Cen, Xiaotong Li, Xiangdong Liu, Shitao Deng

Proceedings Volume 6834, 68340I (2007) https://doi.org/10.1117/12.757869

KEYWORDS: Computer aided design, Optical design, Computer programming, Engineering education, Consciousness, Analytical research, Geometrical optics, Optical engineering, Optics manufacturing, Computer engineering

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Proceedings Article | 28 November 2007 Paper

Comparison of ray-tracing methods in self-adaptive grid for inhomogeneous medium

S. Deng, X. Li, Z. Cen, Q. Liu

Proceedings Volume 6834, 68341D (2007) https://doi.org/10.1117/12.754656

KEYWORDS: Ray tracing, Refractive index, Gradient-index optics, GRIN lenses, Atmospheric optics, Zemax, Laser applications, Liquids, Lens design, Geometrical optics

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Proceedings Article | 24 October 2006 Paper

A novel description of refractive index in irregular inhomogeneous optical medium

Chunsheng Liu, Xingliang Yin, Tianxu Zhang, Shitao Deng, Xiaotong Li

Proceedings Volume 6357, 63571E (2006) https://doi.org/10.1117/12.716974

KEYWORDS: Refractive index, Ray tracing, GRIN lenses, Atmospheric optics, Temperature metrology, Geometrical optics, Gradient-index optics, 3D modeling, Error analysis, Information operations

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Proceedings Article | 10 February 2005 Paper

Influence of thermal radiations in infrared optical systems

Xiao Xi, Xiaotong Li, Zhaofeng Cen

Proceedings Volume 5638, (2005) https://doi.org/10.1117/12.572763

KEYWORDS: Thermography, Infrared imaging, Infrared radiation, Infrared detectors, Signal detection, Receivers, Signal to noise ratio, Optical design, Interference (communication), Temperature metrology

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Proceedings Article | 10 February 2005 Paper

Optical design of free-face reflective headlamps

Zhao Feng Cen, Xiao Tong Li, Shi Tao Deng

Proceedings Volume 5638, (2005) https://doi.org/10.1117/12.575710

KEYWORDS: Headlamps, Mirrors, Reflectivity, Computer simulations, Optical design, Shape analysis, Light sources, Interfaces, Reflection, Algorithm development

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Proceedings Article | 26 January 2005 Paper

Visualization techniques for ghost in complex systems: examples from the technical integration line

Shitao Deng, Xiaotong Li, Zhaofeng Cen, Qihua Zhu, Fang Wang, Hongjie Liu

Proceedings Volume 5627, (2005) https://doi.org/10.1117/12.574016

KEYWORDS: Visualization, Optical amplifiers, Visual analytics, Laser systems engineering, Ray tracing, Complex systems, Optical components, Mirrors, High power lasers, Fusion energy

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Proceedings Article | 26 January 2005 Paper

Paraxial analysis of stray light caused by multi-order diffraction and multireflection

Xiaotong Li, Zhaofeng Cen, Haofei Liu, Shitao Deng, Qihua Zhu, Fang Wang, Hongjie Liu

Proceedings Volume 5627, (2005) https://doi.org/10.1117/12.577016

KEYWORDS: Stray light, Diffraction, High power lasers, Laser systems engineering, Reflection, Stray light analysis, Reflectivity, Monte Carlo methods, Optical components, Optical instrument design

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Proceedings Article | 18 January 2005 Paper

SNR analysis for the detection instrument of microfluidic chips

En Lin Cai, Zhao Feng Cen, Xiao Tong Li

Proceedings Volume 5630, (2005) https://doi.org/10.1117/12.574184

KEYWORDS: Signal to noise ratio, Luminescence, Microfluidics, Amplifiers, Stray light, Optical filters, Argon ion lasers, Laser induced fluorescence, Electronic filtering, Computing systems

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Proceedings Article | 20 September 2002 Paper

Optmization design of zoom lens systems

Xiaotong Li, Zhaofeng Cen

Proceedings Volume 4927, (2002) https://doi.org/10.1117/12.471198

KEYWORDS: Zoom lenses, Lens design, Optical design, Modulation transfer functions, Optical instrument design, Optimization (mathematics), Cameras, Zemax, Imaging systems, Complex systems

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Proceedings Article | 12 September 2002 Paper

Laser-induced fluorescence detection system for microfluidic chip

Yan Li, Zhaofeng Cen, Xiaotong Li, Zhengkang Bao

Proceedings Volume 4916, (2002) https://doi.org/10.1117/12.483011

KEYWORDS: Objectives, Microfluidics, Laser induced fluorescence, Confocal microscopy, Signal to noise ratio, Fluorescence spectroscopy, Chemical analysis, Luminescence, Biological research, Sensors

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Proceedings Article | 5 September 2002 Paper

Stray light analysis of basic model Gaussian beam

Zhaofeng Cen, Xiaotong Li, Zhiping He, Qihua Zhu, Qingquan Zhang

Proceedings Volume 4914, (2002) https://doi.org/10.1117/12.481750

KEYWORDS: Gaussian beams, Reflectivity, Stray light, Superposition, Stray light analysis, Laser systems engineering, Reflection, Data modeling, Mathematical modeling, Binary data

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Proceedings Article | 5 September 2002 Paper

Ghost image analysis of multipass amplifier laser

Zhiping He, Zhaofeng Cen, Xiaotong Li, Qihua Zhu, Qingquan Zhang

Proceedings Volume 4914, (2002) https://doi.org/10.1117/12.481827

KEYWORDS: Stray light, Optical amplifiers, Geometrical optics, Reflection, Image analysis, Ray tracing, Optical design, High power lasers, Mathematical modeling, Fusion energy

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