Prof. Hui-min Yan Profile

Prof. Hui-min Yan

at Zhejiang Univ

SPIE Involvement:

Author

Publications (31)

Proceedings Article | 23 July 2022 Paper

Combination of dot-matrix lighting and floodlighting for multipath interference suppression in ToF imaging

Xiaoyue Liu, Jiayi Huo, Huimin Yan

Proceedings Volume 12277, 1227709 (2022) https://doi.org/10.1117/12.2619673

KEYWORDS: Light sources and illumination, Reflectivity, Modulation, Cameras, Time of flight cameras, Time of flight imaging, Sensors, Phase measurement, Infrared cameras

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Proceedings Article | 17 May 2019 Paper

Object recognition through scattering media using convolutional neural network

Yulin Wu, Huimin Yan

Proceedings Volume 11170, 111700J (2019) https://doi.org/10.1117/12.2532238

KEYWORDS: Speckle pattern, Scattering media, Spatial light modulators, Object recognition, Convolutional neural networks, Scattering

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Proceedings Article | 24 October 2017 Paper

Research of the absorbance detection and fluorescence detection for multifunctional nutrition analyzer

Zhengyuan Ni, Huimin Yan, Xuxiang Ni, Xiuda Zhang

Proceedings Volume 10461, 1046110 (2017) https://doi.org/10.1117/12.2285019

KEYWORDS: Fluorescence spectroscopy, Absorbance, Analytical research, Photon counting

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Proceedings Article | 19 October 2016 Paper

Design of a new type spectacle frames scanner

Xiaodong Chen, Dong Guan, Xiuda Zhang, Huimin Yan

Proceedings Volume 10155, 1015530 (2016) https://doi.org/10.1117/12.2247302

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Proceedings Article | 19 October 2016 Paper

Research of the chemiluminescence detection apparatus for nutrients

Xiaoyi Xu, Yu Wang, Xuxiang Ni, Huimin Yan

Proceedings Volume 10155, 1015520 (2016) https://doi.org/10.1117/12.2246772

KEYWORDS: Chemiluminescence, Luminescence, Photon counting

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Proceedings Article | 19 October 2016 Paper

Research of spectacle frame measurement system based on structured light method

Dong Guan, Xiaodong Chen, Xiuda Zhang, Huimin Yan

Proceedings Volume 10155, 101551W (2016) https://doi.org/10.1117/12.2246753

KEYWORDS: Eyeglasses, Imaging systems, 3D image processing, Optical testing, Reflectivity, Denoising

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Proceedings Article | 15 October 2015 Paper

Research of the fluorescence detection apparatus for nutrients

Yu Wang, Huimin Yan, Xuxiang Ni, Xiaoyi Xu, Shibing Chen

Proceedings Volume 9672, 96720U (2015) https://doi.org/10.1117/12.2202740

KEYWORDS: Luminescence, Fluorescence spectroscopy, Optical filters, Analytical research, Single photon, Photons, Photomultipliers, Light, Optical fibers, Fluorescent markers

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Proceedings Article | 19 December 2013 Paper

The design of color spectrophotometer based on diffuse illumination and compatible SCE/SCI geometric condition

Kun Yuan, Hui-min Yan, Shang-zhong Jin

Proceedings Volume 9046, 90460V (2013) https://doi.org/10.1117/12.2036508

KEYWORDS: Integrating spheres, Instrument modeling, Spectrophotometry, Calibration, Light emitting diodes, Reflectivity, Light, Coating, Data modeling, Color difference

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Proceedings Article | 30 August 2013 Paper

Research of high power and stable laser in portable Raman spectrometer based on SHINERS technology

Yongsheng Cui, Yu Yin, Yulin Wu, Xuxiang Ni, Xiuda Zhang, Huimin Yan

Proceedings Volume 8910, 89101J (2013) https://doi.org/10.1117/12.2034595

KEYWORDS: Raman spectroscopy, Spectroscopy, Semiconductor lasers, Laser stabilization, Control systems, Light scattering, Temperature metrology, Laser applications, High power lasers, Detection and tracking algorithms

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The intensity of Raman light is very weak, which is only from 10^-12 to 10^-6 of the incident light. In order to obtain the required sensitivity, the traditional Raman spectrometer tends to be heavy weight and large volume, so it is often used as indoor test device. Based on the Shell-Isolated Nanoparticle-Enhanced Raman Spectroscopy (SHINERS) method, Raman optical spectrum signal can be enhanced significantly and the portable Raman spectrometer combined with SHINERS method will be widely used in various fields. The laser source must be stable enough and able to output monochromatic narrow band laser with stable power in the portable Raman spectrometer based on the SHINERS method. When the laser is working, the change of temperature can induce wavelength drift, thus the power stability of excitation light will be affected, so we need to strictly control the working temperature of the laser, In order to ensure the stability of laser power and output current, this paper adopts the WLD3343 laser constant current driver chip of Wavelength Electronics company and MCU P89LPC935 to drive LML - 785.0 BF - XX laser diode(LD). Using this scheme, the Raman spectrometer can be small in size and the drive current can be constant. At the same time, we can achieve functions such as slow start, over-current protection, over-voltage protection, etc. Continuous adjustable output can be realized under control, and the requirement of high power output can be satisfied. Max1968 chip is adopted to realize the accurate control of the laser’s temperature. In this way, it can meet the demand of miniaturization. In term of temperature control, integral truncation effect of traditional PID algorithm is big, which is easy to cause static difference. Each output of incremental PID algorithm has nothing to do with the current position, and we can control the output coefficients to avoid full dose output and immoderate adjustment, then the speed of balance will be improved observably. Variable integral incremental digital PID algorithm is used in the TEC temperature control system. The experimental results show that comparing with other schemes, the output power of laser in our scheme is more stable and reliable, moreover the peak value is bigger, and the temperature can be precisely controlled in ±0.1°C, then the volume of the device is smaller. Using this laser equipment, the ideal Raman spectra of materials can be obtained combined with SHINERS technology and spectrometer equipment.

Proceedings Article | 30 August 2013 Paper

The research of digital circuit system for high accuracy CCD of portable Raman spectrometer

Yu Yin, Yongsheng Cui, Xiuda Zhang, Huimin Yan

Proceedings Volume 8910, 89101K (2013) https://doi.org/10.1117/12.2034602

KEYWORDS: Charge-coupled devices, Raman spectroscopy, Spectroscopy, CCD image sensors, Digital electronics, Analog electronics, Signal processing, Amplifiers, Power supplies, Digital signal processing

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The Raman spectrum technology is widely used for it can identify various types of molecular structure and material. The portable Raman spectrometer has become a hot direction of the spectrometer development nowadays for its convenience in handheld operation and real-time detection which is superior to traditional Raman spectrometer with heavy weight and bulky size. But there is still a gap for its measurement sensitivity between portable and traditional devices.

However, portable Raman Spectrometer with Shell-Isolated Nanoparticle-Enhanced Raman Spectroscopy (SHINERS) technology can enhance the Raman signal significantly by several orders of magnitude, giving consideration in both measurement sensitivity and mobility. This paper proposed a design and implementation of driver and digital circuit for high accuracy CCD sensor, which is core part of portable spectrometer. The main target of the whole design is to reduce the dark current generation rate and increase signal sensitivity during the long integration time, and in the weak signal environment. In this case, we use back-thinned CCD image sensor from Hamamatsu Corporation with high sensitivity, low noise and large dynamic range. In order to maximize this CCD sensor’s performance and minimize the whole size of the device simultaneously to achieve the project indicators, we delicately designed a peripheral circuit for the CCD sensor. The design is mainly composed with multi-voltage circuit, sequential generation circuit, driving circuit and A/D transition parts. As the most important power supply circuit, the multi-voltage circuits with 12 independent voltages are designed with reference power supply IC and set to specified voltage value by the amplifier making up the low-pass filter, which allows the user to obtain a highly stable and accurate voltage with low noise. What’s more, to make our design easy to debug, CPLD is selected to generate sequential signal. The A/D converter chip consists of a correlated double sampler; a digitally controlled variable gain amplifier and a 16-bit A/D converter which can help improve the data quality. And the acquired digital signals are transmitted into the computer via USB 2.0 data port.

Our spectrometer with SHINERS technology can acquire the Raman spectrum signals efficiently in long time integration and weak signal environment, and the size of our system is well controlled for portable application.

Proceedings Article | 13 November 2010 Paper

Beam-shaping of laser diode stack for uniform illumination by cylindrical micro-lenses

Wangpin ShangGuan, Huimin Yan, Yanbing Jiang, Xiuda Zhang, Chao Yang

Proceedings Volume 7844, 784405 (2010) https://doi.org/10.1117/12.869960

KEYWORDS: Gaussian beams, Beam shaping, Semiconductor lasers, Optical design, Superposition, Imaging systems, Beam propagation method, High power lasers, Optical components, Fiber optic illuminators

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Proceedings Article | 5 November 2010 Paper

Sub short noise 3D laser radar based on second-order coherence

Xiuda Zhang, Huimin Yan, Qin Zhou

Proceedings Volume 7854, 78540R (2010) https://doi.org/10.1117/12.869491

KEYWORDS: Signal to noise ratio, Imaging systems, Image intensifiers, 3D image processing, Photons, LIDAR, CCD cameras, Stereoscopy, Modulation, Charge-coupled devices

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Proceedings Article | 5 November 2010 Paper

Iterative restoration algorithms for improving the range accuracy in imaging laser radar

Chao Yang, Huimin Yan, Xiuda Zhang, Wangpin Shangguan, Heng Su

Proceedings Volume 7854, 78542V (2010) https://doi.org/10.1117/12.869791

KEYWORDS: Point spread functions, Radar imaging, Imaging systems, LIDAR, Modulation, Modulation transfer functions, Image processing, Ranging, Reflectivity, Image intensifiers

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SPIE Journal Paper | 1 April 2010

Beam-shaping method for uniform illumination by superposition of tilted Gaussian beams

Yanbing Jiang, Huimin Yan, Xiuda Zhang

OE, Vol. 49, Issue 04, 044203, (April 2010) https://doi.org/10.1117/12.10.1117/1.3407457

KEYWORDS: Gaussian beams, Superposition, Beam shaping, Laser beam propagation, Beam propagation method, Optical engineering, Illumination engineering, Imaging systems, Fourier transforms, Semiconductor lasers

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Proceedings Article | 8 January 2008 Paper

Pulse response research of avalanche photodiode for range detection application

Yanbing Jiang, Huimin Yan, Qiming Wang

Proceedings Volume 6838, 68380I (2008) https://doi.org/10.1117/12.755446

KEYWORDS: Avalanche photodetectors, Pulsed laser operation, Avalanche photodiodes, Time metrology, Semiconductor lasers, Signal detection, Laser systems engineering, Ionization, Monte Carlo methods, Thulium

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Proceedings Article | 19 November 2007 Paper

On-line inspection system of surface quality for medical film

Wei Lu, Hui-min Yan, Wen Qiao

Proceedings Volume 6724, 67240H (2007) https://doi.org/10.1117/12.782512

KEYWORDS: Inspection, Charge-coupled devices, Spatial resolution, Signal processing, Light emitting diodes, Manufacturing, Optics manufacturing, Video, Analog electronics, Quality systems

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Proceedings Article | 19 November 2007 Paper

Novel system for optical axis on-line calibration

Wen Qiao, Huimin Yan, Wei Lu

Proceedings Volume 6724, 672405 (2007) https://doi.org/10.1117/12.782456

KEYWORDS: Calibration, Optical calibration, Charge-coupled devices, Computer programming, Control systems, Optical components, Interfaces, Coherence (optics), Programmable logic devices, Data storage

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Proceedings Article | 11 January 2007 Paper

3D framing camera system based on sample cumulation method

Yanbing Jiang, Huiming Yan, Xiuda Zhang, Long Wang, Yan Li

Proceedings Volume 6279, 62790J (2007) https://doi.org/10.1117/12.725097

KEYWORDS: Stereoscopic cameras, Imaging systems, 3D image processing, Binary data, Image intensifiers, Pulsed laser operation, Cameras, Signal processing, Microchannel plates, Charge-coupled devices

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Proceedings Article | 11 January 2007 Paper

A 3D framing camera with pulse laser and modulated receiver

Xiuda Zhang, Huiming Yan, Yanbing Jiang, Shenbao Yin

Proceedings Volume 6279, 62792K (2007) https://doi.org/10.1117/12.725257

KEYWORDS: Modulation, Microchannel plates, Receivers, Pulsed laser operation, Stereoscopic cameras, Charge-coupled devices, Cameras, Imaging systems, 3D modeling, 3D metrology

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It is convenient to apply three-dimensional (3D) detecting instruments to automatic drive, virtual reality modeling, terrain reconnaissance, etc. It is presented that a new high-speed camera which achieves one three-dimensions image by only one light pulse in this paper. It has a measurement range of one kilometer and a distance resolution of five meters. This camera is composed with a pulse laser and three receivers which are made up with a Micro Channel Plate (MCP) and a Charge Coupled Device (CCD) each. These parts are mature commercial productions that provide low cost and high reliable to the 3D camera. As soon as the pulse laser emits a light pulse, the three receivers are modulated with synchronistical control circuits. A 3D picture can be calculated by three different density images which are obtained by that. The one-light-pulse-one-picture mode gives a flexible way to work with a gate signal. A 3D camera working with high-speed gate signal can achieve high-speed photography easily. A mathematic model is established to describe measurement range, distance detection precision and space resolving of the camera. The best modulation functions of the receivers are given with consideration of white noise by Euler-Lagrange equation. Due to the best modulation function we give a scheme is follows: The first receiver is modulated by a const gain, the second one is modulated by a linearly increasing gain and the last one is modulated by a linear decreasing gain. This combination achieve both low noise and simple structure. Because of the simple structure, several fibers which we named amending fibers can be used to amend error of receiver modulation and synchronistical error. Analysis of the detection precisions of the camera and continuous wave detection systems are carried out both in time domain and frequency domain. The results indicate pulse laser can increase the detection range by suppressing background light greatly and decreasing imaging time. But it achieves lower precision if the background light is faintness. Simulation experiment results are presented in this paper. A 1.4 kilometers fiber was used in this experiment to simulate a 700 meters distant, a Laser Diode (LD) is employed to simulate the pulse laser. A high voltage modulation circuit was designed to modulate the gain of MCP to implement the modulation function. The experiment results with and without amending fibers indicated that the primary noises come from CCD and the high voltage modulation circuit. The amending fibers can weaken the circuit errors in some degree. Future improvement is described in the end of the paper also.

Proceedings Article | 26 January 2006 Paper

Digital photofinishing system based on liquid crystal on silicon

Minmin Zheng, Huimin Yan, Xiuda Zhang, Yanli Du

Proceedings Volume 6030, 60300O (2006) https://doi.org/10.1117/12.667637

KEYWORDS: Liquid crystal on silicon, Digital photography, Polarization, Beam splitters, Digital electronics, Reflectivity, LCDs, Clocks, RGB color model, Control systems

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Proceedings Article | 9 December 2005 Paper

A new three dimension PLMR imaging system

Xiuda Zhang, Huimin Yan, Minmin Zheng

Proceedings Volume 6024, 60241A (2005) https://doi.org/10.1117/12.666855

KEYWORDS: Microchannel plates, Imaging systems, Pulsed laser operation, Avalanche photodetectors, 3D image processing, Modulation, Charge-coupled devices, 3D metrology, Range imaging, Laser systems engineering

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Proceedings Article | 5 December 2005 Paper

Ultra-thin metallic foil thickness measurement system using fiber optic low-coherence interferometry

Yanli Du, Huimin Yan, Yongjun Nie, Xiuda Zhang

Proceedings Volume 6019, 60194H (2005) https://doi.org/10.1117/12.635509

KEYWORDS: Interferometry, Data processing, Ocean optics, Fiber optics, Reflectivity, Spectroscopy, Interferometers, Fiber optics tests, Michelson interferometers, Light sources

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Proceedings Article | 10 February 2005 Paper

Noncontact thickness measurement of metal foil by means of differential white light interferometry

Yanli Du, Huimin Yan, Yong Wu, Xiaoqiang Yao, Yongjun Nie, Baixuan Shi

Proceedings Volume 5638, (2005) https://doi.org/10.1117/12.576056

KEYWORDS: Metals, Spectroscopy, Calibration, Ocean optics, Signal processing, Optical interferometry, Charge-coupled devices, Halogens, Lamps, Light sources

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Proceedings Article | 10 February 2005 Paper

Data-processing method of white-light differential interference based on wavelet transform

Yongjun Nie, Huimin Yan, Yanli Du, Yong Wu, Xiaoqiang Yao, Baixuan Shi

Proceedings Volume 5638, (2005) https://doi.org/10.1117/12.576113

KEYWORDS: Wavelet transforms, Wavelets, Signal processing, Data processing, Metals, Light sources, Charge-coupled devices, Spectroscopy, Reconstruction algorithms, Light

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Proceedings Article | 17 January 2005 Paper

Micromachining-based fiber-coupled variable optical attenuator

Huiming Yan, Zhonghui Cao, Xingkun Wu

Proceedings Volume 5644, (2005) https://doi.org/10.1117/12.577310

KEYWORDS: Variable optical attenuators, Micromachining, Magnetism, Optoelectronic devices, Actuators, Signal attenuation, Fabrication, Laser engraving, Laser welding, Fiber coupled lasers

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Proceedings Article | 17 January 2005 Paper

An optical switch array with 750 microseconds switch time

Peng Wan, Huiming Yan, Xingkun Wu

Proceedings Volume 5644, (2005) https://doi.org/10.1117/12.581031

KEYWORDS: Switches, Switching, Optical switching, Mirrors, Optical arrays, Magnetism, Micromirrors, Actuators, Collimators, Electromagnetism

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Proceedings Article | 17 January 2005 Paper

Linearity compensations for a digital variable optical attenuator

Zhonghui Cao, Huiming Yan, Xingkun Wu

Proceedings Volume 5644, (2005) https://doi.org/10.1117/12.575777

KEYWORDS: Camera shutters, Signal attenuation, Variable optical attenuators, Collimators, Actuators, Electromagnetism, Data transmission, Numerical simulations, Wavelength division multiplexing, Micromachining

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Proceedings Article | 3 October 2000 Paper

Optoelectric phase discriminator array implemented with CCD

Huimin Yan, Jianmei Zhang

Proceedings Volume 4220, (2000) https://doi.org/10.1117/12.401746

KEYWORDS: Charge-coupled devices, Signal detection, Phase shift keying, Modulation, Range imaging, 3D image processing, 3D scanning, Microchannel plates, Camera shutters, Imaging systems

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Proceedings Article | 9 May 2000 Paper

Ultrasonic sensor and in-situ correction for the monitoring of indistinct interface level

Huimin Yan

Proceedings Volume 4077, (2000) https://doi.org/10.1117/12.385559

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Proceedings Article | 10 August 1998 Paper

Scannerless laser three-dimensional imaging method

Huimin Yan, Zukang Lu

Proceedings Volume 3558, (1998) https://doi.org/10.1117/12.318338

KEYWORDS: Modulation, Image intensifiers, Virtual colonoscopy, Microchannel plates, 3D image processing, 3D scanning, LIDAR, Laser range finders, Stereoscopy, Imaging systems

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Proceedings Article | 7 February 1994 Paper

Optical computer tomography system with fiber optic sensor for high-temperature distribution measurement

Huimin Yan

Proceedings Volume 2072, (1994) https://doi.org/10.1117/12.166841

KEYWORDS: Computed tomography, Temperature metrology, Optical fibers, Sensors, Computing systems, Tomography, Combustion, Fiber optics sensors, Pyrometry, Optical tomography

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