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CCD imagers MTF enhanced filter design 会议论文
Chengdu, China, 2017-10-27
作者:  Jian, Zhang;  Yangyu, Fan;  Zhe, Xu
收藏  |  浏览/下载：30/0  |  提交时间：2018/06/19
Test for Dynamic Range of scientific CCD imaging system 会议论文
Hefei, PEOPLES R CHINA, JUL 25-27, 2018
作者:  Liang, Shaolin;  Wang, Yongmei;  Mao, Jinghua;  Jia, Nan;  Shi, Entao
收藏  |  浏览/下载：34/0  |  提交时间：2019/01/31
Method Used to Test the Imaging Consistency of Binocular Camera's Left-right Optical System 会议论文
8th international symposium on advanced optical manufacturing and testing technology (aomatt) - optical test, measurement technology, and equipment, suzhou, peoples r china, 2016-04-26
作者:  Liu, Meiying;  HuWang;  Liu, Jie;  Xue, Yaoke;  Yang, Shaodong
收藏  |  浏览/下载：20/0  |  提交时间：2016/12/02
Implementation of a networked control system with multi-communication mode 会议论文
2013 International Conference on Mechatronics, Robotics and Automation, ICMRA 2013, June 13, 2013 - June 14, 2013, Guangzhou, China
Wang H. Y.; Ji Q.
收藏  |  浏览/下载：13/0  |  提交时间：2014/05/15
A COMPARATIVE ANALYSIS OF THE 'TRANSMITTANCE' METHOD BETWEEN USING INTEGRATING SPHERE AND FILTER HOLDERS FOR MEASURING LIGHT ABSORPTION BY AQUATIC PARTICLES 会议论文
2012 Ieee International Geoscience and Remote Sensing Symposium, New York
Zou, Lei; Zhang, Bing; Li, Junsheng; Song, Yang; Shen, Qian; Li, Liwei
收藏  |  浏览/下载：11/0  |  提交时间：2014/12/07
Linearity measurement for image-intensified CCD (EI CONFERENCE) 会议论文
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China
Zhao Y.; Zhang L.; Yan F.; Gu Y.; Wan L.
收藏  |  浏览/下载：22/0  |  提交时间：2013/03/25
To the characteristic of the ultraviolet CCD (UV ICCD)  technique of the linearity measurement of the UV ICCD camera is studied based on the theory of radiometry. Approach of linearity measurement is discussed  and a kind of measurement system of the UV ICCD has been developed based on the method of neutral density filter. It is very important that the transmittance of the filter is independent of the wavelength in the method of neutral density filter. Black metal screen mesh with different transmittance is used in our system  and calibration of the filters' transmittance in different working positions has been done. Meanwhile  to assure the uniform of the received radiation on the target of the detector at any test points  an integrating sphere is placed behind the neutral filter to balance light. The whole measurement system mainly consists of a deuterium lamp with high stabilization  the attenuation film with transmission  integrating sphere  optical guide and electro-shift platform. Auto control is realized via special software during the test. With this instrument  the linearity of the UV ICCD was measured. Experimental results show that the nonlinearity of the UV ICCD under fixed-gain is less than 2% and the uncertainty of measurement system is less than 4%. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Development and radiance calibration of three-waveband camera (EI CONFERENCE) 会议论文
International Symposium on Photonics and Optoelectronics, SOPO 2010, June 19, 2010 - June 21, 2010, Chengdu, China
Lu Z.; Sun Q.; Wang J.; Lu Z.; Liu Y.
收藏  |  浏览/下载：22/0  |  提交时间：2013/03/25
An imaging system with three-waveband sharing one lens and an area CCD was developed. By rotating different filters into the beam path  the required waveband was selected. The optical system which can image in ultraviolet  visible and near infrared region was designed and the signal collecting system was integrated. The optical design and system integration have some advantages such as low cost  small size and light in weight. To obtain a high imaging quality  the radiation calibration is carried out in order to establish the relation between the average grey level of output image and the input radiance from the integrating sphere. According to the calibration data in experiments  the radiation dynamic range and the best working point of the system are determined. The experiment result shows that the dynamic range of the image system is maximal when the exposure time is 8ms in ultraviolet  0.5ms in visible and 0.125ms in near infrared region. 2010 IEEE.  
The escaped and trapped emission in organic light-emitting devices 会议论文
作者:  Liang, Shixiong;  Wu, Zhaoxin;  Zhao, Xuanke;  Wang, Dawei;  Hou, Xun
收藏  |  浏览/下载：2/0  |  提交时间：2019/12/10
A sensitive solid-phase time-resolved fluorescence immunoassay apparatus (EI CONFERENCE) 会议论文
International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, June 17, 2009 - June 19, 2009, Beijing, China
Wang Y.-L.; Song K.-F.; Zhang W.-L.; Li J.-L.
收藏  |  浏览/下载：24/0  |  提交时间：2013/03/25
In the device  a He-Ne laser of flash frequency 1-20 Hz was adopted as exciting light source  and three key technical problems have been solved successfully in order to enhance the detecting sensitivity and measuring stability of the device for time-resolved fluorimmunoassays(TRFIA) [1]. The first one is to design optimum exciting optical system  so that the exciting light beam excite the sample most effectively. The second one is to have a project spectrum filter which can reduce the affection of the background light to the photomultiplier tube and also ensure influence of the stray light and mixed diffusion light to the sample fluorescence to the least  the sample fluorescence through the integrating sphere and come to the grating monochromator  The right wavelength will be chosed through changing the angle of incidence of the grating monochromator. The third one is to simulate the principle of sample averaging of BOXCAR averager. In the device  SCM was used as primary controller and CPLD was used as timing controller. Through the preparation process  signal-to-noise ratio(SNR) will be improved  also adjust delay time  ampling frequency and sampling number arbitrarily. By testing  the sensitivity is 10-12mol/L(substance marked by Eu3+)  examination repeat is &le2.5%  examination linearity is from 10 -8mol/L to 10-12mol/L  correlation coefficient is 99.98%(p&le0.01). The instrument is advanced for ultrasensitive detection of antigen and antibody  and solve the tumor  genetic variation  the virus protein detection. 2009 SPIE.  
Study on chroma balance based on grating spectrometer for LED (EI CONFERENCE) 会议论文
Light-Emitting Diode Materials and Devices II, November 12, 2007 - November 14, 2007, Beijing, China
Sun W.-J.; Wang S.-Y.; Yin Y.-Z.; Rong X.-W.; Meng Z.
收藏  |  浏览/下载：19/0  |  提交时间：2013/03/25
A standard white light compounding algorithm based on combination of choma coordinates acquisition system with computer working current control system is presented for three-color LED. The chroma coordinates acquisition system consist of grating spectrometer and integrating sphere. The computer adjust and control the working current of three-color LED  then achieved chroma coordinates error between the compounded white light and standard white light D65  until the chroma coordinates is less than the threshold beforehand set by this technique. The compounded white light meet the chroma error demanded that is able to be changed  at the same time the chroma coordinates acquisition system and the working current control system are eliminated. The proposed algorithm the offset of central wavelength and the change of chroma coordinates due to working current variety for LEDs. Experimental results show that the proposed algorithm achieved lesser chroma error uv=0.001 relative to standard white light D65  enhanced chroma uniformity of illumination field.  

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