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Research survey on microscopy autofocus methods 显微镜自动聚焦方法研究综述
光学技术 Pub Date : 2014-01-01 DOI: 10.3788/GXJS20144001.0084
田畔 Tian Pan, 谷朝臣 Gu Chao-chen, 胡洁 Hu Jie, 吴开杰 Wu Kai-jie, 彭颖红 Peng Yinghong
{"title":"Research survey on microscopy autofocus methods","authors":"田畔 Tian Pan, 谷朝臣 Gu Chao-chen, 胡洁 Hu Jie, 吴开杰 Wu Kai-jie, 彭颖红 Peng Yinghong","doi":"10.3788/GXJS20144001.0084","DOIUrl":"https://doi.org/10.3788/GXJS20144001.0084","url":null,"abstract":"Autofocus is the key technology for automated microscopy.The velocity and accuracy of microscopy is dependent on autofocus methods.There are two types of autofocus technology,the passive type and the active type.The passive type is based on the digital image and the active one is based on the optical defocus error detection.By comparison the principles and development of the two types,it can be concluded that the active type based on the defocus error detection is more fast and accurate,which is more suitable for the automated microscopy.","PeriodicalId":35591,"journal":{"name":"光学技术","volume":"40 1","pages":"84-88"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70262326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Study on the filtering algorithm of photon correlation spectroscopy based on singular value decomposition 基于奇异值分解的光子相关光谱滤波算法研究
光学技术 Pub Date : 2014-01-01 DOI: 10.3788/GXJS20144001.0016
于向飞 Yu Xiangfei, 杨. Y. Hui, 杨海马 Yang Haima, 郑. Z. Gang, 胡恒庆 Hu Hengqing, 李. L. Jun, M. Biggs, 宋磊磊 Song Leilei
{"title":"Study on the filtering algorithm of photon correlation spectroscopy based on singular value decomposition","authors":"于向飞 Yu Xiangfei, 杨. Y. Hui, 杨海马 Yang Haima, 郑. Z. Gang, 胡恒庆 Hu Hengqing, 李. L. Jun, M. Biggs, 宋磊磊 Song Leilei","doi":"10.3788/GXJS20144001.0016","DOIUrl":"https://doi.org/10.3788/GXJS20144001.0016","url":null,"abstract":"During the measurement of the ultrafine nanoparticles' s size with the method of PCS(Photon Correlation Spectroscopy),the fitting results are always susceptible to the noise and have quite large errors.To solve the problem, the filtering algorithm of photon correlation spectroscopy based on singular value decomposition is proposed.Its procedure is:the Hankel matrix H with the intensity autocorrelation data is constructed;the singular value decomposition of His calculated;the reconstruction parameters r with the singular value of H are determined;the filtered light intensity autocorrelation data from the reconstruction matrix H1 are extrac-ted,and fitting with the traditional method,and then the particle size distribution is obtained.The experiment is carried out in two different particle dispersions,one is 30nm standard monodisperse latex particle dispersion,and another is 30nm and 100nm standard double dispersion latex particle dispersion.The results show that,the filtering algorithm of photon correlation spectroscopy based on singular value decomposition can improve the measurement accuracy effectively.","PeriodicalId":35591,"journal":{"name":"光学技术","volume":"33 1","pages":"16-20"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70262419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Low-concentration detection of benzene using laser Raman spectroscopy 激光拉曼光谱法检测低浓度苯
光学技术 Pub Date : 2014-01-01 DOI: 10.3788/GXJS20144003.0195
马. M. Jing, 黄蓉 Huang Rong
{"title":"Low-concentration detection of benzene using laser Raman spectroscopy","authors":"马. M. Jing, 黄蓉 Huang Rong","doi":"10.3788/GXJS20144003.0195","DOIUrl":"https://doi.org/10.3788/GXJS20144003.0195","url":null,"abstract":"Laser Raman spectroscopy technique based on Raman scattering theory has the advantages of rapid,nondestructive,and without sample pretreatment.25samples of benzene with different concentrations are studied by using laser Raman spectroscopy technique.The results show that in the 184.8g/L~0.264g/L concentration range,the linear relationship between the intensity of Raman lines of benzene and its concentration.The linear correlation coefficient of R=0. 99626is obtained by using the least square method.The detection limit is 0.223g/L.","PeriodicalId":35591,"journal":{"name":"光学技术","volume":"40 1","pages":"195-198"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70264435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A new method of making real-color rainbow hologram with wide viewing angle 一种制作宽视角真彩色彩虹全息图的新方法
光学技术 Pub Date : 2014-01-01 DOI: 10.3788/GXJS20144003.0205
甘亮勤 Gan Liangqin, 曾胜财 Zeng Shengcai, 杨上供 Yang Shanggong
{"title":"A new method of making real-color rainbow hologram with wide viewing angle","authors":"甘亮勤 Gan Liangqin, 曾胜财 Zeng Shengcai, 杨上供 Yang Shanggong","doi":"10.3788/GXJS20144003.0205","DOIUrl":"https://doi.org/10.3788/GXJS20144003.0205","url":null,"abstract":"In order to improve the color effect and the visual angle of hologram,based on the method of mirror images,a new technique is proposed to obtain a real color hologram with a large viewing angle by the combination of computer-generated hologram and optical hologram.There are two steps to realize the method:Firstly,computer-generated hologram H1r,H1g,H1bis yielded with three image objects.Secondly,a rainbow hologram H2is generated by optical ways.In terms of the reversibility of light path principle,an image with a wide viewing angle is reconstructed by reversing the reconstructed wave.The technique achieves a color reconstruction image with a wide viewing angle of 14°.The color effect and the stereoscopic effect of the reconstruction image is increased.","PeriodicalId":35591,"journal":{"name":"光学技术","volume":"40 1","pages":"205-208"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70264450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimization of reconstructed images of 3-D phase hologram based on phase-only spatial light modulator 基于纯相位空间光调制器的三维相位全息图重构图像优化
光学技术 Pub Date : 2014-01-01 DOI: 10.3788/GXJS20144003.0230
梁浩聪 Liang Hao-cong, 蒋晓瑜 Jiang Xiaoyu, 牛树来 Niu Shulai, 闫兴鹏 Yan Xingpeng, 赵. Z. Kai
{"title":"Optimization of reconstructed images of 3-D phase hologram based on phase-only spatial light modulator","authors":"梁浩聪 Liang Hao-cong, 蒋晓瑜 Jiang Xiaoyu, 牛树来 Niu Shulai, 闫兴鹏 Yan Xingpeng, 赵. Z. Kai","doi":"10.3788/GXJS20144003.0230","DOIUrl":"https://doi.org/10.3788/GXJS20144003.0230","url":null,"abstract":"Based on the existed ways of 2-D reconstructed images by spatial light modulator(SLM),the methods to enhance the reconstructed quality of 3-D images are investigated.Based on the diffraction theory,the effects of a lattice SLM with a limited fill factor on the reconstructed images are analyzed.The effective light is moved away from the center optical axis by coding the double linear phases into the phase-only hologram,so the details of the original patterns can be reconstructed completely.The two focused planes of reconstructed images and the multi-order beams caused by the lattice structure of the SLM can be separated spatially,through adding the phases of doubleconvergent spherical wave.The spatial filter is used to eliminate the influences of higher-orders diffraction beams and zero-order light of reconstructed images,respectively.A holographic optoelectronic display system based on liquid crystal spatial light modulator(LC-SLM) is set up to demonstrate this method.","PeriodicalId":35591,"journal":{"name":"光学技术","volume":"40 1","pages":"230-234"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70264532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optical characteristics analysis of grating light valve and application in thermal CTP system 光栅光阀光学特性分析及其在热敏CTP系统中的应用
光学技术 Pub Date : 2014-01-01 DOI: 10.3788/GXJS20144004.0371
缪斌鹰 Miao Binying, 唐正宁 Tang Zhengning
{"title":"Optical characteristics analysis of grating light valve and application in thermal CTP system","authors":"缪斌鹰 Miao Binying, 唐正宁 Tang Zhengning","doi":"10.3788/GXJS20144004.0371","DOIUrl":"https://doi.org/10.3788/GXJS20144004.0371","url":null,"abstract":"The grating light valve(GLV)is a diffractive MOEMS spatial light modulator,and it has been successfully applied in the computer-to-plate(CTP)system by modulating laser beams.A simplified grating light valve optical model is put forward,and the optical characteristics of GLV is analyzed according to Fraunhofer single-slit diffraction theory and multiple beam interference theory.The application of grating light valve in thermal CTP system is described,and the structure and imaging principle of GLV optical write engine are analyzed.The digital imaging process of the GLV-based thermal CTP system is concluded,which provides the theory basis for the domestic printing enterprise to use the thermal imaging technology.","PeriodicalId":35591,"journal":{"name":"光学技术","volume":"40 1","pages":"371-375"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70265293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design and implementation of servo system in swing mirror 摆镜伺服系统的设计与实现
光学技术 Pub Date : 2014-01-01 DOI: 10.3788/GXJS20144006.0504
毛博年 Mao Bonian, 孟. M. Xin, 卞春江 Bian Chunjiang, 冯水春 Feng Shuichun, 周海 Zhou Hai, 张. Z. Lei
{"title":"Design and implementation of servo system in swing mirror","authors":"毛博年 Mao Bonian, 孟. M. Xin, 卞春江 Bian Chunjiang, 冯水春 Feng Shuichun, 周海 Zhou Hai, 张. Z. Lei","doi":"10.3788/GXJS20144006.0504","DOIUrl":"https://doi.org/10.3788/GXJS20144006.0504","url":null,"abstract":"Optics swing mirror is a core module with special requirements of high precision and fast response in target simulator of infrared interference.In order to achieve theses pecial requirements,a design method of servo control system is proposed.The high-precision control system which adopts angle feedback and velocity feedback by PID algorithm is built with DSP,brushless resolvers and limited angle brushless torque motor.The experimental result indicates that the system can make the swing mirror achieve precise movement control and fast response.The design method of the servo control system can be widely used in the area of high-precision scanning control systems and has good application prospect in engineering.","PeriodicalId":35591,"journal":{"name":"光学技术","volume":"40 1","pages":"504-507"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70266203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on transmission power spectrum of tilted fiber Bragg grating temperature sensing 倾斜光纤光栅温度传感的传输功率谱研究
光学技术 Pub Date : 2014-01-01 DOI: 10.3788/GXJS20144004.0327
高宇飞 Gao Yufei, 刘. L. Chao, 张. Z. Yong
{"title":"Research on transmission power spectrum of tilted fiber Bragg grating temperature sensing","authors":"高宇飞 Gao Yufei, 刘. L. Chao, 张. Z. Yong","doi":"10.3788/GXJS20144004.0327","DOIUrl":"https://doi.org/10.3788/GXJS20144004.0327","url":null,"abstract":"Based on mode coupling theory,tilted fiber Bragg grating temperature sensing principle and the characteristics of transmission spectrum of fundamental modes and high-modes are proposed.The temperature shift of fundamental modes resonance wavelength and high-order modes resonance wavelength is investigated by means of simulation method.The tilted angle on the effect of resonance wavelength is discussed.The results show that the different resonance wavelengths are linealy increased with surrounding temperature.The center wavelength of transmission spectrum is non-drift with the increase of tilted angle,and the width of transmission spectrum decreases with the increase of tilted angle.The result has a certain guiding function to the application of the tilted fiber Bragg grating.","PeriodicalId":35591,"journal":{"name":"光学技术","volume":"40 1","pages":"327-330"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70264936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Design and numerical studies of composite defect photonic crystal optical filter 复合缺陷光子晶体滤光片的设计与数值研究
光学技术 Pub Date : 2014-01-01 DOI: 10.3788/GXJS20144002.0172
陈. C. Ying, 刘腾 Liu Teng, 卢波 Lu Bo, 范卉青 Fan Huiqing
{"title":"Design and numerical studies of composite defect photonic crystal optical filter","authors":"陈. C. Ying, 刘腾 Liu Teng, 卢波 Lu Bo, 范卉青 Fan Huiqing","doi":"10.3788/GXJS20144002.0172","DOIUrl":"https://doi.org/10.3788/GXJS20144002.0172","url":null,"abstract":"To eliminate the multimode property of the photonic crystal ring cavity filter,a composite defect photonic crystal filter structure combined point defect with ring cavity is proposed,in which the line defect is taken as the main waveguide and the load waveguide combining the point defect with the ring cavity is adopted to achieve the filtering for the certain wavelength.By changing the refractive index of the rods in the general photonic crystal structure,the refractive index of the point defect or the size of the point defect,the influences on the filtering property is analyzed.Mis regarded as m=r-point/r,the numerical simulation result shows that the filtering wavelength will remain the same the filtering characteristic when mis varied from 0to 0.6,while mis in the reasonable range from 0.6to 1.8,the single longitudinal mode filtering characteristic and its tunability can be achieved by changing the point defect radius,which can make the effective theoretical reference for the design of multi-channel filter.","PeriodicalId":35591,"journal":{"name":"光学技术","volume":"40 1","pages":"172-175"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70263514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of flow field characteristics in fluid jet polishing 射流抛光流场特性分析
光学技术 Pub Date : 2014-01-01 DOI: 10.3788/GXJS20144004.0376
罗银川 Luo Yinchuan, 李秀龙 Li Xiulong, 张. Z. Yang, 张蓉竹 Zhang Rongzhu, 杨李茗 Yang Liming
{"title":"Analysis of flow field characteristics in fluid jet polishing","authors":"罗银川 Luo Yinchuan, 李秀龙 Li Xiulong, 张. Z. Yang, 张蓉竹 Zhang Rongzhu, 杨李茗 Yang Liming","doi":"10.3788/GXJS20144004.0376","DOIUrl":"https://doi.org/10.3788/GXJS20144004.0376","url":null,"abstract":"By analyzing the flow field characteristics of impinging jet,mathematical relationship between the impact angle,stand-off distance,jet velocity and the pressure,velocity on wall is established.The influence of different parameters on fluid jet distribution is analyzed by quantitative calculate,the results indicate that the pressure and velocity on wall with the outlet pressure,velocity is linearly proportional.When the impact distance is greater than 9.6times of the diameter of nozzle,the pressure and velocity on wall decrease with the increasing of stand-off distance.The peak pressure reduces to 0.54times of the pressure of spout when the impact distance increases to 15times of the diameter of nozzle.And they decrease with the decreasing of impact angle.When impact angles are 90°,60°,45°,ps=0.95p0,0.74p0,0.475p0,and um02=0.96u0,0.8u0,0.67u0are got respectively.","PeriodicalId":35591,"journal":{"name":"光学技术","volume":"40 1","pages":"376-380"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70265331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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