Chinese Journal of Optics and Applied Optics最新文献_第2页

Design of infrared optical system with super-long focal length and dual field-of-view 超长焦距双视场红外光学系统的设计

Chinese Journal of Optics and Applied Optics Pub Date : 2014-01-01 DOI: 10.3788/CO.20140704.0631

白玉琢 Bai Yu-zhuo, 木. M. Rui, 马琳 Ma Lin, 贾钰超 Jia Yu-chao, 普群雁 Pu Qun-yan, 薛经纬 Xue Jing-wei

引用次数: 1

Rapid synchronization technology for wireless optical link 无线光链路快速同步技术

Chinese Journal of Optics and Applied Optics Pub Date : 2014-01-01 DOI: 10.3788/CO.20140702.0245

王. W. Xu, 王挺峰 Wang Ting-feng, 王弟男 Wang Di-nan, 王化龙 Wang Hua-long

引用次数: 0

SERS effect of aggregation of silver nanoprisms induced by 785 nm laser 785 nm激光诱导银纳米棱镜聚集的SERS效应

Chinese Journal of Optics and Applied Optics Pub Date : 2014-01-01 DOI: 10.3788/CO.20140701.0118

Xue Bin, Kong Xiang-gui, Wang Dan, Xia Lu

{"title":"SERS effect of aggregation of silver nanoprisms induced by 785 nm laser","authors":"Xue Bin, Kong Xiang-gui, Wang Dan, Xia Lu","doi":"10.3788/CO.20140701.0118","DOIUrl":"https://doi.org/10.3788/CO.20140701.0118","url":null,"abstract":"Surface enhanced Raman spectroscopy( SERS) is an ultrasensitive vibrational spectroscopic technique to detect molecules. At present,adding salts is a main way to induce nanoparticles aggregation to get giant enhancement. However,this method needs more procedures and salts may etch nanoparticles. Here an effective and simple method is reported to enhance SERS effect by the aggregation of silver nanoprisms( AgNPRs) induced by 785 nm laser. Silver nanoprisms were prepared by ligand-assisted chemical reductions method. AgNO 3 were reduced by NaBH 4 in the presence of trisodium citrate,poly( vinylpyrrolidone) and H 2 O 2. The edge of silver nanoprisms is about 80 nm. Surface plasmon band of silver nanoprisms is around 774 nm which could effectively absorb 785 nm laser. When laser irradiating silver nanoprisms during the detection of Raman spectra,these nanoprisms gradually aggregated and SERS spectra of analytes( 4-mercaptobenzoic acid,4-MBA) were gradually enhanced. And enhancement factor of Raman spectra ~ 109is obtained by this method. Due to the huge magnitude of SERS in the near infrared region( excitation wavelength 785 nm),this technique has the potential in the field of biochemical tests.","PeriodicalId":10133,"journal":{"name":"Chinese Journal of Optics and Applied Optics","volume":"1 1","pages":"118-123"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89756473","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

Synthesis and luminescence properties of La1.6(MoO4)3∶Eu3+0.4nanocrystal La1.6(MoO4)3∶Eu3+0.4纳米晶体的合成及发光性能

Chinese Journal of Optics and Applied Optics Pub Date : 2014-01-01 DOI: 10.3788/co.20140706.0931

刘春旭 Liu Chun-xu

引用次数: 0

Structural realization of small zoom camera 小型变焦相机的结构实现

Chinese Journal of Optics and Applied Optics Pub Date : 2014-01-01 DOI: 10.3788/CO.20140701.0169

苗健宇 Miao Jian-yu, 张立平 Zhang Li-ping, 翟岩 Zhai Yan, 梅. M. Gui

引用次数: 2

Frequency domain filtering for phase fringe patterns of digital speckle pattern interferometry 数字散斑干涉中相位条纹的频域滤波

Chinese Journal of Optics and Applied Optics Pub Date : 2014-01-01 DOI: 10.3788/CO.20140703.0389

王永红 Wang Yong-hong, 李骏睿 Li Jun-rui, 孙剑飞 Sun Jian-fei, 刘佩 Liu Pei, 杨连祥 Yang Lian-xiang

{"title":"Frequency domain filtering for phase fringe patterns of digital speckle pattern interferometry","authors":"王永红 Wang Yong-hong, 李骏睿 Li Jun-rui, 孙剑飞 Sun Jian-fei, 刘佩 Liu Pei, 杨连祥 Yang Lian-xiang","doi":"10.3788/CO.20140703.0389","DOIUrl":"https://doi.org/10.3788/CO.20140703.0389","url":null,"abstract":"In order to solve the problem of serious influence of much noise in the phase fringe patterns of digital speckle pattern interferometry on the result and accuracy of phase unwrapping,an effective method of stripe sine / cosine decomposition combined with frequency domain low-pass filtering is introduced in this paper,and the high precision filter of phase fringe patterns of digital speckle pattern interferometry is realized. Basic idea of this method is that phase fringe patterns is mapped into two patterns by the sine / cosine function before the phase image filter processing,and then is synthesized into phase fringe patterns through frequency domain filter. This decomposition frequency domain filtering method can retention phase jump information effectively when filtering. Experimental results show that compared with the traditional image noise reduction method,this method can filter out the speckle noise in images better on the basis of reserving \"rush\"image information,and it is simple and effective,which solves the problem of loss from 10% to 40% for phase fringe patterns gray level information when traditional filtering methods are used in stripe phase fringe patterns.","PeriodicalId":10133,"journal":{"name":"Chinese Journal of Optics and Applied Optics","volume":"10 1","pages":"389-395"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72667626","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: 4

Development and application of beryllium mirrors in optical systems 光学系统中铍反射镜的研制与应用

Chinese Journal of Optics and Applied Optics Pub Date : 2014-01-01 DOI: 10.3788/CO.20140705.0749

石. S. Lei, 许永森 Xu Yong-sen, 刘福贺 Liu Fu-he

引用次数: 2

Retinal correction imaging system based on liquid crystal adaptive optics 基于液晶自适应光学的视网膜校正成像系统

Chinese Journal of Optics and Applied Optics Pub Date : 2014-01-01 DOI: 10.3788/CO.20140701.0098

郑贤良 Zheng Xian-liang, 刘瑞雪 Liu Rui-xue, 夏明亮 Xia Mingliang, 曹召良 Cao Zhao-liang, 宣. X. Li

{"title":"Retinal correction imaging system based on liquid crystal adaptive optics","authors":"郑贤良 Zheng Xian-liang, 刘瑞雪 Liu Rui-xue, 夏明亮 Xia Mingliang, 曹召良 Cao Zhao-liang, 宣. X. Li","doi":"10.3788/CO.20140701.0098","DOIUrl":"https://doi.org/10.3788/CO.20140701.0098","url":null,"abstract":"In order to realize high resolution retinal imaging,the technique of Liquid Crystal Adaptive Optics( LC-AO) and its utilize in retinal imaging is under investigation. Problems are settled in the research such as energy loss by polarization,limitation on field of view( FOV) and universality of LC-AO system in retinal imaging. Open-loop adaptive optics system is introduced to avoid the energy loss by polarization in closed-loop system. View field of imaging system is expanded by adhibition of an alterable diaphragm. Exposure ratio is reduced by a pulsed light source. Illumination is polarized to increase energy efficiency. Trial lens and dynamic,advanced target at infinite are used to increase the stability of pupil and reduce the impact of individual differences on human-eyes. Definition and contrast of images after correction are remarkably increased. FOV is enhanced from 200 μm to 500 μm. Exposure ratio is reduced to 1 /2 ~ 1 /3. High definition images are taken from samples with low resolution before. Most problems of LC-AO system for high resolution retinal imaging are settled.","PeriodicalId":10133,"journal":{"name":"Chinese Journal of Optics and Applied Optics","volume":"73 1","pages":"98-104"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73901009","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

Research progress in signal demodulation technology of fiber Bragg grating sensors 光纤光栅传感器信号解调技术的研究进展

Chinese Journal of Optics and Applied Optics Pub Date : 2014-01-01 DOI: 10.3788/CO.20140704.0519

吴晶 Wu Jing, 吴晗平 Wu Han-Ping, 黄俊斌 Huang Jun-bin, 顾宏灿 Gu Hongcan

引用次数: 9

Object tracking method based on improved particle swarm optimization 基于改进粒子群优化的目标跟踪方法

Chinese Journal of Optics and Applied Optics Pub Date : 2014-01-01 DOI: 10.3788/CO.20140705.0759

郭巳秋 Guo Si-qiu, 许廷发 Xu Ting-fa, 王洪庆 Wang Hong-qing, 张一舟 Zhang Yi-zhou, 申子宜 Shen Zi-yi

{"title":"Object tracking method based on improved particle swarm optimization","authors":"郭巳秋 Guo Si-qiu, 许廷发 Xu Ting-fa, 王洪庆 Wang Hong-qing, 张一舟 Zhang Yi-zhou, 申子宜 Shen Zi-yi","doi":"10.3788/CO.20140705.0759","DOIUrl":"https://doi.org/10.3788/CO.20140705.0759","url":null,"abstract":"To overcome the limitations of inertia weight adjustment mechanism when the particle swarm optimization algorithm is applied to object tracking,an improved particle swarm optimization object tracking algorithm is proposed. Firstly,the object and the parameters in particle swarm optimization algorithm are initialized. Secondly,the inertia weight adjustment mechanism is improved by using the evolution rate of particle,and the inertia weight is achieved by taking the conditions of different particles in each generation into consideration. Then the speed,the position,the individual optimum and the global optimum of the particles are updated simultaneously while the next iteration is proceeding. Finally,the area which has the largest similarity function value is defined as the object by comparing the fitness value of each particle with the others. Experimental results indicate that the method reduces the iterations to obtain the same fitness value,and improves the operation efficiency by 42. 9% in comparison with the particle swarm optimization object tracking method which uses self-adapted inertia weight adjustment mechanism. The accurate positioning of the object is a-chieved in the case of the similarity function presenting \"multimodal\",and the method is well adapted to the situation when partial occlusion occurs in object tracking.","PeriodicalId":10133,"journal":{"name":"Chinese Journal of Optics and Applied Optics","volume":"7 1","pages":"759-767"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80110794","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