Pub Date : 2014-01-01DOI: 10.3788/GXJS20144003.0195
马. M. Jing, 黄蓉 Huang Rong
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.
{"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}
Pub Date : 2014-01-01DOI: 10.3788/GXJS20144003.0205
甘亮勤 Gan Liangqin, 曾胜财 Zeng Shengcai, 杨上供 Yang Shanggong
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.
{"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}
Pub Date : 2014-01-01DOI: 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
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.
{"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}
Pub Date : 2014-01-01DOI: 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
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.
{"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}
Pub Date : 2014-01-01DOI: 10.3788/GXJS20144002.0140
于. Y. Fei, 林喆 Lin Zhe, 赵跃进 Zhao Yuejin, 董立泉 Dong Liquan, 康晓军 Kang Xiaojun
A novel searching method of matching block based on the concurrent and multi-start algorithm is presented to improve the search speed,accuracy and robustness in the fast operation of the block-matching motion estimation.The method of choosing starting points evenly is presented based on the characteristic of the block matching search,and the adaptive conditions and adaptive schedule is established based on the searching region.In the processing of iteration,the new method can not only adapt to the solution that lead the objective to the correct direction,but also adapt to the solution that have a little offset comparing with the objective.Therefore the concurrent and multi-start algorithm can be easy to keep from the trap of local minima effectively.The image processing system based on the DSP chip of TMS320C6415is used to make the experiment for the video with shaking images.The results of experiment show that,when the television broadcasting system of camera is PAL,the image resolution of video is 720×576pixels and the shaking motion between the adjacent images is in the scope of±40pixels,the computational complexity of block matching parameters based on the novel method is not more than one eighth of the computational complexity based on the full-search(FS)method,and the searching accuracy of the novel method is much greater than the other traditional fast searching method.The method can improve the searching speed and achieve the high searching accuracy at the same time.
{"title":"A fast motion estimation searching method based on the multi-start and concurrent algorithm","authors":"于. Y. Fei, 林喆 Lin Zhe, 赵跃进 Zhao Yuejin, 董立泉 Dong Liquan, 康晓军 Kang Xiaojun","doi":"10.3788/GXJS20144002.0140","DOIUrl":"https://doi.org/10.3788/GXJS20144002.0140","url":null,"abstract":"A novel searching method of matching block based on the concurrent and multi-start algorithm is presented to improve the search speed,accuracy and robustness in the fast operation of the block-matching motion estimation.The method of choosing starting points evenly is presented based on the characteristic of the block matching search,and the adaptive conditions and adaptive schedule is established based on the searching region.In the processing of iteration,the new method can not only adapt to the solution that lead the objective to the correct direction,but also adapt to the solution that have a little offset comparing with the objective.Therefore the concurrent and multi-start algorithm can be easy to keep from the trap of local minima effectively.The image processing system based on the DSP chip of TMS320C6415is used to make the experiment for the video with shaking images.The results of experiment show that,when the television broadcasting system of camera is PAL,the image resolution of video is 720×576pixels and the shaking motion between the adjacent images is in the scope of±40pixels,the computational complexity of block matching parameters based on the novel method is not more than one eighth of the computational complexity based on the full-search(FS)method,and the searching accuracy of the novel method is much greater than the other traditional fast searching method.The method can improve the searching speed and achieve the high searching accuracy at the same time.","PeriodicalId":35591,"journal":{"name":"光学技术","volume":"40 1","pages":"140-144"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70262631","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}
Pub Date : 2014-01-01DOI: 10.3788/GXJS20144004.0327
高宇飞 Gao Yufei, 刘. L. Chao, 张. Z. Yong
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.
{"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}
Pub Date : 2014-01-01DOI: 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
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.
{"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}
Pub Date : 2014-01-01DOI: 10.3788/GXJS20144001.0058
徐树振 Xu Shuzhen, 田蕾 Tian Lei, 赵成均 Zhao Chengjun, 于亚红 Yu Yahong, 王. W. Tao, 李英娜 Li Yingna, 赵振刚 Zhao Zhengang, 李川 Li Chuan
Cross arm withstands more force in the tower of power system than other components,it's easy to cause the damage of the cross arm by the excessive weight of line ice,wave,or other physical factors.A model of power transmission tower with a duckbill-type cross arm is developed,four fiber Bragg gratings are mounted on the upper surface and the lower surface of main beam of duckbill-type cross arm with epoxy resin.The strain of main beams are induced by the stress of loading,which causes the wavelength shift of fiber Bragg gratings.When loading and unloading on the ends of duckbill-type cross arm,the experiment indicates that load sensitivities of four measuring gratings are respectively 6pm/ kg,2pm/kg,3pm/kg,2pm/kg,the repeatability errors are 0.7%FS,4.1%FS,1.9%FS,3.0%FS.
{"title":"Research of FBG-based duckbill-type cross arms by the strain","authors":"徐树振 Xu Shuzhen, 田蕾 Tian Lei, 赵成均 Zhao Chengjun, 于亚红 Yu Yahong, 王. W. Tao, 李英娜 Li Yingna, 赵振刚 Zhao Zhengang, 李川 Li Chuan","doi":"10.3788/GXJS20144001.0058","DOIUrl":"https://doi.org/10.3788/GXJS20144001.0058","url":null,"abstract":"Cross arm withstands more force in the tower of power system than other components,it's easy to cause the damage of the cross arm by the excessive weight of line ice,wave,or other physical factors.A model of power transmission tower with a duckbill-type cross arm is developed,four fiber Bragg gratings are mounted on the upper surface and the lower surface of main beam of duckbill-type cross arm with epoxy resin.The strain of main beams are induced by the stress of loading,which causes the wavelength shift of fiber Bragg gratings.When loading and unloading on the ends of duckbill-type cross arm,the experiment indicates that load sensitivities of four measuring gratings are respectively 6pm/ kg,2pm/kg,3pm/kg,2pm/kg,the repeatability errors are 0.7%FS,4.1%FS,1.9%FS,3.0%FS.","PeriodicalId":35591,"journal":{"name":"光学技术","volume":"40 1","pages":"58-61"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70262542","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}
Pub Date : 2014-01-01DOI: 10.3788/GXJS20144002.0172
陈. C. Ying, 刘腾 Liu Teng, 卢波 Lu Bo, 范卉青 Fan Huiqing
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.
{"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}
Pub Date : 2014-01-01DOI: 10.3788/GXJS20144004.0371
缪斌鹰 Miao Binying, 唐正宁 Tang Zhengning
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.
{"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}
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