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《Journal of Transcluction Technology》 2005-04
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Design of Optical System for Surface Defect Detection of Steel Strip

HU Liang~1,DUAN Fa-jie~1,DING Ke-qin~2,YE Sheng-hua~11.State Key Lab of Precision Measurement Technology & Instruments,Tianjin University,Tianjin 300072,China;2.National Quality Technology Supervising Station,Beijing 100013,China  
In order to satisfy the requirements of broad width,high speed,high resolution for steel strip inspection product line,optical part of surface defect visual inspection system is optimally designed.A new LED line light source is adopted to obtain a high intensity and uniform illumination,and field of view is partitioned by means of multiple linear CCD sensors parallel imaging.Owing to the combination of bright-field and dark-field receiving image modes,most surface defects of interest are ensured to be effectively detected.Taking the matching of light source,optical lens and linear CCD sensor into account,focal distance,f-number and field angle of lens are calculated and optimally selected to meet the need of high speed and high resolution.The whole optical system design adapts to the demand of online inspection for steel strip surface defect and has already been used in prototype system.
【Fund】: 国家科技部科研院所专项基金项目资助(SY01院所专项-01)
【CateGory Index】: TH74
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【Co-citations】
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1 JING Min ( Department of Instrument, Shaanxi University of Technology, Hanzhong 723000, Shaanxi, China);The Judgment of Lens Image Formation of Objects in Different Positions[J];Journal of Ankang Teachers College;2005-05
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9 ZHANG Jichao~(1,2),DING Yalin~1,ZHANG Hongwen~1(1.Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Science,Changchun 130031;2.Gradute School of the Chinese Academy of Science,Beijing 100039);A Method of Adjustment for Four-Dimensional Optical System[J];;2006-04
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