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《Acta Photonica Sinica》 2012-03
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An Opt-electronic Method for Inspecting Foreign Particles in Injections

WANG Fu-yu,HUANG Mei-zhen,ZENG Tao,GUAN Xiang-yu,SUN Xiao-xiao,WANG Yang(Optical Science & Engineering Research Center,Department of Physics,Shanghai Jiao Tong University, Shanghai 200240,China)  
In the production process of the injection,foreign particles are probably interfused into the injections,so the injections must be inspected before leaving the factory.An opt-electronic method is proposed based on light-blocking theory for foreign particles detected in injections,and the principle of this inspecting method is introduced.Compared with the conventional manual inspection method,the preliminary experimental results show that the new method has a satisfied conformance rate of 96.30% in the case of static offline detection.In order to improve the inspection effect,a method of dual-light-path is also proposed to avoid the foreign particles miss inspection in case of the track testing time is too short or the testing area is too small.
【Fund】: 上海市联盟计划项目(No.LM201169)资助
【CateGory Index】: TN247
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