光学显现法在手印痕迹检验中的应用研究  

Research on the Application of Optical Visualization Method in the Fingerprint Trace Inspection

作　　者：夏维忠 李京钊 高毅[3] XIA Wei-zhong;LI Jing-zhao;GAO Yi(Criminal Investigation Brigade,Dongzhou Branch,Fushun Public Security Bureau,Fushun 113000,China;Public Security Bureau of Fanchang County,Wuhu,Wuhu 241200,China;China Criminal Police College,Shenyang 110035,China)

机构地区：[1]抚顺市公安局东洲分局刑侦大队,辽宁抚顺113000 [2]芜湖繁昌县公安局,安徽芜湖241200 [3]中国刑事警察学院,辽宁沈阳110035

出　　处：《工业技术创新》2020年第6期55-59,共5页Industrial Technology Innovation

摘　　要：应用光学显现法对手印显现效果的方法进行比较分析,优选出方便、快捷、无损化的手印痕迹检验方式。采用蓝光灯、多波段光源和紫外观察系统,通过分析连贯性、清晰度、纹线与背景形成的反差等技术指标,对手印遗留于不同客体表面时的显现效果进行评价。研究发现:蓝光灯主要适用于遗留于非渗透性光滑客体和非渗透性半光滑客体上的血手印显现;多波段光源适用范围最广,在磁性荧光粉末刷显后,能够显现大部分客体上的手印;紫外观察系统主要适用于非渗透性光滑客体和非渗透性半光滑客体上的汗液手印显现。研究结论是多波段光源显现痕迹范围最广,且设备携带方便,可在相关领域中优先推广。By applying the optical visualization method,the methods for the fingerprint visualization effect is compared and analyzed to select out a convenient,fast and non-destructive fingerprint trace inspection approach.The blue light lamp,multi-band light source and UV observation system are used to evaluate the visualization effect of fingerprints left on different object surfaces by means of technological indexes including coherence,clarity,contrast between lines and background.The study shows that:the blue light lamp is mainly suitable for the visualization of blood fingerprints left on non-permeable smooth objects and non-permeable semi-smooth objects;the multi-band light source is the most widely used,which can show most of the fingerprints on the objects after brushing with magnetic fluorescent powder;the UV observation system is mainly suitable for the sweat fingerprints on the non-permeable smooth objects and non-permeable semi-smooth objects.The conclusion of study is that the multi-band light source has the widest range of trace visualization,and the equipment is easy to carry,so it can be promoted with priority in related fields.

关 键 词：光学显现法 手印痕迹检验 蓝光灯 多波段光源 紫外观察系统 

分 类 号：DF794.1[政治法律—诉讼法学]