便携式深紫外280 nm半导体物证探测光源的研制及应用  

Development and Application of Portable Deep Ultraviolet Light Emitting Diode Source for Latent Evidence Detection

作　　者：赵雪珺 邹芸 蔡能斌[2] 黄晓春[2] 刘文斌 Xuejun Zhao;Yun Zou;Nengbin Cai;Xiaochun Huang;Wenbin Liu(Shanghai Key Laboratory of Crime Scene Evidence, Shanghai Research Institute of Criminal Science and Technology, Shanghai;Shanghai Key Laboratory of Crime Scene Evidence, Public Security Bureau, Shanghai Institute of Forensic Science, Shanghai)

机构地区：[1]上海市刑事科学技术研究院,上海市现场物证重点实验室,上海 [2]上海市公安局物证鉴定中心,上海市现场物证重点实验室,上海

出　　处：《光电子》2018年第1期6-13,共8页Optoelectronics

基　　金：国家自然科学基金(61405117);国家重点研发计划(2017YFC0803806);上海市公安局科研项目(2016015)

摘　　要：人的指印各不同且具有唯一性,其吸收峰主要在279 nm左右。针对潜在指印的显现,我们设计了一种基于蓝宝石衬底的便携式深紫外280 nm半导体物证探测光源并应用于痕检。将便携式深紫外280 nm物证探测光源和266 nm激光器用于不同客体背景下指印的显现并进行对比。实验结果表明,便携式深紫外280 nm光源探照潜在指印的显现效果优于266 nm激光器。该光源具有便携、波段优、造价低等优点。此外,通过设计该光源的芯片阵列、控制系统、准直系统、散热系统等,优化了光束质量,为现场物证的发现和提取提供了一种便携式设备,在刑事科学技术领域具有很好的应用前景。A portable deep ultraviolet light emitting diode (LED) source based on sapphire substrate is fa-bricated for evidence detection. Crime scene detection is the prime step of criminal investigation, and is also crucial in solving case. Latent fingerprints of people are unique and the absorption of remnant trace from latent fingerprint is around 279 nm. The visualized effect comparison between the deep ultraviolet source and 266 nm laser source is presented. Experimental results show that the deep ultraviolet source exhibits advantages over 266 nm laser in terms of portability, band match and low cost. Furthermore, quality of the source is optimized by designing each system, and it would be a valuable and portable device for crime scene detection in forensic science.

关 键 词：半导体 发光二极管 深紫外光源 潜在指印 物证探测 

分 类 号：D9[政治法律—法学]