电工胶带是犯罪现场常见的物证,对电工胶带的检验鉴定不仅能为侦查提供方向,还为刑事诉讼提供证据。光学相干层析技术(Optical Coherence Tomography,OCT)是20世纪90年代出现的光学成像检验技术,具有无损、高分辨率、断层成像等特点。利用OCT技术对12种不同品牌、不同颜色的电工胶带进行检验,得到其二维OCT图像以及光学特征参数。结果表明,OCT技术可以有效区分不同的电工胶带。OCT为电工胶带的检验提供了一种新的方法,较传统检验方法,OCT无需对样品进行切片处理,操作便捷,成像速度快,提高了检验人员的效率。

Electrical tape is a common material evidence at the crime scene.The inspection and identification of electrical tape can not only provide direction for investigation,but also provide evidence for criminal proceedings.OCT is an optical imaging inspection technique that appeared in 1990s.which has the characteristics of nondestructive,high-resolution,tomography.12 different brands and different colors of electrical tapes were tested by OCT,and the 2D OCT image and optical characteristic parameters were obtained.The result shows that OCT can effectively distinguish different electrical tapes.OCT provides a new method for the inspection of electrical tapes.Compared with the traditional inspection methods,OCT does not need to pre-treat the samples,easy to operate,imaging fast,and improves the efficiency of inspection.