谈自制面光源装置拍摄光滑弧面客体上的指纹

Handmade Light Source Device in Shooting the Fingerprints on the Smooth Arc Object

在刑事照相工作中,人们常遇到一些光滑弧面客体(如不锈钢管、水杯)上的指纹,这类指纹在拍照时由于受到客体表面反射光的干扰,易形成光斑或光点,虽然使用了多种光源和不同的打光方法照明,但照片的效果仍不理想。为解决这一难题,笔者进行了有关的探讨,设计了一种简易的面光源装置,获得了良好的效果。

In criminal photographic work, we often encounter some fingerprints on the smooth arc objects （ such as stainless steel, glass＇ ） , because of the interference of light reflected by the surface of the object, the photo forms a beam spot. Althdugh the use of a variety of light source and different lighting methods, the effect is not satisfied. The author designed a kind of light source device obtained good results.