户外直接测试太阳杂散光对相机影响的一种新方法

介绍了一种在户外直接测试太阳杂散光对相机影响的新方法。采用该方法时测试的点源透过率量级可达10-5，而且其造价远低于实验室的点源透过率测试设备，适用于大口径光学系统的杂散光测试。该杂散光测试设备包括顶部可开口的厂房、百叶窗、可调角度工装、挡板、机械手臂及待测相机。把待测相机放置在角度可调的工装上，在遮光罩口上安装百叶窗。测试时，太阳光直射进入相机，通过相机探测器的响应值直接评价太阳杂散光对相机的影响水平及分布。

A New Method for Outdoor Direct Measurement of Effect of Sun Stray Light on Camera

A new method for outdoor direct measurement of the effect of sun stray light on a camera is presented. When the method is used, the lowest threshold of Point Source Transmittance (PST) can be up to 10-5 which is suitable for the stray light test of large aperture optical systems. The cost of the test equipment is far lower than that of a professional laboratory PST test equipment. The stray light test equipment includes a top opening plant, shutters, adjustable angle tooling, a baffle, a mechanical arm and a camera to be tested. The camera to be tested is placed on the adjustable angle tooling and the shutters are placed on the camera hood. During the test, the sun is shining directly into the camera. According to the response of the detector in the camera, the effect level and distribution of sun stray light on the camera can be evaluated.