Utilizing the characteristic of reflection prism in automatic polarization compensation in this test system, which realizes spacial veer transmission of polarization-light.

This paper presents a robot detection system,which consists of cleaning unit、driving unit、reflecting prism unit、CCD camera、image monitor、and computer etc.

In order to correct reasonably the image lean, the distortion caused by a reflecting prism with a second parallelism in a collimated beam and the image lean introduced by it were presented.