Calibration arrangement for sensitive detector positioning error in position

The utility model provides a calibration arrangement for sensitive detector positioning error in position, including electronic control translation stage, unipolar precise rotating platform, be used for for PSD radiation beam's semiconductor laser and be used for centre gripping semiconductor laser's laser holder, PSD has been placed on being fixed in the electronic control translation stage to the unipolar precise rotating platform on the unipolar precise rotating platform. It is fixed with the electronic control translation stage that the unipolar precise rotating platform passes through the bolt. The device is can very easy adjustment PSD photosensitive surface normal line perpendicular with automatically controlled displacement table's moving direction, has avoided because of the rotatory test error of introducing of coordinate system, has improved PSD positioning error's measuring accuracy.