New Calibration Scheme for Panoramic Line Scanners

Abstract

In the DLR department of optical information technology exists long experience and practical knowledge in geometrical calibration of opto-elctronical systems especially CCD-line scanners. An approved method is the single pixel illumination by collimated light. The accuracy of this method depends of the precision of the used goniometer and is in the order of 2 arcsec. The disadvantage of this method is the large amount of time. A new method of geometrical calibration is the use of static Diffractive Optical Elements (DOE) in connection with a laser beam equipment. This method can be especially used for 2D-sensor array systems but is not suitable for line scanners. An advanced method using Spatial Light Modulator (SLM) of the Holoeye AG gives the possibility of geometrical calibration of line scanners.