DEVICE FOR SHADING EVALUATION FOR SCANNER PROVIDED WITH CONFOCAL OPTICAL SYSTEM, SHADING CORRECTION DATA GENERATION METHOD AND SHADING CORRECTION METHOD IN SCANNER PROVIDED WITH CONFOCAL OPTICAL SYSTEM USING DEVICE FOR SHADING EVALUATION AND SCANNER PROVIDED WITH CONFOCAL OPTICAL SYSTEM CAPABLE OF CORRECTING SHADING

摘要

PROBLEM TO BE SOLVED: To provide a device for shading evaluation for a scanner provided with a confocal optical system capable of accurately evaluating shading. SOLUTION: In this device 70 for the shading evaluation for the scanner provided with the confocal optical system, the mask 72 of a chrome film is provided on a color glass filter 71 workable keeping optical planarity, having the property of emitting fluorescence at the time of being irradiated with laser beams, and thus many slits 73 from which the color glass filter is exposed are regularly formed.