Device for optical testing of examination area of reflective or diffused reflective surface of object, comprises field mirror which has concave mirror surface with focal length of two times maximum extension of study area

摘要

The device comprises a field mirror (4) which has a concave mirror surface with a focal length of two times the maximum extension of a study area (3). The field mirror is aligned to a light beam axis (5), such that a reflection angle (9) is provided as 120 degrees. An optical path is reflected between the field mirror and the focal planes (10,20) at a plane mirror (40).