Optical scanning device for flat objects, has lighting device movable separately from sensor linearly parallel to object plane slightly spaced from object surface to light up each line-shaped object region

摘要

The device includes a lighting device (5) for lighting the object and is guided separate from the sensor movable linearly parallel to the object plane at a slight distance from the object surface in order to light each line-shaped object region which is to be scanned. The lighting device during scanning is movable parallel to the sensor movement synchronized over the object (2) so that the region of the object just detected by the lens and copied on the sensor (11) is illuminated. The lens and sensor are mounted on a common vertically movable housing above the object with the distance between lens and sensor variable through an extension (8).