Device for the contactless detection of a contour of a specimen, in particular a motor vehicle body

摘要

A specimen (13) which is to be measured is arranged between the beam projector (1) and the sensor region (1), which are arranged on the same axis, on the one hand and a retroreflecting projection surface (11) on the other hand. This specimen (13) together with the projector (1) and sensor arrangement (4) can be moved relatively transverse to the access (9). In order to avoid the generation of defective positioning signals by reflection of the light beam on the specimen (13), a positioning signal is generated only if the specimen assumes a relative position (13) such that it touches the centroid (15) (Fig. 1). <IMAGE>