Compact device for anamorphically imaging the surface of objects using a reflecting prism

摘要

The invention concerns a device for the graphical reproduction of the surface of objects, in which additional prisms are placed in the path of the detection beam between a scanning prism and an optoelectric sensor. Such optical devices are particularly suited for taking fingerprints. At least one of the additional prisms located in the path of the detection beam is designed as a reflecting prism, which has an incoming beam surface and an exiting beam surface that can be located together on a prism surface, and a reflective back area onto which the incoming light falls inside the prism.