Optical system for inspecting surfaces projects a structure for a front surface of an almost cylindrical object onto a sensor by means of a first lens, an aperture diaphragm and a second lens.

摘要

A structure for a front surface (b-b) of an almost cylindrical object (7) can be projected (b'-b') onto a sensor (5) by means of a first lens (1), an aperture diaphragm (3) and a second lens (2). The structure of the surface area (a-a) of the object that protrudes into a center hole of a cone mirror (6) can be detected and projected likewise onto the sensor by means of the first lens, the aperture diaphragm and the second lens.