Optoelectronic device for measuring internal dimensions e.g. of injection holes in fuel injection valve for internal combustion engine, has deflection mirror for directing light from source onto detector

摘要

The device has an optoelectronic detector (5) such as a CCD camera, and a light source (10) for illuminating the inside of a hollow, cavity or drill hole (1) to be measured. An evaluation unit has a deflection mirror (4) which deflects the outgoing beam from the light source so that it is deflected onto the optical axis (12) of the detector and projected onto the location to be detected. The reflected light is deflected by the mirror (4) and directed to the detector. The deflection mirror is arranged at the lower end of a holder (13) whose height can be adjusted.