LICHTELEKTRISCHE POSITIONSMESSEINRICHTUNG.

摘要

The optical position measuring system, for detecting the relative portion of two objects, esp. a workpiece and machine tool uses a scale carrier and a scanning head providing signals representing the detected scale markings, fed to a stationary evaluation device. The scanning head has a movable section and a stationary section respectively attached to the movable component and the stationary component, the latter supporting an illumination device and at least one photodetector and the former supporting cooperating optical elements. Pref. the illumination device uses a laser.