NON-CONTACTING OPTICAL PROBE

摘要

A distance measuring device for deriving contour information without contacting the surface being measured and without the use of internal moving parts. The device utilizes an optical system and geometric triangulation techniques to develop electrical output signals which may be used to drive readout displays and numerically controlled machine tools or the like. One embodiment of the device includes a specially configured photo detector which compensates for certain ranging errors encountered in previously known devices. Data processing electronics are provided for a variety of operations and applications. A particular feedback light control system is employed to compensate for variations in reflected light levels.