1
Karl Hermann Breyer, Klaus P Koch: Optoelectronic distance sensor with visible pilot beam. Carl Zeiss Stiftung, Walter Ottesen, April 25, 1989: US04825091 (158 worldwide citation)

The invention is directed to a distance sensor operating in accordance with the triangulation principle. The distance sensor has at least one pilot beam source which makes the imaging beam path of the sensor visible. The imaging beam path is inclined with respect to the measuring beam. A second pilo ...


2
Klaus P Koch, Ralf Peter: Method and arrangement for detecting edges and bores of a workpiece with an optical probe head. Carl Zeiss Stiftung, Walter Ottesen, March 1, 1994: US05291270 (16 worldwide citation)

The invention is directed to a method and arrangement for detecting edges and bores on a workpiece with an optical probe head. The optical probe head is guided with constant beam power over the workpiece surface for detecting the edges and bores. In addition to the distance signal of the probe head, ...