Measuring apparatus and method for non-contact detection of three-dimensional shape of groove extending around eyeglass frame

摘要

PCT No. PCT/DE98/00713 Sec. 371 Date Dec. 22, 1999 Sec. 102(e) Date Dec. 22, 1999 PCT Filed Mar. 10, 1998 PCT Pub. No. WO98/45664 PCT Pub. Date Oct. 15, 1998What is described here is a measuring system for the non-contacting detection of the three-dimensional shape of a groove peripherally extending in a spectacle frame, comprising a light source directing its light beam onto the groove or having its beam deflected thereon by means of an optical deflector system, an optical imaging system which projects the light reflected at the groove onto an optical detector unit and which is disposed in a centered position relative to the groove to be measured on the spectacle frame, a holding means supporting the spectacle frame, which is supported for rotation relative to the light source, the detector system and the optical imaging system about a centering axis of a surface inscribed by the peripheral groove of the spectacle frame, as well as an evaluation unit for determining the three-dimensional shape of the groove, which operates in correspondence with the triangulation principle. Moreover, an appertaining method is proposed.