Patent ID: 9453718
Filing Date: 2016-09-27
CPC Classification: G01B,G02B

Claim Text:
1. An illumination module for a coordinate measuring machine for measuring a workpiece by means of an optical sensor having a measurement zone around a sensor axis, wherein the illumination module comprises a main body having a sensor side and a workpiece side, wherein the illumination module further comprises on the main body at least one illumination arrangement including at least one optical element for illuminating the workpiece, and wherein the at least one illumination arrangement has an emission characteristic with an emission angle and a light intensity profile across the emission angle, wherein the light intensity profile of the at least one illumination arrangement across the emission angle is asymmetrical, wherein the emission characteristic of each illumination arrangement is modulated by said at least one optical element so that the emission characteristic has a first illuminated partial region, a second illuminated partial region and a substantially non-illuminated shadow region between the first partial region and the second partial region, and wherein the first illuminated partial region of the at least one illumination arrangement coincides with said measurement zone in a first working region along said sensor axis, wherein the second illuminated partial region of the at least one illumination arrangement coincides with said measurement zone in a second working region along said sensor axis, and wherein the shadow region of the at least one illumination arrangement coincides with said measurement zone in a non-working region along said sensor axis that separates said second working region from the first working region.