Co-ordinate-measuring instrument
AssigneeWerth Messtechnik GmbH
InventorRalf Christoph
Life of this patent
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Abstract
A co-ordinate-measuring instrument is provided with a translumination device which includes at least one illumination body and an image processing sensor system which is provided with a lens measuring along an optical axis. In order to perform high-accuracy measurement without the necessity of placing and removing the illumination body and the sensor image processing system, the illumination body is constructed in such a way that it emits diffused light and a filter which is embodied, for example in the form of a comb, provided with through holes and arranged between the illumination body and a measured object is transparent for beams forming with the axis an angle which is less than a defined limiting angle α.
Claims10
Coordinate measuring device with a backlighting arrangement for measuring an object (10), comprising at least one illumination element (14) as-well as an image processing sensor unit (12) comprising a lens measuring along an optical axis (30), wherein the at least one illumination element (14) is constructed such that it emits diffuse radiation and in that a filter (16) with channel-like openings (32, 34) is arranged between the illumination element (14) and the object (10), the openings extending parallel to the optical axis (30) and allowing rays smaller than a defined angle α in relation to the optical axis (30) to pass through.
Dependencies are inferred from the claim text.