Lighting system, optical measuring device and method for metrological measurement of workpieces

摘要

The invention concerns a 26c lighting system for optical measuring devices 10 for metrological measurement of workpieces 14 comprising a wide-band light source 3 and in light direction from light source 3 to the workpiece 14 to be measured at least one first transverse converter 2a for the lighting and at least one first chromatic gradient filters 1a for the illumination, with the lighting system 26c in the direction of light from the light source 3 to the workpiece 14 to be measured after at least one chromatic gradient filters 1a at least one more,includes a second cross-sectional converter 2b for the illuminating lamp. The invention also concerns an optical measuring device 10 for the metrological measurement of workpieces 14 with a above mentioned lighting system 26c, with the optical measuring device 10 having a CMOS sensor operated in s/w mode, thus avoiding colour filtering, and a method for metrological measurement of workpieces 14 by means of an appropriate optical measuring device 10, the procedure having the following steps: positioning of workpiece 14 within the measuring range of the optical measuring device 10;illumination of the workpiece by means of the inventive lighting system 26c in the form of illumination and/or illumination, the first chromatic flow filter 1a being in a first lateral position relative to the optical axis of the lighting system 26c; Activate recording of the workpiece using the CMOS sensor of the optical measuring device 10; evaluate the recording with respect to a contrast goods criterion; repeat the previous steps "illuminate the workpiece";"Activities of an uptake" and "Evaluation of uptake" in another lateral position of the first chromatic flow filter 1a until the contrast goods criterion exceeds a desired threshold value or a predefined threshold value; storage of the control data of the contrast goods criterion for well-located lateral position of the first chromatic flow filter 1a together with information and/or data of workpiece 14 in a process setup file.