Patent ID: 9739600
Date: 2017-08-22
CPC Classifications: G01B,G01J,G01N,G02B,H01L

Claim:
1. A confocal chromatic device for inspecting the surface of an object, comprising: a chromatic lens with an extended axial chromatism; a light source for illuminating the object through the chromatic lens with a plurality of optical wavelengths being focused at different axial distances; a plurality of optical measurement channels with collection apertures arranged for collecting the light reflected by the object through the chromatic lens at a plurality of measurement points; and the plurality of optical measurement channels comprise optical measurement channels with an intensity detector for measuring a total intensity of the collected light at a measurement point, and provide, by scanning the surface of the object, an intensity 2D image information of the surface, said intensity detector being implemented so as to image the surface of said object with a high lateral resolution over an extended depth of focus.