The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 2013
Filed:
Jun. 28, 2011
Klaus-georg Knupfer, Essingen, DE;
Joachim Reimann, Bad Boll, DE;
Volker Huss, Süssen, DE;
Volker Schöllkopf, Bad Boll, DE;
Klaus-Georg Knupfer, Essingen, DE;
Joachim Reimann, Bad Boll, DE;
Volker Huss, Süssen, DE;
Volker Schöllkopf, Bad Boll, DE;
Carl Zeiss OIM GmbH, Wangen, DE;
Abstract
An apparatus for optically inspecting an at least partially reflecting surface of an object includes first and second transverse carriers () defining respective substantially circular segment-shaped cutouts (). The transverse carriers () are disposed at a longitudinal distance (D) from one another and the longitudinal distance (D) defines a longitudinal direction (). A plurality of longitudinal members are configured to hold the first and second transverse carriers at the longitudinal distance (D). The longitudinal members are arranged at a defined radial distance to the circular segment-shaped cutouts. A translucent diffusing screen is held in the circular segment-shaped cutouts by the transverse carriers to form a tunnel-shaped inspection space. A multiplicity of light sources are arranged outside of the tunnel-shaped inspection space behind the diffusing screen. The light sources are configured to be controlled individually or in small groups to generate variable light-dark patterns on the diffusing screen. A workpiece receptacle is configured for accommodating the object in the tunnel-shaped inspection space. At least one camera is directed into the tunnel-shaped inspection space. An evaluation and control unit is configured to control the light sources and the camera to generate various light-dark patterns on the diffusing screen and to record and evaluate a plurality of images of the object in dependence on the light-dark patterns.