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:
Aug. 18, 2009
Filed:
Dec. 22, 2006
Joachim Gaessler, Donaueschingen, DE;
Christian Konz, Ohningen, DE;
Harald Richter, Constance, DE;
Intelligente Optische Sensoren Und Systeme GmbH, Radolfzell, DE;
Abstract
The invention generally relates to a compact, inexpensive-to-manufacture, device of few components for optically inspecting a surface and a method for same employing the device. The section of the surface to be investigated is illuminated by a semitransparent mirror and a field lens, employing a telecentric beam path, and at least part of the light reflected or scattered by the surface is imaged onto the entrance pupil of the optics of an electronic camera by the field lens, via the semitransparent mirror. All optical and electronic components, along with a light- and dust-tight housing, are carried on a specially configured mounting block such that they are self-aligning. The method for inspecting a surface involves automatically recording a series of images of the surface under various types of illumination situations. Those images are assembled into an image of the entire section of the surface to be investigated and analyzed using known image-processing methods.