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:
May. 27, 2003
Filed:
Sep. 25, 2000
Lasor AG, , DE;
Abstract
The invention relates to a method of determining the optical quality of and detecting faults in flat glass ( ) and other transparent materials, especially in float glass, wherein a video camera ( ) is arranged to monitor an illuminating device ( ) either through the glass ( ) or by observing the reflection thereof, the focus being on the glass ( ) and the sheet, respectively, and the video camera ( ) generates signals in dependence on the quality of the glass ( ) and these signals are evaluated, wherein use is made of at least one illuminating device ( ), comprising a pattern ( ) of adjacent partial portions ( ) alternately different at least in color and/or in intensity, an observation spot of the video camera ( ) picks up the pattern ( ), two video signals U ,U are assigned to the signal of the pattern ( ), and a change of the intensity of the video signals U U is used for evaluating the quality of the glass ( ) and the sheet, respectively.