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:
Jul. 03, 1990
Filed:
Mar. 18, 1988
Applicant:
Inventor:
Klaus Weber, Konigsbronn, DE;
Assignee:
Erwin Sick GmbH Optik-Elektronik, Waldkirch, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
356429 ; 250572 ; 356431 ;
Abstract
An optical web monitoring device is described for which a directed illumination is realized by means of a mirror strip which fully illuminates the pupil of the camera objective of a diode row camera with the image of the illuminating pupil. All contrasting methods can thus be used also for the finding of surface faults in running webs. Several cameras or one camera with pupil division and two diode rows can be simultaneously illuminated using one illuminating device.
Weber, Klaus. (1990). Optical web monitoring device with row cameras with directed illumination (U.S. Patent No. 4938601). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4938601
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