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:
Jun. 02, 2020
Filed:
Sep. 01, 2017
Applicant:
Schott Ag, Mainz, DE;
Inventors:
Hans Wiedenmann, Waldsassen, DE;
André Witzmann, Waldershof, DE;
Assignee:
SCHOTT AG, Mainz, DE;
Primary Examiner:
Int. Cl.
CPC ...
G02B 23/24 (2006.01); G01B 11/24 (2006.01); G01B 11/12 (2006.01); G02B 27/28 (2006.01); G02B 23/04 (2006.01); G02B 23/02 (2006.01); G01N 21/954 (2006.01);
U.S. Cl.
CPC ...
G02B 23/2461 (2013.01); G01B 11/12 (2013.01); G01B 11/24 (2013.01); G01N 21/954 (2013.01); G02B 23/02 (2013.01); G02B 23/04 (2013.01); G02B 27/288 (2013.01); G01N 2021/9548 (2013.01); G01N 2201/0683 (2013.01);
Abstract
An apparatus and to a method for imaging the inner contour of a tube are provided. The method includes radiating light having a first polarization direction onto a first tube end in the longitudinal direction of the tube; reflecting the light downstream of a second tube end, wherein the light that is returning through the tube due to the reflection has a second polarization direction that is orthogonal with respect to the first polarization direction; and filtering the returning light with a polarization filter to transmit only the returning light.