Patent · US Active

Method and apparatus for imaging the inner contour of a tube

US10670855B2 · kind B2 · utility

0Cited by

2References

22Claims

0Family size

Assignee

Schott AG · DE

Inventors

Hans-Martin Wiedenmann · Stuttgart, DE
André Witzmann · Waldershof, DE

Key dates

Filing date	Sep 1, 2017
Grant date	Jun 2, 2020
Priority date	—
Expiry date	Dec 27, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG01N2201/0683
WIPO fieldMeasurement
WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.