Patent · US Active

Method and arrangement for measuring blowing structures of a prestressed disc

US9207186B2 · kind B2 · utility

3Cited by

2References

15Claims

0Family size

Assignee

SAINT-GOBAIN GLASS FRANCE · FR

Inventors

Valentin SCHULZ · Niederzier, DE
Lutz Hermanns · Rheydt, DE
Lars Pape · Eschweiler, DE
Stephan Kremers · Heinsberg, DE

Key dates

Filing date	Apr 10, 2013
Grant date	Dec 8, 2015
Priority date	—
Expiry date	Apr 10, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG01N2021/8848
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for measuring blowing structures of a prestressed disc is described. The method has the steps of: (a) irradiating at least one analysis area of the disc with linearly polarized light from a radiation source at an angle of incidence and recording an image at least of the analysis area at an angle of observation using at least one detector, (b) supplying the image to an evaluation unit, and (c) using the evaluation unit to read a brightness profile along an analysis line on the image, to determine the local maxima and the local minima of the brightness profile, and to determine an intensity index by means of the difference between a brightness mean of the local maxima and a brightness mean of the local minima.

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