Patent · US Active

Method for determining the refractive power of a transparent object, and corresponding device

US9797833B2 · kind B2 · utility

3Cited by

7References

15Claims

0Family size

Assignee

ISRA SURFACE VISION GMBH · DE

Inventor

Paul Weigt · Bochum, DE

Key dates

Filing date	May 27, 2014
Grant date	Oct 24, 2017
Priority date	—
Expiry date	Nov 21, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01N2201/12
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for determining a refractive power of a large-surface-area transparent object, such as a windshield, a visual aid, a cockpit glazing, a helmet visor, or the like, includes detecting a first imaging of a first line grating through the transparent object at at least one predetermined point of the object using a camera and determining a line spacing of the first imaging, the rotation of the lines relative to the first line grating or both through use of a computing unit on the basis of the first imaging at the at least one specified point and using the line spacing or rotation of lines to determine the refractive power at the at least one predetermined point of the transparent object.

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