Patent · US Expired

Method and apparatus for measuring the surface of an object

US4264208A · kind A · utility

27Cited by

7References

22Claims

0Family size

Assignee

SEMPERIT AKTIENGESELLSCHAFT HOLDING · AT

Inventors

Rainer Haberl · Traiskirchen, AT
Kurt Mravlag · Wien, AT

Key dates

Filing date	Feb 9, 1979
Grant date	Apr 28, 1981
Priority date	—
Expiry date	Feb 9, 1999

Classification

Technology area (CPC G)Physics
CPC primaryG01B2210/54
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An optical system focuses a laser beam emanating from a laser onto a surface of an object, such as a circumferential surface of the object to be measured. The light beam is reflected from the object, so as to form a generally focused light spot; the intensity of the light spot, which depends on the distance of the surface from the optical system, is measured, and the measurement results are displayed and/or utilized for controlling the dimensions of the object, if the object is an elongated article, and is continuously produced, generally in a direction transverse to its cross-section.

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