Patent · US Expired

Distance-measuring system with in-range signalling for use with cameras, alarms, and the like

US4345827A · kind A · utility

5Cited by

5References

16Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Otto Stemme · Munich, DE
Peter Lermann · Feldkirchen-Westerham, DE
Istvan Cocron · Munich, DE

Key dates

Filing date	Sep 19, 1980
Grant date	Aug 24, 1982
Priority date	—
Expiry date	Sep 19, 2000

Classification

Technology area (CPC G)Physics
CPC primaryG01S17/08
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A distance measuring system generates an in-range signal when an object is located within a range of focus or a zone of protection, as the case may be. The system utilizes a single infrared transmitter and two receivers in order to determine the position of the object by triangulation.

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