Patent · US Expired

Light barrier or light grid with alignment mechanism

US7087884B2 · kind B2 · utility

1Cited by

3References

9Claims

0Family size

Assignee

SICK AG · DE

Inventors

Guenter Fetzer · Gundelfingen, DE
Daniel Rieger · Olsberg, DE
Martin Wuestefeld · Waldkirch, DE

Key dates

Filing date	Feb 16, 2005
Grant date	Aug 8, 2006
Priority date	—
Expiry date	Feb 16, 2025

Classification

Technology area (CPC G)Physics
CPC primaryG01V8/20
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A light barrier or light grid which has at least one light emitter arranged in a first housing and at least one associated light receiver arranged in a second housing. At least one emitter of visible alignment light installed in the first or the second housing generates one or more alignment light beams which is used to geometrically orient the light emitter relative to the opposite light receiver. For optically aligning the two housings, at least one alignment mechanism is present in the housing which receives the alignment beam. The alignment mechanism has at least one surface which optically deflects the alignment beam towards a target plane.

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