Opto-electrical sensor arrangement

US7936450B2 · kind B2 · utility

Assignee

• SICK AG · DE

Inventors

• Ingolf Hoersch · Emmendingen, DE
• Felix Lang · Schliengen, DE

Key dates

• Filing date: Aug 30, 2007
• Grant date: May 3, 2011
• Expiry date: Aug 16, 2028

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S7/499
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to an opto-electronic sensor arrangement (10) with an optical transmitter (20) and an optical receiver (30), such that the optical transmitter (20) and the optical receiver (30) are so positioned that they either form an optical scanner designed as an optical scanner with background gating or form a reflecting light barrier in conjunction with a reflector (60), and such that the optical receiver (30) has a detector (32) in which successive images of the light beam (30a) reflected from the object (50) are detected and are compared in an evaluating unit (36), and the outcome of the comparison provides information on the movement of the object (50) relative to the optical receiver (30), so that the detector exercises a movement function.