Apparatus for the recognition of the presence of an object in space

US8059263B2 · kind B2 · utility

Assignee

• SICK AG · DE

Inventors

• Manfred Haberer · Riegel, DE
• Bernd Rothenberger · Gernsbach, DE

Key dates

• Filing date: Jul 8, 2009
• Grant date: Nov 15, 2011
• Expiry date: Jun 18, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S2007/4975
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An apparatus for the recognition an object in space in accordance with the pulsed time-of-flight principle. The apparatus has a pulsed laser and a photoreceiver arrangement which receives the light pulses reflected back from the object present in the space. The apparatus has a first light deflection apparatus which outputs a first angular position signal representative of its instantaneous angular position to the evaluation circuit, wherein the first light deflection apparatus is arranged rotatably or pivotably about a first axis of rotation and is made for the transmission of light pulses following one another at changing angles in a first plane, wherein a second light deflection apparatus is arranged between the first light deflection apparatus. The apparatus outputs a second angular position signal representative of its instantaneous angular position to the evaluation circuit which has a deflection plate which is arranged rotatably or pivotably about a second axis of rotation.