The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 27, 2011
Filed:
Mar. 25, 2010
Uwe Satzky, Hamburg, DE;
Ernst Tabel, Hamburg, DE;
Uwe Satzky, Hamburg, DE;
Ernst Tabel, Hamburg, DE;
Pepperl + Fuchs GmbH, Mannheim, DE;
Abstract
The present invention relates to an optical sensor based on the transit time principle, comprising a light source for the emission of emergent light pulses into an observed region, comprising a rotating device for rotating a beam direction of the emergent light pulses about a rotation axis orientated transverse to the beam direction, and comprising a detector for the detection of light pulses reflected by objects in the observed region, comprising a housing for keeping the sensor interior separate from the environment and including a partitioning screen that is transparent to the emergent light pulses and to the reflected light pulses, comprising a test device for testing the translucence of the partitioning screen, and comprising a control and evaluation unit for controlling the light source, for evaluating the light pulses detected by the detector, and for determining the distance away of an object on the basis of the measured transit time of the light pulses, which control and evaluation unit cooperates with the test device.