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:
Nov. 07, 2017
Filed:
Apr. 07, 2016
Sick Ag, Waldkirch, DE;
Joachim Kramer, Waldkirch, DE;
Michael Engler, Waldkirch, DE;
Markus Hammes, Waldkirch, DE;
Christof J. Meyer, Waldkirch, DE;
SICK AG, Waldkirch, DE;
Abstract
An optoelectronic sensor () for detecting objects in a monitored zone () is provided which has the following: a front screen (); a light transmitter () for transmitting a light beam (); a movable deflection unit () for the periodic sampling of the monitored zone () by the light beam (); a light receiver () for generating a received signal from the light beam () remitted by the objects; at least one test light transmitter (); at least one test light transmitter (), at least one test light receiver () and at least one test light reflector () which span a test light path (-) through the front screen (); and an evaluation unit () which is configured to acquire pieces of information on the objects in the monitored zone () from the received signal and to recognize an impaired light permeability of the front screen () from a test light signal which the test light receiver () generates from test light which is transmitted from the test light transmitter () and which is reflected at the test light reflector (). In this respect, the test light reflector () is arranged such that it moves along with the deflection unit ().