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:
Oct. 25, 2016
Filed:
Mar. 20, 2013
Sick Ag, Waldkirch, DE;
Joachim Kramer, Waldkirch, DE;
SICK AG, Waldkirch, DE;
Abstract
An optoelectronic sensor () has a circumferential front screen () comprising a curvature both in a circumferential direction and in a transverse height, thus focusing light reflected at the inside of the front screen (). Test light passes from a test light transmitter (-) through the front screen () to a reflector (-) and subsequently onto a test light receiver (-). A decreasing light transmissivity of the front screen () is detected based on a decrease of a signal generated by the test light in the test light receiver (-). The test light receiver (-) is arranged on a same side of the front screen () as the reflector (-) such that the test light path (-) leads from the reflector (-) via reflection on the inside of the front screen () to the test light receiver (-).