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:
Jun. 07, 2022
Filed:
Nov. 20, 2018
Sick Ag, Waldkirch, DE;
Sascha Steinkogler, Waldkirch, DE;
Florian Schneider, Waldkirch, DE;
Helmut Weber, Waldkirch, DE;
Stefan Seitz, Waldkirch, DE;
Martin Högy, Waldkirch, DE;
SICK AG, Waldkirch, DE;
Abstract
A polygon scanner () for detecting objects () in a monitored zone () is provided having a light transmitter (); having a light receiver (); having an evaluation unit (); and having a rotatable mirror unit () for a periodic deflection of the light beam () that has a plurality of mirror facets () in order thus to scan an angular section multiple times per rotation of the mirror unit () by a respective mirror facet (), wherein at least some of the mirror facets () have a different curvature from one another. In this respect, at least one of the mirror facets () is configured as a free-form surface whose curvature is adapted to the angle of incidence of the transmitted light beam () on the mirror facet () that varies during the rotation of the mirror unit ().