US 11,698,442 B2
Optoelectronic sensor and method for detecting objects
Hartmut Gimpel, Waldkirch (DE); and Matthias Jägel, Waldkirch (DE)
Assigned to SICK AG, Waldkirch (DE)
Filed by SICK AG, Waldkirch (DE)
Filed on Oct. 15, 2019, as Appl. No. 16/601,965.
Claims priority of application No. 102018125826.7 (DE), filed on Oct. 18, 2018.
Prior Publication US 2020/0124708 A1, Apr. 23, 2020
Int. Cl. G01S 7/481 (2006.01); G01S 17/10 (2020.01)
CPC G01S 7/4815 (2013.01) [G01S 7/4816 (2013.01); G01S 7/4817 (2013.01); G01S 17/10 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An optoelectronic sensor for detecting objects in a monitored zone, the optoelectronic sensor comprising:
at least one light transmitter for transmitting a plurality of mutually separated light beams starting from a respective one transmission point;
a transmission optics for the transmitted light beams;
at least one light receiver for generating a respective received signal from the remitted light beams reflected from the objects and incident at a respective reception point;
a reception optics for the remitted light beams; and
an evaluation unit for acquiring information on the objects from the received signals,
wherein at least one of the reception optics and the transmission optics is a two-lens objective for an annular image field with an image field angle α that has a first lens and a second lens, with the first lens being configured such that light beams of every single transmission point and/or reception point with an image field angle α only impinge on half of the second lens.