公开(公告)号：US11353560B2

公开(公告)日：2022-06-07

申请号：US16196567

申请日：2018-11-20

Applicant: SICK AG

Inventor： Sascha Steinkogler ,  Florian Schneider ,  Helmut Weber ,  Stefan Seitz ,  Martin Högy

IPC: G01S7/481 ,  G06K7/10 ,  G02B5/10 ,  G02B26/12 ,  G02B5/09 ,  G01S7/48 ,  G01S7/4865 ,  G01S17/10 ,  G02B7/182 ,  G01S17/42

Abstract: A polygon scanner (10) for detecting objects (24) in a monitored zone (22) is provided having a light transmitter (12); having a light receiver (30); having an evaluation unit (32); and having a rotatable mirror unit (20) for a periodic deflection of the light beam (16) that has a plurality of mirror facets (34) in order thus to scan an angular section multiple times per rotation of the mirror unit (20) by a respective mirror facet (34), wherein at least some of the mirror facets (34) have a different curvature from one another. In this respect, at least one of the mirror facets (34) is configured as a free-form surface whose curvature is adapted to the angle of incidence of the transmitted light beam (16) on the mirror facet (34) that varies during the rotation of the mirror unit (20).

公开(公告)号：US10719108B2

公开(公告)日：2020-07-21

申请号：US15444579

申请日：2017-02-28

Applicant: SICK AG

Inventor： Stefan Seitz

IPC: G06F1/26 ,  H05B1/02 ,  G06K7/14 ,  G06K7/10 ,  G01D3/08

Abstract: A sensor (10) is provided that has at least one sensor functional group (12), a heating device (14, 22), and a heating control (14, 20) to control a heating power (Pheating) of the heating device (14, 22). In this respect, the heating control (20) is configured to adapt the heating power (Pheating) to a power consumption (Psensor) of the sensor functional group (12).

公开(公告)号：US10584998B2

公开(公告)日：2020-03-10

申请号：US15850385

申请日：2017-12-21

Applicant: SICK AG

Inventor： Klaus Clemens ,  Gottfried Hug ,  Stefan Seitz ,  Sebastian Tschuch

IPC: G01J1/44 ,  G01S7/497 ,  G01S7/4863 ,  G01J1/46 ,  G01S17/89 ,  G01S7/481 ,  G01S17/08

Abstract: A light receiver (22) having a plurality of avalanche photodiode elements (24) each configured to be biased with a bias voltage above a breakdown voltage and thus to be operated in a Geiger mode for triggering a Geiger current upon light reception, the light receiver (22) comprising a plurality of bias voltage terminals (40a-c) providing different bias voltages, wherein the avalanche photodiode elements (24) form a plurality of groups (421-42n), and wherein the avalanche photodiode elements (24) of a group (421-42n) are each supplied with a same one of the different bias voltages.

公开(公告)号：US10436638B2

公开(公告)日：2019-10-08

申请号：US15617398

申请日：2017-06-08

Applicant: SICK AG

Inventor： Klaus Clemens ,  Gottfried Hug ,  Stefan Seitz

IPC: G01J1/46 ,  H01L27/144 ,  H01L31/02 ,  G01J1/44

Abstract: A light receiver (50) is provided having a plurality of avalanche photodiode elements (10) that are each biased by a bias above a breakdown voltage and that are thus operated in a Geiger mode to trigger a Geiger current on light reception. The avalanche photodiode elements (10) have a first connector (20, 22, 28a-b) and a second connector (20, 22, 28a-b). A first signal tapping circuit (12) for reading out the avalanche photodiode elements is connected to one of the connectors (20, 22, 28a-b). In this respect, a second signal tapping circuit (12) for reading out the avalanche photodiode elements (10) is connected to the other connector (20, 22, 28a-b).

公开(公告)号：US10018505B2

公开(公告)日：2018-07-10

申请号：US15216086

申请日：2016-07-21

Applicant: SICK AG

Inventor： Klaus Clemens ,  Gottfried Hug ,  Stefan Seitz ,  Sebastian Tschuch

IPC: G01J1/44 ,  G01J1/46 ,  G01S7/486 ,  H01L31/02 ,  H01L27/146 ,  H01L31/107

CPC classification number: G01J1/44 ,  G01J1/46 ,  G01J2001/4466 ,  G01S7/4863 ,  H01L27/14643 ,  H01L31/02005 ,  H01L31/02027 ,  H01L31/107

Abstract: A light receiver (10, 50) having a plurality of avalanche photo diode elements (10, 12a-c) which are biased with a bias voltage greater than a breakthrough voltage and are thus operated in a Geiger mode in order to trigger a Geiger current upon light reception, and having a signal detection circuit (50) for reading out the avalanche photo diode elements (10, 12a-c), wherein the signal detection circuit (50) comprises an active coupling element (52) having an input (54) connected to the avalanche photo diode elements (10, 12a-c) and an output (56), the active coupling element (52) mapping the Geiger current at the input (54) to a measuring current corresponding to the Geiger current in its course and level, wherein the input (54) forms a virtual short-circuit for the Geiger current with respect to a potential (ground, −UBE; Uconst−UBE), and the output (56) is decoupled from the input (54).