公开(公告)号：US20220260720A1

公开(公告)日：2022-08-18

申请号：US17671380

申请日：2022-02-14

Applicant: SICK AG

Inventor： Markus HAMMES ,  Wolfram STREPP ,  Jörg SIGMUND

IPC: G01S17/894 ,  G01S17/32

Abstract: A camera is provided for detecting three-dimensional image data from a detection zone that has an illumination unit for transmitting transmitted light that is modulated at a first modulation frequency, an image sensor having a plurality of reception elements for generating a respective received signal, a plurality of demodulation units for demodulating the received signals at the first modulation frequency to acquire sampling values, a reference illumination unit for transmitting reference light that is modulated at the first modulation frequency and is guided to the image sensor within the camera, and a control and evaluation unit. In this respect, the control and evaluation unit is configured to distribute reference part measurements for a functional test over a plurality of distance measurements.

公开(公告)号：US20220291362A1

公开(公告)日：2022-09-15

申请号：US17686697

申请日：2022-03-04

Applicant: SICK AG

Inventor： Wolfram STREPP

IPC: G01S7/4915 ,  G01S17/894 ,  G01S7/4911

Abstract: An optoelectronic device for distance measurement in a detection zone using a phase based time of light method is provided that has a transmitter device for transmitting a light signal that is modulated by at least one first modulation frequency f1, a reception device having at least one light reception element for generating a received signal from the light signal reflected back in the detection zone, and a control and evaluation unit that is configured to determine a phase offset between the transmitted light signal and the light signal reflected back and to determine a time of flight therefrom, and to evaluate a first amplitude determined from the received signal to determine an erroneous measurement by reflection of the light signal at an object in the detection zone outside an unambiguity range of the phase based time of light method.