Optoelectronic sensor and method for operating an optoelectronic sensor

Patent metadata

Field	Value
Publication number	US-2020200909-A1
Application number	US-201916718490-A
Country	US
Kind code	A1
Filing date	Dec 18, 2019
Priority date	Dec 21, 2018
Publication date	Jun 25, 2020
Grant date	—

Abstract

An optoelectronic sensor including a laser ensemble having a plurality of individually activatable laser sources, a receiving unit and an evaluation unit, the laser ensemble being configured to address a subregion of pixels of a field of view with regard to an object through the individually activatable laser sources with the aid of a sequence of distinguishable illumination patterns, and the receiving unit is configured to receive reflections and/or dispersions of these illumination patterns, and the evaluation unit is configured to carry out complete object imaging as a function of received illumination patterns of the subregion of the field of view.

First claim

1 - 10 . (canceled)

11 . An optoelectronic sensor, comprising:
a laser ensemble having a plurality of individually activatable laser sources; a receiving unit; and an evaluation unit; wherein the laser ensemble is configured to address a subregion of pixels of a field of view with regard to an object through the individually activatable laser sources with a sequence of distinguishable illumination patterns per distinguishable illumination pattern, and the receiving unit is configured to receive reflections and/or dispersions of these distinguishable illumination patterns, and the evaluation unit is configured to carry out complete object imaging as a function of received illumination patterns, which address the subregion of pixels of the field of view.

12 . The optoelectronic sensor of claim 11 , wherein a percentage ratio of a number of distinguishable illumination patterns in the sequence to a number of measurements required to address each pixel of the field of view individually amounts to 5% to 50%.

13 . The optoelectronic sensor of claim 11 , wherein each pixel of the field of view is addressable at least once because of the sequence of distinguishable illumination patterns.

14 . The optoelectronic sensor of claim 11 , wherein the receiving unit includes a one-dimensional detector.

15 . The optoelectronic sensor of claim 11 , wherein at least one surface of a laser source of the plurality of laser sources from which a laser beam is emittable has a rectangular form.

16 . The optoelectronic sensor of claim 11 , wherein the laser ensemble includes a VCSEL array and/or a plurality of edge emitters.

17 . The optoelectronic sensor of claim 11 , wherein the distinguishable illumination patterns are generatable by a Hadamard matrix and/or a Walsh matrix.

18 . The optoelectronic sensor of claim 11 , wherein an optical imaging unit is connected downstream from the laser ensemble, the optical imaging unit being configured to guide the illumination patterns onto the object under an emission angle predefined by the position of the imaging unit.

19 . A method for operating an optoelectronic sensor, the method comprising:
emitting a sequence of distinguishable illumination patterns using a laser ensemble having a plurality of individually activatable laser sources to address pixels of a field of view, a subregion of the pixels of the field of view being addressed per illumination pattern; receiving, in response thereto, corresponding reflections and/or dispersed illumination patterns; and carrying out complete object imaging as a function of the received corresponding reflected and/or dispersed illumination patterns; wherein the optoelectronic sensor includes:
the laser ensemble having the plurality of individually activatable laser sources;
a receiving unit; and
an evaluation unit;
wherein the laser ensemble is configured to address the subregion of pixels of the field of view with regard to an object through the individually activatable laser sources with a sequence of distinguishable illumination patterns per distinguishable illumination pattern, wherein the receiving unit is configured to receive the reflections and/or the dispersions of the distinguishable illumination patterns, and wherein the evaluation unit is configured to carry out the complete object imaging as the function of received illumination patterns, which address the subregion of pixels of the field of view.

20 . The method of claim 19 , wherein the distinguishable illumination patterns are orthogonal to one another.

Assignees

• Bosch Gmbh Robert

Inventors

• Haag Norman
• Spiessberger Stefan

Classifications

• H04N23/56

  provided with illuminating means · CPC title

• H04N25/00

  Circuitry of solid-state image sensors [SSIS]; Control thereof · CPC title

• G01S7/481

  Constructional features, e.g. arrangements of optical elements · CPC title

• G01S17/89 Primary

  for mapping or imaging · CPC title

• G01S7/4815 Primary

  using multiple transmitters · CPC title