LIDAR device and method for scanning a scan angle

Patent metadata

Field	Value
Publication number	US-10852397-B2
Application number	US-201815935171-A
Country	US
Kind code	B2
Filing date	Mar 26, 2018
Priority date	Apr 3, 2017
Publication date	Dec 1, 2020
Grant date	Dec 1, 2020

Abstract

A method for scanning a scan angle in which at least two beams are generated. The at least two beams are deflected along the scan angle, and the at least two incident beams reflected on an object are received and detected, the at least two beams being generated and detected in an offset manner with respect to one another. Furthermore, a LIDAR device for scanning a scan angle is also described.

First claim

What is claimed is:

1. A method for scanning a scan angle, the method comprising:
generating, via a first beam source and a second beam source, at least two beams, wherein each of the beam sources each have one emission surface;
deflecting the at least two beams along the scan angle, so that there is a gapless illumination of the scan angle;
receiving at least two incident beams reflected on an object; and
detecting, via at least one detector, the at least two incident beams;
wherein the at least two beams are generated in an offset manner with respect to one another, and the at least two incident beams are detected in an offset manner with respect to one another,
wherein the at least one detector includes multiple detector cells,
wherein the beam sources are combined to form a stack, and
wherein the emission surfaces are arranged in the offset manner with respect to each other and form an overlap area.

2. The method as recited in claim 1 , wherein the at least two beams are generated in an angularly offset manner with respect to one another.

3. The method as recited in claim 1 , wherein the at least two beams are generated in a spatially offset manner with respect to one another.

4. The method as recited in claim 1 , wherein the at least two incident beams are detected in a spatially offset matter with respect to one another.

5. The method as recited in claim 1 , wherein the at least two beams are generated in a time-staggered manner with respect to one another.

6. The method as recited in claim 1 , wherein the at least two incident beams are detected in a time-staggered manner with respect to one another.

7. A LIDAR device for scanning a scan angle, comprising:
at least two beam sources for generating at least two beams, wherein each of the beam sources each have one emission surface;
a deflection unit for deflecting the at least two beams along the scan angle, so that there is a gapless illumination of the scan angle; and
a receiving unit for receiving and guiding at least two incident beams reflected on an object onto at least one detector;
wherein the at least two beam sources are situated so as to be offset with respect to one another and at least one first beam source of the at least two beam sources closes at least one scanning gap of at least one second beam source of the at least two beam sources,
wherein the at least one detector includes multiple detector cells,
wherein the beam sources are combined to form a stack, and
wherein the emission surfaces are arranged in the offset manner with respect to each other and form an overlap area.

8. The LIDAR device as recited in claim 7 , wherein the at least one first beam source closes the at least one scanning gap of the at least one second beam source in a time-staggered manner.

9. The LIDAR device as recited in claim 7 , wherein the at least two beam sources are one of edge-emitting semiconductor lasers or surface-emitting semiconductor lasers.

10. The LIDAR device as recited in claim 9 , wherein the at least one first beam source and the at least one second beam source are each developed as a bar and together form a stack.

11. The LIDAR device as recited in claim 10 , wherein the at least two bars of the stack are connected to one another via at least one common electrode.

Assignees

• Bosch Gmbh Robert

Inventors

• Schwarz Hans-Jochen
• Spiessberger Stefan

Classifications

• G01S7/4815

  using multiple transmitters · CPC title

• G01S7/4817 Primary

  relating to scanning · CPC title

• G01S17/88 Primary

  Lidar systems specially adapted for specific applications · CPC title