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Lidar device having a curved lens array for emitting subbeams

A technology of laser radar and lens array, applied in the direction of lens, re-radiation, optics, etc., can solve the problem of cost

Pending Publication Date: 2022-06-21
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for FMCW lidar sensors, this approach comes with a significant cost expense, since the frequency modulated laser source is a large cost factor

Method used

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  • Lidar device having a curved lens array for emitting subbeams
  • Lidar device having a curved lens array for emitting subbeams
  • Lidar device having a curved lens array for emitting subbeams

Examples

Experimental program
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Embodiment Construction

[0038] figure 1 A schematic diagram of a lidar device 1 according to an embodiment is shown. LiDAR device 1 has a transmitting unit 2 and a receiving unit 4 .

[0039] According to the exemplary embodiment shown, the transmitting unit 2 has a beam source 6 which is designed as an infrared laser. The beam source 6 serves to generate an electromagnetic beam 7 . In addition, the transmitting unit 2 has an optical element 8 and a curved lens array 10 .

[0040] The optical element 8 is configured as a convex lens and is arranged in the beam path of the generated beam 7 between the beam source 6 and the curved lens array 10 .

[0041] The curved lens array 10 is used to divide the generated beam 7 into a plurality of sub-beams 11 , which are emitted into the scanning area A. FIG.

[0042] The optical element 8 can diverge or focus the generated beam 7 in such a way that the partial beams emitted by the curved lens array 10 radiate into the scanning area A in a collimated manner...

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Abstract

The invention relates to a lidar device (1) for scanning a scanning region (A), comprising a transmitting unit (2) having at least one beam source (6) for generating electromagnetic radiation, and comprising a receiving unit (4), the transmitting unit has a receiving unit (16) having at least one detector (16) for receiving a beam scattered back and / or reflected from the scanning region, the transmitting unit and / or the receiving unit being immovable, rotatable or pivotable, the transmitting unit having a curved lens array (10), the lens array (10) being arranged in the scanning region. The invention relates to a curved lens array for splitting a beam generated by a beam source into sub-beams and for emitting said sub-beams into a scanning area (A). The invention further relates to a method for operating a lidar device (1) having at least one curved lens array (10, 12).

Description

technical field [0001] The invention relates to a laser radar device for scanning a scanning area, the laser radar device having a transmitting unit with at least one beam source for generating electromagnetic radiation and a receiving unit, The receiving unit has at least one detector for receiving scattered and / or reflected radiation from the scanning region. The invention also relates to a method for operating a lidar device with at least one curved lens array. Background technique [0002] Vehicles and driving functions that can operate autonomously are becoming increasingly important in public road transport. In order to technically realize this type of vehicle and driving functions, sensors such as camera sensors, radar sensors and lidar sensors are required. [0003] In this case, the lidar sensor generates an electromagnetic beam, for example a laser beam, and scans the scanning area with this beam. Based on the time-of-flight analysis, the distance between the li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/08G01S17/931G01S7/481G02B3/00G02B27/09
CPCG01S17/08G01S17/931G01S7/4817G01S7/4813G02B27/0905G02B3/0043G01S7/4811G02B27/123
Inventor J·里希特
Owner ROBERT BOSCH GMBH
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