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Lidar sensor for a lidar system

一种激光雷达、传感器的技术,应用在无线电波测量系统、仪器、利用再辐射等方向,达到提高分辨率的效果

Pending Publication Date: 2020-06-30
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a major challenge of this approach is to precisely adjust the phase not only of each individual element but also of the secondary (Nebenordnung) emitted by the interference pattern (Interferenzmuster) in other directions

Method used

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  • Lidar sensor for a lidar system
  • Lidar sensor for a lidar system
  • Lidar sensor for a lidar system

Examples

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Embodiment Construction

[0037] Figure 1a An exemplary two-dimensional transceiver array 2 is shown. The transceiver array 2 has a plurality of optical transceivers 3a, 3b, 3c, 3d, 3e. Thus, in Figure 1a The transceiver array 2 shown in is composed of 25 optical transceivers 3a, 3b, 3c, 3d, 3e. Here five rows of five optical transceivers 3a, 3b, 3c, 3d, 3e are arranged parallel to each other. The individual transceivers correspond structurally to each other. The transceiver array 2 is a so-called switch array photonic integrated circuit.

[0038] The transceiver array 2 is arranged to couple one of the optical transceivers 3a, 3b, 3c, 3d, 3e simultaneously with the light source and the receiving sensor, respectively. This means that only one of the optical transceivers 3a, 3b, 3c, 3d, 3e is active in each case and is able to detect a sampling point. To this end, the optical transceivers 3a, 3b, 3c, 3d, 3e each first pass through the sending interval and then the receiving interval when the corre...

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Abstract

The invention relates to a LIDAR sensor 1, including: a transceiver-array 2, which includes a plurality of optical-transceivers, the transceiver-array 2 being a switched-array photonic integrated-circuit, each of the optical-transceivers being set up to in each instance take in a first scanning-spot in a first field-of-view of the LIDAR sensor; a microlens-array 4 which has a plurality of microlenses, the microlens-array being disposed in an optical path of the LIDAR sensor in front of the transceiver array, one each of the microlenses in the optical-path being situated in front of one each ofthe optical-transceivers; a lens that is disposed in the optical-path in front of the microlens-array; and an optical-scanning-unit which is equipped to alter an optical-beam-path, that starts from one of the optical-transceivers, so that in each instance, a second scanning-spot in the first field-of-view of the LIDAR sensor is sensed by the optical-transceivers, wherein the first scanning-spotslying between the second scanning-spots.

Description

technical field [0001] The invention relates to a laser radar sensor. Background technique [0002] Different solutions exist for lidar sensors. On the one hand, so-called macro scanners are used. In this case, for example, the rotating macromirror has a diameter in the centimeter range. As a result, scanning beams having a diameter in the centimeter range can also be guided via the mirror in the transmission path as well as in the reception path. Such a large beam diameter has advantages in terms of eye safety compliance, since the pupil diameter assumed in the standard captures only a small portion of the beam. In addition, larger beam diameters are robust against disturbances such as rain or dust. [0003] Another alternative to lidar sensors is the use of microscanners. These are small mirrors with a diameter in the millimeter range, typically in the range of 1 mm to 3 mm, which are produced in MEMS technology and can vibrate in one or two axes in order to deflect t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/481G01S7/4863G01S7/4914G01S17/88
CPCG01S7/4817G01S7/4863G01S7/4914G01S17/88G01S7/4811G01S17/08G01S17/42
Inventor D·A·迈尔M·维希曼
Owner ROBERT BOSCH GMBH
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