A laser emitting device

Abstract

The invention provides a laser emitting device, comprising a laser bracket, a transmitting circuit group, a transmitting circuit bracket, at least one laser emitting board and a plurality of flexible electrical connectors, the laser bracket and the transmitting circuit bracket are arranged at intervals, and the laser The emitting board is installed on the laser bracket, and at least one laser is arranged on the laser emitting board; the emitting circuit group is installed on the emitting circuit bracket, and the emitting circuit group and the laser emitting board pass through the Flexible electrical connector connection. The laser emitting device of the present invention adopts the laser bracket and the transmitting circuit bracket to install the laser emitting board and the emitting circuit group respectively, so that the space of the laser radar launching cabin is more flexible, and it is convenient to realize the low cost and miniaturization of the laser radar; and the laser emitting board and the circuit board The group uses flexible electrical connectors for easy assembly.

Description

technical field [0001] The invention relates to the field of radar, in particular to a laser emitting device. Background technique [0002] As an important part of the intelligent vehicle environment perception hardware system, Lidar (LIDAR) undertakes important tasks such as roadside detection, obstacle recognition, and real-time localization and mapping (SLAM) in automatic driving. The LIDAR system consists of a laser emitting system and a receiving system. The laser transmitter system generates and emits light pulses, hits the object and reflects back, and is finally received by the receiver. The receiver accurately measures the travel time of the light pulse from when it is emitted to when it is reflected back. Because light pulses travel at the speed of light, the receiver will always receive the previous reflected pulse before the next one is sent. Given that the speed of light is known, travel time can be converted into a measure of distance. LiDAR can accurately ...

AI Technical Summary

Problems solved by technology

The more columns, the more difficult the production and adjustment, the more complex the process, and the lower the production efficiency; the space utilization rate in the system is low, the focal plane is particularly crowded, the heat is large, and the heat is difficult to be exported, while other parts less fever

The layout of the laser involves the layout of the entire laser emitting device. The size of the light-emitting area of ​​the conventionally used semiconductor laser pulse diode is very small, but in fact, due to the influence of the chip package and the size of the driving circuit, the distance between the lasers cannot become very dense.

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