Laser and laser radar including the laser

By adopting a common cathode or anode design for multiple light-emitting units in the lidar, combined with insulating layer and metal layer connections, the vertical angle resolution and point cloud density are improved without increasing the area, and the complexity and cost of the driving circuit are reduced.

CN115189224BActive Publication Date: 2025-09-30HESAI TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202110357077.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-04-01
Publication Date
2025-09-30
Estimated Expiration
2041-04-01

AI Technical Summary

Technical Problem

The density of light-emitting units in existing lidars is limited by the area of ​​the printed circuit board, making it difficult to improve the vertical angle resolution and point cloud density. In addition, the driving circuit is complex and costly.

Method used

A laser using multiple light-emitting units, in which the cathode or anode is shared and separated by an insulating layer, and the shared cathode or anode is connected through a metal layer. Each light-emitting unit has a wiring unit, which is respectively connected to the unshared anode or cathode and driven by different voltage sources to achieve efficient arrangement and driving of the light-emitting units.

Benefits of technology

Without increasing the laser area, the vertical angle resolution and point cloud density of the lidar are significantly improved, the complexity and cost of the driving circuit are reduced, and the luminous efficiency is improved.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN115189224B_ABST
    Figure CN115189224B_ABST
Patent Text Reader

Abstract

The present invention provides a laser for a laser radar (LIDAR), comprising: a plurality of light-emitting units, each light-emitting unit including multiple light-emitting points, wherein the cathodes or anodes of the plurality of light-emitting units are shared, and each light-emitting unit is provided with a wiring unit, each of which is electrically connected to the unshared anode or cathode of the corresponding light-emitting unit. The laser having multiple light-emitting units does not increase in area, and the echo beams generated by the probe beams emitted by the multiple light-emitting units are received by the same detector, thereby improving the vertical angular resolution and point cloud density of the LIDAR.
Need to check novelty before this filing date? Find Prior Art