Laser transmitter module and lidar with the same

Abstract

The invention discloses a laser emitting module and a laser radar having the same. A laser emission module according to an embodiment of the present invention includes: a substrate; a support part, which is arranged on the substrate, and has a metal pattern formed on the surface; a light emitting part, which is arranged on one side of the support part, and includes multiple a plurality of lasers, the first electrodes of the multiple lasers are connected to each other, and the second electrodes are formed apart from each other; the metal pattern on one side of the support part includes: a first pattern, including a setting part and a connecting part, and the connecting part connects The setting part is electrically connected to the bottom surface of the support part, a plurality of second patterns are formed under the setting part and extend to the bottom surface of the support part, and the first electrode of the light emitting part is set on the bottom surface of the support part. The setting part of the first pattern, the second electrodes of the light emitting part are respectively electrically connected to the second pattern through metal wires.

Description

technical field [0001] The invention relates to the field of optics, in particular to a laser radar and a transmitting module of the laser radar. Background technique [0002] In the field of autonomous driving, autonomous vehicles can detect surrounding objects with the help of devices such as Lidar (LIDAR). The laser radar can emit a laser beam to the surrounding three-dimensional space as a detection signal, and make the laser beam irradiate the objects in the surrounding space and then be reflected to become an echo signal and return. The laser radar combines the received echo signal with the emitted detection signal Comparisons are made to obtain relevant information about surrounding objects such as distance, speed, etc. [0003] The lidar as mentioned above includes a transmitting module and a receiving module. The transmitting module generates and emits a laser beam, and the laser beam that hits the surrounding objects and reflects back is received by the receiving...

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Problems solved by technology

[0005] However, in the above structure, multi-line lidar is realized by stacking multiple substrates, so when the number of lines of lidar reaches 64 lines or even 128 lines, the size of the transmitting module will become larger, and because it is necessary to configure each The substrates of edge-emitting lasers are ray-corrected individually, so it takes a long time to calibrate all the substrates, which reduces the production speed of LiDAR and increases the manufacturing cost

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