Laser radar, scanner for laser radar and equipment

By dividing the scanner into a fixed speed zone and a variable speed transition zone in the lidar, and using a half-cycle cosine function to control the rotation speed change, combined with the emission timing of the transmitter, the problem of improving the ranging capability of lidar without reducing scanning efficiency is solved, achieving detection at a longer distance and more stable scanning performance.

CN122085248APending Publication Date: 2026-05-26浙江禾秒科技有限公司
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Patent Information

Application Number
CN202610551593.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-24
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing lidar systems struggle to improve ranging capabilities without reducing the scanning frame rate, impacting scanning efficiency and long-range detection performance.

Method used

The scanner's swing range is divided into multiple fixed-speed zones and variable-speed transition zones. The rotation speed changes with the angle according to a half-cycle cosine function. Combined with the transmitter's preset emission sequence, the rotation speed and emission time interval are adjusted to optimize the ranging capability.

Benefits of technology

Without changing the angular resolution and frame rate, the detection range of the lidar in part of the field of view is increased, mechanical shock and vibration are reduced, and the motion stability and service life of the scanner are improved.

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Abstract

The invention relates to a laser radar, a scanner used for the laser radar and equipment. The laser radar comprises an emitter and a scanner. The emitter is configured to emit probe light. The scanner is configured to swing around a rotating shaft in a swing range, and deflects the detection light into a view field range. The swing range includes, in a first direction, a first fixed speed zone, a first shift transition zone, and a second fixed speed zone. The first direction is perpendicular to the rotating shaft. The rotating speed of the scanner in the first speed fixed area is larger than that of the scanner in the second speed fixed area. And in the first variable speed transition area, the change relation of the rotating speed of the scanner along with the angle meets a half-cycle cosine function.
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