Laser radar detection device

Abstract

The invention provides a laser radar detection device. The device comprises a curved surface cover body, a laser, a first lens, a detector and a second lens. An emergent light beam of the laser is emitted to a measured object after passing through the first lens and the curved surface cover body in sequence to form a transmitting light path; the normal direction of the intersection point of the first optical axis of the first lens and the curved surface cover body coincides with the first optical axis; a reflected light beam reflected by the measured object sequentially passes through the cover body and the second lens and enters the detector to form a receiving optical path; and the normal direction of the intersection point of the second optical axis of the second lens and the curved surface cover body coincides with the second optical axis. According to the laser radar detection device provided by the invention, the first optical axis and the second optical axis are set to coincidewith the normal direction of the intersection point of each optical axis and the curved surface; the transmitting light path and the receiving light path are not influenced by the shape of the curvedsurface cover body, astigmatism of the transmitting light path and the receiving light path can be eliminated, the quality and the energy of light spots irradiated to a measured object by outgoing light beams are improved, and therefore, the light energy received by the detector and the detection performance of the laser radar are improved.

Description

Technical field [0001] This application relates to the field of lidar technology, specifically, to lidar detection devices. Background technique [0002] Lidar is a commonly used ranging sensor. Due to its advantages of high resolution and little interference from environmental factors, it is widely used in industrial fields, intelligent robots, automobiles and other fields. At present, both the transmitting light path and the receiving light path of the lidar detection device will pass through the radome, and the light will have astigmatism due to the influence of the radome. For example, when the detection light is reflected by an obstacle, it will return through the lidar cover When reaching the detector, the radome has a divergent effect on the light, so that the existing lidar detection device will have the problem of astigmatism, which makes the image spot larger and reduces the receiving efficiency of the detector in the lidar. Therefore, how to reduce the astigmatism of ...

AI Technical Summary

Problems solved by technology

At present, both the transmitting light path and the receiving light path of the lidar detection device pass through the radome. Due to the influence of the radome, the light will produce astigmatism. When reaching the detector, the radome has a divergent effect on the light, which makes the existing laser radar detection device have the problem of astigmatism, which makes the image spot larger and reduces the receiving efficiency of the detector in the laser radar

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