3d radar lens

Abstract

The invention relates to a 3d radar lens. The3d radar lens comprises a main lens barrel, a front lens group, a diaphragm and a rear lens group sequentially arranged in the main lens barrel along the incident direction of light, and a photosensitive chip arranged at the rear end of the main lens barrel. The focal power of the front lens group is 8-20mm, and the focal power of the rear lens group is8.5-15mm; the front lens group comprises a first lens, a second lens and a third lens which are sequentially arranged along the incident direction of light, and the rear lens group comprises a fourthlens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged along the incident direction of light; the first lens is a biconcave lens, the second lens is a biconvex lens, thethird lens is a biconvex lens, the fourth lens is a biconcave lens, the fifth lens is a biconvex lens, the sixth lens is a biconvex lens, and the seventh lens is a meniscus lens. The invention provides the 3d radar lens of which the aperture can reach 0.8, the lens has strong light receiving capability, and the ranging distance of laser radar can be effectively improved.

Description

technical field [0001] The invention relates to the lens field, in particular to a 3D radar lens. Background technique [0002] The laser radar ranging technology obtains the three-dimensional information of the scene through laser scanning. The basic principle is to emit laser light into the space according to a certain time interval, and record the signal of each scanning point, and calculate the interval time from the laser radar to the object in the scene under test, and then reflect back to the laser radar through the object. The distance between the surface of the object and the lidar. Lidar is widely used in artificial intelligence systems for outdoor three-dimensional space perception due to its wide ranging range and high measurement accuracy, such as obstacle avoidance navigation for autonomous vehicles, 3D scene reconstruction and other applications. [0003] 3D lidar lenses are used to receive light signals. The larger the aperture, the better the receiving per...

AI Technical Summary

Problems solved by technology

[0003] 3D lidar lenses are used to receive light signals. The larger the aperture, the better the receiving performance. The existing 3d lidar lenses on the market usually have an aperture of 1.2 or more. For more and more complicated road conditions, lenses with an aperture of 1.2 appear to be more complex. We can’t do what we want, and it’s an urgent task to develop a lens with a large aperture

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