Medium and long-range vehicle lens for vehicle target recognition

Abstract

The invention discloses a middle-long distance vehicle-mounted camera lens used for vehicle target recognition. The middle-long distance vehicle-mounted camera lens comprises two lens groups and a diaphragm; a front lens group with positive focal power, the diaphragm and a rear lens group with negative focal power are arranged in sequence from an object space. The front lens group is composed of a first lens with the positive focal power and a gluing lens group; the rear lens group is composed of a fourth lens with the negative focal power and a fifth lens with the positive focal power. The middle-long distance vehicle-mounted camera lens used for the vehicle target recognition is small in distortion, high in resolution ratio and wide in view field angle, and still has a high definition when being used for photographing a middle-long distance target; furthermore, the optical total length of the camera lens is short, and influences on imaging quality, caused by vibration, can be effectively alleviated; the middle-long distance vehicle-mounted camera lens is especially suitable for a vehicle-mounted camera system.

Description

technical field [0001] The invention relates to a vehicle-mounted lens system, in particular to a medium-to-long-distance vehicle-mounted lens for vehicle target recognition. Background technique [0002] Target recognition technology based on machine vision is one of the research hotspots of unmanned vehicles, and the effect of visual recognition depends to a large extent on the imaging quality of the lens. At present, the common vehicle-mounted front-view lenses on the market often have a relatively large field of view. Although they can better image short-distance vehicle targets, they have poor imaging effects on medium- and long-distance vehicle targets, which cannot meet the needs of unmanned vehicles. When driving at a higher speed, the requirements for the preview distance ahead. Contents of the invention [0003] The object of the present invention is to provide a medium-to-long-distance vehicle-mounted lens for vehicle target recognition, which is used in conjun...

AI Technical Summary

Problems solved by technology

At present, the common vehicle-mounted front-view lenses on the market often have a relatively large field of view. Although they can better image short-distance vehicle targets, they have poor imaging effects on medium- and long-distance vehicle targets, which cannot meet the needs of unmanned vehicles. Requirements for the preview distance ahead when driving at a higher speed

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