Vehicle-mounted active safe forward-looking lens

Abstract

The invention provides a vehicle-mounted active safety forward-looking lens which can meet the field requirement of forward-looking active safety. The vehicle-mounted active safety forward-looking lens comprises: a first lens which is a lens with a convex object plane side and a concave image plane side; a second lens with a concave object plane side and a convex image plane side ; a third lens isa lens with a convex object plane side and a convex image plane side; a fourth lens which is a lens with a convex object plane side and a convex image plane side; a fifth lens which is a lens with aconcave object plane side and a convex image plane side; a sixth lens which is a lens with a convex object plane side and a concave image plane side; wherein the first lens, the second lens, the thirdlens, the fourth lens, the fifth lens and the sixth lens are arranged from the object side to the image side in order, and the fourth lens and the fifth lens are cemented into a doublet lens; and thevehicle-mounted active safety forward-looking lens satisfies the following conditions: -2(f1 / f<-1, 60<f2 / f<100, 1<f3 / f<2, -5<f4 / f<1, -2<f5 / f<-1, 5<f6 / f<10, and |DIST0.5|>|DIST1.0*30%|, wherein f1 tof6 are focal lengths of the first to sixth lenses, f is a focal length value of the vehicle-mounted active safety foresight lens, dIST0.5 is a semi-imaging optical distortion value of the vehicle-mounted active safety forward-looking lens, and DIST1.0 is a full-imaging optical distortion value of the vehicle-mounted active safety forward-looking lens.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to a vehicle-mounted active safety front-view lens. Background technique [0002] Nowadays, everyone pays more and more attention to the safety performance of vehicles. The active safety configuration of vehicles should be the most important part of various configurations. Among them, the vehicle-mounted front-view lens is an important part of vehicle active safety. The vehicle-mounted active safety front-view lens has In addition to the requirements of high light transmission, clear imaging, and high and low temperature imaging stability, it is also proposed that the horizontal field of view angle be unchanged and the vertical field of view angle be larger to meet the field of view requirements of front-view active safety. However, the current vehicle-mounted front-view The viewing lens can not meet the requirements. Contents of the invention [0003] In view of the abov...

AI Technical Summary

Problems solved by technology

[0002] Nowadays, everyone pays more and more attention to the safety performance of vehicles. The active safety configuration of vehicles should be the most important part of various configurations. Among them, the vehicle-mounted front-view lens is an important part of vehicle active safety. The vehicle-mounted active safety front-view lens has In addition to the requirements of high light transmission, clear imaging, and high and low temperature imaging stability, it is also proposed that the horizontal field of view angle be unchanged and the vertical field of view angle be larger to meet the field of view requirements of front-view active safety. However, the current vehicle-mounted front-view The viewing lens does not meet the requirements

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