Optical system

Abstract

The invention relates to an optical system comprising a first lens group G1 and a second lens group G2. Optical axes of the two lens groups are overlapped completely. The field angle of the first lens group G1 is smaller than 60 degrees; and the first lens group G2 of the second lens group G2 is larger than 90 degrees. All lenses of the front segment of the first lens group G1 and the front segment of the second lens group G2 are shared and all lenses of the rear segment of the first lens group G1 and the rear segment of the second lens group G2 are in semicircular shapes along the optical axis direction from the object space. The semicircular lenses, below the horizontal plane where the optical axis is located, of the lenses at the rear segment of the first lens group G1 are kept and the semicircular parts above the horizontal plane are removed completely; and the semicircular lenses, above the horizontal plane where the optical axis is located, of the lenses at the rear segment of the second lens group G2 are kept and the semicircular parts below the horizontal plane are removed completely. The semicircular lenses at the rear segments of the two lens groups are assembled into a same lens cone.

Description

technical field [0001] The invention relates to an optical system. Background technique [0002] In recent years, with the increasing number of cars and the rapid development of unmanned driving technology, people have higher and higher requirements for driving safety. In the past, the safety of a car only relied on the driver's own judgment. Once the driver is not focused or notices various environmental changes around the car in time, it is easy to cause driving accidents. Therefore, with the continuous development of optical lenses, human beings began to use various vehicle optical lenses to assist drivers in understanding and judging the driving environment. At present, in some high-end and cutting-edge car driving systems, the emergence of Advanced Driver Assistant System (ADAS) has brought car driving safety into a new era of human-computer interaction. [0003] Advanced Driver Assistance System, referred to as ADAS, uses various sensors installed on the car to colle...

AI Technical Summary

Problems solved by technology

When the car is driving at high speed, the driving risk caused by information delay will be greatly increased, so that there is a certain safety risk in the ADAS system

[0008] At the same time, more than two lenses coupled with more than two sets of image sensors, image processors, and screens will make the cost of the detection module very expensive. Therefore, ADAS systems are still in high-end car driving systems and have not been popularized. To the low-end car field

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