Large-aperture high-definition lens for commercial vehicle driving at night

Abstract

The invention discloses a large-aperture high-definition lens for commercial vehicle driving at night. The zoom lens comprises a meniscus glass lens with a negative focal length, a plastic aspheric lens with a positive focal length, a third lens with a focal length, a diaphragm, a plastic aspheric lens with a negative focal length, a plastic aspheric lens with a positive focal length and a plasticaspheric lens with a positive focal length which are sequentially arranged from an object side to an image side along an optical axis. According to the invention, the aberration of the lens system iscorrected to a large extent, the MTF resolution is high, it is guaranteed that the whole image surface is high in definition and even in imaging, the luminous flux and the night camera shooting effect at night are improved, the research and development period is shortened, and the research and development efficiency is improved.

Description

technical field [0001] The invention relates to a high-definition lens with a large aperture for driving a commercial vehicle at night. Background technique [0002] With the development of society, people's demand for driving at night is increasing, and driving at night has a great impact on driver fatigue, and the lenses used for night driving of commercial vehicles generally have too small aperture and relatively dark brightness. Therefore, a lot of 940nm lamps need to be added during work, resulting in very serious heating. The transmitted heat will cause the driver to feel a burning sensation on the face, which will aggravate the driver's fatigue driving at night. The existing commercial vehicle night driving lens imaging is mainly 940nm near-infrared light imaging, mainly because 1 / 3 of the chips are more, but 1 / 3 of the chips will lead to a large size of the matching lens, which is not conducive to assembling the module at the Green column position of the vehicle The...

AI Technical Summary

Problems solved by technology

[0002] With the development of society, people's demand for driving at night is increasing, and driving at night has a great impact on driver fatigue, and the lenses used for night driving of commercial vehicles generally have too small aperture and relatively dark brightness. Therefore, a lot of 940nm lamps need to be added during work, resulting in very serious heating, and the transmitted heat will cause the driver to feel a burning sensation on the face, which will aggravate the driver's fatigue driving at night

The existing commercial vehicle night driving lens imaging is mainly 940nm near-infrared light imaging, mainly because 1 / 3 of the chips are more, but 1 / 3 of the chips will lead to a large size of the matching lens, which is not conducive to assembling the module at the Green column position of the vehicle The position of the Green column refers to the two sides of the front window, and the existing technology widens the aperture to match the large target surface of 1 / 3 chip, which increases the size and weight of the lens, which increases the cost and is not conducive to miniaturization. The technical patents for commercial vehicles driving at night are almost blank

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