Large-aperture high-definition vehicle-mounted lens

A lens and aperture technology, applied in the field of optical lenses, can solve the problems of low illumination target recognition ability, inability to meet the recognition target requirements, low pixel resolution, etc., to achieve the effect of improving recognition ability, large aperture, and high resolution

CN113109923APending Publication Date: 2021-07-13NANYANG LIDA PHOTOELECTRIC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-07-13

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Abstract

The invention discloses a large-aperture high-definition vehicle-mounted lens, which sequentially comprises a positive-focal-power front lens group A01, an aperture diaphragm STOP, a positive-focal-power rear lens group A02, an optical filter and an image plane from an object side to an image side, wherein the positive-focal-power front lens group A01 is composed of a negative-focal-power first lens L1, a negative-focal-power second lens L2 and a positive-focal-power third lens L3, the negative-focal-power first lens L1 is a meniscus lens, the negative-focal-power second lens L2 is a biconcave lens, the positive-focal-power third lens L3 is a biconvex lens, the positive-focal-power rear lens group A02 is composed of a positive-focal-power fourth lens L4, a negative-focal-power fifth lens L5, a positive-focal-power sixth lens L6 and a positive-focal-power seventh lens L7, the positive-focal-power fourth lens L4 is a biconvex lens, and the negative-focal-power fifth lens L5 is a meniscus lens. Compared with the prior art, the low-illumination target recognition capability is high, and the requirement of target recognition can be met.
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Description

technical field

[0001] The invention relates to the technical field of optical lenses, in particular to a high-definition vehicle-mounted lens with a large aperture. Background technique

[0002] In recent years, automobile intelligence and automation have also become a research hotspot in the development of the automobile industry, and assisted driving and automatic driving have become the future research directions of many automobile companies. For smart cars to realize assisted driving and automatic driving, a target recognition system based on a large aperture and high-definition vehicle lens is essential.

[0003] At present, the common vehicle-mounted lenses on the market have relatively low pixel resolution and relatively small aperture. This type of lens has poor recognition ability for low-illumination targets and cannot meet the requirements for recognizing targets. Contents of the invention

[0004] In order to solve the above-mentioned technical defects, the p...

Examples

Embodiment Construction

[0027] see Figure 1-6 It is an embodiment of the present invention, disclosing a high-definition vehicle-mounted lens with a large aperture, which sequentially includes a positive power front lens group A01, an aperture stop STOP, a positive power rear lens group A02, and a filter lens from the object side to the image side. Light sheet 8 and image plane 9;

[0028] The front lens group A01 with positive refractive power is composed of the first lens L1 with negative refractive power, the second lens L2 with negative refractive power and the third lens L3 with positive refractive power. The first lens L1 with negative refractive power is a meniscus Lenses, the second lens L2 with negative refractive power is a biconcave lens, and the third lens L3 with positive refractive power is a biconvex lens;

[0029] The rear lens group A02 of positive refractive power is composed of the fourth lens L4 of positive refractive power, the fifth lens L5 of negative refractive power, the si...