Large-aperture high-definition vehicle-mounted lens for target identification

A target recognition and aperture technology, applied in the field of optical lenses, can solve the problems of poor target recognition ability with low illumination, unable to meet the requirements of recognition targets, low pixel resolution, etc., and achieve improved recognition ability, large aperture, and high resolution. Effect

CN113109922APending Publication Date: 2021-07-13NANYANG LIDA PHOTOELECTRIC
0 Cites 0 Cited by

Patent Information

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

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a large-aperture high-definition vehicle-mounted lens for target identification. The lens 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 space to an image space, 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, a positive-focal-power third lens L3 and a positive-focal-power fourth lens L4, 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 meniscus lens, the positive-focal-power fourth lens L4 is a meniscus lens, the positive-focal-power rear lens group A02 is composed of a positive-focal-power fifth lens L5, a negative-focal-power sixth lens L6 and a positive-focal-power seventh lens L7, and the positive-focal-power fifth lens L5 is a biconvex lens. Compared with the prior art, the low-illumination target recognition capability is high, and the requirement of target recognition can be met.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of optical lenses, in particular to a large-aperture high-definition vehicle-mounted lens for target recognition. 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 technica...

Examples

Embodiment Construction

[0028] see Figure 1-6 It is an embodiment of the present invention, disclosing a large-aperture high-definition vehicle-mounted lens for target recognition. From the object space to the image space, it sequentially includes a positive power front lens group A01, an aperture diaphragm STOP, and a positive power rear lens group. A02, optical filter 8 and image plane 9;

[0029] 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, the third lens L3 with positive refractive power and the fourth lens L4 with positive refractive power. The first lens L1 is a meniscus lens, the second lens L2 with negative power is a biconcave lens, the third lens L3 with positive power is a meniscus lens, and the fourth lens L4 with positive power is a meniscus lens;

[0030] The rear lens group A02 with positive refractive power is composed of the fifth lens L5 with positive refr...