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A vehicle-mounted adas lens and image pickup device with a large target surface

A large target surface and lens technology, applied in the optical field, can solve the problems of low imaging quality and increase the imaging quality of the large target surface vehicle ADAS lens, and achieve the effect of increasing the imaging quality, improving the imaging quality, and improving the spherical aberration of the system.

Active Publication Date: 2022-06-03
JIAXING ZHONGRUN OPTICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention will solve the existing technical problems and provide a vehicle-mounted ADAS lens with a large target surface and an image pickup device. Imaging Quality of ADAS Lens for Surface Vehicles

Method used

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  • A vehicle-mounted adas lens and image pickup device with a large target surface
  • A vehicle-mounted adas lens and image pickup device with a large target surface
  • A vehicle-mounted adas lens and image pickup device with a large target surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 6.5

[0046] Wherein, FG1 is the focal length of the first lens group G1, and FG2 is the focal length of the second lens group G2.

[0051] Wherein, F1 is the focal length of the first lens L1, F2 is the focal length of the second lens L2.

[0054] Nd3>1.9;

[0055] Wherein, Nd3 is the refractive index of the third lens L3.

[0060] |Nd6-Nd5|>0.4;

[0061] |Vd5-Vd6|>60;

[0064] The large target surface vehicle-mounted ADAS lens comprises an aspherical lens at most.

[0066] The seventh lens L7 is an aspheric lens.

Embodiment 2

[0072] The auxiliary component G3 is composed of a filter FI and a protective glass CG.

[0073] The basic lens data of the large target surface vehicle ADAS lens of this embodiment is shown in Table 1.

[0076]

[0077] In this embodiment, F=4.2mm, FNO=1.60, TTL=29.6mm, FOV=120.0°, TTL / F=7.05;

[0079] FG1=-14.8mm, FG2=8.1mm, FG1 / FG2=-1.83;

[0080] Wherein, FG1 is the focal length of the first lens group G1, and FG2 is the focal length of the second lens group G2.

[0081] F1=-11.3mm, F2=-7.6mm, F3=9.8mm, F4=21.5mm, F5=10.3mm, F6=-13.5mm,

[0082] F1 / F=-2.7, F2 / F=-1.8, F3 / F=2.3, F4 / F=5.1, F5 / F=2.5, F6 / F=-3.2, F7 / F

[0083] F1 to F7 are the focal lengths of the first lens L1 to the seventh lens L7, respectively.

[0084] R11=8.763mm, R12=4.173mm;

[0085] |(R11-R12) / (R11+R12)|=0.355;

Embodiment 3

[0091] The auxiliary component G3 is composed of a filter FI and a protective glass CG.

[0096]

[0098]

[0099] In this embodiment, F=4.0mm, FNO=1.60, TTL=27.0mm, FOV=127.0°, TTL / F=6.75;

[0101] FG1=-17.9mm, FG2=8.5mm, FG1 / FG2=-2.1;

[0102] Wherein, FG1 is the focal length of the first lens group G1, and FG2 is the focal length of the second lens group G2.

[0103] F1=-9.2mm, F2=-9.8mm, F3=11.1mm, F4=11.8mm, F5=10.7mm, F6=-9.9mm, F7

[0104] F1 / F=-2.3, F2 / F=-2.5, F3 / F=2.8, F4 / F=2.9, F5 / F=2.7, F6 / F=-2.5, F7 / F

[0105] F1 to F7 are the focal lengths of the first lens L1 to the seventh lens L7, respectively.

[0106] R11=9.717mm, R12=3.888mm;

[0107] |(R11-R12) / (R11+R12)|=0.429;

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Abstract

The invention relates to the field of optics, in particular to a vehicle-mounted ADAS lens with a large target surface and an image pickup device. The large target surface vehicle-mounted ADAS lens includes a first lens group with negative refractive power and a second lens group with positive refractive power in sequence from the object plane side to the image plane side; the first lens group consists of the second lens group with negative refractive power A lens, a second lens with negative power and a third lens with positive power; the second lens group is composed of a fourth lens with positive power, a fifth lens with positive power, and a third lens with negative power Six lenses and the seventh lens with positive refractive power, the fifth lens and the sixth lens are cemented; the large-target vehicle-mounted ADAS lens satisfies the following conditional formula: 6.5<TTL / F<7.5. It reduces the possibility that the size of the vehicle-mounted ADAS lens with a large target surface is too small, which in turn leads to low imaging quality, and increases the imaging quality of the vehicle-mounted ADAS lens with a large target surface.

Description

A large target surface vehicle ADAS lens and image pickup device technical field [0001] The present invention relates to the field of optics, in particular to a large target surface vehicle-mounted ADAS lens and an image pickup device. Background technique In recent years, the field of automatic driving has developed rapidly at home and abroad, and ADAS advanced assisted driving system is used as automatic driving A key part of the field has also been favored by the market; the vehicle ADAS lens is the key for the entire assisted driving system to obtain external information. important components of information, and its optical performance is critical. Existing common vehicle-mounted lens is generally applicable to the sensor of small target surface, and lens itself FNO is too large, use Because more plastic lenses are used, the transmittance of the overall lens is low, which seriously affects the ADAS system in low-light environments. Judgment and analysis of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0015G02B13/0045G02B13/006G02B13/06
Inventor 王志超厉冰川
Owner JIAXING ZHONGRUN OPTICAL TECH
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