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Optical imaging lens and imaging equipment

An optical imaging lens and lens technology, applied in the field of imaging lens, achieves the effects of good thermal stability, convenient assembly, and reliable quality

Active Publication Date: 2022-06-17
合肥联创光学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing lenses on the market cannot meet the above requirements well. Therefore, it is urgent to develop an optical lens with a large aperture, miniaturization, and high resolution that can cooperate with ADAS.

Method used

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  • Optical imaging lens and imaging equipment
  • Optical imaging lens and imaging equipment
  • Optical imaging lens and imaging equipment

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0070] see figure 1 , is a schematic structural diagram of the optical imaging lens 100 provided by the first embodiment of the present invention. The optical imaging lens 100 sequentially includes from the object side to the imaging surface along the optical axis: a first lens L1, a second lens L2, a diaphragm ST, a first lens Three lenses L3, fourth lens L4, fifth lens L5, sixth lens L6, filter G1 and protective glass G2.

[0071] The first lens L1 has negative refractive power, the object side S1 of the first lens is concave, and the image side S2 of the first lens is convex;

[0072] The second lens L2 has positive refractive power, and both the object side S3 and the image side S4 of the second lens are convex;

[0073] The third lens L3 has negative refractive power, and both the object side S5 and the image side of the third lens are concave;

[0074] The fourth lens L4 has positive refractive power, the object side of the fourth lens is convex, and the image side S7 ...

no. 2 example

[0086] The structure of the optical imaging lens of the second embodiment is basically the same as that of the optical imaging lens 100 of the first embodiment, the difference is that the curvature radius and material selection of each lens of the optical imaging lens in this embodiment are different. The relevant parameters of the lens are shown in Table 2.

[0087] Table 2

[0088]

[0089] The field curvature diagram, F-tanθ distortion diagram, and vertical-axis chromatic aberration diagram of the optical imaging lens in this embodiment are respectively as follows Figure 5 , Image 6 and Figure 7 shown.

[0090] Depend on Figure 5 It can be seen that the offset of field curvature is controlled within ±0.04 mm, indicating that the optical imaging lens can effectively correct the aberration of the fringe field of view and the secondary spectrum of the entire image plane.

[0091] Depend on Image 6 It can be seen that the optical distortion of the optical imaging ...

no. 3 example

[0094] The structure of the optical imaging lens of the third embodiment is almost the same as that of the optical imaging lens 100 of the first embodiment, the difference is that the materials, curvature radius, thickness, etc. of each lens are also different. The specific parameters of each lens are shown in the table 3 shown.

[0095] table 3

[0096]

[0097] The field curvature diagram, F-tanθ distortion diagram, and vertical-axis chromatic aberration diagram of the optical imaging lens in this embodiment are respectively as follows Figure 8 , Figure 9 and Figure 10 shown.

[0098] Depend on Figure 8 It can be seen that the offset of field curvature is controlled within ±0.04 mm, indicating that the optical imaging lens can effectively correct the aberration of the fringe field of view and the secondary spectrum of the entire image plane.

[0099] Depend on Figure 9 It can be seen that the optical distortion of the optical imaging lens in the full field of v...

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Abstract

The invention discloses an optical imaging lens and an imaging device. The optical imaging lens comprises in sequence from the object side to the imaging surface along the optical axis: a first lens with negative refractive power, the object side is concave, and the image side is convex ; the second lens with positive power, its object side and image side are convex; stop; the third lens with negative power, its object side and image side are concave; the fourth lens with positive power lens, its object side and image side are both convex; the fifth lens with positive power, its object side and image side are both convex; the sixth lens with negative power, its object side is concave, its image side It is a convex surface; wherein, the third lens and the fourth lens form a bonded body. The optical imaging lens has the advantages of miniaturization, large aperture and high resolution.

Description

technical field [0001] The present invention relates to the technical field of imaging lenses, in particular to an optical imaging lens and an imaging device. Background technique [0002] With the continuous improvement of people's demand for driving safety and the continuous maturity of ADAS (advanced driver assistance system) technology, the market demand for in-vehicle cameras is growing explosively. Through the front-view, rear-view, surround-view and other on-board lenses mounted on the vehicle, all-round information inside and outside the vehicle can be obtained to help the driver make correct driving behaviors. Therefore, the adaptability of the lens to the environment and imaging stability become Safety during driving. [0003] The ADAS system has extremely high requirements on the mounted on-board lens. First of all, it requires strong light transmission ability, which can adapt to the changes of light and shade in the external environment. At the same time, it re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B1/00G03B30/00
CPCG02B13/0045G02B1/00G03B30/00
Inventor 梁流峰鲍宇旻
Owner 合肥联创光学有限公司
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