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Optical lens and imaging equipment

An optical lens and lens technology, applied in the field of imaging lenses, can solve the problems that optical lenses cannot have a wide viewing angle, miniaturization and high-quality imaging balance.

Active Publication Date: 2021-08-20
江西联坤智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the object of the present invention is to propose an optical lens and an imaging device to solve the technical problems that the optical lens cannot better realize wide viewing angle, miniaturization and high-quality imaging balance in the prior art

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0071] see figure 1 , is a schematic structural diagram of the optical lens 100 provided in the first embodiment of the present invention, the optical lens 100 includes in sequence from the object side to the imaging surface along the optical axis: a first lens L1, a stop ST, a second lens L2, and a third lens L3, fourth lens L4, fifth lens L5, filter G1.

[0072] The first lens L1 has negative refractive power, the object side S1 of the first lens is a convex surface, and the image side S2 of the first lens is a concave surface;

[0073] The second lens L2 has positive refractive power, the object side S3 of the second lens is a convex surface, and the image side S4 of the second lens is a convex surface;

[0074] The third lens L3 has negative refractive power, the object side S5 of the third lens is concave, and the image side S6 of the third lens is convex;

[0075] The fourth lens L4 has positive refractive power, the object side S7 of the fourth lens is concave, and th...

no. 2 example

[0090] The structure of the optical lens in this embodiment is roughly the same as that of the optical lens 100 in the first embodiment. The positions of the inflection points on the S8 are: the distance between the inflection point near the optical axis and the optical axis is 0.376mm, and the distance between the inflection point and the optical axis far away from the optical axis is 0.677mm.

[0091] The relevant parameters of each lens in the optical lens provided in this embodiment are shown in Table 3.

[0092] table 3

[0093]

[0094] The surface coefficients of each aspheric surface of the optical lens in this embodiment are shown in Table 4.

[0095] Table 4

[0096]

[0097] Please refer to Image 6 , Figure 7 , Figure 8 and Figure 9 , respectively show the field curvature curve, f-tanθ distortion curve, vertical axis chromatic aberration curve and axial chromatic aberration curve of the optical lens in this embodiment.

[0098] Image 6 Indicates t...

no. 3 example

[0103] The structure of the optical lens in this embodiment is roughly the same as that of the optical lens 100 in the first embodiment, the difference is that the radius of curvature and material selection of each lens are different; and in this embodiment, the image side of the fourth lens The positions of the inflection points on the S8 are: the distance between the inflection point close to the optical axis and the optical axis is 0.395mm, and the distance between the inflection point and the optical axis far away from the optical axis is 0.667mm.

[0104] The relevant parameters of each lens in the optical lens provided in this embodiment are shown in Table 5.

[0105] table 5

[0106]

[0107] Table 6 shows the surface coefficients of each aspheric surface of the optical lens in this embodiment.

[0108] Table 6

[0109]

[0110] Please refer to Figure 10 , Figure 11 , Figure 12 and Figure 13 , respectively show the field curvature curve, f-tanθ distortion ...

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Abstract

The invention discloses an optical lens and an imaging device. The optical 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 a convex surface, and the image side is a concave surface; The second lens with positive refractive power has a convex object side and a convex image side; a third lens with negative refractive power has a concave object side and a convex image side; a fourth lens with positive refractive power , the object side is concave, the image side is convex at the near optical axis and has at least two inflection points; the fifth lens with negative power, the object side is convex at the near optical axis and has at least one inflection point The inflection point, its image side is concave at the near optical axis and has at least one inflection point; wherein, the first lens, the second lens, the third lens, the fourth lens and the fifth lens are all plastic aspherical lenses. The optical lens can better realize the balance of wide viewing angle, miniaturization, and high-quality imaging of the lens.

Description

technical field [0001] The invention relates to the technical field of imaging lenses, in particular to an optical lens and imaging equipment. Background technique [0002] With the rapid growth of the consumer electronics market and the popularity of social networking, video, and live broadcast software, people have higher and higher requirements for the imaging quality of camera lenses. Camera lenses have even become the primary consideration for consumers when purchasing electronic devices. [0003] With the continuous development of mobile information technology, portable electronic devices such as smartphones are also developing in the direction of thinner and lighter, full-screen, ultra-high-definition imaging, etc. In order to pursue better imaging effects, camera lenses mounted on portable electronic devices put forward higher requirements. Because wide-angle lenses are widely used, they are very useful for shooting large-scale scenes at close range, and it is easy ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0045G02B13/06G02B13/18
Inventor 于笑枝曾昊杰刘绪明曾吉勇
Owner 江西联坤智能科技有限公司
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