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Optical lens and imaging device

A technology of optical lens and imaging surface, applied in the field of imaging lens, can solve the problems of optical lens not being able to wide viewing angle, miniaturization and high-quality imaging balance, and achieve the effect of compact structure, good imaging quality, and high-quality imaging balance

Active Publication Date: 2021-04-30
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 device
  • Optical lens and imaging device

Examples

Experimental program
Comparison scheme
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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 with 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 ...

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 with Figure 13 , respectively show the field curvature curve, f-tanθ distortion...

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Abstract

The invention discloses an optical lens and imaging equipment, and the optical lens sequentially comprises the following parts from an object side to an imaging surface along an optical axis: a first lens with negative focal power, wherein the object side surface is a convex surface, and the image side surface is a concave surface; a diaphragm; a second lens, wherein the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a convex surface; a third lens, wherein the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a convex surface; a fourth lens with positive focal power, wherein the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a convex surface near the optical axis and has at least two inflection points; and a fifth lens, wherein the object side surface of the fifth lens is a convex surface at the paraxial region and is provided with at least one inflection point, and the image side surface of the fifth lens is a concave surface at the paraxial region and is provided with 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 aspheric lenses. According to the optical lens, the balance of wide-viewing-angle, miniaturized and high-quality imaging of the lens can be better realized.

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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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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