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Optical lens and imaging equipment

An optical lens and lens technology, which is applied in the field of imaging lenses, can solve the problems of being difficult to meet the requirements of thin and light portable electronic devices and high-definition imaging, large volume, and low pixels, and achieve the effect of meeting the requirements of thinness, small volume, and large clear range.

Active Publication Date: 2021-04-02
JIANGXI LIANYI OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most wide-angle lenses currently on the market are large in size and low in pixels, making it difficult to meet the thinning and high-definition imaging requirements of portable electronic devices

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0073] see figure 1 , which is a schematic structural view of the optical lens 100 provided by 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 second lens L2, a diaphragm ST, a second lens Three lenses L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7 and infrared filter G1.

[0074] The first lens L1 has negative refractive power, the object side S1 of the first lens is concave at the near optical axis and has an inflection point, and the image side S2 of the first lens is concave;

[0075] 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 concave surface;

[0076] The third lens L3 has a positive refractive power, and both the object side S5 and the image side S6 of the third lens are convex;

[0077] The fourth lens L4 has nega...

no. 2 example

[0094] For the structural schematic diagram of the optical lens 200 provided in this embodiment, please refer to Figure 6 , the structure of the optical lens 200 in the present embodiment is roughly the same as that of the optical lens 100 in the first embodiment, the difference is: the refractive index of the third lens and the seventh lens of the optical lens 200 in the present embodiment, A The number of shells is different, and the radius of curvature of each lens surface is also different.

[0095] The relevant parameters of each lens in the optical lens 200 provided in this embodiment are shown in Table 3.

[0096] table 3

[0097]

[0098] The surface coefficients of each aspheric surface of the optical lens 200 in this embodiment are shown in Table 4.

[0099] Table 4

[0100]

[0101] In this embodiment, the curves of field curvature, distortion, vertical chromatic aberration, and axial chromatic aberration of the optical lens 200 are as follows Figure 7 ,...

no. 3 example

[0107] For the structural schematic diagram of the optical lens 300 provided in this embodiment, please refer to Figure 11 , the structure of the optical lens 300 in this embodiment is roughly the same as that of the optical lens 100 in the first embodiment, the difference is that the refractive index of the third lens and the seventh lens of the optical lens 300 in this embodiment , Abbe number is not the same, and the radius of curvature of each surface of each lens is also different.

[0108] The relevant parameters of each lens in the optical lens 300 provided in this embodiment are shown in Table 5.

[0109] table 5

[0110]

[0111] Table 6 shows the surface coefficients of each aspheric surface of the optical lens 300 in this embodiment.

[0112] Table 6

[0113]

[0114] In this embodiment, the curves of field curvature, distortion, vertical axis chromatic aberration, and axial chromatic aberration of the optical lens 300 are as follows Figure 12 , Figure...

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Abstract

The invention discloses an optical lens and imaging equipment, and the optical lens sequentially comprises, from an object side to an imaging surface along an optical axis, a first lens with negativefocal power, wherein the object side surface of the first lens is a concave surface at a position close to the optical axis and is provided with an inflection point, and the image side surface of thefirst lens is a concave surface; a second lens with positive focal power, wherein the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; a diaphragm; a third lens with positive focal power, wherein the object side surface and the image side surface of the third lens are convex surfaces; a fourth lens with negative 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; a fifth lens with positive focal power, wherein the object side surface and the image side surface of the fifth lens are convex surfaces; a six lens with negative focal power, wherein the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a convex surface near the optical axis; and a seventh lens with negative focal power, wherein the object side surface of the seventh lens is a convex surfacenear the optical axis, the image side surface of the seventh lens is a concave surface near the optical axis, and both the object side surface and the image side surface have at least one inflection point. The optical lens has the advantages of ultra-wide angle, high pixel and small size.

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] At present, with the popularization of portable electronic devices (such as smartphones, tablets, and cameras), coupled with the popularity of social, video, and live broadcast software, people are more and more fond of photography, and camera lenses have become a must for electronic devices. Standard configuration has even become the primary consideration for consumers when purchasing electronic equipment. [0003] With the continuous development of mobile information technology, portable electronic devices such as mobile phones are also developing in the direction of thinner and lighter, ultra-high-definition imaging, etc., which puts forward higher requirements for camera lenses mounted on portable electronic devices. Because wide-angle lenses are widely used, they are very useful for shooting large-s...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0045G02B13/06
Inventor 王义龙刘绪明曾昊杰李国锋曾吉勇
Owner JIANGXI LIANYI OPTICS CO LTD
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