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Wide-angle lens

A wide-angle lens and lens technology, which is applied in the field of optical lenses, can solve the problems of large product volume and weight, and achieve the effect of reducing weight and volume and reducing distortion

Active Publication Date: 2022-04-01
JIANGXI LIANCHUANG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the development of the chip is also moving in two different directions: one is a large target surface chip, which has a good amount of light, which is very suitable for high-quality image processing requirements, and under the same light conditions, the light information obtained by it is better. Many, better image quality performance, more post-processing information, but the product volume and weight are too large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0078] figure 1 The schematic diagram of the structure of the wide-angle lens 100 provided in the first embodiment of the present invention, the wide-angle 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 stop ST, a third lens L3, a second lens The optical centers of the four lenses L4, the fifth lens L5, the sixth lens L6, the filter G1 and the image surface S15 are located on the same straight line.

[0079] A first lens L1 with negative refractive power, the object side S1 of the first lens L1 is concave at the near optical axis, and the image side S2 is concave;

[0080] A second lens L2 with positive refractive power, the object side S3 of the second lens L2 is a convex surface, and the image side S4 is a concave surface;

[0081] A third lens L3 with positive refractive power, the object side S5 of the third lens L3 is a convex surface, and the image side S6 is a convex surface at the ...

no. 2 example

[0096] Figure 5 A schematic structural diagram of the wide-angle lens 200 provided for the second embodiment. The wide-angle lens 200 in this embodiment is roughly the same as the wide-angle lens 100 in the first embodiment, except that the relevant parameters of each lens are different from those of the wide-angle lens 100 in the first embodiment. The stop ST of is between the third lens L3 and the fourth lens L4, wherein the object side S9 of the fifth lens is a convex surface.

[0097] Please refer to Table 3, which shows the relevant parameters of each lens of the wide-angle lens 200 in this embodiment.

[0098] table 3

[0099]

[0100] Please refer to Table 4, which shows the relevant parameters of the aspheric surface of the wide-angle lens 200 in this embodiment.

[0101] Table 4

[0102]

[0103] In this embodiment, the vertical axis chromatic aberration diagram, field curvature diagram, and distortion diagram of the wide-angle lens 200 are as follows: Fi...

no. 3 example

[0108] Figure 9 A schematic structural diagram of the wide-angle lens 300 provided for the third embodiment. The wide-angle lens 300 in this embodiment is roughly the same as the wide-angle lens 100 in the first embodiment, except that the relevant parameters of each lens are different from those of the wide-angle lens 100 in the first embodiment. The third lens L3 is a glass aspheric surface.

[0109] Please refer to Table 5, which shows the relevant parameters of each lens of the wide-angle lens 300 in this embodiment.

[0110] table 5

[0111]

[0112] Please refer to Table 6, which shows the relevant parameters of the aspheric surface of the wide-angle lens 300 in this embodiment.

[0113] table 6

[0114]

[0115] In this embodiment, the vertical axis chromatic aberration diagram, field curvature diagram, and distortion diagram of the wide-angle lens 300 are as follows: Figure 10 , Figure 11 and Figure 12 shown.

[0116] Figure 10 The vertical axis chr...

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Abstract

The present invention provides a wide-angle lens, comprising six lenses in total. The wide-angle lens includes in sequence from the object side to the imaging surface: a first lens with negative refractive power, the object side is concave at the near optical axis, and the image side is concave; The second lens with positive refractive power has a convex surface on the object side and the concave surface on the image side; the third lens with positive refractive power has a convex surface on the object side and a convex surface on the image side near the optical axis; the third lens with negative refractive power Four lenses, the object side is concave, the image side is concave at the near optical axis; the fifth lens with positive power, the image side is convex; the sixth lens with negative power, the object side is in the near beam Convex at the optical axis and concave at the near optical axis on the image side. The wide-angle lens has uniform distribution of pixels in the full field of view, and has the advantages of large target surface, small size, light weight, small distortion and high image quality.

Description

technical field [0001] The invention relates to the technical field of optical lenses, in particular to a wide-angle lens. Background technique [0002] With the continuous improvement of people's income and living standards, the consumption demand for photography has also undergone diverse changes. The field of view of traditional lenses is small, which can satisfy the pursuit of details by high-end photographers. However, most people use it to record the details of life, and with the development of the mobile Internet, photos and videos show a trend of sharing on the Internet, so wide-angle lenses are favored by some big shots who like to record life. At the same time, whether it is a mobile phone camera, a smart door lock, or a Vlog application, a wider field of view is required to record more information. [0003] The current wide-angle lens generally has distortion problems, and because the focal length of the wide-angle lens is short, the surrounding light will have ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0015G02B13/0045G02B13/06G03B30/00
Inventor 高博李伟娜鲍海江
Owner JIANGXI LIANCHUANG ELECTRONICS CO LTD
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