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Wide-angle lenses and imaging equipment

A wide-angle lens and imaging surface technology, applied in the field of imaging lenses, can solve problems such as large distortion of wide-angle lenses, and achieve the effects of small distortion, fast matching, and reduced image quality deterioration.

Active Publication Date: 2021-11-23
JIANGXI LIANCHUANG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the purpose of the present invention is to provide a wide-angle lens and imaging equipment with high imaging quality and low distortion, which is used to solve the problem of large distortion of the above-mentioned wide-angle lens, and at the same time, the wide-angle lens can be applied to different solutions of large and small chips

Method used

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  • Wide-angle lenses and imaging equipment

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0076] see figure 1 , which is a schematic structural view 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 third lens L3, a The optical centers of the four lenses L4, the stop ST, the fifth lens L5, the sixth lens L6, the seventh lens L7, and the filter G1 are located on the same straight line.

[0077] Wherein, 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;

[0078] The second lens L2 has a negative 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;

[0079] The third lens L3 has negative refractive power, the object side S5 of the third lens is convex at the near optical axis, and t...

no. 2 example

[0093] see Figure 5 , is a schematic structural diagram of the wide-angle lens 200 provided in the second embodiment. The wide-angle lens 200 among the present embodiment is roughly the same as the wide-angle lens 100 among the first embodiment, and the difference is that the relevant parameters of each lens are different from those of the wide-angle lens 100 in the first embodiment; The object side S3 of the second lens is concave at the near optical axis, and the fifth lens L5 and the sixth lens L6 form a cemented lens and are both glass spherical lenses.

[0094] Please refer to Table 3, which shows the relevant parameters of each lens of the wide-angle lens 200 in this embodiment.

[0095] table 3

[0096]

[0097] Please refer to Table 4, which shows the relevant parameters of the aspheric surface of the wide-angle lens 200 in this embodiment.

[0098] Table 4

[0099]

[0100] see Figure 6 , Figure 7and Figure 8 , showing the vertical axis chromatic aber...

no. 3 example

[0102] see Figure 9 , is a schematic structural diagram of the wide-angle lens 300 provided in 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 object side S3 of the second lens is concave at the near optical axis.

[0103] Please refer to Table 5, which shows the relevant parameters of each lens of the wide-angle lens 300 in this embodiment.

[0104] table 5

[0105]

[0106] Please refer to Table 6, which shows the relevant parameters of the aspheric surface of the wide-angle lens 300 in this embodiment.

[0107] Table 6

[0108]

[0109] see Figure 10 , Figure 11 and Figure 12 , showing the vertical axis chromatic aberration curve, field curvature curve, and distortion curve of the wide-angle lens 300 provided by the first embodiment of the pr...

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Abstract

The invention discloses a wide-angle lens and an imaging device. The wide-angle lens sequentially comprises from the object side to the imaging surface along the optical axis: a first lens with negative optical power, the side surface of which is convex, and the image side is concave; and has negative optical power. The second lens, the object side is convex or concave at the near optical axis, and the image side is concave; the third lens with negative refractive power, the object side is convex at the near optical axis, and the image side is concave; Fourth lens with positive power, convex on object and image sides; stop; fifth lens with positive power, convex on object and image sides; sixth lens with negative power , the object side and the image side are both concave; the seventh lens with positive refractive power has a convex object side and a convex image side near the optical axis. The wide-angle lens at least has the advantages of high imaging quality and small distortion.

Description

technical field [0001] The invention relates to the technical field of imaging lenses, in particular to a wide-angle lens and imaging equipment. Background technique [0002] With the development of image sensor chip technology, higher requirements are placed on the quality of images and videos, and the development of mobile Internet enables photos and videos to be shared through the Internet to record every bit of life, and the intake area is also wider. , so that wide-angle lenses are more favored. Whether it is a mobile phone camera, a smart doorbell, or a Volg application, a wider viewing angle is required to record more information. [0003] Current wide-angle lenses generally have large distortion, and generally wide-angle lenses will show barrel-shaped distortion. Due to the short focal length of the wide-angle lens, the surrounding light will have a large compression deformation. Of course, the wide-angle lens has its unique perspective and sense of envelopment, b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/06G02B1/04
CPCG02B13/0015G02B13/0045G02B13/06G02B1/041
Inventor 高博李伟娜鲍海江曾吉勇
Owner JIANGXI LIANCHUANG ELECTRONICS CO LTD
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