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Optical Lenses and Imaging Equipment

A technology of optical lens and optical total length, which is applied in the field of imaging lens, can solve the problem of not being able to better meet the needs of long focal length and high pixel use, and achieve the effect of long focal length, high pixel and compact structure of the lens

Active Publication Date: 2021-11-19
JIANGXI LIANYI OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the common five-piece optical lens has good optical performance, it cannot meet the needs of long focal length and high pixels.

Method used

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  • Optical Lenses and Imaging Equipment
  • Optical Lenses and Imaging Equipment
  • Optical Lenses and Imaging Equipment

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0077] see figure 1 , which is a schematic diagram of the structure 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 stop ST, a first lens L1, a second lens L2, The third lens L3, the fourth lens L4, the fifth lens L5 and the filter G1.

[0078] The first lens L1 has positive 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 at the near optical axis;

[0079] 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;

[0080] 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 at the near optical axis;

[0081] The fourth lens L4 has posit...

no. 2 example

[0096] see Figure 6 , which is a schematic structural view of the optical lens 200 provided in this embodiment, the structure of the optical lens 200 provided in the second embodiment of the present invention is roughly the same as that of the optical lens 100 in the first embodiment, the difference is that the first lens The image side S2 of the lens is convex at the near optical axis, and the curvature radius, thickness, and material selection of each lens are different.

[0097] Specifically, relevant parameters of each lens in the optical lens 200 provided in this embodiment are shown in Table 3.

[0098] table 3

[0099]

[0100] The surface coefficients of each aspheric surface of the optical lens 200 in this embodiment are shown in Table 4.

[0101] Table 4

[0102]

[0103] In this embodiment, the graphs of the astigmatism curve, optical distortion, vertical chromatic aberration and axial chromatic aberration of the optical lens 200 are as follows Figure 7 ...

no. 3 example

[0109] see Figure 11 , which is a schematic view showing the structure of the optical lens 300 provided in this embodiment, the structure of the optical lens 300 provided in the third embodiment of the present invention is roughly the same as that of the optical lens 100 in the first embodiment, the difference is that each lens The radius of curvature, thickness, and material selection are different.

[0110] The relevant parameters of each lens in the optical lens 300 provided in this embodiment are shown in Table 5.

[0111] table 5

[0112]

[0113] Table 6 shows the surface coefficients of each aspheric surface of the optical lens 300 in this embodiment.

[0114] Table 6

[0115]

[0116] In this embodiment, the graphs of the astigmatism curve, optical distortion, vertical chromatic aberration and axial chromatic aberration of the optical lens 300 are as follows Figure 12 , Figure 13 , Figure 14 and Figure 15 shown.

[0117] Figure 12 The astigmatism c...

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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 diaphragm; a first lens with positive refractive power, the object side is a convex surface, and the image side is on the low beam. The axis is convex or concave; the second lens with negative power has a convex object side and the image side is concave; the third lens with negative power has a concave object side and the image side is near the optical axis The fourth lens with positive refractive power has a concave surface on the object side and a convex surface on the image side; the fifth lens with negative refractive power has a concave surface on the object side at the near optical axis and a convex surface on the image side; Wherein, the first lens, the second lens, the third lens, the fourth lens and the fifth lens are all aspherical lenses. The optical lens has at least the advantages of high pixel and long focal length.

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 and cameras), coupled with the popularity of social networking, video, and live broadcast software, people are more and more fond of photography, and camera lenses have become standard equipment for electronic devices. , The camera lens has even become the first indicator that consumers consider 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, full-screen, ultra-high-definition imaging, etc., which puts forward higher requirements for camera lenses mounted on portable electronic devices. Although the common five-element optical lens has good opti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0015G02B13/0045G03B30/00
Inventor 曾昊杰于笑枝曾吉勇
Owner JIANGXI LIANYI OPTICS CO LTD
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