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Optical lens and imaging equipment

An optical lens and lens technology, applied in the field of imaging lens, to achieve the effect of overall length, good imaging quality, and compact structure

Pending Publication Date: 2021-08-10
JIANGXI LIANYI OPTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, the object of the present invention is to propose an optical lens and an imaging device to solve the technical problem that the optical lens cannot better realize the balance of miniaturization and wide viewing angle in the prior art

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0068] 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.

[0069] The first lens L1 has negative refractive power, the object side S1 of the first lens is a convex surface at the near optical axis, and the image side S2 of the first lens is a concave surface;

[0070] The second lens L2 has positive refractive power, the object side S3 of the second lens is convex, and the image side S4 of the second lens is convex;

[0071] The third lens L3 has negative refractive power, the object side S5 of the third lens is convex at the near optical axis, and the image side S6 of the third lens is concave;

[0072] The fourth lens L4 has positive refractive power, the object side S7 of the ...

no. 2 example

[0088] The structure of the optical lens in this embodiment is roughly the same as that of the optical lens 100 in the first embodiment, except that the radius of curvature and material selection of each lens are different.

[0089] The relevant parameters of each lens in the optical lens provided in this embodiment are shown in Table 3.

[0090] table 3

[0091]

[0092]

[0093] The surface coefficients of each aspheric surface of the optical lens in this embodiment are shown in Table 4.

[0094] Table 4

[0095]

[0096]

[0097] Please refer to Figure 5 , Image 6 with Figure 7 , respectively show the field curvature curve, the vertical axis chromatic aberration curve and the axial chromatic aberration curve of the optical lens of this embodiment.

[0098] Figure 5 Indicates the degree of curvature of the meridional image plane and sagittal image plane. from Figure 5 It can be seen from the figure that the field curvature of the meridian image plane...

no. 3 example

[0102] The structure of the optical lens in this embodiment is roughly the same as that of the optical lens 100 in the first embodiment, except that the radius of curvature and material selection of each lens are different.

[0103] The relevant parameters of each lens in the optical lens provided in this embodiment are shown in Table 5.

[0104] table 5

[0105]

[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 8 , Figure 9 with Figure 10 , respectively show the field curvature curve, the vertical axis chromatic aberration curve and the axial chromatic aberration curve of the optical lens of this embodiment.

[0111] Figure 8 Indicates the degree of curvature of the meridional image plane and sagittal image plane. from Figure 8 It can be seen from the figure that the field curvature of the meridian image plane and the sagittal...

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Abstract

The invention discloses an optical lens and imaging equipment. The optical lens sequentially comprises, 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 in a paraxial region, and the image-side surface is a concave surface; a diaphragm; 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 convex surface; a third lens with negative focal power, wherein the object side surface of the third lens near the optical axis is a convex surface, and the image side surface of the third lens is a concave 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; and a fifth lens with negative refractive power, wherein the object-side surface of the sixth lens is a convex surface in a paraxial region and has at least one inflection point, and the image-side surface of the sixth lens is a concave surface in a paraxial region and has at least one inflection point. According to the optical lens, lens miniaturization and balance of a wide viewing angle can be well 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] Optical lens is an important part of the optical imaging system, and it is one of the standard configurations of terminals such as mobile phones, tablets, security monitoring equipment, and driving recorders. In recent years, with the continuous development of mobile information technology, the demand for terminals has continued to increase, and the number of lenses mounted on terminals has also increased. [0003] With users' enthusiasm for thinner and lighter terminals, and in pursuit of better imaging effects, this requires optical lenses to meet both miniaturization and wide viewing angles. However, among the existing technologies, none of the optical lenses currently on the market can A good balance between miniaturization and wide viewing angle leads to the sacrifice of the viewing angle after real...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0045G02B13/18G02B13/06
Inventor 于笑枝曾昊杰刘绪明曾吉勇
Owner JIANGXI LIANYI OPTICS CO LTD
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