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Lens assembly and mobile terminal

A lens assembly and lens group technology, which is applied to optical components, instruments, camera bodies, etc., can solve the problems of decreased imaging quality, compress the volume of optical imaging lenses, etc., and achieve the effect of shortening the thickness

Pending Publication Date: 2022-03-15
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In related technologies, in order to achieve ultra-thin smartphones, the optical imaging lens is developing towards miniaturization, and the number of lenses is usually reduced to compress the volume of the optical imaging lens, resulting in a decrease in imaging quality

Method used

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  • Lens assembly and mobile terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0123] Example 1: Figure 4A It is a schematic structural diagram of the lens assembly of the first embodiment shown according to an exemplary embodiment of the present disclosure. Figure 4B is shown according to an exemplary embodiment of the present disclosure Figure 4A Curves of spherical aberration, astigmatism and distortion. Table 1-1 shows aspheric lens coefficients of the first embodiment according to an exemplary embodiment of the present disclosure. Table 1-2 shows the aspheric coefficients of the first embodiment according to an exemplary embodiment of the present disclosure.

[0124] Such as Figure 4A and 4B , the aspheric lens coefficient (such as Table 1-1) and aspheric coefficient (such as Table 1-2) of this embodiment can be determined through the conditional formula of the above embodiment.

[0125] Figure 4B From left to right are Figure 4A The spherical aberration, astigmatism and distortion curves, through Figure 4B It can be seen that the lon...

Embodiment 2

[0132] Example 2: Figure 5A It is a schematic structural diagram of the lens assembly of the second embodiment shown according to an exemplary embodiment of the present disclosure. Figure 5B is shown according to an exemplary embodiment of the present disclosure Figure 5A Curves of spherical aberration, astigmatism and distortion. Table 2-1 shows the aspheric lens coefficients of the second embodiment according to an exemplary embodiment of the present disclosure. Table 2-2 shows the aspheric coefficients of the second embodiment shown according to an exemplary embodiment of the present disclosure.

[0133] Such as Figure 5A and 5B , the aspheric lens coefficient (such as Table 2-1) and the aspheric coefficient (such as Table 2-2) of the lens assembly of this embodiment can be determined through the conditional formula of the above embodiment.

[0134] Figure 5B From left to right are Figure 5A The spherical aberration, astigmatism and distortion curves, through ...

Embodiment 3

[0140] Example 3: Figure 6A It is a schematic structural diagram of a lens assembly according to a third embodiment shown according to an exemplary embodiment of the present disclosure. Figure 6B is shown according to an exemplary embodiment of the present disclosure Figure 6A Curves of spherical aberration, astigmatism and distortion. Table 3-1 shows aspheric lens coefficients of the third embodiment according to an exemplary embodiment of the present disclosure. Table 3-2 shows the aspheric coefficients of the third embodiment according to an exemplary embodiment of the present disclosure.

[0141] Such as Figure 6A and 6B , the aspheric lens coefficient (such as Table 3-1) and the aspheric coefficient (such as Table 3-2) of the lens assembly of this embodiment can be determined through the conditional formula of the above embodiment.

[0142] Figure 6B From left to right are Figure 6A The spherical aberration, astigmatism and distortion curves, through Figure 6...

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Abstract

The invention relates to a lens assembly and a mobile terminal, and the lens assembly comprises a lens group which comprises a plurality of lenses; the photosensitive element is positioned on the optical axis of the lens group and comprises an imaging surface; wherein the lens assembly determines lens parameters and aspheric coefficients of the plurality of lenses based on at least one of the following three conditional expressions: 1.16 lt; eFL / IMHlt; 1.3, 2, 3; 1.3 1t; tTL / TLlt; 1.7, 1.7; 1.2 1t; eFL / TLlt; 1.45, 1.45; wherein the EFL is the effective focal length of the lens assembly; iMH is half of the diagonal size of the imaging surface of the photosensitive element; tL is the distance from the object side surface to the image side surface of each lens in the lens group to the most protruding position closest to the photosensitive element along the optical axis direction; tTL is the distance from the object side surface of the lens closest to the object side in the lens group to the imaging surface of the photosensitive element on the optical axis. According to the lens assembly, on the premise that the optical performance is guaranteed, the thickness of each lens in the lens group and the distance between the lenses can be shortened, and then the thickness of the lens body can be shortened.

Description

technical field [0001] The invention relates to the technical field of electronic equipment, in particular to a lens assembly and a mobile terminal. Background technique [0002] As the specifications of consumer electronic products are constantly updated, especially mobile electronic devices such as smart phones (Smart Phone), the pursuit of miniaturization has never stopped. For optical imaging lenses, the most important characteristics are still imaging quality and volume. [0003] In related technologies, in order to achieve ultra-thin smartphones, the optical imaging lens is developing toward miniaturization, and the number of lenses is usually reduced to compress the volume of the optical imaging lens, resulting in a decrease in imaging quality. How to balance imaging quality and miniaturized optical imaging lens is a problem that needs to be considered. Contents of the invention [0004] In order to overcome the problems existing in the related technologies, the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18G03B17/12G03B30/00
CPCG02B13/0045G02B13/18G03B17/12
Inventor 尹志东
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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