Imaging lens group

A lens group, imaging technology, applied in optical components, optics, instruments, etc., can solve the problems of wide-angle, ultra-thin, high image quality and small aberration at the same time

Pending Publication Date: 2022-03-11
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide an imaging lens group to solve the problems o

Method used

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Experimental program
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Embodiment 1

[0061] Such as Figure 1 to Figure 40 As shown, the imaging lens group includes in sequence from the object side to the imaging side along the optical axis: a first lens with a refractive power, a second lens with a refractive power, a third lens with a positive refractive power, and a lens with a positive refractive power. The fourth lens, the fifth lens with refractive power, the sixth lens with negative refractive power, the object side of the fourth lens is convex; the object side of the fifth lens is convex, and the imaging side is convex; the sixth lens The side of the object is a concave surface, and the imaging side is a concave surface; wherein, the on-axis distance TTL from the object side of the first lens to the imaging surface and half ImgH of the diagonal length of the effective pixel area on the imaging surface satisfy: TTL / ImgH≤1.3; The effective focal length f of the imaging lens set and the entrance pupil diameter EPD of the imaging lens set satisfy: f / EPD≤1....

Embodiment 2

[0077] Such as Figure 1 to Figure 40 As shown, the imaging lens group includes a first lens with refractive power, a second lens with refractive power, a third lens with positive refractive power, and a third lens with positive refractive power from the object side to the imaging side along the optical axis. Four lenses, a fifth lens with power and a sixth lens with negative power, the object side of the fourth lens is convex; the object side of the fifth lens is convex, and the imaging side is convex; the object side of the sixth lens The side is concave, and the imaging side is concave; wherein, the maximum field of view FOV of the imaging lens group satisfies: FOV>80°; the effective focal length f of the imaging lens group and the entrance pupil diameter EPD of the imaging lens group satisfy: f / EPD ≤1.8.

[0078] Preferably, FOV > 81°.

[0079] Both the third lens and the fourth lens are positive lenses, which can effectively control the deflection angle of the overall l...

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Abstract

The invention provides an imaging lens group. The imaging lens group sequentially comprises a first lens, a second lens, a third lens and a fourth lens from the object side to the imaging side along the optical axis, a second lens with focal power; the third lens has positive focal power; the object side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the imaging side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface, and the imaging side surface of the sixth lens is a concave surface; wherein the on-axis distance TTL from the object side surface of the first lens to the imaging surface and the half ImgH of the diagonal length of an effective pixel area on the imaging surface meet the following condition: TTL/ImgH is less than or equal to 1.3; and the effective focal length f of the imaging lens group and the entrance pupil diameter EPD of the imaging lens group meet the condition that f/EPD is less than or equal to 1.8. According to the invention, the problem that the wide angle, ultra-thin, high image quality and small aberration of an imaging lens group in the prior art are difficult to consider at the same time is solved.

Description

technical field [0001] The present invention relates to the technical field of optical imaging equipment, in particular to an imaging lens group. Background technique [0002] In recent years, with the advancement of science and technology, people pay more and more attention to the imaging quality of the imaging lens group of mobile phones, and the requirements for the resolution of the imaging lens group mounted on the mobile phone are also getting higher and higher, and mobile phone lenses with high imaging quality are becoming more and more Get people's favor. However, due to the continuous development of mobile phone products towards thinner, lighter and portable products, the total optical length of the imaging lens group on the mobile phone is getting shorter and shorter, which makes the design more difficult and the degree of freedom of design is greatly reduced. In order to meet the requirements of miniaturization, the imaging lens sets on most mobile phones are con...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B13/18G03B30/00
Inventor 张韵姚嘉诚唐梦娜吕赛锋戴付建赵烈烽
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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