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Camera lens group

A camera lens, lens technology, applied in optical components, instruments, optics, etc., can solve problems such as poor imaging quality, and achieve the effect of reducing noise and improving imaging effects

Active Publication Date: 2021-08-03
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a camera lens group to solve the problem of poor imaging quality in the camera lens group in the prior art

Method used

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Experimental program
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Effect test

Embodiment 1

[0062] like Figure 1 to Figure 25 As shown, the imaging lens group includes the first lens E1, the second lens E2 with negative refractive power, the third lens E3, the fourth lens E4, and the fifth lens E4 with positive refractive power along the optical axis from the object side to the image side. For the lens E5 and the sixth lens E6, 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. The on-axis distance TTL from the object side of the first lens to the imaging surface, the half ImgH of the diagonal length of the effective pixel area on the imaging surface and the aperture value Fno of the imaging lens group satisfy: 3.5<TTL / ImgH*Fno<4; The half ImgH of the diagonal length of the effective pixel area on the imaging surface, the effective focal length f of the imaging lens group, and the maximum half field of view Semi-FOV of the imaging lens group meet: 4.6<f / ImgH / TAN(Semi-FOV) <5.3.

[0063] Prefera...

Embodiment 2

[0084] The imaging lens group includes first lens E1, second lens E2 with negative refractive power, third lens E3, fourth lens E4, fifth lens E5 with positive refractive power and In the sixth lens E6, the object side S5 of the second lens is convex, and the image side S6 of the second lens is concave. The effective focal length f of the imaging lens group, the axial distance BFL from the image side of the sixth lens to the imaging surface, and the aperture value Fno of the imaging lens group satisfy: 3<f / BFL / Fno<3.8; effective pixel area on the imaging surface Half of the diagonal length ImgH, the effective focal length f of the imaging lens group and the maximum semi-FOV of the imaging lens group satisfy: 4.6<f / ImgH / TAN(Semi-FOV)<5.3.

[0085] Preferably, 3.3

[0086] Preferably, 4.7

[0087] Through reasonable distribution of optical power, astigmatism and distortion can be effectively reduced, and the imaging quality of the camer...

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Abstract

The invention provides a camera lens group. The camera lens group sequentially comprises, from an object side to an image side along an optical axis, a first lens, a second lens with negative 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 concave surface, a third lens, a fourth lens, a fifth lens with positive focal power, and a sixth lens, wherein the on-axis distance TTL from the object side surface to the imaging surface of the first lens, the half ImgH of the diagonal length of an effective pixel area on the imaging surface and the aperture value Fno of the camera lens group meet the condition that TTL / ImgH * Fno is greater than 3.5 and less than 4; and the half ImgH of the diagonal length of an effective pixel area on the imaging surface, the effective focal length f of the camera lens group and the maximum semi field-of-view Semi-FOV of the camera lens group meet the following condition: f / ImgH / TAN (Semi-FOV) is greater than 4.6 and less than 5.3. According to the invention, the problem of poor imaging quality of the camera lens group in the prior art 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] With the development of society and the advancement of technology, people have higher and higher requirements for mobile phone cameras. Many mobile phone manufacturers regard the shooting ability as one of the most important performance indicators of mobile phones. Currently, telephoto, wide-angle, macro, and large aperture Lenses such as large image surfaces have become the standard equipment for mobile phone cameras. However, there are still some problems in the camera lens group used in existing mobile phones. For example, when shooting objects at a distance, the imaging effect is not clear enough; when shooting in a dark environment, the noise is high, and the imaging effect is not enough. ideal. [0003] That is to say, the imaging lens group in the prior art has the problem of poor imaging qual...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B13/18
Inventor 牛乐张晓彬闻人建科戴付建赵烈烽
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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