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Pick-up lens

A camera lens and lens technology, applied in the field of camera lenses, can solve the problems of miniaturization and high imaging quality being difficult to achieve at the same time.

Active Publication Date: 2021-04-30
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 to solve the problem that the imaging lenses in the prior art are difficult to realize miniaturization and high imaging quality at the same time

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0067]Such asFigures 1 to 55 As shown, the optical axis edge to the object side of the imaging lens sequentially includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, and the first lens has a positive light. Poking; the second lens has a negative light; the side surface of the fifth lens is a convex surface; the seventh lens has a negative light; wherein the side surface of the first lens is on the shaft of the imaging surface of the imaging lens, the TTL, The effective pixel area of ​​the active pixel area on the imaging plane is satisfied between IMGH and the effective focal length f between the imgh and the imaging lens: 6mm<TTL * (IMGH / F)<7mm; the center thickness of the fourth lens CT4, the center thickness of the fifth lens CT5 and the fifth lens to the sixth lens on the air spacing T56 on the optical axis: 0.5<(CT4 + CT5) / T56 ≤ 1.3.

[0068]Through the rational arrangement of light, it can effectively reduce the li...

Embodiment 2

[0085]The first lens, the third lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens, the first lens, the first lens, the first lens, the first lens, the first lens, the first lens, the first lens. The second lens has a negative light; the side surface of the fifth lens is a convex surface; the seventh lens has a negative light; wherein the maximum effective radius of DT11 and the sixth lens side of the first lens are the largest effectiveness. The maximum effective radius DT72 of the radius DT61 and the seventh lens is satisfied: 0.3<2 * DT11 / (DT61 + DT72)<0.5; the center thickness of the fourth lens CT4, the center thickness of the fifth lens CT5 and the fifth lens to the sixth lens on the air spacing T56 on the optical axis: 0.5<(CT4 + CT5) / T56 ≤ 1.3.

[0086]By controlling 2 * DT11 / (DT61 + DT72) within a smaller range, it is possible to ensure that the entire optical system has a smaller size, ensuring miniaturization and lightness of th...

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Abstract

The invention provides a pick-up lens. The pick-up lens sequentially comprises a first lens having positive focal power, the second lens having negative focal power, a third lens, a fourth lens, a fifth lens having the object side surface being a convex surface, a sixth lens, and a seventh lens having negative focal power; the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens are successively arranged from the object side to the image side along the optical axis of the pick-up lens the on-axis distance TTL from the object side surface of the first lens to the imaging surface of the pick-up lens, half ImgH of the diagonal length of an effective pixel area on the imaging surface and the effective focal length f of the pick-up lens meet the following condition: TTL*(ImgH / f) is larger than 6mm and is less than 7mm; the center thickness CT4 of the fourth lens, the center thickness CT5 of the fifth lens, and the air space T56 of the fifth to sixth lenses on the optical axis satisfy the following condition: (CT4+CT5) / T56 is larger than 0.5 and is less than or equal to 1.3. According to the invention, the problem that miniaturization and high imaging quality of an imaging lens in the prior art are difficult to realize at the same time is solved.

Description

Technical field[0001]The present invention relates to the technical field of optical imaging equipment, and in particular, it relates to a camera lens.Background technique[0002]With the popularity of electronic products such as mobile phones and tablets, people's portable requirements for electronics are getting higher and higher. At the same time, as the performance of the CHARGE-COPLED DEVICE, CCD and the Complementary Metal-Oxide Semiconductor, CMOS image sensor decreases, the corresponding imaging lens also needs to meet high imaging quality. Requirements.[0003]That is, the imaging lens in the prior art is small and high-imaging quality is difficult to implement.Inventive content[0004]A primary object of the present invention is to provide an imaging lens to solve the problem of miniaturization and high imaging quality in the prior art.[0005]In order to achieve the above object, according to one aspect of the present invention, an image pickup lens is provided, and the optical a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B13/18G02B9/64G02B13/02
Inventor 张伊戴付建赵烈烽
Owner ZHEJIANG SUNNY OPTICAL CO LTD