Optical imaging lens

An optical imaging lens and lens technology, applied in optics, optical components, instruments, etc., can solve the problem of increasing the overall size of the lens, and achieve the effect of good imaging quality

Pending Publication Date: 2022-01-28
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the degree of freedom of the optical system is improved and the lens has better imaging quality by increasing the number of lenses. However, the overall size of the lens will also increase with the increase of the number of lenses.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] Refer to the following Figure 1 to Figure 2D An optical imaging lens according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application is shown.

[0092] like figure 1As shown, the optical imaging lens includes in sequence from the object side to the image side along the optical axis: the first lens E1, the diaphragm STO, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens Lens E6, seventh lens E7 and filter E8.

[0093] The first lens E1 has negative refractive power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has positive refractive power, its object side S3 is convex, and its image side S4 is convex. The third lens E3 has negative refractive power, its object side S5 is convex, and its image side S6 is concave. The fourth lens E4 has positive refractive power, it...

Embodiment 2

[0105] Refer to the following Figure 3 to Figure 4D An optical imaging lens according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted. image 3 A schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application is shown.

[0106] like image 3 As shown, the optical imaging lens includes in sequence from the object side to the image side along the optical axis: the first lens E1, the diaphragm STO, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens Lens E6, seventh lens E7 and filter E8.

[0107] The first lens E1 has negative refractive power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has positive refractive power, its object side S3 is convex, and its image side S4 is convex. The third lens E3 has nega...

Embodiment 3

[0116] Refer to the following Figure 5 to Figure 6D An optical imaging lens according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application is shown.

[0117] like Figure 5 As shown, the optical imaging lens includes in sequence from the object side to the image side along the optical axis: the first lens E1, the diaphragm STO, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens Lens E6, seventh lens E7 and filter E8.

[0118] The first lens E1 has negative refractive power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has positive refractive power, its object side S3 is convex, and its image side S4 is convex. The third lens E3 has negative refractive power, its object side S5 is convex, and its image side S6 is concave. The fourth lens E4 has positive refractive power,...

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PUM

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Abstract

The invention discloses an optical imaging lens which sequentially comprises, from an object side to an image side along an optical axis, a first lens having focal power; a second lens having 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 having focal power; a fourth lens having focal power; a fifth lens having negative focal power; a sixth lens having focal power; and a seventh lens having focal power. The effective focal length f of the optical imaging lens and the entrance pupil diameter (EPD) of the optical imaging lens meet the condition that f/EPD is less than 1.5. The distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens along the optical axis, the half ImgH of the diagonal length of an effective pixel area on the imaging surface and the half Semi-FOV of the maximum field angle of the optical imaging lens meet the following condition: TTL/(ImgH * TAN (Semi-FOV)) < 1.7.

Description

technical field [0001] The present application relates to the field of optical elements, more specifically, to an optical imaging lens. Background technique [0002] In recent years, with the rapid development of smart phones, the development trend of high pixel, large aperture and large image area of ​​the camera is obvious, so it is necessary to design a mobile phone lens with higher image quality, larger aperture and larger image area to adapt to market development. At present, the degree of freedom of the optical system is improved and the imaging quality of the lens is improved by increasing the number of lenses. However, the overall size of the lens will also increase with the increase of the lens. Therefore, how to design a lens with higher imaging quality, capable of matching higher pixel sensors and stronger image processing technology while the lens size remains the same or even becomes smaller has become an urgent problem to be solved. Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18G02B1/00
CPCG02B13/0045G02B1/00G03B30/00
Inventor 徐鑫垚吕赛锋戴付建赵烈烽
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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