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optical imaging system

An optical imaging system and optical axis technology, applied in optics, optical components, instruments, etc., can solve the problems of optical imaging system design difficulty, increase the difficulty of optical imaging system design, and small degree of freedom in optical imaging system design, and achieve miniaturization Image quality, good image quality, effect of optimizing optical parameters

Active Publication Date: 2022-05-03
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to be compatible with portable electronic products such as mobile phones, the optical imaging system mounted on mobile phones and other products has begun to gradually develop in the direction of miniaturization and thinning while ensuring the imaging quality, which will undoubtedly lead to the development of optical imaging systems. more difficult to design
At the same time, with the improvement of image sensor performance and the reduction of size, the design freedom of the corresponding optical imaging system is getting smaller and smaller, which will also increase the difficulty of designing the optical imaging system.

Method used

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Embodiment 1

[0075] Refer to the following Figure 1 to Figure 2C An optical imaging system according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of an optical imaging system according to Embodiment 1 of the present application is shown.

[0076] Such as figure 1 As shown, the optical imaging system includes in sequence from the object side to the image side: the first lens E1, the second lens E2, the third lens E3, the diaphragm STO, the fourth lens E4, the fifth lens E5, the sixth lens E6, The seventh lens E7, the filter E8 and the imaging surface S17.

[0077] The first lens E1 has positive refractive power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has negative refractive power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has positive refractive power, its object side S5 is convex, and its image side S6 is concave. The fourth lens E4 has negative refr...

Embodiment 2

[0092] Refer to the following Figure 3 to Figure 4C An optical imaging system 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 system according to Embodiment 2 of the present application is shown.

[0093] Such as image 3 As shown, the optical imaging system includes in sequence from the object side to the image side: the first lens E1, the second lens E2, the third lens E3, the diaphragm STO, the fourth lens E4, the fifth lens E5, the sixth lens E6, The seventh lens E7, the filter E8 and the imaging surface S17.

[0094] The first lens E1 has positive 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 concave. The third l...

Embodiment 3

[0107] Refer to the following Figure 5 to Figure 6C An optical imaging system according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging system according to Embodiment 3 of the present application is shown.

[0108] Such as Figure 5 As shown, the optical imaging system includes in sequence from the object side to the image side: the first lens E1, the second lens E2, the third lens E3, the diaphragm STO, the fourth lens E4, the fifth lens E5, the sixth lens E6, The seventh lens E7, the filter E8 and the imaging surface S17.

[0109] The first lens E1 has positive refractive power, its object side S1 is convex, and its image side S2 is concave. The second lens E2 has negative refractive power, its object side S3 is convex, and its image side S4 is concave. The third lens E3 has positive refractive power, its object side S5 is convex, and its image side S6 is convex. The fourth lens E4 has negative ref...

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Abstract

The present application discloses an optical imaging system, which sequentially includes from the object side to the image side along the optical axis: a first lens with a positive power; a second lens with a power; a third lens with a power A lens; a stop; a fourth lens with negative power; a fifth lens with positive power whose image side is concave; a sixth lens with power whose image side is convex; the seventh lens. At least one of the mirror surfaces from the object side of the first lens to the image side of the seventh lens is an aspheric mirror. The distance TTL from the object side of the first lens to the imaging surface of the optical imaging system on the optical axis and half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging system satisfy: TTL / ImgH<1.2; and optical imaging The maximum field of view FOV of the system and the distance SD from the diaphragm to the image side of the seventh lens on the optical axis meet: 2.5mm ‑1 <Tan(FOV) / SD<3.5mm ‑1 .

Description

technical field [0001] The present application relates to the field of optical elements, in particular, to an optical imaging system. Background technique [0002] With the development of society, portable electronic products such as smartphones and tablets have gradually become indispensable tools in people's daily life. In order to be compatible with portable electronic products such as mobile phones, the optical imaging system mounted on mobile phones and other products has begun to gradually develop in the direction of miniaturization and thinning while ensuring the imaging quality, which will undoubtedly lead to the development of optical imaging systems. Design is more difficult. At the same time, with the improvement of the performance and the reduction of the size of the image sensor, the design freedom of the corresponding optical imaging system is getting smaller and smaller, which will also increase the difficulty of designing the optical imaging system. Conten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B13/18G02B9/64
Inventor 杨泉锋袁莹辉戴付建赵烈烽
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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