Optical imaging system

An optical imaging system, optical axis technology, applied in optics, optical components, instruments, etc., can solve problems such as off-axis aberration correction

Pending Publication Date: 2019-12-20
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the lens of portable electronic products such as mobile phones is basically composed of aspheric surface type, which is a rotationally symmetrical spherical surface with a high degree of freedom in the meridian plane, and can correct the aberration on the axis, but However, it is difficult to correct off-axis aberrations, thus limiting the improvement of image quality

Method used

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Embodiment 1

[0083] Refer to the following Figure 1 to Figure 2 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.

[0084] 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 diaphragm STO, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens E6, Filter E7 and imaging surface S15.

[0085] The first lens E1 has negative refractive power, its object side S1 is concave, 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 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 refractive power, its object side ...

Embodiment 2

[0104] Refer to the following Figure 3 to Figure 4 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.

[0105] 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 diaphragm STO, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens E6, Filter E7 and imaging surface S15.

[0106] The first lens E1 has negative refractive power, its object side S1 is concave, 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 refractiv...

Embodiment 3

[0120] Refer to the following Figure 5 to Figure 6 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.

[0121] 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 diaphragm STO, the third lens E3, the fourth lens E4, the fifth lens E5, the sixth lens E6, Filter E7 and imaging surface S15.

[0122] The first lens E1 has negative refractive power, its object side S1 is concave, 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 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 refractive power, its object sid...

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PUM

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Abstract

The present application discloses an optical imaging system. The optical imaging system comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens that have a focal power and are arranged from an object side to an image side along an optical axis; at least one of mirror surfaces from the object side surface of the first lens to the image side surface of the sixth lens is a non-rotationally symmetric aspheric surface; the optical imaging system has an X-axis direction and a Y-axis direction that are perpendicular to each other in the plane perpendicular tothe optical axis; and in the Y-axis direction, half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging system and half of the maximum field angle Semi-FoV of the optical imaging system satisfy the following conditions: ImgH>4mm, and Semi-FOV>60 DEG.

Description

technical field [0001] The present application relates to the field of optical elements, in particular, to an optical imaging system. Background technique [0002] The imaging quality, size of the image plane, and field of view of the lens of portable electronic products such as mobile phones are important indicators to measure the performance of portable electronic products such as mobile phones. At present, the lenses of portable electronic products such as mobile phones are basically composed of aspheric surfaces. This surface is a rotationally symmetrical spherical surface with a high degree of freedom in the meridian plane, which can correct the aberration on the axis. However, it is difficult to correct off-axis aberrations, thus limiting the improvement of image quality. Contents of the invention [0003] One aspect of the present application provides such an optical imaging system, the optical imaging system includes sequentially from the object side to the image ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B13/06
Inventor 李洋贺凌波戴付建赵烈烽
Owner ZHEJIANG SUNNY OPTICAL CO LTD
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