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Large wide-angle thin imaging lens

An imaging lens, large wide-angle technology, applied in the direction of optical components, optics, instruments, etc., can solve the problems of insufficient chromatic aberration correction ability, inability to guarantee imaging quality, sensitivity to chromatic aberration and aberration, etc., to achieve large viewing angle and chromatic aberration correction ability , High chromatic aberration correction ability, satisfying the effect of miniaturization

Pending Publication Date: 2021-11-30
HUIZHOU SAGETECH OPTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the development trend of today's smart electronic products is thinning, which has higher requirements for the volume of optical imaging lenses. As the size of optical imaging lenses remains the same or even becomes smaller, the pixel size of the photosensitive element must also be reduced. Improve the resolution, the smaller pixel size is more sensitive to chromatic aberration and aberration, the existing optical imaging lens does not have enough chromatic aberration correction ability, and cannot guarantee the imaging quality while miniaturizing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0055] Please combine Figure 1 to Figure 4 , in the first embodiment, the large wide-angle thin imaging lens satisfies Table 1-1, Table 1-2 and Table 1-3.

[0056] Table 1-1 is the basic parameters of the large wide-angle thin imaging lens of the first embodiment. It should be noted that f in the table is the focal length of the lens, FNO is the aperture of the large wide-angle thin imaging lens, and Fov is the field of view of the lens :

[0057]

[0058] Table 1-2 is the aspheric coefficient of each lens in the first embodiment:

[0059]

[0060]

[0061] Table 1-3 is the value of each conditional expression in the first embodiment:

[0062]

no. 2 example

[0064] Please combine Figure 5 to Figure 8 The large wide-angle thin imaging lens of this embodiment mainly includes a first lens 21, a diaphragm 20, a second lens 22, a third lens 23, a fourth lens 24, a fifth lens 25, And filter 26.

[0065] It should be understood that the large wide-angle thin imaging lens in the second embodiment satisfies the expressions in the above-mentioned first embodiment, and details are not repeated here.

[0066] In the second embodiment, the wide-angle thin imaging lens satisfies Table 2-1, Table 2-2 and Table 2-3.

[0067] Table 2-1 is the basic parameters of the large wide-angle thin imaging lens of the second embodiment:

[0068]

[0069]

[0070] Table 2-2 is the aspheric coefficient of each lens in the second embodiment:

[0071]

[0072] Table 2-3 is the value of each conditional expression in the second embodiment:

[0073]

no. 3 example

[0075] Please combine Figure 9 to Figure 12 The large wide-angle thin imaging lens of this embodiment mainly includes a first lens 31, a diaphragm 30, a second lens 32, a third lens 33, a fourth lens 34, a fifth lens 35, and filter 36.

[0076] It should be understood that the large wide-angle thin imaging lens in the third embodiment satisfies the expressions in the above-mentioned first embodiment, and details are not repeated here.

[0077] In the third embodiment, the wide-angle thin imaging lens satisfies Table 3-1, Table 3-2 and Table 3-3.

[0078] Table 3-1 is the basic parameters of the large wide-angle thin imaging lens of the third embodiment:

[0079]

[0080]

[0081] Table 3-2 is the aspheric coefficient of each lens in the third embodiment:

[0082]

[0083] Table 3-3 is the value of each conditional expression in the third embodiment:

[0084]

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Abstract

The invention relates to a large-wide-angle thin imaging lens which is composed of five lenses which are the first lens, the second lens, the third lens, the fourth lens and the fifth lens in sequence from the object side to the image side. The large wide angle thin imaging lens satisfies the following relational expression: LD / sin (H-FOV) < / = 0.88, wherein LD is the half diameter of the first lens, and H-FOV is a half of the maximum field angle of the large wide angle thin imaging lens. The lens has the advantages of miniaturization, a large aperture, a large visual angle and a high chromatic aberration correction capability, and can meet the shooting requirements of a user.

Description

technical field [0001] The invention relates to the technical field of optical imaging lenses, in particular to a large wide-angle thin imaging lens. Background technique [0002] At present, photographing and video recording have become one of the standard functions of smart electronic products. With the widespread use of smart electronic products, users have higher and higher requirements for photographing functions. At present, the needs of users are mainly to take selfie photos with a wide viewing angle and landscape photos with a large depth of field. In order to meet this demand, the optical imaging lens used with electronic products needs to have a large viewing angle, large aperture and high resolution. However, the development trend of today's smart electronic products is thinner, which has higher requirements for the volume of optical imaging lenses. As the size of optical imaging lenses remains the same or even becomes smaller, the pixel size of the photosensitive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0045G02B13/06G02B13/18
Inventor 陈龙泉
Owner HUIZHOU SAGETECH OPTRONICS CO LTD
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