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Ultra-wide-angle imaging system

An imaging system and ultra-wide-angle technology, applied in the field of image shooting and optical lenses, can solve problems such as strong spatial depth perception, and achieve the effect of wide scene range, increased spatial depth perception, and large coverage area.

Inactive Publication Date: 2020-04-17
广东省星聚宇光学股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention discloses an ultra-wide-angle imaging system, the purpose of which is to solve the problem that the existing optical imaging system cannot simultaneously meet the requirements of a wide shooting range and a strong sense of spatial depth

Method used

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Examples

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Embodiment 1

[0044] refer to figure 1 , the present invention discloses an ultra-wide-angle imaging system, in which a first lens L1, a diaphragm STO, a second lens L2, a third lens L3, a fourth lens L4 and a filter are arranged in sequence from the object side to the image side on the optical axis. Light sheet L5. The first lens L1 has an object-side surface S1 and an image-side surface S2, the second lens L2 has an object-side surface S3 and an image-side surface S4, the third lens L3 has an object-side surface S5 and an image-side surface S6, and the fourth lens L4 has The object-side surface S7 and the image-side surface S8, the filter L5 have an incident light plane S9 and an outgoing light plane S10, and the imaging surface S11 is located behind the outgoing light plane S10. Wherein, the image-side surface S2 of the first lens L1 is concave, the image-side surface S4 of the second lens L2 is convex, and the image-side surface S8 of the fourth lens L4 is convex. The stop STO can adj...

Embodiment 2

[0061] refer to Figure 5 , the present invention discloses an ultra-wide-angle imaging system, in which a first lens L1, a diaphragm STO, a second lens L2, a third lens L3, a fourth lens L4 and a filter are arranged in sequence from the object side to the image side on the optical axis. Light sheet L5. The first lens L1 has an object-side surface S1 and an image-side surface S2, the second lens L2 has an object-side surface S3 and an image-side surface S4, the third lens L3 has an object-side surface S5 and an image-side surface S6, and the fourth lens L4 has The object-side surface S7 and the image-side surface S8, the filter L5 have an incident light plane S9 and an outgoing light plane S10, and the imaging surface S11 is located behind the outgoing light plane S10. Wherein, the image-side surface S2 of the first lens L1 is concave, the image-side surface S4 of the second lens L2 is convex, and the image-side surface S8 of the fourth lens L4 is convex. The stop STO can ad...

Embodiment 3

[0072] refer to Figure 9 , the present invention discloses an ultra-wide-angle imaging system, in which a first lens L1, a diaphragm STO, a second lens L2, a third lens L3, a fourth lens L4 and a filter are arranged in sequence from the object side to the image side on the optical axis. Light sheet L5. The first lens L1 has an object-side surface S1 and an image-side surface S2, and the second lens L2 has an object-side surface S3 and an image-side surface S4. The third lens L3 has an object-side surface S5 and an image-side surface S6, and the fourth lens L4 has The object-side surface S7 and the image-side surface S8, the filter L5 have an incident light plane S9 and an outgoing light plane S10, and the imaging surface S11 is located behind the outgoing light plane S10. Wherein, the image-side surface S2 of the first lens L1 is concave, the image-side surface S4 of the second lens L2 is convex, and the image-side surface S8 of the fourth lens L4 is convex. The stop STO ca...

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Abstract

The invention discloses an ultra-wide-angle imaging system. The ultra-wide-angle imaging system sequentially comprises a first lens, a diaphragm, a second lens, a third lens, a fourth lens and an optical filter from an object side to an image side in the optical axis, the surface of the image side of the first lens is a concave surface, the surface of the image side of the second lens is a convexsurface, and the surface of the image side of the fourth lens is a convex surface. The total focal length of the four lenses is f; the focal length of the third lens is f3; and -3.5<f3 / f<7. Accordingto the invention, the lenses are large in coverage area and wide in shot scene range, the space depth sense of a shot picture can be increased, and it can be guaranteed that the front scene and the rear scene of a shot main body can be clearly reproduced on the picture.

Description

technical field [0001] The invention belongs to the field of optical lenses, and in particular relates to an ultra-wide-angle imaging system used in the field of image shooting. Background technique [0002] At present, in the field of image capture, it is difficult to meet the imaging requirements of large viewing angle and different depth of field imaging at the same time, and the optical imaging lens with clear pictures. Usually, if the imaging range is wide, the captured image is not clear enough; if a high-definition picture needs to be taken, the imaging range is narrow. Contents of the invention [0003] The invention discloses an ultra-wide-angle imaging system, which aims to solve the problem that the existing optical imaging system cannot meet the requirements of a wide shooting range and a strong sense of spatial depth at the same time. [0004] Technical scheme of the present invention is as follows: [0005] An ultra-wide-angle imaging system includes a firs...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/06
CPCG02B13/0015G02B13/0055G02B13/06
Inventor 孙加安王锋周明明马庆鸿万良伟
Owner 广东省星聚宇光学股份有限公司
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