Title:
WIDE-ANGLE LENS AND IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/033277
Kind Code:
A1
Abstract:
Provided in the present invention is a wide-angle lens, sequentially composed of, from an object side to an imaging surface, a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens, a sixth lens, a seventh lens and a light filter. The first lens satisfies the following conditional expressions: 1.5 < r1/r2 < 2.5, -2 < f1/f < -1, 0 <ωD/ωmax < 0.6, and 2 < LD/Lmax < 3, wherein r1 and r2 respectively represent curvature radii of an object side surface and an image side surface of the first lens, f1 represents a focal length of the first lens, f represents a focal length of the wide-angle lens, ωD represents a surface inclination angle at an edge aperture of the object side surface of the first lens, and ωmax represents the maximum surface inclination angle in a full aperture of the object side surface of the first lens, LD represents a radial length of the position where the surface inclination angle at the edge aperture of the object side surface of the first lens is located, and Lmax represents a radial length of the position where the maximum surface inclination angle in a full aperture of the object side surface of the first lens is located. The wide-angle lens provided in the present invention has a small size, has a high resolution and carries out clear imaging of long-range objects. Further provided in the present invention is an imaging device.
Inventors:
WEI WENZHE (CN)
ZENG JIYONG (CN)
ZENG JIYONG (CN)
Application Number:
PCT/CN2021/107401
Publication Date:
February 17, 2022
Filing Date:
July 20, 2021
Export Citation:
Assignee:
JIANGXI LIANCHUANG ELECT CO LTD (CN)
International Classes:
G02B13/00; G02B13/06; G02B13/18
Foreign References:
| CN111650731A | 2020-09-11 | |||
| CN106772951A | 2017-05-31 | |||
| CN108089312A | 2018-05-29 | |||
| CN105974561A | 2016-09-28 | |||
| CN110095854A | 2019-08-06 | |||
| JP2016218242A | 2016-12-22 |
Attorney, Agent or Firm:
SHENZHEN ZHIQUAN INTELLECTUAL PROPERTY OFFICE (CN)
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