Title:
OPTICAL SYSTEM, CAMERA MODULE, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/032426
Kind Code:
A1
Abstract:
An optical system, a camera module, and an electronic device. The optical system sequentially comprises, from an object side to an image side: a first lens (L1) having positive refractive power, and having an object-side surface (S1) which is a convex surface at a paraxial region, and an image-side surface (S2) which is a concave surface at the paraxial region, and is a convex surface at a circumferential region; a second lens (L2) having negative refractive power, and having an object-side surface (S3) which is a convex surface at the paraxial region, and an image-side surface (S4) which is a concave surface at the paraxial region; a third lens (L3) and a fourth lens (L4) having refractive power; a fifth lens (L5) having refractive power, and having an object-side surface (S9) which is a concave surface in the circumferential direction; a sixth lens (L6) having refractive power, at least one inflection point being provided on at least one of an object-side surface (S11) and an image-side surface (S12) of the sixth lens (L6); and a seventh lens (L7) having negative refractive power, and having an image-side surface (S14) which is a convex surface at the circumferential region, at least one inflection point being provided on at least one of an object-side surface (S13) and the image-side surface (S14) of the seventh lens (L7). By reasonably arranging surface types and refractive power of the first to seventh lenses, the total length of the optical system can be relatively short on the premise of not sacrificing the focal length, so that the design requirements of miniaturization and clear long-range photography are satisfied.
Inventors:
DANG XUWEN (CN)
LIU BINBIN (CN)
YANG JIAN (CN)
LI MING (CN)
ZOU HAIRONG (CN)
LIU BINBIN (CN)
YANG JIAN (CN)
LI MING (CN)
ZOU HAIRONG (CN)
Application Number:
PCT/CN2020/108118
Publication Date:
February 17, 2022
Filing Date:
August 10, 2020
Export Citation:
Assignee:
OFILM GROUP CO LTD (CN)
NANCHANG O FILM PREC OPTICAL PRODUCT CO LTD (CN)
NANCHANG O FILM PREC OPTICAL PRODUCT CO LTD (CN)
International Classes:
G02B13/18; G02B13/00
Foreign References:
| CN111142240A | 2020-05-12 | |||
| CN111239965A | 2020-06-05 | |||
| CN111413783A | 2020-07-14 | |||
| CN210982891U | 2020-07-10 | |||
| CN204359999U | 2015-05-27 | |||
| US20200241254A1 | 2020-07-30 | |||
| US20200103628A1 | 2020-04-02 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
Download PDF:
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