Title:
OPTICAL SYSTEM, CAMERA MODULE, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/178657
Kind Code:
A1
Abstract:
An optical system (10), comprising: a first lens (L1) having a positive refractive power, the object side surface (S1) proximate to an optical axis (101) being a convex surface, and an image side surface (S2) proximate to the optical axis (101) being a concave surface; a second lens (L2) having a negative refractive power, the object side surface (S3) proximate to the optical axis (101) being a convex surface, and the image side surface (S4) proximate to the optical axis (101) being a concave surface; a third lens (L3) having a positive refractive power, the object side surface (S5) proximate to the optical axis (101) being a convex surface; a fourth lens (L4); a fifth lens (L5), the image side surface (S10) proximate to the optical axis (101) being a convex surface; a sixth lens (L6), the image side surface (S12) proximate to the optical axis (101) being a concave surface; a seventh lens (L7), the object side surface (S13) proximate to the optical axis (101) being a convex surface, the image side surface (S14) proximate to the optical axis (101) being a concave surface, and both being aspheric surfaces, at least one of them having an inflection point. The optical system (10) further satisfies: 1.004 < f/TTL < 1.1; f being the effective focal length of the optical system (10), TTL being the total optical length of the optical system (10).
Inventors:
HUA LU (CN)
YANG JIAN (CN)
LI MING (CN)
YANG JIAN (CN)
LI MING (CN)
Application Number:
PCT/CN2021/077404
Publication Date:
September 01, 2022
Filing Date:
February 23, 2021
Export Citation:
Assignee:
OFILM GROUP CO LTD (CN)
JIANGXI JINGCHAO OPTICAL CO LTD (CN)
JIANGXI JINGCHAO OPTICAL CO LTD (CN)
International Classes:
G02B9/64; G02B13/00; G02B13/18
Foreign References:
| CN212540842U | 2021-02-12 | |||
| CN211826691U | 2020-10-30 | |||
| CN111736300A | 2020-10-02 | |||
| CN111552057A | 2020-08-18 | |||
| CN211293428U | 2020-08-18 | |||
| CN107678131A | 2018-02-09 | |||
| US20200249434A1 | 2020-08-06 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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