Title:
OPTICAL SYSTEM, CAMERA MODULE AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/174438
Kind Code:
A1
Abstract:
An optical system (10), comprising, sequentially from an object side to an image side along an optical axis (101), a first lens (L1) having a positive refractive power, an object side face (S1) of the first lens being convex near the optical axis, and an image side face (S2) thereof being concave near the optical axis; a second lens (L2) having a negative refractive power, an image side face (S4) of the second lens being concave near the optical axis; a third lens (L3); a fourth lens (L4); and a fifth lens (L5) having a negative refractive power, an image side face (S10) of the fifth lens being concave near the optical axis, and an image side face (S10) thereof having an inflection point. The optical system (10) satisfies the relationship: 1.0≤f12/f≤1.25, wherein f12 is the combined focal length of the first lens (L1) and the second lens (L2), and f is the effective focal length of the optical system (10).
Inventors:
XU BIAO (CN)
LI MING (CN)
SONG QI (CN)
LI MING (CN)
SONG QI (CN)
Application Number:
PCT/CN2021/077151
Publication Date:
August 25, 2022
Filing Date:
February 22, 2021
Export Citation:
Assignee:
OFILM GROUP CO LTD (CN)
JIANGXI JINGCHAO OPTICAL CO LTD (CN)
JIANGXI JINGCHAO OPTICAL CO LTD (CN)
International Classes:
G02B13/18; G02B9/60; G02B13/00
Foreign References:
| CN110488464A | 2019-11-22 | |||
| CN209486383U | 2019-10-11 | |||
| CN110297316A | 2019-10-01 | |||
| CN108398769A | 2018-08-14 | |||
| JP2020190674A | 2020-11-26 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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