Title:
OPTICAL SYSTEM, PHOTOGRAPHING MODULE, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/160119
Kind Code:
A1
Abstract:
An optical system (10), comprising sequentially along an optical axis (101) from an object side to a lens side: a first lens (L1) having a positive focal power; a second lens (L2) having a negative focal power, the object-side surface (S3) thereof being a convex surface in proximity to the optical axis; a third lens (L3) having a negative focal power, the image-side surface (S6) thereof being a concave surface in proximity to optical axis; a fourth lens (L4) having positive focal power, the object-side surface (S7) thereof being a convex surface in proximity to the optical axis. The optical system (10) satisfies: 0.5 < SD42/ImgH < 0.85; ImgH > 4.0 mm; SD42 is the maximum effective radius of the image-side surface (S8) of the fourth lens (L4), and ImgH is half of the image height corresponding to the maximum field-of-view angle of the optical system (10).
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Inventors:
ZOU JINHUA (CN)
LI MING (CN)
LI MING (CN)
Application Number:
PCT/CN2021/073940
Publication Date:
August 04, 2022
Filing Date:
January 27, 2021
Export Citation:
Assignee:
OFILM GROUP CO LTD (CN)
JIANGXI JINGCHAO OPTICAL CO LTD (CN)
JIANGXI JINGCHAO OPTICAL CO LTD (CN)
International Classes:
G02B9/36; G02B13/18
Foreign References:
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| TW201209472A | 2012-03-01 | |||
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| US20100149659A1 | 2010-06-17 | |||
| US20120044403A1 | 2012-02-23 | |||
| US20190011668A1 | 2019-01-10 | |||
| US20100020417A1 | 2010-01-28 | |||
| TW201005346A | 2010-02-01 | |||
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| CN101776788A | 2010-07-14 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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