Title:
OPTICAL SYSTEM, INFRARED RECEIVING MODULE, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/183473
Kind Code:
A1
Abstract:
An optical system (200), comprising: a first lens (L1) having a positive refractive power, the image side (S2) of the first lens (L1) being convex at the paraxial region (110); a second lens (L2) having a refractive power, the object side (S3) of the second lens (L2) being convex at the paraxial region (110); and a third lens (L3) having a refractive power, the image side (S6) of the third lens (L3) being convex at the paraxial region (110); the optical system (100) meets the conditions 1.4≤FNO≤1.8; 0.8≤TT/f≤1.0; FNO is the aperture number of the optical system (200), TT is the distance from the object side surface (S1) of the first lens (L1) to the image side surface (S6) of the third lens (L3) at the optical axis (110), and f is the effective focal length of the optical system (200). The present optical system (200) has sufficient light throughput, and can meet the requirements for miniaturised design.
Inventors:
ZOU JINHUA (CN)
LI MING (CN)
LIU BINBIN (CN)
LI MING (CN)
LIU BINBIN (CN)
Application Number:
PCT/CN2021/079257
Publication Date:
September 09, 2022
Filing Date:
March 05, 2021
Export Citation:
Assignee:
OFILM GROUP CO LTD (CN)
JIANGXI JINGCHAO OPTICAL CO LTD (CN)
JIANGXI JINGCHAO OPTICAL CO LTD (CN)
International Classes:
G02B13/00; G02B13/18
Foreign References:
| CN108020906A | 2018-05-11 | |||
| CN106970459A | 2017-07-21 | |||
| CN112558273A | 2021-03-26 | |||
| JP2003322792A | 2003-11-14 | |||
| CN112987252A | 2021-06-18 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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