Title:
OPTICAL IMAGING SYSTEM, IMAGE CAPTURING DEVICE HAVING SAME, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/142608
Kind Code:
A1
Abstract:
An optical imaging system (100), comprising an optical lens set. The optical lens set comprises a first lens (1), a second lens (2), a third lens (3), and a fourth lens (4) which are axially arranged in sequence; the object side surface of the first lens (1) is convex at the optical axis; the object side surface of the second lens (2) is convex at the optical axis and the image side surface is concave at the optical axis; the object side surface of the fourth lens (4) is convex at the optical axis and the image side surface is concave at the optical axis. The optical imaging system (100) satisfies TL/Imgh<1.5, TTL being the distance from the object side surface of the first lens (1) to the imaging surface at the optical axis, and Imgh being the half of the diagonal length of an effective pixel region of a photosensitive element.
Inventors:
ZHANG WENYAN (CN)
LIU BINBIN (CN)
LI MING (CN)
ZOU HAIRONG (CN)
LIU BINBIN (CN)
LI MING (CN)
ZOU HAIRONG (CN)
Application Number:
PCT/CN2020/071919
Publication Date:
July 22, 2021
Filing Date:
January 14, 2020
Export Citation:
Assignee:
NANCHANG OUFEI PREC OPTICAL PRODUCT CO LTD (CN)
International Classes:
G02B9/34; G02B13/18
Foreign References:
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Attorney, Agent or Firm:
JW&PARTNERS (CN)
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