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Patent Searching and Data


Title:
OPTICAL ZOOM SYSTEM, ZOOM MODULE AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/236663
Kind Code:
A1
Abstract:
An optical zoom system (10), comprising: a first lens group (G1), which comprises a first lens (L1) that has negative refractive power and a second lens (L2) that has positive refractive power, both an object side surface (S1) and an image side surface (S2) of the first lens (L1) being concave near an optical axis (101); a second lens group (G2), which comprises a third lens (L3) that has positive refractive power and a fourth lens (L4) that has negative refractive power, both an object side surface (S5) and an image side surface (S6) of the third lens (L3) being convex near the optical axis (101), and an object side surface (S7) of the fourth lens (L4) being concave near the optical axis (101); and a third lens group (G3), which comprises a fifth lens (L5) that has negative refractive power, an image side surface (S10) thereof being concave near the optical axis (101). At least one of the second lens group (G2) and the third lens group (G3) is able to move relative to the first lens group (G1).

Inventors:
HUA LU (CN)
YANG JIAN (CN)
LI MING (CN)
Application Number:
PCT/CN2021/093004
Publication Date:
November 17, 2022
Filing Date:
May 11, 2021
Export Citation:
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Assignee:
OFILM GROUP CO LTD (CN)
JIANGXI JINGCHAO OPTICAL CO LTD (CN)
International Classes:
G02B13/18; G02B15/14
Foreign References:
CN112630947A2021-04-09
CN112230404A2021-01-15
CN112731636A2021-04-30
JP2006003544A2006-01-05
CN112213846A2021-01-12
CN101000402A2007-07-18
CN113296232A2021-08-24
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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