Title:
OPTICAL ZOOM SYSTEM, ZOOM IMAGE CAPTURE MODULE AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/141496
Kind Code:
A1
Abstract:
An optical zoom system (100), comprising: a first lens group (L12) having a positive refractive power, wherein the first lens group (L12) comprises a first lens (L1) and a second lens (L2); a second lens group (L34) having a negative refractive power, wherein the second lens group (L34) comprises a third lens (L3) and a fourth lens (L4); a third lens group (L567) having a positive refractive power, wherein the third lens group (L567) comprises a fifth lens (L5), a sixth lens (L6) and a seventh lens (L7); and a fourth lens group having a positive refractive power, wherein the fourth lens group comprises an eighth lens (L8). The on-optical-axis (110) distances between the lens groups of the optical zoom system (100) are adjustable, so as to realize focal length changes of the optical zoom system (100). The optical zoom system (100) satisfies the following conditional expression: f7/f567 ≤ -0.2.
Inventors:
YANG JIAN (CN)
LI MING (CN)
LI MING (CN)
Application Number:
PCT/CN2020/142366
Publication Date:
July 07, 2022
Filing Date:
December 31, 2020
Export Citation:
Assignee:
OFILM GROUP CO LTD (CN)
JIANGXI JINGCHAO OPTICAL CO LTD (CN)
JIANGXI JINGCHAO OPTICAL CO LTD (CN)
International Classes:
G02B15/16; G02B13/18; G02B15/14; G02B15/173; G02B15/20
Foreign References:
| CN101131467A | 2008-02-27 | |||
| US20070217024A1 | 2007-09-20 | |||
| CN101183171A | 2008-05-21 | |||
| CN101183172A | 2008-05-21 | |||
| US20110285896A1 | 2011-11-24 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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