Title:
OPTICAL ZOOM LENS, IMAGING DEVICE, AND ENDOSCOPE
Document Type and Number:
WIPO Patent Application WO/2023/193377
Kind Code:
A1
Abstract:
An optical zoom lens (100), an imaging device (200), and an endoscope (400). The optical zoom lens (100) comprises: a lens group (40) and an aperture diaphragm (50). The lens group (40) comprises: a first meniscus lens (L11), a first biconvex lens (L12), a second meniscus lens (L13), a first biconcave lens (L21), a second biconcave lens (L22), a second biconvex lens (L23), a third biconvex lens (L31), a third meniscus lens (L32), a fourth meniscus lens (L41), and a fourth biconvex lens (L42), wherein the aperture diaphragm (50) is arranged between the second meniscus lens (L13) and the first biconcave lens (L21), or is arranged on the first biconcave lens (L21).
Inventors:
WU PEI (CN)
YAO WEIZHONG (CN)
YAO WEIZHONG (CN)
Application Number:
PCT/CN2022/109883
Publication Date:
October 12, 2023
Filing Date:
August 03, 2022
Export Citation:
Assignee:
ZHEJIANG HEALNOC TECH CO LTD (CN)
International Classes:
G02B15/00; G02B23/24
Foreign References:
| CN114442291A | 2022-05-06 | |||
| JP2011053526A | 2011-03-17 | |||
| JPH05297275A | 1993-11-12 | |||
| US20030189763A1 | 2003-10-09 | |||
| US20080247055A1 | 2008-10-09 | |||
| US5235466A | 1993-08-10 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (HANGZHOU) (CN)
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