Title:
ZOOM LENS OPTICAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/010239
Kind Code:
A1
Abstract:
A switching zoom lens comprises, from an object side to an image side along an optical axis (OA), a reflective optical element (P) to bend an optical path from the object side to the image side, a front lens group (Gf) with a positive refractive power, and a rear lens group (Gr) comprising three or more and five or less lens elements (L7-L10). When zooming from a wide angle end to a telephoto end, the rear lens group (Gr) is inserted between the front lens group (Gf) and an imaging surface (IMG), and when zooming from the telephoto end to the wide angle end, the rear lens group (Gr) is moved out of the optical path of the switching zoom lens.
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Inventors:
MIYATANI SOTA (JP)
TONG QING (CN)
ANZAWA TAKUYA (JP)
IZUMI RYOTARO (JP)
ATSUTA KAZUYA (JP)
TONG QING (CN)
ANZAWA TAKUYA (JP)
IZUMI RYOTARO (JP)
ATSUTA KAZUYA (JP)
Application Number:
PCT/CN2021/110020
Publication Date:
February 09, 2023
Filing Date:
August 02, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G02B15/10; G02B15/02
Foreign References:
| JPS62244011A | 1987-10-24 | |||
| US20090073572A1 | 2009-03-19 | |||
| US4596447A | 1986-06-24 | |||
| US4146305A | 1979-03-27 | |||
| CN102866483A | 2013-01-09 |
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