Title:
A WIDE-ANGLE LENS OPTICAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/010240
Kind Code:
A1
Abstract:
A wide-angle lens optical system comprises, from the object side to the image side, a focusing lens group (FG) with a positive refractive power and a fixed lens group (FL) with a negative refractive power. The focusing lens group (FG) is movable along the optical axis for focusing while the fixed lens group (FL) is fixed on the most image side adjacent to the imaging surface (IMG) so that the back-focus is also fixed.
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Inventors:
MIYATANI SOTA (JP)
TONG QING (CN)
ANZAWA TAKUYA (JP)
HORIDAN ATSUSHI (CN)
KOYANAGI MASAHIKO (JP)
TONG QING (CN)
ANZAWA TAKUYA (JP)
HORIDAN ATSUSHI (CN)
KOYANAGI MASAHIKO (JP)
Application Number:
PCT/CN2021/110031
Publication Date:
February 09, 2023
Filing Date:
August 02, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G02B15/163
Foreign References:
| CN111830694A | 2020-10-27 | |||
| CN110873952A | 2020-03-10 | |||
| CN112230404A | 2021-01-15 | |||
| JPH07181389A | 1995-07-21 | |||
| CN101526668A | 2009-09-09 | |||
| US20170192203A1 | 2017-07-06 | |||
| JP2007094170A | 2007-04-12 | |||
| CN107102428A | 2017-08-29 |
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