Title:
OPTICAL DEVICE AND PHOTOGRAPHING DEVICE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2023/212878
Kind Code:
A1
Abstract:
Provided are an optical system and a photographing device comprising same. The optical system comprises: a first lens group having positive refractive power, a second lens group having negative refractive power and a third lens group having negative refractive power which are sequentially arranged from an object side; when focusing, the second lens group moves along an optical axis, and the first lens group and the third lens group are fixed with respect to an imaging surface; when the distance from the most object-side surface of the second lens group to the most image-side surface thereof is set to OAL2, and the distance from the most object-side surface of the entire optical system to an image surface thereof is set to OAL, 0.06≤OAL2/OAL is satisfied.
Inventors:
OBIKANE YASUHIKO (JP)
Application Number:
PCT/CN2022/091050
Publication Date:
November 09, 2023
Filing Date:
May 05, 2022
Export Citation:
Assignee:
BEIJING XIAOMI MOBILE SOFTWARE CO LTD (CN)
International Classes:
G02B15/14; G02B9/12; G02B13/00; G02B15/00; G02B15/17
Foreign References:
| CN102236152A | 2011-11-09 | |||
| CN112882213A | 2021-06-01 | |||
| CN112612127A | 2021-04-06 | |||
| JP2013130723A | 2013-07-04 | |||
| JP5749629B2 | 2015-07-15 | |||
| JP2021173847A | 2021-11-01 |
Attorney, Agent or Firm:
FASHENG INTELLECTUAL PROPERTY COMPANY, LTD. (CN)
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