Title:
PHOTOGRAPHIC OPTICAL LENS
Document Type and Number:
WIPO Patent Application WO/2021/109198
Kind Code:
A1
Abstract:
Disclosed is a photographic optical lens (10), comprising in sequence from the object side to the image side: a first lens (L1) having a positive refractive power, a second lens (L2) having a negative refractive power, a third lens (L3) having a positive refractive power, a fourth lens (L4) having a negative refractive power, a fifth lens (L5), a sixth lens (L6), a seventh lens (L7) having a positive refractive power, and an eighth lens (L8) having a negative refractive power; the fourth lens (L4) has a focal length of f4, the photographic optical lens (10) has an overall focal length of f, and the seventh lens (L7) has a focal length of f7, the first lens (L1) has an on-axis thickness of d1, the on-axis distance between the image side of the first lens (L1) and the object side of the second lens (L2) is d2, and the following relationships are satisfied: -11.00≤f4/f≤-5.00; 2.50≤f7/f≤8.00; 6.00≤d1/d2≤10.00. The present photographic optical lens (10) has good optical performance and meets large aperture, wide-angle, and ultra-thin design requirements.
Inventors:
SUN WEN (CN)
YAN JUNJIE (CN)
YAN JUNJIE (CN)
Application Number:
PCT/CN2019/124888
Publication Date:
June 10, 2021
Filing Date:
December 12, 2019
Export Citation:
Assignee:
AAC OPTICS CHANGZHOU CO LTD (CN)
International Classes:
G02B13/00; G02B13/06; G02B13/18
Foreign References:
| CN110471168A | 2019-11-19 | |||
| CN108254890A | 2018-07-06 | |||
| CN109358413A | 2019-02-19 | |||
| CN109061838A | 2018-12-21 | |||
| CN108445610A | 2018-08-24 | |||
| US20180372998A1 | 2018-12-27 |
Attorney, Agent or Firm:
GUANGDONG GUANGHE LAW FIRM (CN)
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