Title:
PHOTOGRAPHIC OPTICAL LENS
Document Type and Number:
WIPO Patent Application WO/2021/031276
Kind Code:
A1
Abstract:
A photographic optical lens (10, 20, 30). The photographic optical lens (10, 20, 30) sequentially comprises, from an object side to an image side, a first lens (L1) having positive refractive power, a second lens (L2) having negative refractive power, a third lens (L3) having positive refractive power, a fourth lens (L4) having negative refractive power, a fifth lens (L5) having positive refractive power, a sixth lens (L6) having positive refractive power, and a seventh lens (L7) having negative refractive power. The focal length of the photographic optical lens (10, 20, 30) is f, the focal length of the second lens (L2) is f2, the radius of curvature of an object side surface of the fifth lens (L5) is R9, the radius of curvature of an image side surface of the fifth lens (L5) is R10, the Abbe number of the first lens (L1) is v1, and the Abbe number of the second lens (L2) is v2, satisfying the following relations: 3.00≤v1/v2≤4.30, -5.00≤f2/f≤-2.00, and 2.50≤(R9+R10)/(R9-R10)≤15.00. The photographic optical lens (10, 20, 30) has good optical performance, and also satisfies the design requirements of being large-aperture, wide-angle, and ultra-thin.
Inventors:
LIN JIAZHENG (CN)
SUN WEN (CN)
SUN WEN (CN)
Application Number:
PCT/CN2019/107152
Publication Date:
February 25, 2021
Filing Date:
September 21, 2019
Export Citation:
Assignee:
AAC OPTICS CHANGZHOU CO LTD (CN)
International Classes:
G02B13/00; G02B13/06; G02B13/18
Foreign References:
| CN108107552A | 2018-06-01 | |||
| CN107797232A | 2018-03-13 | |||
| CN108121054A | 2018-06-05 | |||
| CN110058380A | 2019-07-26 | |||
| CN110068914A | 2019-07-30 | |||
| JP2002350725A | 2002-12-04 |
Attorney, Agent or Firm:
GUANGDONG GUANGHE LAW FIRM (CN)
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