Title:
PHOTOGRAPHING OPTICAL LENS
Document Type and Number:
WIPO Patent Application WO/2021/031237
Kind Code:
A1
Abstract:
Provided is a photographing optical lens, sequentially comprising, from an object side to an image side, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a positive refractive power, and a fifth lens having a negative refractive power, wherein the photographing optical lens has a focal length of f; the first lens, the second lens, the third lens and the fifth lens respectively have a focal length of f1, f2, f3 and f5; an object-side face and an image-side face of the second lens respectively have a radius of curvature of R3 and R4; an object-side face and an image-side face of the fourth lens respectively have a radius of curvature of R7 and R8; and an object-side face and an image-side face of the fifth lens respectively have a radius of curvature of R9 and R10, wherein same satisfy: -0.50 ≤ f1/f2 ≤ -0.35; 50.00 ≤ f3/f ≤ 75.00; -2.40 ≤ (f2+f5)/f ≤ -2.00; 0.70 ≤ (R3+R4)/(R3-R4) ≤ 0.95; 1.30 ≤ (R7+R8)/(R7-R8) ≤ 1.60; and 0.40 ≤ (R9+R10)/(R9-R10) ≤ 0.75. The photographing optical lens meets the large-aperture, wide-angle and ultra-thin design requirements while having a good optical performance.
Inventors:
CHEN JIEKANG (CN)
HIROYUKI TERAOKA (JP)
HIROYUKI TERAOKA (JP)
Application Number:
PCT/CN2019/103607
Publication Date:
February 25, 2021
Filing Date:
August 30, 2019
Export Citation:
Assignee:
AAC OPTICS CHANGZHOU CO LTD (CN)
International Classes:
G02B13/00; G02B13/06; G02B13/18
Domestic Patent References:
| WO2019026620A1 | 2019-02-07 |
Foreign References:
| CN109839726A | 2019-06-04 | |||
| CN105158881A | 2015-12-16 | |||
| CN101782676A | 2010-07-21 | |||
| CN101710207A | 2010-05-19 |
Attorney, Agent or Firm:
SHENZHEN CIPRUN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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