Title:
PHOTOGRAPHING OPTICAL LENS
Document Type and Number:
WIPO Patent Application WO/2022/110401
Kind Code:
A1
Abstract:
A photographing optical lens (10, 20, 30). The photographing optical lens (10, 20, 30) comprises seven lenses in total. The seven lenses sequentially comprise, from the object side to the 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 negative refractive power, a sixth lens (L6) having positive refractive power, and a seventh lens (L7) having negative refractive power, wherein the focal length of the second lens (L2) is f2, the focal length of the third lens (L3) is f3, the central radius of curvature of an object-side surface of the first lens (L1) is R1, the central radius of curvature of an image-side surface of the first lens (L1) is R2, the central radius of curvature of an object-side surface of the second lens (L2) is R3, the central radius of curvature of an image-side surface of the second lens (L2) is R4, and the following relations are met: -3≤f3/f2≤-2, and -4≤(R1-R2)/(R3-R4)≤-1.5.
Inventors:
TERANISHI TAKAAKI (JP)
WANG YANMEI (CN)
WANG YANMEI (CN)
Application Number:
PCT/CN2020/137940
Publication Date:
June 02, 2022
Filing Date:
December 21, 2020
Export Citation:
Assignee:
AAC OPTICS SHENZHEN CO LTD (CN)
CHANGZHOU RAYTECH OPTRONICS CO LTD (CN)
CHANGZHOU RAYTECH OPTRONICS CO LTD (CN)
International Classes:
G02B13/00
Foreign References:
| CN112130280A | 2020-12-25 | |||
| CN111736301A | 2020-10-02 | |||
| CN110542982A | 2019-12-06 | |||
| CN111458847A | 2020-07-28 | |||
| CN109613679A | 2019-04-12 | |||
| CN111458850A | 2020-07-28 | |||
| JPH08327896A | 1996-12-13 | |||
| JP2011133793A | 2011-07-07 |
Attorney, Agent or Firm:
SHENZHEN CHINA INNOVATION SOUTH INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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