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Title:
OPTICAL IMAGING LENS
Document Type and Number:
WIPO Patent Application WO/2019/052144
Kind Code:
A1
Abstract:
An optical imaging lens. The optical imaging lens comprises, from an object side to an image side along an optical axis, a first lens (E1), a second lens (E2), a third lens (E3), a fourth lens (E4), a fifth lens (E5), a sixth lens (E6), and a seventh lens (E7) in sequence. The first lens (E1), the second lens (E2), and the sixth lens (E6) all have positive focal power; the third lens (E3) and the seventh lens (E7) both have negative focal power; the fourth lens (E4) and the fifth lens (E5) both have focal power; object side surfaces (S1, S3) of the first lens (E1) and the second lens (E2) are both convex surfaces; an image side surface (S6) of the third lens (E3) is a concave surface. The total effective focal length f of the optical imaging lens and the curvature radius R13 of the object side surface (S13) of the seventh lens satisfy |f/R13|≥2.5.

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Inventors:
LYU SAIFENG (CN)
Application Number:
PCT/CN2018/080107
Publication Date:
March 21, 2019
Filing Date:
March 23, 2018
Export Citation:
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Assignee:
ZHEJIANG SUNNY OPTICAL CO LTD (CN)
International Classes:
G02B11/34; G02B9/64; G02B13/00
Foreign References:
CN107621681A2018-01-23
CN107102425A2017-08-29
CN106324811A2017-01-11
CN106842512A2017-06-13
CN105866924A2016-08-17
Attorney, Agent or Firm:
INSIGHT INTELLECTUAL PROPERTY LIMITED (CN)
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