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Patent Searching and Data


Title:
OPTICAL IMAGING LENS
Document Type and Number:
WIPO Patent Application WO/2019/024490
Kind Code:
A1
Abstract:
An optical imaging lens, comprising a first lens (E1), a second lens (E2), a third lens (E3), a fourth lens (E4), a fifth lens (E5), and a sixth lens (E6) sequentially from an object side to an image side along an optical axis. The first lens (E1) has positive refractive power; the second lens (E2), the third lens (E3) and the sixth lens (E6) have negative refractive power; at least one of the fourth lens (E4) and the fifth lens (E5) has positive refractive power; the object side surface of the first lens (E1) and the image side surface of the fourth lens (E4) are convex surfaces; the image side surface of the second lens (E2) and the image side surface of the sixth lens (E6) are concave surfaces; and the total effective focal length f of the optical imaging lens and the curvature radius R9 of the image side surface of the fifth lens meet f/|R9|≤0.35. Therefore, the imaging effect under a dark environment can be enhanced while the aberration of marginal rays is improved.

Inventors:
LI MING (CN)
YANG JIAN (CN)
HE LINGBO (CN)
Application Number:
PCT/CN2018/077203
Publication Date:
February 07, 2019
Filing Date:
February 26, 2018
Export Citation:
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Assignee:
ZHEJIANG SUNNY OPTICAL CO LTD (CN)
International Classes:
G02B13/00
Domestic Patent References:
WO2015005417A12015-01-15
Foreign References:
CN107219613A2017-09-29
CN206930826U2018-01-26
CN106990511A2017-07-28
CN202522758U2012-11-07
CN104122650A2014-10-29
Attorney, Agent or Firm:
INSIGHT INTELLECTUAL PROPERTY LIMITED (CN)
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