Title:
OPTICAL LENS
Document Type and Number:
WIPO Patent Application WO/2019/091137
Kind Code:
A1
Abstract:
An optical lens, sequentially comprising along an optical axis from an object side to an image side: a first lens (E1), a second lens (E2), a third lens (E3), a fourth lens (E4), and a fifth lens (E5). The first lens (E1) has a positive focal power. The second lens (E2) has a negative focal power. The third lens (E3) has a positive focal power. The fourth lens (E4) has a positive focal power or a negative focal power, and an image side surface (S8) thereof is convex. The fifth lens (E5) has a negative focal power. The combined focal length f1234 of the first lens (E1), the second lens (E2), the third lens (E3), and the fourth lens (E4) and a spacing distance T45 between the fourth lens (S4) and the fifth lens (S5) on the optical axis satisfy f1234 / T45 < 4.0.
Inventors:
YANG JIAN (CN)
Application Number:
PCT/CN2018/095985
Publication Date:
May 16, 2019
Filing Date:
July 17, 2018
Export Citation:
Assignee:
ZHEJIANG SUNNY OPTICAL CO LTD (CN)
International Classes:
G02B13/00
Foreign References:
| CN107656358A | 2018-02-02 | |||
| CN207336907U | 2018-05-08 | |||
| CN106842513A | 2017-06-13 | |||
| CN106896481A | 2017-06-27 | |||
| JP2012194597A | 2012-10-11 | |||
| CN104375260A | 2015-02-25 |
Attorney, Agent or Firm:
INSIGHT INTELLECTUAL PROPERTY LIMITED (CN)
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