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Title:
OPTICAL IMAGING LENS
Document Type and Number:
WIPO Patent Application WO/2022/205690
Kind Code:
A1
Abstract:
The present invention provides an optical imaging lens, sequentially, from an object side to an imaging surface along an optical axis, comprising: a first lens having negative focal power, an object side surface thereof being a concave surface; a second lens having positive focal power, an object side surface thereof being a convex surface, and an image side surface thereof being a concave surface or approximately a flat surface; a third lens having positive focal power, an object side surface and an image side surface thereof being both convex surfaces; a fourth lens having positive focal power, an object side surface and an image side surface thereof being both convex surfaces; a fifth lens having negative focal power, an object side surface and an image side surface thereof being both concave surfaces, and the fourth lens and the fifth lens constituting a cemented lens group; a sixth lens having positive focal power, an object side surface thereof being a convex surface; a seventh lens having negative focal power, an object side surface and an image side surface thereof being both concave surfaces; and a diaphragm located between the first lens and the third lens. A focal length f of the optical imaging lens is greater than 12 mm. The optical imaging lens can realize long-distance high-definition imaging, also has the characteristics of large aperture, and can satisfy imaging requirements in a darker environment.

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Inventors:
WEI WENZHE (CN)
WANG KEMIN (CN)
ZENG JIYONG (CN)
Application Number:
PCT/CN2021/107554
Publication Date:
October 06, 2022
Filing Date:
July 21, 2021
Export Citation:
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Assignee:
JIANGXI LIANCHUANG ELECT CO LTD (CN)
International Classes:
G02B13/00; G02B1/00; G02B13/18
Foreign References:
CN112731630A2021-04-30
CN108919459A2018-11-30
JP2012141464A2012-07-26
CN209417403U2019-09-20
Attorney, Agent or Firm:
SHENZHEN ZHIQUAN INTELLECTUAL PROPERTY OFFICE (CN)
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