WIDE-ANGLE LENS AND IMAGING DEVICE - JIANGXI LIANCHUANG ELECT CO LTD

Title:

WIDE-ANGLE LENS AND IMAGING DEVICE

Document Type and Number:

WIPO Patent Application WO/2021/008319

Kind Code:

A1

Abstract:

A wide-angle lens (100, 200), comprising a first lens (L1), a second lens (L2), a third lens (L3), a fourth lens (L4), a fifth lens (L5), and a sixth lens (L6) which are sequentially arranged along the same optical axis from an object side to an image side and are all made of glass. A stop (ST) is provided between the third lens (L3) and the fourth lens (L4). The first lens (L1) has negative refractive power, and has a convex object side surface (S1) and a concave image side surface (S2). The second lens (L2) has negative refractive power, and has a concave object side surface (S3) and a concave image side surface (S4). The third lens (L3) has positive refractive power, and has a convex object side surface (S5) and a convex image side surface (S6). The fourth lens (L4) has negative refractive power, and has a concave object side surface (S7) and a concave image side surface (S8-1). The fifth lens (L5) has positive refractive power, and has a convex object side surface (S8-2) and a convex image side surface (S9). The sixth lens (L6) has positive refractive power, and a convex object side surface (S10) and a convex image side surface (S11). The wide-angle lens (100, 200) has good resolution and good imaging quality at high and low temperatures.

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Inventors:

WEI WENZHE (CN)
BAO YUMIN (CN)
ZENG JIYONG (CN)

Application Number:

PCT/CN2020/097879

Publication Date:

January 21, 2021

Filing Date:

June 24, 2020

Export Citation:

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Assignee:

JIANGXI LIANCHUANG ELECT CO LTD (CN)

International Classes:

G02B13/00; G02B13/06; G02B13/18

Foreign References:

CN208847940U	2019-05-10
CN109521549A	2019-03-26
CN101614864A	2009-12-30
CN110161662A	2019-08-23
CN109407279A	2019-03-01
CN107741625A	2018-02-27
US20190155006A1	2019-05-23

Attorney, Agent or Firm:

SHENZHEN ZHIQUAN INTELLECTUAL PROPERTY OFFICE (CN)

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