Title:
OPTICAL LENS AND IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/223598
Kind Code:
A1
Abstract:
The present invention provides an optical lens and an imaging device. The optical lens comprises, from an object side to an image side in sequence: a first lens having negative focal power, an object side surface of the first lens being a convex surface, and an image side surface of the first lens being a concave surface; a diagram; a second lens having positive focal power, an object side surface of the second lens being a convex surface, and an image side surface of the second lens being a concave surface; a third lens having positive focal power, an object side surface of the third lens being a convex surface, and an image side surface of the third lens being a concave surface; a fourth lens having positive focal power, an object side surface and an image side surface of the fourth lens both being convex surfaces; a fifth lens having negative focal power, an object side surface of the fifth lens being a convex surface near an optical axis and having at least one point of inflection, and an image side surface of the fifth lens being a concave surface near an optical axis and having at least one point of inflection; and a filter. The optical lens satisfies the following conditional expression: 2.0 mm<(TTL/IH)*f<2.2 mm. The external diameter of the head of the optical lens is small, and the optical lens has a large angle of view and a large aperture, and is more suitable for design requirements of ToF technology.
Inventors:
YU XIAOZHI (CN)
ZENG HAOJIE (CN)
LIU XUMING (CN)
ZENG JIYONG (CN)
ZENG HAOJIE (CN)
LIU XUMING (CN)
ZENG JIYONG (CN)
Application Number:
PCT/CN2021/088769
Publication Date:
November 11, 2021
Filing Date:
April 21, 2021
Export Citation:
Assignee:
JIANGXI LIANYI OPTICS CO LTD (CN)
International Classes:
G02B13/00; G02B13/06; G02B13/18
Foreign References:
| CN111290106A | 2020-06-16 | |||
| CN104635323A | 2015-05-20 | |||
| CN110297317A | 2019-10-01 | |||
| CN110727083A | 2020-01-24 | |||
| JP2017223755A | 2017-12-21 |
Attorney, Agent or Firm:
SHENZHEN ZHIQUAN INTELLECTUAL PROPERTY OFFICE (CN)
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