Title:
IRIS CAMERA LENS
Document Type and Number:
WIPO Patent Application WO/2018/223582
Kind Code:
A1
Abstract:
Disclosed is an iris camera lens. The iris camera lens comprises, along an optical axis and in order from an object side to an imaging face, a first lens (L1), a second lens (L2), a third lens (L3) and an optical filter (L4). An aperture stop (STO) is arranged between the first lens (L1) and the second lens (L2); the first lens (L1) has a positive focal power, an object side face (S1) of the lens is a convex face and an image side face (S2) thereof is a concave face; the second lens (L2) has a negative focal power; the third lens (L3) has a positive focal power or a negative focal power; and the optical filter (L4) is an IR optical filter, and a bandpass waveband thereof is 750 nm to 900 nm.
Inventors:
HUANG LIN (CN)
Application Number:
PCT/CN2017/107848
Publication Date:
December 13, 2018
Filing Date:
October 26, 2017
Export Citation:
Assignee:
ZHEJIANG SUNNY OPTICAL CO LTD (CN)
International Classes:
G02B9/12; G02B13/14
Foreign References:
| CN107015350A | 2017-08-04 | |||
| CN106443972A | 2017-02-22 | |||
| CN104090347A | 2014-10-08 | |||
| CN205809392U | 2016-12-14 | |||
| CN105445903A | 2016-03-30 | |||
| CN105137571A | 2015-12-09 |
Attorney, Agent or Firm:
INSIGHT INTELLECTUAL PROPERTY LIMITED (CN)
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