Title:
LENS ASSEMBLY AND FINGERPRINT RECOGNITION MODULE
Document Type and Number:
WIPO Patent Application WO/2020/181552
Kind Code:
A1
Abstract:
The embodiments of the present application relate to a lens assembly and a fingerprint recognition module. From an object side to a lens side, the lens assembly sequentially comprises: a first lens, a second lens, and a third lens, at least one non-spherical surface being found in both surfaces of the first lens, both surfaces of the second lens, and both surfaces of the third lens. The first lens is a lens having a negative dioptric power; the second lens is a lens having a positive dioptric power; and the third lens is a lens having a positive dioptric power. The lens assembly satisfies: 0.5 < |Y'/(ƒ*TTL)| < 0.8, where Y' represents the maximum image height on the surface of the image side, ƒ represents the focal length of the lens assembly, and TTL represents the distance from the object side to the image side. The lens assembly and the fingerprint recognition module of the embodiments of the present application effectively increase the accuracy and recognition speed of optical fingerprint recognition.
Inventors:
LI LINXIN (CN)
GE CONG (CN)
GE CONG (CN)
Application Number:
PCT/CN2019/078140
Publication Date:
September 17, 2020
Filing Date:
March 14, 2019
Export Citation:
Assignee:
SHENZHEN GOODIX TECH CO LTD (CN)
International Classes:
G02B13/00
Foreign References:
| CN109196521A | 2019-01-11 | |||
| CN108037577A | 2018-05-15 | |||
| JP2006162829A | 2006-06-22 |
Other References:
See also references of EP 3809182A4
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
Download PDF:
Previous Patent: FLOOR TILE SCREEN
Next Patent: METHOD AND DEVICE FOR IDENTIFYING PRODUCTION EQUIPMENT IN ABNORMAL STATE IN FACTORY
Next Patent: METHOD AND DEVICE FOR IDENTIFYING PRODUCTION EQUIPMENT IN ABNORMAL STATE IN FACTORY