公开(公告)号：US20220254186A1

公开(公告)日：2022-08-11

申请号：US17630213

申请日：2020-08-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianwen WANG ,  Feng YU ,  Huihua ZHAO ,  Jing CHU ,  Heng WANG

IPC: G06V40/13 ,  G06V40/12 ,  G06F3/042

Abstract: A fingerprint recognition apparatus includes an optical film and an image sensor that are disposed at an interval of a first distance along a first direction. The optical film includes a first area and a second area, transmittances of the first area and the second area are different, the first area and the second area form a first pattern, and when receiving light reflected by a first object, the optical film converts the light into an optical image that has the first pattern and transmits the optical image to the image sensor. The image sensor is configured to receive the optical image and convert the optical image into an electrical signal. The electrical signal is used to construct an image of the first object.