公开(公告)号：US11475692B2

公开(公告)日：2022-10-18

申请号：US16199718

申请日：2018-11-26

Applicant: FINGERPRINT CARDS AB

Inventor： Arash Akhavan Fomani ,  Marek Mienko ,  Patrick Smith ,  Paul Wickboldt

IPC: G06F3/042 ,  G06V40/13 ,  G01J1/04 ,  G01J1/02 ,  G01J1/06 ,  G01J1/08 ,  G06V40/12 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/133 ,  G02F1/1368

Abstract: Systems and methods for optical imaging are disclosed. An optical sensor for imaging a biometric input object on a sensing region includes a transparent layer having a first side and a second side opposite the first side; a set of apertures disposed above the first side of the transparent layer; a first set of reflective surfaces disposed below the second side of the transparent layer configured to receive light transmitted through the first set of apertures and to reflect the received light; a second set of reflective surfaces disposed above the first side of the transparent layer configured to receive the light reflected from the first set of reflective surfaces and to further reflect the light; and a plurality of detector elements positioned to receive the further reflected light from the second set of reflective surfaces.