公开(公告)号：WO2022071862A1

公开(公告)日：2022-04-07

申请号：PCT/SE2021/050959

申请日：2021-09-29

Applicant: FINGERPRINT CARDS ANACATUM IP AB

Inventor： HAMMERSBERG, Johan ,  JÄGEMALM, Pontus

IPC: G06V40/13 ,  G02F1/1335 ,  G02F1/29 ,  H01L27/146

Abstract: The present invention relates to a biometric imaging arrangement configured to be arranged under an at least partly transparent display panel and to acquire an infrared image of an object located on the opposite side of the least partly transparent display panel, the biometric imaging arrangement comprising: an image sensor comprising a detector pixel array configured to detect infrared light transmitted from the object for capturing an image, an at least partly transparent substrate comprising an array of microlenses, wherein each microlens is configured to redirect light through the least partly transparent substrate and onto the detector pixel array, wherein the at least partly transparent substrate further comprises optical decoupling areas configured to orthogonally redirect infrared light received from a side of the at least partly transparent substrate towards the object when being placed for imaging.

公开(公告)号：WO2022071861A1

公开(公告)日：2022-04-07

申请号：PCT/SE2021/050958

申请日：2021-09-29

Applicant: FINGERPRINT CARDS ANACATUM IP AB

Inventor： HAMMERSBERG, Johan ,  JÄGEMALM, Pontus

IPC: G06V40/13 ,  G02F1/29 ,  H01L27/146 ,  G02B6/10

Abstract: The present invention relates to a biometric imaging arrangement comprising: an image sensor comprising a detector pixel array configured to detect infrared radiation transmitted from an object for capturing an image, a waveguide structure arranged on the image sensor to cover the detector pixel array, the waveguide structure comprising optical decoupling areas configured to orthogonally redirect infrared light received from a side of the waveguide structure towards the object when being placed for imaging.