公开(公告)号：US20240005702A1

公开(公告)日：2024-01-04

申请号：US18039337

申请日：2021-11-29

Applicant: Fingerprint Cards Anacatum IP AB

Inventor： Arvid HAMMAR ,  Hans MARTINSSON ,  Su LIU

IPC: G06V40/40 ,  G06V40/13 ,  G06V10/143

CPC classification number: G06V40/40 ,  G06V40/1318 ,  G06V10/143

Abstract: A biometric imaging arrangement comprises an image sensor comprising a photodetector pixel array for capturing an image of an object. An infrared cut-off filter is arranged to at least partly cover the photodetector pixel array. The infrared cut-off filter comprises a first filter area having a first transmission wavelength band including wavelengths in the visible range of wavelengths, and at least two additional filter areas having transmission wavelength bands including wavelengths in the visible range of wavelengths. The transmission wavelength bands of the additional filter areas being different from the first transmission wavelength band, wherein at least two of the additional filter areas are spatially separated by the first filter area.