公开(公告)号：US11995911B2

公开(公告)日：2024-05-28

申请号：US18260508

申请日：2022-02-03

Applicant: FINGERPRINT CARDS ANACATUM IP AB

Inventor： Johan Hammersberg ,  Arvid Hammar

IPC: G06V40/13 ,  G02B5/20 ,  G02B27/28 ,  G06V10/14

CPC classification number: G06V40/1318 ,  G02B5/208 ,  G02B27/281 ,  G02B27/288 ,  G06V10/14

Abstract: An optical biometric imaging device includes an image sensor having a plurality of photodetector pixels; a lens assembly having at least one lens configured to focus light reflected by a biometric object onto the image sensor; at least one light source arranged adjacent to the lens assembly and which emits light towards a sensing surface of the biometric imaging device. The at least one light source comprises a waveguide which vertical decouples light; a first linear polarizer arranged between the light source and the image sensor; and a ring-shaped second linear polarizer arranged over the light source to polarize light emitted by the light source in a direction away from the image sensor and having an opening which allows light reflected by a biometric object to reach the lens without being filtered by the second linear polarizer. At least one of the polarizers are rotatable.

公开(公告)号：US11922716B2

公开(公告)日：2024-03-05

申请号：US17909370

申请日：2021-03-10

Applicant: Fingerprint Cards Anacatum IP AB

Inventor： Johan Hammersberg

IPC: G06V40/13 ,  G01J5/10 ,  G06V40/12 ,  G06V40/40 ,  G01J5/00

CPC classification number: G06V40/1318 ,  G01J5/10 ,  G06V40/1365 ,  G06V40/40 ,  G01J2005/0077 ,  G01J2005/106

Abstract: The present invention relates to a passive terahertz biometric imaging device configured to be arranged under an at least partially transparent display panel and configured to capture a terahertz image of an object located on an opposite side of the transparent display panel, the terahertz biometric imaging device comprising: an image sensor comprising an antenna pixel array arranged to detect terahertz radiation produced by the object, for capturing a terahertz image of the object.

公开(公告)号：US11893100B2

公开(公告)日：2024-02-06

申请号：US17917780

申请日：2021-03-29

Applicant: Fingerprint Cards Anacatum IP AB

Inventor： Johan Hammersberg ,  Eric Setterberg ,  Mattias Carlén

IPC: G06F21/32 ,  G06V10/145 ,  G06V40/13 ,  G06V40/12 ,  G06V10/56 ,  G06V10/82 ,  G06V10/50 ,  G06V10/147 ,  G06V40/40

CPC classification number: G06F21/32 ,  G06V10/145 ,  G06V10/147 ,  G06V10/50 ,  G06V10/56 ,  G06V10/82 ,  G06V40/1318 ,  G06V40/1365 ,  G06V40/1382 ,  G06V40/1388 ,  G06V40/1394 ,  G06V40/45

Abstract: The present invention relates biometric authentication using an optical biometric arrangement comprising an image sensor comprising a photodetector pixel array configured to capture an image of an object, the image sensor being arranged under a color controllable light source comprising light source units, the method comprising: providing a light pattern comprising portions of different light intensity for illuminating the object; acquiring an image of the object, the image comprising image portions corresponding to the portions of different light intensity of the light pattern illuminating the object, at least one image portion being captured by pixels in the photodetector pixel array arranged directly under a light source being active during image acquisition, and at least one image portion being captured by pixels in the photodetector pixel array arranged under an at least partly in-active illumination area of the color controllable light source during image acquisition, and performing biometric authentication at least partly based on metrics extracted from the image portions.

公开(公告)号：US11749015B2

公开(公告)日：2023-09-05

申请号：US17909373

申请日：2021-03-10

Applicant: Fingerprint Cards Anacatum IP AB

Inventor： Johan Hammersberg

IPC: G06V40/13 ,  G06V40/12

CPC classification number: G06V40/1318 ,  G06V40/1394

Abstract: The present invention relates to a terahertz biometric imaging arrangement configured to be arranged under an at least partially transparent display panel and configured to capture an image of an object located on an opposite side of the transparent display panel, the biometric imaging arrangement comprising: a transmitter element arranged to emit terahertz radiation for illuminating the object; and an image sensor comprising an antenna pixel array arranged to detect terahertz radiation transmitted from the illuminated object, for producing an image.

公开(公告)号：US11741745B2

公开(公告)日：2023-08-29

申请号：US17799822

申请日：2021-02-16

Applicant: Fingerprint Cards Anacatum IP AB

Inventor： Eric Setterberg ,  Johan Hammersberg ,  Jan Berglund

IPC: G06V40/12 ,  G06V40/13 ,  G06V10/143

CPC classification number: G06V40/1394 ,  G06V10/143 ,  G06V40/1318

Abstract: The present invention relates to a method for biometric authentication of a user of an electronic device comprising an optical fingerprint sensor arranged under an at least partially transparent display panel and configured to capture an image of an object located on an opposite side of the transparent display panel, the method comprises the steps of: illuminating the object with light of at least one distinguishable color; capturing at least two images of the object with an image sensor comprising a photodetector pixel array while illuminating the object with the light of at least one distinguishable color, wherein the images are captured for different applied forces by the object on the transparent display panel; and performing biometric authentication at least partly based on at least one relationship between the at least two images, the at least one relationship being related to a difference in pixel intensity from pixels in the photodetector pixel array arranged to detect light of the distinguishable color.

公开(公告)号：US12008835B2

公开(公告)日：2024-06-11

申请号：US18028912

申请日：2021-09-29

Applicant: Fingerprint Cards Anacatum IP AB

Inventor： Johan Hammersberg ,  Pontus Jägemalm

IPC: G06K9/00 ,  G06V10/145 ,  G06V40/13

CPC classification number: G06V40/1318 ,  G06V10/145

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.

公开(公告)号：US11900715B2

公开(公告)日：2024-02-13

申请号：US17917806

申请日：2021-03-29

Applicant: Fingerprint Cards Anacatum IP AB

Inventor： Johan Hammersberg ,  Eric Setterberg ,  Mattias Carlén ,  Su Liu

IPC: G06V40/13 ,  G06V10/145 ,  G06V40/12 ,  G06V10/56 ,  G06V10/82 ,  G06V10/147 ,  G06V40/40 ,  G06F21/32

CPC classification number: G06V40/1318 ,  G06F21/32 ,  G06V10/145 ,  G06V10/147 ,  G06V10/56 ,  G06V10/82 ,  G06V40/1365 ,  G06V40/1388 ,  G06V40/1394 ,  G06V40/45

Abstract: The present invention relates biometric authentication using an optical biometric arrangement comprising an image sensor comprising a photodetector pixel array configured to capture an image of an object, the image sensor being arranged under a controllable light source comprising light source units, the method comprising: providing a light pattern comprising portions of different light intensity for illuminating the object; acquiring an image of the object, the image comprising image portions corresponding to the portions of different light intensity of the light pattern illuminating the object, at least one image portion being captured by pixels in he photodetector pixel array arranged directly under a light source unit being active during image acquisition, and at least one image portion being captured by pixels in the photodetector pixel array arranged under an at least partly in-active illumination area of the controllable light source during image acquisition, performing biometric authentication at least partly based on metrics extracted from the image portions.

公开(公告)号：US20240021010A1

公开(公告)日：2024-01-18

申请号：US18260508

申请日：2022-02-03

Applicant: FINGERPRINT CARDS ANACATUM IP AB

Inventor： Johan Hammersberg ,  Arvid Hammar

IPC: G06V40/13 ,  G06V10/14 ,  G02B27/28 ,  G02B5/20

CPC classification number: G06V40/1318 ,  G06V10/14 ,  G02B27/281 ,  G02B5/208 ,  G02B27/288

Abstract: An optical biometric imaging device includes an image sensor having a plurality of photodetector pixels; a lens assembly having at least one lens configured to focus light reflected by a biometric object onto the image sensor; at least one light source arranged adjacent to the lens assembly and which emits light towards a sensing surface of the biometric imaging device. The at least one light source comprises a waveguide which vertical decouples light; a first linear polarizer arranged between the light source and the image sensor; and a ring-shaped second linear polarizer arranged over the light source to polarize light emitted by the light source in a direction away from the image sensor and having an opening which allows light reflected by a biometric object to reach the lens without being filtered by the second linear polarizer. At least one of the polarizers are rotatable.

公开(公告)号：US20250094754A1

公开(公告)日：2025-03-20

申请号：US18723953

申请日：2022-12-28

Applicant: FINGERPRINT CARDS ANACATUM IP AB

Inventor： Johan Hammersberg ,  Harald Ripa ,  Erik Naeslund

IPC: G06K19/07 ,  G06K19/077

Abstract: An enrollment assistance device, for facilitating biometric enrollment of a user of a smartcard including a biometric arrangement and a power and communication interface, the enrollment assistance device comprising: a carrier having a first side and a second side opposite the first side; and an electronic label comprising: a card interface portion including an electrically conducting structure; a power supply portion including an electrically conducting structure for receiving electric power from a power source; and electrical circuitry connecting the electrically conducting structure of the power supply portion with the electrically conducting structure of the card interface, wherein the electronic label is folded around an edge of the carrier in such a way that the card interface portion of the electronic label is attached to the first side of the carrier, and the power supply portion of the electronic label is attached to the second side of the carrier.