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公开(公告)号：US11620852B2
公开(公告)日：2023-04-04
申请号：US17469473
申请日：2021-09-08
Applicant: OmniVision Technologies, Inc.
Inventor： Paul Wickboldt
Abstract: A method for detecting spoof fingerprints with an under-display fingerprint sensor includes illuminating, with incident light emitted from a display, a target region of a fingerprint sample disposed on a top surface of the display; detecting a first scattered signal from the fingerprint sample with a first image sensor region of an image sensor located beneath the display, the first image sensor region not directly beneath the target region, the first scattered signal including a first portion of the incident light scattered by the target region; determining a scattered light distribution based at least in part on the first scattered signal; and identifying spoof fingerprints based at least in part on the scattered light distribution.
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公开(公告)号：US20230070139A1
公开(公告)日：2023-03-09
申请号：US17469565
申请日：2021-09-08
Applicant: OmniVision Technologies, Inc.
Inventor： Paul Wickboldt
IPC: G06K9/00 , H01L27/146
Abstract: An optical fingerprint sensor with spoof detection includes a plurality of lenses; a pixel array including a plurality of first photodiodes, a line between a center of each first photodiode and an optical center of each lens forms an optical axis; at least one apertured baffle-layer positioned between the image sensor and the plurality of lenses, each having a respective plurality of aperture stops, each aperture stop being center-aligned with the optical axis; and a plurality of second photodiodes intercalated with the plurality of first photodiodes; and a color filter layer between the pixel array and the plurality of lenses, said color filter layer includes a plurality of color filters positioned such that each second photodiode is configured to detect electromagnetic energy having passed through lens, a color filter, and at least one aperture stop not aligned along the optical axis.
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公开(公告)号：US20240122461A1
公开(公告)日：2024-04-18
申请号：US17965358
申请日：2022-10-13
Applicant: OmniVision Technologies, Inc.
Inventor： Paul Wickboldt
CPC classification number: A61B1/0638 , A61B1/000095 , A61B1/045 , A61B1/0655 , A61B1/0684 , A61B1/0002 , A61B1/00186
Abstract: A multi-band imager includes a first light source that illuminates an area of interest during a first time period and a second light source that illuminates the area of interest during a second time period, the second light source comprising a multi-band pass filter, an image sensor capturing first and second images during the first and second time periods. An enhanced image of the area of interest is generated by combining the first image and the second image.
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公开(公告)号：US20230072103A1
公开(公告)日：2023-03-09
申请号：US17469461
申请日：2021-09-08
Applicant: OmniVision Technologies, Inc.
Inventor： Paul Wickboldt , Jau-Jan Deng , Shih-Hsin HSU
Abstract: An optical fingerprint sensor with spoof detection includes a plurality of lenses, an image sensor including a pixel array that includes a plurality of first photodiodes and a plurality of second photodiodes, and at least one apertured baffle-layer having a plurality of aperture stops, wherein each second photodiode is configured to detect light having passed through a lens and at least one aperture stop not aligned with the lens along an optical axis. A method for detecting spoof fingerprints detected using an optical fingerprint sensor includes detecting large-angle light incident on a plurality of anti-spoof photodiodes, wherein the plurality of anti-spoof photodiodes is interleaved with a plurality of imaging photodiodes, determining an angular distribution of light based at least in part one the large-angle light, and detecting spoof fingerprints based at least in part on the angular distribution of light.
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公开(公告)号：US11842563B2
公开(公告)日：2023-12-12
申请号：US17469461
申请日：2021-09-08
Applicant: OmniVision Technologies, Inc.
Inventor： Paul Wickboldt , Jau-Jan Deng , Shih-Hsin Hsu
CPC classification number: G06V40/1394 , G06F3/0428 , G06F3/04166 , G06V40/1318 , G06V40/1365
Abstract: An optical fingerprint sensor with spoof detection includes a plurality of lenses, an image sensor including a pixel array that includes a plurality of first photodiodes and a plurality of second photodiodes, and at least one apertured baffle-layer having a plurality of aperture stops, wherein each second photodiode is configured to detect light having passed through a lens and at least one aperture stop not aligned with the lens along an optical axis. A method for detecting spoof fingerprints detected using an optical fingerprint sensor includes detecting large-angle light incident on a plurality of anti-spoof photodiodes, wherein the plurality of anti-spoof photodiodes is interleaved with a plurality of imaging photodiodes, determining an angular distribution of light based at least in part one the large-angle light, and detecting spoof fingerprints based at least in part on the angular distribution of light.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20230071334A1
公开(公告)日：2023-03-09
申请号：US17975021
申请日：2022-10-27
Applicant: OmniVision Technologies, Inc.
Inventor： Paul Wickboldt
Abstract: A method for detecting spoof fingerprints detected using an optical fingerprint sensor and polarization includes controlling a display of an electronic device to output a pattern of light to illuminate a fingerprint sample touching the display; blocking smaller-angle light from impinging a plurality of anti-spoof photodiodes of the pixel array; filtering larger-angle light incident on the plurality of anti-spoof photodiodes to at least one polarization direction; detecting the larger-angle light using the plurality of anti-spoof photodiodes; correlating the larger-angle light with the pattern of light; determining the fingerprint spoofing based at least in part on the correlation of the larger-angle light and the pattern of light; and wherein the plurality of anti-spoof photodiodes is interleaved with a plurality of imaging photodiodes such that each anti-spoof photodiode of the plurality of anti-spoof photodiodes is between adjacent imaging photodiodes of the plurality of imaging photodiodes.
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公开(公告)号：US11594069B1
公开(公告)日：2023-02-28
申请号：US17469565
申请日：2021-09-08
Applicant: OmniVision Technologies, Inc.
Inventor： Paul Wickboldt
IPC: G06V40/12 , H01L27/146 , G06V40/13
Abstract: An optical fingerprint sensor with spoof detection includes a plurality of lenses; a pixel array including a plurality of first photodiodes, a line between a center of each first photodiode and an optical center of each lens forms an optical axis; at least one apertured baffle-layer positioned between the image sensor and the plurality of lenses, each having a respective plurality of aperture stops, each aperture stop being center-aligned with the optical axis; and a plurality of second photodiodes intercalated with the plurality of first photodiodes; and a color filter layer between the pixel array and the plurality of lenses, said color filter layer includes a plurality of color filters positioned such that each second photodiode is configured to detect electromagnetic energy having passed through lens, a color filter, and at least one aperture stop not aligned along the optical axis.
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8.发明授权公开(公告)号：US11676417B2
公开(公告)日：2023-06-13
申请号：US17975021
申请日：2022-10-27
Applicant: OmniVision Technologies, Inc.
Inventor： Paul Wickboldt
CPC classification number: G06V40/1394 , G06V40/1318
Abstract: A method for detecting spoof fingerprints detected using an optical fingerprint sensor and polarization includes controlling a display of an electronic device to output a pattern of light to illuminate a fingerprint sample touching the display; blocking smaller-angle light from impinging a plurality of anti-spoof photodiodes of the pixel array; filtering larger-angle light incident on the plurality of anti-spoof photodiodes to at least one polarization direction; detecting the larger-angle light using the plurality of anti-spoof photodiodes; correlating the larger-angle light with the pattern of light; determining the fingerprint spoofing based at least in part on the correlation of the larger-angle light and the pattern of light; and wherein the plurality of anti-spoof photodiodes is interleaved with a plurality of imaging photodiodes such that each anti-spoof photodiode of the plurality of anti-spoof photodiodes is between adjacent imaging photodiodes of the plurality of imaging photodiodes.
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公开(公告)号：US20230071596A1
公开(公告)日：2023-03-09
申请号：US17469473
申请日：2021-09-08
Applicant: OmniVision Technologies, Inc.
Inventor： Paul Wickboldt
Abstract: A method for detecting spoof fingerprints with an under-display fingerprint sensor includes illuminating, with incident light emitted from a display, a target region of a fingerprint sample disposed on a top surface of the display; detecting a first scattered signal from the fingerprint sample with a first image sensor region of an image sensor located beneath the display, the first image sensor region not directly beneath the target region, the first scattered signal including a first portion of the incident light scattered by the target region; determining a scattered light distribution based at least in part on the first scattered signal; and identifying spoof fingerprints based at least in part on the scattered light distribution.
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公开(公告)号：US20240263997A1
公开(公告)日：2024-08-08
申请号：US18106928
申请日：2023-02-07
Applicant: OmniVision Technologies, Inc.
Inventor： Paul Wickboldt , Ramakrishna KakaraIa , Jau-Jan Deng
CPC classification number: G01J3/2823 , G06T5/20 , G06V40/1365
Abstract: A method includes capturing an image from a scene with an image sensor. The image sensor has a plurality of spectral pixels and a plurality of image pixels. The method also includes collecting gathered data from the spectral-imaging array based on the light received. The gathered data is separated into spectral pixel data and image pixel data. The spectral pixel data is provided by the spectral pixels and the image pixel data is provided by the image pixels. The method includes both generating spectral information of the image based on the spectral pixel data and generating image information of the image based on the image pixel data.
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