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公开(公告)号：US11978278B2
公开(公告)日：2024-05-07
申请号：US18249263
申请日：2021-11-23
发明人： Arvid Hammar , Hans Martinsson
CPC分类号： G06V40/1318 , G02B5/204 , G02B5/28 , G06F3/0412 , G06V40/1324 , G06V40/1365
摘要： A display arrangement comprising an optical biometric imaging device for imaging a biometric object comprising: an image sensor comprising a plurality of photodetector pixels; a lens arrangement comprising at least one lens configured to focus light reflected by a biometric object onto the image sensor; an aperture layer arranged between the object to be imaged and the image sensor, wherein the aperture layer comprises an aperture configured to limit the amount of light reaching the image sensor; and a filter element arranged in the aperture and configured to block light within a first wavelength range, wherein an area of the filter element is smaller than an area of the aperture so that a portion of light within the first wavelength range reaching the aperture layer pass through the aperture.
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2.发明公开公开(公告)号：US20230177869A1
公开(公告)日：2023-06-08
申请号：US17920073
申请日：2021-04-27
发明人： Matthew Liptrot , Arvid Hammar , Hans Martinsson
IPC分类号： G06V40/13 , G06V40/12 , G02B27/30 , H01L27/146
CPC分类号： G06V40/1324 , G06V40/1394 , G02B27/30 , H01L27/14625 , G02B5/201
摘要： An optical biometric imaging device comprising: an image sensor comprising a plurality of photodetector pixels; a plurality of collimating structures arranged above the image sensor, the collimating structures being configured to limit the incident angle of light reaching the image sensor to be lower than a first predetermined incident angle Θ1; wherein at least a subset of the collimating structures comprises a light-blocking element configured to block light having an incident angle lower than a second predetermined incident angle Θ2, the second incident angle being lower than the first incident angle, wherein the light-blocking element is configured to allow light having an incident angle between the first and second predetermined incident angles to pass and wherein the light-blocking element is configured to block light within a first predetermined wavelength range.
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公开(公告)号：US11941909B2
公开(公告)日：2024-03-26
申请号：US18249263
申请日：2021-11-23
发明人： Arvid Hammar , Hans Martinsson
CPC分类号： G06V40/1318 , G02B5/204 , G02B5/28 , G06F3/0412 , G06V40/1324 , G06V40/1365
摘要： A display arrangement comprising an optical biometric imaging device for imaging a biometric object comprising: an image sensor comprising a plurality of photodetector pixels; a lens arrangement comprising at least one lens configured to focus light reflected by a biometric object onto the image sensor; an aperture layer arranged between the object to be imaged and the image sensor, wherein the aperture layer comprises an aperture configured to limit the amount of light reaching the image sensor; and a filter element arranged in the aperture and configured to block light within a first wavelength range, wherein an area of the filter element is smaller than an area of the aperture so that a portion of light within the first wavelength range reaching the aperture layer pass through the aperture.
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4.发明公开公开(公告)号：US20230410550A1
公开(公告)日：2023-12-21
申请号：US18249263
申请日：2021-11-23
发明人： Arvid Hammar , Hans Martinsson
CPC分类号： G06V40/1318 , G06V40/1365 , G06V40/1324 , G02B5/28 , G02B5/204 , G06F3/0412
摘要： A display arrangement comprising an optical biometric imaging device for imaging a biometric object comprising: an image sensor comprising a plurality of photodetector pixels; a lens arrangement comprising at least one lens configured to focus light reflected by a biometric object onto the image sensor; an aperture layer arranged between the object to be imaged and the image sensor, wherein the aperture layer comprises an aperture configured to limit the amount of light reaching the image sensor; and a filter element arranged in the aperture and configured to block light within a first wavelength range, wherein an area of the filter element is smaller than an area of the aperture so that a portion of light within the first wavelength range reaching the aperture layer pass through the aperture.
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