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公开(公告)号：US11644606B1
公开(公告)日：2023-05-09
申请号：US17501586
申请日：2021-10-14
Applicant: OmniVision Technologies, Inc.
Inventor： Victor Lenchenkov
CPC classification number: G02B5/3058 , H04N5/23229
Abstract: An image sensor configured to resolve intensity and polarization has multiple pixels each having a single microlens adapted to focus light on a central photodiode surrounded by at least a first, a second, a third, and a fourth peripheral photodiodes, where a first polarizer at a first angle is disposed upon the first peripheral photodiode, a third polarizer at a third angle is disposed upon the third peripheral photodiode, a second polarizer at a second angle is disposed upon the second peripheral photodiode, and a fourth polarizer at a fourth angle is disposed upon the fourth peripheral photodiode, the first, second, third, and fourth angles being different. In embodiments, 4 or 8 peripheral photodiodes are provided, and in an embodiment the polarizers are parts of an octagonal polarizer.
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Patent Agency Ranking
公开(公告)号：US20220239840A1
公开(公告)日：2022-07-28
申请号：US17576816
申请日：2022-01-14
Applicant: OmniVision Technologies, Inc.
Inventor： Victor Lenchenkov , Andreas Suess
Abstract: An image sensor has diffractive microlenses over pixels with central structures and ring(s) of material having index of refraction different from that of background material. Disposed beneath the diffractive microlenses are photodiodes that permit determining ratios of illumination of peripheral photodiodes to illumination of central photodiodes of the pixels, and, in embodiments, circuitry for determining said ratio. In embodiments, the ratio is used to find illumination wavelengths; and in other embodiments the ratio is used to determine focus of an imaging lens providing illumination. A method determines color by passing light through a diffractive lens disposed above photodiodes of the diffractive pixel and determining color from illumination peripheral and central photodiodes. An autofocus method of determining focus includes passing light through a diffractive lens and determining focus from illumination of peripheral photodiodes and central photodiodes of the pixel. In embodiments, the central structures are disks and rings are round.
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公开(公告)号：US20230317754A1
公开(公告)日：2023-10-05
申请号：US17712453
申请日：2022-04-04
Applicant: OmniVision Technologies, Inc.
Inventor： Victor Lenchenkov
IPC: H01L27/146
CPC classification number: H01L27/14627 , H01L27/14649
Abstract: A polarization-sensitive infrared sensitive image sensor, including a plurality of pixels in a semiconductor substrate and forming a pixel array, each pixel including: at least one microlens; at least one photodiode; and at least one light absorbing patch above a corresponding photodiode, each light absorbing patch oriented at a predetermined angle with respect to each of the at least one light absorbing patch, the light absorbing patch absorbs a portion of incident light dependent on polarization of the incoming light relative to the predetermined angle of the light absorbing patch.
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公开(公告)号：US20230317752A1
公开(公告)日：2023-10-05
申请号：US17713058
申请日：2022-04-04
Applicant: OmniVision Technologies, Inc.
Inventor： Victor Lenchenkov
IPC: H01L27/146 , G02B5/30 , G02B5/18 , H04N5/235
CPC classification number: H01L27/14625 , G02B5/3058 , G02B5/1814 , H01L27/14643 , H04N5/2354 , H04N5/2351 , G02B2207/101
Abstract: An image sensor has an array of a tiling pattern of cells, each cell having at least one spiral nanowire circular polarizer formed of nanowires less than 80 nanometers in width; and photodiodes to receive incoming light form the circular polarizer. In embodiments, the polarizer is a descending spiral circular polarizer including at least four nanowires each about fifty nanometers wide at successive levels in the polarizer. In other embodiments, the circular polarizer comprises a flat spiral nanowire of width about seventy nanometers width, the flat spiral nanowire interrupted by cuts, disposed over multiple photodiodes to analyze a diffraction pattern from the polarizer.
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公开(公告)号：US12120426B2
公开(公告)日：2024-10-15
申请号：US17576816
申请日：2022-01-14
Applicant: OmniVision Technologies, Inc.
Inventor： Victor Lenchenkov , Andreas Suess
CPC classification number: H04N23/672 , G02B5/1814 , G02B5/201 , G02B7/28 , H01L27/14621 , H01L27/14627 , H01L27/14645 , H04N25/11
Abstract: An image sensor has diffractive microlenses over pixels with central structures and ring(s) of material having index of refraction different from that of background material. Disposed beneath the diffractive microlenses are photodiodes that permit determining ratios of illumination of peripheral photodiodes to illumination of central photodiodes of the pixels, and, in embodiments, circuitry for determining said ratio. In embodiments, the ratio is used to find illumination wavelengths; and in other embodiments the ratio is used to determine focus of an imaging lens providing illumination. A method determines color by passing light through a diffractive lens disposed above photodiodes of the diffractive pixel and determining color from illumination peripheral and central photodiodes. An autofocus method of determining focus includes passing light through a diffractive lens and determining focus from illumination of peripheral photodiodes and central photodiodes of the pixel. In embodiments, the central structures are disks and rings are round.
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公开(公告)号：US20230123763A1
公开(公告)日：2023-04-20
申请号：US17501586
申请日：2021-10-14
Applicant: OmniVision Technologies, Inc.
Inventor： Victor Lenchenkov
Abstract: An image sensor configured to resolve intensity and polarization has multiple pixels each having a single microlens adapted to focus light on a central photodiode surrounded by at least a first, a second, a third, and a fourth peripheral photodiodes, where a first polarizer at a first angle is disposed upon the first peripheral photodiode, a third polarizer at a third angle is disposed upon the third peripheral photodiode, a second polarizer at a second angle is disposed upon the second peripheral photodiode, and a fourth polarizer at a fourth angle is disposed upon the fourth peripheral photodiode, the first, second, third, and fourth angles being different. In embodiments, 4 or 8 peripheral photodiodes are provided, and in an embodiment the polarizers are parts of an octagonal polarizer.
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