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    Liquid crystal on silicon device with microlens
    1.
    发明授权
    Liquid crystal on silicon device with microlens 有权

    公开(公告)号：US11480836B2

    公开(公告)日：2022-10-25

    申请号：US16864890

    申请日：2020-05-01

    Applicant: OmniVision Technologies, Inc.

    Inventor： Alireza Bonakdar ,  Libo Weng ,  Badrinath Padmanabhan

    IPC: G02F1/1362 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1343

    Abstract: A liquid crystal on silicon device is described. The liquid crystal on silicon device includes a plurality of mirror electrodes, a transparent electrode, a liquid crystal material, and a plurality of microlenses. The plurality of mirror electrodes are arranged periodically to form an array of pixels, each pixel included in the array of pixels configurable to reflect incident light. The transparent electrode is optically aligned with the plurality of mirror electrodes. The liquid crystal material is disposed between the transparent electrode and the plurality of mirror electrodes. The plurality of microlenses are optically aligned with the plurality of mirror electrodes. Each microlens included in the plurality of microlenses is positioned to focus the incident light on a respective one of the plurality of mirror electrodes.

    Determining Depth Information From A Single Camera
    3.
    发明申请
    Determining Depth Information From A Single Camera 有权

    公开(公告)号：US20210176447A1

    公开(公告)日：2021-06-10

    申请号：US17113011

    申请日：2020-12-05

    Applicant: OmniVision Technologies, Inc.

    Inventor： Richard Mann ,  Badrinath Padmanabhan ,  Boyd Fowler ,  Alireza Bonakdar ,  Eiichi Funatsu

    IPC: H04N13/218 ,  G06T7/593 ,  G06T7/571 ,  H04N13/257 ,  H04N5/232

    Abstract: An optical system comprises an imaging lens for imaging an object to an image and a sensing pixel array for detecting lights from the object toward the image. The sensing pixel array comprises a first sensing pixel and a second sensing pixel, each sensing pixel comprising a microlens covering a one-dimensional series of photodiodes having n photodiodes. A photodiode at an end of the one-dimensional series of photodiodes of the first sensing pixel detects a first light from the object toward the image, and a photodiode at an opposite end of the one-dimensional series of photodiodes of the second sensing pixel detects a second light from the object toward the image, where the first light and the second light pass opposite parts of the imaging lens.

    Flare-blocking image sensor
    5.
    发明授权
    Flare-blocking image sensor 有权

    公开(公告)号：US11469264B2

    公开(公告)日：2022-10-11

    申请号：US16777027

    申请日：2020-01-30

    Applicant: OmniVision Technologies, Inc.

    Inventor： Alireza Bonakdar ,  Shinn-Jhy Lian ,  Badrinath Padmanabhan

    IPC: H01L27/146

    Abstract: A flare-blocking image sensor includes large pixels and small pixels, a microlens, and an opaque element. The large pixels and small pixels form a first and second pixel array respectively, each having a pixel pitch Px and Py. The second pixel array is offset from the first pixel array by ½Px and ½Py. A first large pixel of the large pixels is between and collinear with a first and a second small pixel separated by √{square root over (Px2+Py2 )} in a first direction and each having a width W less than both pixel pitch Px and Py. The microlens is aligned with the first large pixel. The opaque element is between the first large pixel and the microlens and extends, in the first direction, less than ½(√{square root over (Px2+Py2)}−W) from the first small pixel toward the second small pixel. The opaque element has a width perpendicular to the first direction not exceeding width W.

    DEVICES AND METHODS FOR OBTAINING THREE-DIMENSIONAL SHAPE INFORMATION USING POLARIZATION AND TIME-OF-FLIGHT DETECTION PIXEL CELLS
    7.
    发明申请
    DEVICES AND METHODS FOR OBTAINING THREE-DIMENSIONAL SHAPE INFORMATION USING POLARIZATION AND TIME-OF-FLIGHT DETECTION PIXEL CELLS 有权

    公开(公告)号：US20210352234A1

    公开(公告)日：2021-11-11

    申请号：US16870687

    申请日：2020-05-08

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Badrinath Padmanabhan ,  Boyd Fowler ,  Alireza Bonakdar ,  Richard Mann

    IPC: H04N5/369 ,  H04N5/378 ,  H04N5/3745 ,  H01L27/146

    Abstract: In some embodiments, an imaging system is provided. The imaging system comprises an image sensor, a light source, control circuitry, and function logic. The image sensor comprises a pixel array that includes a plurality of polarization pixel cells and a plurality of time-of-flight pixel cells. The light source is configured to emit light pulses to an object. The control circuitry is coupled to the light source and the pixel array, and is configured to synchronize a timing of the emission of the light pulses with sensing of photons reflected from the object by the plurality of time-of-flight pixel cells to generate depth information. The function logic is configured to determine a set of ambiguous surface normals using signals generated by the plurality of polarization pixel cells, and to disambiguate the set of ambiguous surface normals using the depth information to generate a three-dimensional shape image.

    Flare-blocking image sensor
    8.
    发明授权
    Flare-blocking image sensor 有权

    公开(公告)号：US12136637B2

    公开(公告)日：2024-11-05

    申请号：US17963015

    申请日：2022-10-10

    Applicant: OmniVision Technologies, Inc.

    Inventor： Alireza Bonakdar ,  Shinn-Jhy Lian ,  Badrinath Padmanabhan

    IPC: H01L27/146

    Abstract: A flare-blocking image sensor includes large pixels and small pixels, a microlens, and an opaque element. The large pixels and small pixels form a first and second pixel array respectively, each having a pixel pitch Px and Py. The second pixel array is offset from the first pixel array by ½Px and ½Py. A first large pixel of the large pixels is between and collinear with a first and a second small pixel separated by √{square root over (Px2+Py2)} in a first direction and each having a width W less than both pixel pitch Px and Py. The microlens is aligned with the first large pixel. The opaque element is between the first large pixel and the microlens and extends, in the first direction, less than 1 2 ⁢ ( P x 2 + P y 2 - W ) from the first small pixel toward the second small pixel. The opaque element has a width perpendicular to the first direction not exceeding width W.

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