公开(公告)号：US11232284B2

公开(公告)日：2022-01-25

申请号：US16729001

申请日：2019-12-27

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Badrinath Padmanabhan ,  Yiyi Ren ,  Wenshou Chen ,  Richard Mann ,  Alireza Bonakdar

IPC: G06K9/00 ,  G06N20/00 ,  G06K9/62 ,  G06F21/32

Abstract: A system comprising a polarization CMOS image sensor, at least one processor and a non-transitory computer-readable medium having computer-executable instructions stored thereon that, in response to execution by the at least one processor, cause the system to perform actions including receiving, from the polarization CMOS image sensor, polarization information and two-dimensional image information. The polarization information is processed using a machine learning model to generate an output that indicates whether the polarization information represents a valid biometric measurement of a physical feature of a subject.

公开(公告)号：US20210341807A1

公开(公告)日：2021-11-04

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 ,  G02F1/1343 ,  G02F1/1337

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.

公开(公告)号：US20210203872A1

公开(公告)日：2021-07-01

申请号：US16729088

申请日：2019-12-27

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Wenshou Chen ,  Guansong Liu ,  Yiyi Ren ,  Chin Poh Pang ,  Badrinath Padmanabhan ,  Alireza Bonakdar

IPC: H04N5/3745 ,  H01L27/146 ,  H04N5/232 ,  H04N5/378

Abstract: In some embodiments, an image sensor is provided. The image sensor comprises a plurality of photodiodes arranged as a photodiode array. The plurality of photodiodes includes a first set of photodiodes configured as phase detection photodiodes, and a second set of photodiodes configured as polarization detection photodiodes. In some embodiments, a controller is provided. The controller comprises circuitry configured to process signals from a first set of photodiodes of a photodiode array to obtain depth information; process signals from a second set of photodiodes of the photodiode array to obtain polarization information; process the polarization information to obtain an ambiguous set of surface normals; and process the ambiguous set of surface normals using the depth information to obtain a three-dimensional shape image.