公开(公告)号：US20230084614A1

公开(公告)日：2023-03-16

申请号：US17849264

申请日：2022-06-24

Applicant: Meta Platforms Technologies, LLC

Inventor： Song CHEN ,  Xinqiao LIU ,  Byron TAYLOR

IPC: H01L27/146 ,  G02B27/01

Abstract: Methods and systems for image sensing are provided. In one example, an apparatus comprises a semiconductor substrate comprising a light incident surface to receive light, a first pinned photodiode, and a second pinned photodiode, the first pinned photodiode and the second pinned photodiode forming a stack structure in the semiconductor substrate along an axis perpendicular to the light incident surface, the stack structure enabling the first pinned photodiode and the second pinned photodiode to, respectively, convert a first component of the light and a second component of the light to first charge and second charge. The apparatus further comprises one or more capacitors formed in the semiconductor substrate and configured to generate a first voltage and a second voltage based on, respectively, the first charge and the second charge.

公开(公告)号：US20230194882A1

公开(公告)日：2023-06-22

申请号：US17553739

申请日：2021-12-16

Applicant: Meta Platforms Technologies, LLC

Inventor： Hao YU ,  Qing CHAO ,  Lu LU ,  Xinqiao LIU

IPC: G02B27/01 ,  G02B27/28 ,  G03H1/02 ,  G02B6/34 ,  G06F3/01

CPC classification number: G02B27/0179 ,  G02B27/0172 ,  G02B27/286 ,  G03H1/0248 ,  G02B6/34 ,  G06F3/013 ,  G02B2027/0174 ,  G02B2027/0178 ,  G02B2027/0187

Abstract: An eye-tracking system includes a substrate transparent to visible light and configured to be placed in a field of view of an eye of a user, a plurality of waveguides on the substrate, a light source optically coupled to the plurality of waveguides, and a plurality of polarization volume holograms (PVHs) in the field of view of the eye of the user. Each PVH of the plurality of PVHs is optically coupled to a respective waveguide of the plurality of waveguides and is configured to couple a respective light beam out of the respective waveguide towards the eye of the user.

公开(公告)号：US20230153576A1

公开(公告)日：2023-05-18

申请号：US17819047

申请日：2022-08-11

Applicant: Meta Platforms Technologies, LLC

Inventor： Ziyun LI ,  Xin DONG ,  Barbara DE SALVO ,  Xinqiao LIU

IPC: G06N3/04 ,  G06N3/08

CPC classification number: G06N3/0454 ,  G06N3/08

Abstract: Methods, systems, and media for partitioning neural networks are provided. In some embodiments, a method comprises obtaining a training set. The method comprises training a plurality of neural networks using the training set, wherein neural networks differ based on dimensions of one or more layers of the neural networks and a location of a compression block positioned between a first set of layers of a neural network and a second set of layers of the neural network. The method comprises selecting a neural network based on hardware constraints of a system on which the neural network is to be implemented, wherein the first set of layers of the selected neural network are executed by one or more sensor devices of the system, and wherein the second set of layers of the selected neural network are executed by an aggregator computing device of the system.