System and Methods for Measuring Stimulated Raman Scattering

    公开(公告)号:US20240423512A1

    公开(公告)日:2024-12-26

    申请号:US18700512

    申请日:2022-10-11

    Applicant: Google LLC

    Abstract: The present disclosure provides computer-implemented methods, systems, and devices for non-invasively measuring a level of an analyte in a user using Stimulated Raman Scattering. A user computing device includes a Raman pump source that emits pump light toward a skin surface of the user at a pump wavelength. The device includes a Stokes source that emits Stokes light toward the skin surface at a plurality of Stokes wavelengths within a window of Raman measurement wavelengths. The Stokes light comprises a plurality of narrowband emissions at a respective plurality of center wavelengths ranging across the window of Raman measurement wavelengths. The device includes a photodetector that measures light that emanates from the skin surface. The device includes a processor that processes the measured light to provide an estimated analyte level of the user.

    Electrode System for Wearable Devices

    公开(公告)号:US20210077011A1

    公开(公告)日:2021-03-18

    申请号:US17004394

    申请日:2020-08-27

    Applicant: Google LLC

    Abstract: A wearable device includes at least one attachment member and an electrodermal activity (EDA) sensor comprising an integrated electrode pair physically coupled to the at least one attachment member. The electrodermal activity sensor is configured to provide an EDA signal in response to contact between the integrated electrode pair and a skin surface of a user. The integrated electrode pair includes at least two concentric electrodes radially separated by at least one insulator. Each of the at least two concentric electrodes includes an upper surface configured to contact the skin surface of the user in order to generate the EDA signal.

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