AN OPTICAL MEASUREMENT DEVICE
    23.
    发明公开

    公开(公告)号:US20240019368A1

    公开(公告)日:2024-01-18

    申请号:US18251471

    申请日:2021-11-03

    Inventor: Per Klockar

    CPC classification number: G01N21/554 G01N2201/06106 G01N2201/06153

    Abstract: The present invention relates to a method and device for determining a property of an ambient environment. The device comprises a plasmonic sensing element; a first light source for illuminating a first and a second light sensor, the first sensor via the plasmonic sensing element; a second light source for illuminating the light sensors; circuitry for executing: a control function controlling light sources, a function receiving a measurement from the first sensor, and a first signal from the second sensor, a function receiving a reference from the first sensor, and a second signal from the second sensor, a function determining the property by comparing the measurement and reference signals, and the control function further controlling light sources such that a relation of intensities of light emitted by the light sources is constant over time.

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