System and method for illumination source identification

    公开(公告)号:US20240219232A1

    公开(公告)日:2024-07-04

    申请号:US18335269

    申请日:2023-06-15

    Abstract: A light detection module has N optical channels, each with an optical filter, a detector, and an amplifier; and an N×1 switch with N input ports each connected to one corresponding output port of each channel to receive an amplified detector output corresponding to a filtered optical intensity incident on that detector. The switch cycles between channels, connecting each amplified detector output in turn to the output port. An ADC samples a time dependent optical intensity signal from the switch, generating a corresponding ADC digital signal output. A microcontroller, connected to the N×1 switch and the ADC, controls acquisition by the ADC to provide a digital voltage data stream from each channel; making the average optical intensity value characterizing the voltage data stream available from each channel at a digital output port of the microcontroller, as N data values, characterizing the light incident on the N channels of the module.

    BLENDING PROCESS END POINT DETECTION
    4.
    发明公开

    公开(公告)号:US20240068869A1

    公开(公告)日:2024-02-29

    申请号:US18503220

    申请日:2023-11-07

    CPC classification number: G01J3/0275 G01J2003/2833

    Abstract: In some implementations, a device may identify, based on spectroscopic data, a pseudo steady state end point indicating an end of a pseudo steady state associated with the blending process. The device may identify a reference block and a test block from the spectroscopic data based on the pseudo steady state end point. The device may generate a raw detection signal associated with the reference block and a raw detection signal associated with the test block. The device may generate a statistical detection signal based on the raw detection signal associated with the reference block and the raw detection signal associated with the test block. The device may determine whether the blending process has reached a steady state based on the statistical detection signal.

    Spectrometer, and apparatus and method for estimating bio-information

    公开(公告)号:US11874168B2

    公开(公告)日:2024-01-16

    申请号:US17723815

    申请日:2022-04-19

    CPC classification number: G01J3/0275 G01J3/0202 G01J3/0229 G01J3/18

    Abstract: A spectrometer includes: a dispersive element configured to split light; a detector comprising a plurality of pixels configured to receive the split light; an optical mask disposed in an optical path of the light between the dispersive element and the detector and comprising a plurality of light transmitting portions and a plurality of light blocking portions which are arranged alternately; and a driver configured to control a position of the optical mask or a position of the detector, and change a light incident area of each of the plurality of pixels to receive the light incident on the plurality of light transmitting portions of the optical mask.

    Cross-comb spectroscopy
    7.
    发明授权

    公开(公告)号:US11841271B2

    公开(公告)日:2023-12-12

    申请号:US17533926

    申请日:2021-11-23

    CPC classification number: G01J3/4338 G01J3/027 G01J3/0275 G01J2003/4332

    Abstract: A system for performing spectroscopy, including a first frequency comb source outputting first electromagnetic radiation comprising a first frequency comb centered at a first wavelength and having a first repetition rate; a second frequency comb source outputting a second electromagnetic radiation comprising a second frequency comb centered at a second wavelength and having a second repetition rate; a nonlinear device positioned to receive the first frequency comb and the second frequency comb, wherein the nonlinear device interacts the first frequency comb and the second frequency comb through sum frequency generation or difference frequency generation so as to generate an output electromagnetic radiation; and a detection system outputting a signal in response to detecting an interference of the output electromagnetic radiation with a third electromagnetic radiation, the signal comprising information used for determining a spectrum of at least the first frequency comb or the second frequency comb.

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