Device and method for optical measurement of a target

Jarkko Antila (Inventor), Jussi Tenhunen (Inventor)

    Research output: PatentPatent


    A device and a method for optical measurement of a target, wherein the target is irradiated with radiation beam (15) and a measurement beam (27) is received from the target and detected. Commonly used absorbance, reflectance and fluorescence measurements do not provide adequate information in e.g. measuring small contents of sulphur compounds. The present solution provides a new Raman spectrometer which is suitable for mass applications. A target is activated with pulses of a laser diode (12). The Raman signatures are measured and integrated successively with a point detector (44). A Fabry-Perot interferometer (42) on the measurement path is successively controlled into corresponding pass bands. While high spectral resolution or range is not required it is possible to use small-sized and low cost components.

    Patent family as of 12.11.2021
    EP3060890 A1 20160831 EP20140855616 20141021      
    EP3060890 A4 20171122 EP20140855616 20141021      
    US2016252394 AA 20160901 US20140030697 20141021      
    US9772228 BB 20170926 US20140030697 20141021      
    WO15059353 A1 20150430 WO2014FI50791 20141021

    Link to current patent family on right 

    Original languageEnglish
    Patent numberUS2016252394
    IPCG01J 3/ 26 A I
    Priority date21/10/14
    Publication statusPublished - 1 Sept 2016
    MoE publication typeH1 Granted patent


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