A method for determining calibration parameters for a spectrometer

Heikki Saari (Inventor), Jussi Maekynen (Inventor), Christer Holmlund (Inventor), Uula Kantojaervi (Inventor), Jarkko Antila (Inventor), Rami Mannila (Inventor)

Research output: PatentPatent

Abstract

An imaging spectrometer (500) comprises a Fabry-Perot interferometer (100) and an image sensor (200) having color-sensitive pixels. The interferometer (100) has a first transmission peak (PEAK1) and a second transmission peak (PEAK2). A method calibrating the spectrometer (500) comprises: - providing first calibration light (LB11), which has a narrow spectral peak (MPEAK), - obtaining first detector signal values (S R , S G ) from the image sensor (200) by coupling the first calibration light (LB11) into the spectrometer (500) when the reference spectral peak (MPEAK) is near a first spectral position (» 0 ), - obtaining second detector signal values (S R , S G ) from the image sensor (200) by coupling the first calibration light (LB11) into the spectrometer (500) when the reference spectral peak (MPEAK) is near a second spectral position (» 1 ), - providing second calibration light (LB20), which has a broad bandwidth, and - obtaining third detector signal values (S R , S G ) from the image sensor (200) by coupling the second calibration light (LB20) into the spectrometer (500).

Patent family as of 15.10.2021
CN104390703 A 20150304 CN201310654165 20131011      
CN104390703 B 20160907 CN201310654165 20131011      
DE602013001760 D1 20150625 DE201360001760T 20131009      
EP2720014 A1 20140416 EP20130397532 20131009      
EP2720014 B1 20150513 EP20130397532 20131009      
FI125762 B 20160215 FI20120006066 20121011      
FI20126066 A 20140412 FI20120006066 20121011      
JP2014077792 A2 20140501 JP20130212518 20131010      
JP5541644 B2 20140709 JP20130212518 20131010      
US2014176729 AA 20140626 US20130049636 20131009      
US8780356 BA 20140715 US20130049636 20131009

Link to current patent family on right 

Original languageEnglish
Patent numberEP2720014
IPCH04N 17/ 02 A I
Priority date11/10/12
Publication statusPublished - 16 Apr 2014
MoE publication typeH1 Granted patent

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