Spectrometer and interferometric method

Heikki Saari (Inventor)

Research output: PatentPatent


The invention relates to a spectrometer, a spectrometric method and detector, and a new use of an interferometer. The spectrometer comprises a Fabry-Perot interferometer (120), to which light can be guided from the object (100) being investigated, in order to produce an interference image, and a detector (130) at which the interference image is aimed. The transmittance of the interferometer (120) is spectrally sliced to at least two separate wavelength bands. For its parts, the detector (130) is arranged to detect the interference image from at least two separate wavelength bands spatially. The detector is arranged to detect the said wavelength bands simultaneously, by exploiting the response of the image elements of the detector, calibrated as a function of the mirror gap of the interferometer, in order to detect simultaneously at least two different orders of the interference. With the aid of the invention, it is possible to implement spectrometric measurements more quickly, or to obtain more information on the object at one time.

Patent family as of 1.9.2021

EP2021748 A2 20090211 EP20070730777 20070522      
EP2021748 A4 20121205 EP20070730777 20070522      
FI119830 B 20090331 FI20060005348 20060524      
FI20065348 A 20071125 FI20060005348 20060524      
FI20065348 A0 20060524 FI20060005348 20060524      
US2010245832 AA 20100930 US20070302013 20070522      
US8130380 BB 20120306 US20070302013 20070522      
WO07135244 A2 20071129 WO2007FI50290 20070522      
WO07135244 A3 20080403 WO2007FI50290 20070522

Link to current patent family on right 

Original languageEnglish
Patent numberEP2021748
IPCG01B 9/ 02 A I
Priority date22/05/07
Publication statusPublished - 30 Sept 2010
MoE publication typeH1 Granted patent


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