System and method for optic measurement of a target

Heikki Saari (Inventor), Christer Holmlund (Inventor), Uula Kantojarvi (Inventor), Rami Mannila (Inventor), Antti Lamminpaa (Inventor), Pekka Teppola (Inventor)

Research output: PatentPatent


The invention relates to a system and a method for optical measurement of a target, wherein the target is illuminated, either actively illuminated, reflecting ambient light, or self illuminating, and a measurement light beam received from the target or through it is detected. The prior art optical measurement systems generally include mechanical filter wheels and photomultiplier tubes, which cause the equipment to be expensive, large-sized and often not sufficiently accurate and stable. The objective of the invention is achieved with a solution, in which the illuminating light beam and/or measurement light beam is led through a Fabry-Perot interferometer or a set of two or more Fabry-Perot Interferometers, and the Fabry-Perot interferometer or a set of two or more Fabry-Perot Interferometers is controlled into different modes during the measurement of a single target. The invention can be applied in optical measurements where, for example, reflectance, absorption of fluorescence of the target is measured.

Patent family as of 9.9.2021 
EP2414794 A1 20120208 EP20100758114 20100331      
EP2414794 A4 20171220 EP20100758114 20100331      
FI20095356 A0 20090402 FI20090005356 20090402      
US2012038928 AA 20120216 US20100258471 20100331      
US8792100 BB 20140729 US20100258471 20100331      
US2014218736 AA 20140807 US20140247301 20140408      
US9581499 BB 20170228 US20140247301 20140408      
WO10112679 A1 20101007 WO2010FI50258 20100331

Link to current patent family on right 

Original languageEnglish
Patent numberUS2012038928
IPCG01B 9/ 02 A I
Priority date31/03/10
Publication statusPublished - 16 Feb 2012
MoE publication typeH1 Granted patent


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