Teknologian Tutkimuskeskus Vtt

Spectral Engines Oy

Teknologian Tutkimuskeskus Vtt Oy

Uula Kantojärvi

Jarkko Antila

Heikki Saari

Christer Holmlund

Rami Mannila

Jussi Mäkynen

Altti AKUJÄRVI

Antti LamminpÄÄ

According to an example aspect of the present invention, there is provided a method for analysing a chemical composition of a target, the method comprising placing an electrically tunable Fabry-Perot interferometer in a path of radiation emitted by a radiation source, and detecting the radiation, which has passed the Fabry-Perot interferometer and which has passed or was reflected by the target, by means of a detector, and wherein detection is made such that multiple pass bands are allowed to be detected simultaneously.

Method and system for analysing a chemical composition of a target using a Fabry-Perot interferometer

An imaging spectrometer includes a Fabry-Perot interferometer and an image sensor having color-sensitive pixels. The interferometer has a first transmission peak and a second transmission peak (PEAK2). A method calibrating the spectrometer includes providing first calibration light, which has a narrow spectral peak, obtaining first detector signal values from the image sensor by coupling the first calibration light into the spectrometer when the reference spectral peak is near a first spectral position, obtaining second detector signal values from the image sensor by coupling the first calibration light into the spectrometer when the reference spectral peak is near a second spectral position, providing second calibration light, which has a broad bandwidth, and obtaining third detector signal values from the image sensor by coupling the second calibration light into the spectrometer.

Method for determining calibration parameters for a spectrometer

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Espoo, Finland

Uula Kantojärvi