Patent ID: 9134244
Filing Date: 2015-09-15
Classification: B82Y,G01N

Abstract:
1. A device for monitoring radiation emitted by luminophores present in an analyte fluid, comprising: a biosensor having at least one non-transparent material arranged on a first side of a substrate of a transparent material and forming at least one aperture for being filled with said analyte fluid, the aperture having a first in-plane dimension which is smaller than half an effective wavelength of radiation in the biosensor and a second in-plane dimension which is larger than half an effective wavelength of radiation of the biosensor, and wherein the aperture provides a plane of transmission; an excitation source for exciting luminophores present in the analyte fluid of said biosensor, wherein the excitation source is disposed at a second side of the substrate opposite the first side so as to provide excitation radiation to the luminophores from the second side of the substrate; a detector for detecting radiation emitted by the luminophores upon excitation; and a polarizing filter arranged in between the biosensor and the detector, wherein the polarizing filter is arranged for substantially attenuating radiation with an electric field parallel to the plane of transmission of the aperture from reaching the detector and for substantially passing radiation with an electric field orthogonal to the plane of transmission of the aperture, wherein said excitation source is a light source emitting polarized light having an elliptical polarization.