The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 2026
Filed:
Jan. 14, 2022
Radiometer Medical Aps, Brønshøj, DK;
Thomas Kjaer, Brønshøj, DK;
Radiometer Medical ApS, Brønshøj, DK;
Abstract
A system (10) for determining a refractive index of a sample fluid or a concentration of a component in the sample fluid comprises a transparent sensing element (12) with a plurality of pores (122) for receiving a fluid. The pores reflect or scatter radiation emitted by a radiation emitter (14) of the system differently depending on the refractive index of the fluid. The system comprises one or more detectors (16) for detecting the reflected and/or scattered radiation. The refractive index of the sample fluid is determined based on the detected scattered and/or reflected radiation when the sample fluid is fed into the pores, the corresponding detected scattered and/or reflected radiation when first and second calibration fluids having predetermined refractive indexes and predetermined absorptions at at least two wavelengths are fed into the pores, said predetermined refractive indexes and said predetermined absorptions. Alternatively, a concentration of a component in the sample fluid absorbing at a given wavelength may be determined based on the detected scattered and/or reflected radiation, a predetermined refractive index of the sample fluid, a predetermined refractive index and a predetermined absorption at said wavelength of a calibration fluid, and the detected scattered and/or reflected radiation when the calibration fluid is fed into the pores.