Patent ID: 9201018
Filing Date: 2015-12-01
Classification: G01J,G01N

Abstract:
1. A sensor for measuring at least one selected component in a continuous sheet composition having a length and width and that is moving in a machine direction (MD) path which is parallel to the sheet length wherein the sheet has a first surface and a second surface that is opposite to the first side that comprises: an infrared (IR) radiation source for directing a beam of incident infrared radiation to the first surface of the sheet wherein the source has a filament that emits IR radiation having an elongated beam profile that impinges on the first surface with an impinging elongated profile; and a detector operable to receive IR radiation that emerges from the second surface of the sheet wherein (i) the impinging elongated profile has a length that is aligned parallel with the MD to maximize detector spatial resolution in the cross direction (CD) and (ii) the detector comprises at least one detector element having a length that is aligned parallel in the MD.