Patent ID: 7141212
Filing Date: 2006-11-28
Classification: B01L,G01N

Abstract:
1. An assay result measuring device comprising: (a) a receiver for receiving an assay device for an analyte and holding it in a position, said assay device having a detection zone in which a light-absorbing material is accumulated when a sample containing the analyte is applied to it; (b) a source of light of a wavelength that is absorbed by the light absorbing material, wherein light from the source of light is diffuse such that it substantially uniformly irradiates a region of a received assay device which encompasses and extends beyond the detection zone; (c) a detector disposed to detect light from the diffuse light source after it has passed through the detection zone of a received assay device and any light-absorbing material accumulated therein; and (d) means for receiving a signal from the detector and generating an assay result therefrom; wherein the source of diffuse light is a pulsed source, and wherein the detector and/or the means for receiving a signal from the detector provide a signal used in generating an assay result in phase, with the pulsed light source.