Patent ID: 8228502
Filing Date: 2012-07-24
Classification: G01J,G01N

Abstract:
1. A measurement device comprising: a sensor accepting a sample; a wavelength-tunable light source irradiating wavelength-tunable light to detect a reaction of the sensor; an additional light source irradiating wavelength-fixed light to detect an initial time of the reaction in an off-state of the wavelength-tunable light source, wherein a variation of a transmittance spectrum is measured using the wavelength-tunable light source in an off-state of the additional light source after measuring the initial time of the reaction; a coupler combining the wavelength-tunable light source and the additional light source and irradiating the combined input light on the sensor; and an optical power measurer detecting the reaction of the sensor from an output light transmitted through or reflected by the sensor.