Patent ID: 8699023
Filing Date: 2014-04-15
Classification: G01B,G01N

Abstract:
1. A reflectivity measuring device comprising: a measurement light source configured to supply irradiation light to a measurement object; a spectroscopic detection unit configured to detect, at multi-wavelength, intensity of the irradiation light and intensity of reflected light from the measurement object; a coefficient recording unit configured to record a conversion coefficient to convert a detected value of each wavelength's intensity of the irradiation light into a value corresponding to each wavelength's intensity of reflected light from a reference measurement object; a reflectivity calculation unit configured to calculate each wavelength's reflectivity of the measurement object based on the value corresponding to the each wavelength's intensity of the reflected light from the reference measurement object obtained from the detected value of the each wavelength's intensity of the irradiation light and the conversion coefficient; a reference optical waveguide configured to have at one end a reference light reception surface irradiated with the irradiation light from the measurement light source and of which another end is optically coupled to the spectroscopic detection unit; a first measurement optical waveguide configured to have at one end an irradiation light reception surface irradiated with the irradiation light from the measurement light source and at another end an irradiation light supply surface that supplies the irradiation light to the measurement object; and a second measurement optical waveguide configured to have at one end a reflected light reception surface to receive the reflected light from the measurement object and of which another end is optically coupled to the spectroscopic detection unit.