Patent ID: 7796242
Filing Date: 2010-09-14
Classification: C09K,G01N,G07D

Abstract:
1. An information identification device comprising: a light source for irradiating, with exciting light, a light-emitting member containing a rare-earth complex; a measurement section for receiving light emitted from the light-emitting member, and for measuring spectral intensities of the light; a computation section for computing a ratio of spectral intensities at a plurality of different wavelengths among the spectral intensities thus measured; and an identification section for identifying identification information corresponding to the ratio thus computed, wherein the computation section computes a ratio between an intensity of spectra containing a first-wavelength line spectrum based on magnetic dipole transition and an intensity of spectra containing a second-wavelength line spectrum based on electric dipole transition among the spectral intensities measured by the measurement section.