Patent ID: 9443181
Filing Date: 2016-09-13
CPC Classification: B82Y,C12Q,G01N,G06K,Y10T

Claim Text:
1. A method of optically encoding an object, wherein the method comprises: combining the object with a composition comprising two or more lanthanide materials, wherein each lanthanide material comprises a host, an absorber and one and more emitters, and wherein the lanthanide materials emit detectable electromagnetic radiation upon excitation with absorbable electromagnetic energy; irradiating the object with radiation having a wavelength greater than 800 nm, thereby inducing emission from the emitters at a radiation wavelength less than 800 nm, wherein each emitter emits at a different wavelength; measuring relative integrated emission intensities from the emitters within a different wavelength range for each emitter; calculating relative ratios of the integrated emission intensities from the emitters, the relative ratios comprising resolvable ratios; calculating a number of optical codes C, the number of optical codes C being equal to R assigning a unique optical code to each calculated relative ratio; and processing the unique code to identify the object.