Method for identifying materials
AssigneePolysecure GmbH
InventorsJochen Moesslein, Daniel Kirchenbauer, Philip Katus, Martin Fahr
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Abstract
The present invention relates to a method of identifying and/or distinguishing materials by means of luminescence, wherein at least one luminescent substance is incorporated into the material and/or applied onto the material and the luminescence behaviour of the substance is analysed after excitation by means of radiation, and the use thereof for identifying and/or sorting and/or recycling and/or authenticating and/or performing a quality check and/or formulation check on materials.
Claims21
A method for identifying and/or distinguishing materials by means of luminescence, comprising:
- providing a material wherein at least one luminescent substance is incorporated into the material and/or applied onto the material,
- exciting the material by means of radiation,
- measuring and analyzing luminescence behavior of the substance after the excitation by means of radiation, wherein the luminescence behavior is luminescence emission behavior over time, and
- after one or more time intervals, determining emission intensity for one or more emission wavelength(s) wherein intensity ratios are formed from the emission intensity for identical emission wavelengths or different emission wavelengths.
A method for identifying and/or distinguishing materials by means of luminescence, comprising:
- providing a material wherein at least one luminescent substance is incorporated into the material and/or applied onto the material,
- exciting the material by means of radiation,
- after one or more time intervals, measuring and analyzing luminescence behavior of the substance after the excitation by means of radiation, wherein the luminescence behavior is luminescence emission behavior over time, wherein a decay constant is determined for one or more emission wavelengths.
Dependencies are inferred from the claim text.