Patent ID: 11921044
Assignee: BAUMER INSPECTION GMBH
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. A method for a fluorescence-based inspection of a laminate product which is composed of a plurality of layers, wherein a layer contains at least one fluorophore having an excitation spectrum and an emission spectrum, the method comprising the steps of:
providing a radiation source for generating a first electromagnetic radiation in a first wavelength range containing the excitation spectrum of the at least one fluorophore, wherein the first radiation source is configured as a UV lamp, as UV light or as a black light lamp so that the first electromagnetic radiation is UV-A radiation, and a second electromagnetic radiation in a second wavelength range containing the emission spectrum of the at least one fluorophore;
providing an imaging device for generating images of an inspection area in which the laminate product is arranged;
providing an image data processing device for image processing of the image;
positioning the laminate product in the inspection area;
irradiating with the radiation source the inspection region with the first electromagnetic radiation containing the excitation spectrum of the at least one fluorophore;
taking at least one fluorescence image of the inspection region irradiated with the first electromagnetic radiation containing the excitation spectrum of the at least one fluorophore with the imaging device;
irradiating with the radiation source the inspection region with the second electromagnetic radiation containing the emission spectrum of the at least one fluorophore;
taking at least one reference image of the inspection area irradiated with the second electromagnetic radiation containing the emission spectrum of the at least one fluorophore with the imaging device; and
generating, via the image data processing device, a correction image based on the at least one fluorescence image and the at least one reference image,
wherein,
the first wavelength range does not overlap with the second wavelength range, and
the irradiating with the first electromagnetic radiation does not occur simultaneously with the irradiating of the second electromagnetic radiation.