Patent ID: 7763856
Filing Date: 2010-07-27
Classification: G01N

Abstract:
1. A method of using an excitation arrangement, the method comprising: while an object travels along a path, operating the excitation arrangement to provide excitation to the object within a range of excitation photon energies, the excitation causing the object to emanate light; the act of operating the excitation arrangement including: in each of a sequence of segments of the path, providing an excitation pattern with a respective non-binary excitation spectrum within the range of excitation energies, the respective excitation spectra of at least two of the segments being different than each other and including: a non-interference-like transition between the at least two segments; in response to the different excitation spectra, the object emanating light differently so that, while the object travels along a part of the path that includes the sequence of segments, the emanating light has time variation.