Patent ID: 8599371
Filing Date: 2013-12-03
Classification: G01N,H01L,H04N

Abstract:
1. A method of obtaining high dynamic range, spectrally, spatially and angularly resolved radiance of a sample surface of a sample, said method comprising the steps of: a) irradiating electromagnetic radiation of controlled spectral distribution from at least one electromagnetic irradiator onto a sample surface of a sample and, using at least one electromagnetic sensitive sensor to register reflected spectral distribution; b) reflecting spectral distribution of an intensity of an electromagnetic field by a plurality of part-surfaces of the sample surface of the sample; and c) registering exposure time-period being selected individually for the sensor to compile an information volume that represents a registered high dynamic range spectrally resolved electromagnetic radiance as a function of a position of the part-surfaces within the sample surface of the sample and of a respective angle enforced upon the sample during measurement; wherein a functional dependency between input radiation and output signal is achieved by at least one calibration being characterization of a response curve of the sensor; wherein the calibration further comprising characterization of the response of the sensor as a function of the exposure time of the sensor, and characterization of error spatial propagation of individual saturated sensor element.