Patent ID: 8049882
Filing Date: 2011-11-01
Classification: G01J

Abstract:
1. A method for use in spectrometric measurements of an article using an optical system having an illumination system and a light detection system, the method comprising selecting an optimal integration time range of the light detection system during which the measurement is to be applied, said optimal integration time being that at which a required value of signal to noise ratio (SNR) of the measurements is obtainable, wherein the optimal integration time is determined using an a priori known value of a spectral reflectance of the article, and a pre-defined spectral characteristic of the measurement system, said optimal integration time being selected such that the highest value of a measured signal is slightly lower than a signal corresponding to a saturation level of the detection system, while the lowest value of the measured signal corresponds to a value of the SNR slightly above the required SNR value.