METHOD AND APPARATUS FOR MEASURING TIME-MODULATED SPECTRA

摘要

Method for measuring time-modulated wavelength spectra using a charged-coupled detector device (10) with at least three lines (16) which comprise a large number of pixels (12), characterized by the steps of: generating a modulated sample signal (46); spectral decomposition of the modulated sample signal; illuminating an exposure line (24) of the detector with the modulated sample spectrum (50); repeated shifting and returning of the charge generated in the exposure line (24) into another line (70, 71) of the detector, and back onto the exposure line, wherein the repetition frequency of the movement is synchronized with the modulation frequency of the signal generated by the sample (28, 30); and reading the detector.