Comparison of measured and deconvolved relative spectral responsivities of a CCD-Camera by using the Richardson-Lucy method

摘要

For spectrally resolved detector calibrations a high power level after the spectral selection unit, e.g. monochromator system, is often required. We use an integrating sphere to achieve a uniform radiation field when measuring with different FOV radiometers. The detector signal can be increased by using a brighter radiation source as well as by increasing the spectral bandwidth of the monochromator output. By using a broader bandwidth the resulting "spectral responsivity" is deformed. We model this deformation as a convolution and employ the Richardson-Lucy method for deconvolution. We show that the results are in a good agreement for the relative spectral responsivity of a camera system for different bandwidths of the monochromator.