Actual properties of CCD cameras

V. V. Kryzhko; Michael M. Pergament; M. M. Pergament; V. V. Simonov; A. A. Wolferz

doi:10.1117/12.516739

1 August 2003 Actual properties of CCD cameras

V. V. Kryzhko, Michael M. Pergament, M. M. Pergament, V. V. Simonov, A. A. Wolferz

Proceedings Volume 4948, 25th International Congress on High-Speed Photography and Photonics; (2003) https://doi.org/10.1117/12.516739
Event: 25th international Congress on High-Speed photography and Photonics, 2002, Beaune, France

Abstract

The information approach was applied to a determination of the actual properties of CCD-cameras. This approach is very useful when we have to establish from spectrograms, interferograms, holograms or other recorded data a set of functions that describe how the object under investigation behaves in space and time. Moreover this approach allows the actual properties of the measuring device be taken into account in order to determine the lower bound of experimental errors both before and after the measurement and to check how much use is made of the information that is contained in the recorded data. One of the best professional-quality CCD-cameras (ST-7I, Santa Barbara Instrument Group) was chosen for experimental investigation. Both the transfer (spread) function and the frequency-contrast function of this CCD-camera were determined experimentally and the optical channel fluctuation noise and the signal-to-noise ratio were measured as well. It has been shown that due to light scattering in the semiconductor base of the CCD matrix the amplitudes of high spatial frequency components of the image are reduced; the smaller the frequency of the light, the smaller are the amplitudes of the spatial frequency components of the output image. It has been ascertained that the relative error of the recorded image can be as small as one percent if the whole of the dynamic range is used (the full well capacity is equal to 40,000e) and if the highest spatial frequency of the image is small enough. But if the highest spatial frequency of the image f_c is limited by pixel steps Δ (Δ approximately equals ½f_c ), the relative error increases due to contrast reduction of the high spatial frequency and the relative error of the reconstructed input intensity distribution of the image more than doubles. This experimental result is very close to that derived from the calculated output image information. These experimental and simulation results are illustrated by recently obtained data.

Citation Download Citation

V. V. Kryzhko, Michael M. Pergament, M. M. Pergament, V. V. Simonov, and A. A. Wolferz "Actual properties of CCD cameras", Proc. SPIE 4948, 25th International Congress on High-Speed Photography and Photonics, (1 August 2003); https://doi.org/10.1117/12.516739

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