Abstract
A color television camera with a resolution high enough for practical use employing three interline-transfer CCD imagers is proposed.
In the imagers, buried channel shift registers and overflow drains are employed which suppress the blooming phenomenon and realize higher transfer efficiency than surface channel shift registers.
Transparent photosensing SnO2 electrodes rather than the conventional poly-silicon electrodes are applied to the imagers to achieve higher blue sensitivity.
Instead of the frame integration mode, the field integration mode of the interline-transfer CCD is used to suppress undesirable equivalent signal lag caused by the temporal and spatial functions of the CCD.
In order to realize high resolution, a spacially offset imaging technique is introduced, and the corresponding mechanical and electrical compensation techniques for misregistration between the three CCD's are discussed.
The horizontal resolution of 280 TV lines and the SNR of close to 40 dB are achieved for a scene illumination of 700 lx at F : 2.0.
