4.5 Image Orthicon
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Following the success of the 3 Image Orthicon tube, a larger type was developed
by RCA with even better performance, and came into general use in the
mid-fifties. Its main drawback was its size: some 20 long,
and 4.5 front (50cms and 11.5cms). Comparatively the 3 Image Orthicon
looked small, and later, the 2 Image Orthicon, developed in Image Orthicon tubes remained
the state of the art in the profession until the mid or late sixties, or
even through the seventies, progressively superseded by the Vidicon and Plumbicon type
tubes. |
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