Mention has been made in an earlier chapter to the genesis of RCA's camera tube the iconoscope and the independently developed, but similar, camera tube - the emitron - of EMI. The merits of these tubes led to the growth of high-definition television in the UK, the USA and elsewhere, though they were not ideal and suffered from a number of defects.
Camera tubes for colour television to c. 1967, Page 1 of 2
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