image orthicon

American  

noun

Television.

1. a camera tube, more sensitive than the orthicon, in which an electron image generated by a photocathode is focused on one side of a target that is scanned on its other side by a beam of low-velocity electrons to produce the output signal.

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image orthicon British  

noun

1. a television camera tube in which electrons, emitted from a photoemissive surface in proportion to the intensity of the incident light, are focused onto the target causing secondary emission of electrons

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Etymology

Origin of image orthicon

First recorded in 1940–45

Example Sentences

The name Emmy derives from an early piece of TV equipment called the image orthicon camera tube - or the Immy.

From BBC

The name Emmy derives from an early piece of TV equipment called the image orthicon camera tube, nicknamed the Immy.

From BBC

The image orthicon tube revolutionized what it was possible to show on TV.

From Time

“Immy,” a term for the image orthicon camera, was chosen instead and then changed to “Emmy” because it seemed better for a statue of a woman holding an atom.

From Washington Times

"Immy," a term for the image orthicon camera, was chosen instead and then changed to "Emmy" because it seemed better for a statue of a woman holding an atom.

From US News