image orthicon

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.

image orthicon

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

Word History and Origins

Origin of image orthicon¹

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.

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

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

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“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.

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"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.

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