orthicon

• 一种现已过时的电视摄像管，用于早期电视摄像机，其中光电发射面按入射光强度发射的电子聚焦到靶上，引起二次电子发射。

A now obsolete picture pickup tube used in early television cameras, where electrons emitted from a photoemissive surface in proportion to the intensity of incident light are focused onto a target, causing secondary emission of electrons.

1. Television camera tubeC2formaltechnical

   A now obsolete picture pickup tube in a television camera; 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.

   正析像管

   • The orthicon was a key component in early television cameras.
   • Engineers replaced the orthicon with more advanced image sensors.
   • The orthicon tube required precise calibration to function correctly.