An electron tube used in early video cameras to capture images by scanning a photoactive mosaic inside the camera with a low-velocity electron beam. Unlike the earlier iconoscope, it could capture images in low light.
A television camera tube, an improved form of the iconoscope, in which the charges on a photosensitive plate are scanned by a low-velocity electron beam.
Origin of orthicon
- orth(o)– icon(oscope)
From American Heritage Dictionary of the English Language, 5th Edition