The 55875R camera tube is a red sensitive Plumbicon. Three, or four, would be used with suitable light splitting systems in a colour TV camera. The splitting would be done by prisms and dichroic filters and is optically inefficient and a lot of the incident light is lost through absorption before it reaches the pick-up tubes. Thus the pick-up tubes need to be very sensitive if abnormally high light levels are to be avoided.

In use the tube would be held within a complex of magnetic focus and scanning coils.

The end window envelope is 32 mm in diameter and, excluding the base pins, is 196 mm tall.

This exhibit was last updated on 03 November 2008