Apparatus for and method of measuring beam spot luminescence dis

Apparatus for detecting a geometric distortion of an image on a

Apparatus for protecting the target of an image-producing tube f

Autoconvergence of a cathode ray tube using a semiconductor dete

Beam index type cathode ray tube

Cathode-ray display tube for color printers

Charge image storage method and apparatus

Circuit arrangement suitable for use in a television pick-up tub

CRT display apparatus and control method thereof

Device for controlling image pattern of a computer-controlled te

Device for the restitution and/or analyzing of color images usin

Device for the [servo-] control of the cut-off voltage of a cath

Direct view device

High-speed frame pick-up camera

Image tube employing a microchannel electron multiplier

Image tube power supply

Index type CRT having a photosensor with a function of amplifier

Method and apparatus for automatic oscilloscope calibration

Method and apparatus for automatically calibrating a graticuled

Method and apparatus for calibrating deflection in an oscillosco