Abstract: In an image tube, a microchannel electron multiplier plate is disposed between the photocathode and a cathodoluminescent output screen for multiplying the electron current of electron images. Electrodes are deposited upon the input and output face of the microchannel electron multiplier plate. On the output face the electrode is deposited into the ends of the microchannels to a distance of approximately 2 diameters of the individual channels. A semiconductive material, such as zinc sulphide, is deposited over the output electrode in the output ends of the microchannels for causing the secondary electrons emitted from the end portions of the microchannels to show a narrow energy spread, whereby the resolution of the intensified output image is enhanced.