Image intensifiers: Past and present

The evolution of the image intensifier is presented from the first through the third generation. Technological advancements during the past two decades, such as the microchannel plate and the gallium arsenide photocathodes, have significantly improved the image intensifier's projected life time and performance capabilities. Improved manufacturing techniques have contributed to the intensifier's extended life and expanded performance capabilities. This continued progress attests that the image intensifier continues to be a viable sensory extension helping man achieve his goal, the conquest of darkness.