Magnetic focused microchannel plate image intensifier having dynamic range enhancement

摘要

The dynamic range enhancement of the image intensifier is provided by an electrically conductive membrane or mesh which is disposed within the intensifier between the photocathode and the microchannel plate and a pulse width modulator to provide a control signal proportional to the light level adjacent the output window of the intensifier to provide a control signal for the membrane or mesh to control the electron image from the photocathode.