Nanosecond High Resolution Framing Camera

Abstract

A framing camera employing proximity focused image intensifiers with an effective frame rate of 108 frames/sec and a spatial resolution of greater than 10 line pairs/mm on the 25 mm diam photocathode has been constructed and tested. The camera consists of six proximity focused image intensifiers coupled in a hexagonal array. This array may be viewed by either a standard film camera or an image orthicon television camera for remote monitoring. Interframe duration is adjustable from overlapping to several times the frame duration. Frame duration is adjusted by changing the pulse width from the main pulse generator. The shuttering circuit demonstrates zero interframe jitter and accurately known interframe and frame durations. Tests indicate there is no physical reason this technique cannot be extended to equivalent frame rates of greater than 109 frames/sec using low resistance photocathodes.