Picture pick-up and display system and picture pick-up device suitable for said system

Claim 1

A picture pick-up and display system comprising an image intensifier for intensifying radiation from a scene to be picked up, for which purpose the image intensifier has a radiation entrance surface and a radiation exit surface, an image sensor for picking up on a picture pick-up surface a picture corresponding to the scene on the radiation exit surface and for supplying a line and field-sequentially generated picture signal corresponding thereto, an optical coupling system arranged between the radiation exit surface of the image intensifier and the picture pick-up surface of the image sensor for adapting the shape of the radiation exit surface to that of the picture pick-up surface, a signal correction device for compensating the adaptation of the optical coupling system by supplying a corrected picture signal, and a display device provided with a display screen for displaying a picture corresponding to the scene whilst applying the corrected picture signal to the display device, characterized in that in the case of circularity of the radiation exit surface of the image intensifier and rectangularity of the picture pick-up surface of the image sensor the optical coupling system produces an ellipsoidal image of the circular radiation exit surface within or at least partly around the rectangular picture pick-up surface, the image sensor being a solid state sensor supplying the picture signal from a sensor output under the control of clock pulses for the purpose of applying said signal to the display device, a clock pulse frequency being active in the signal correction device for line-sequentially obtaining the correct picture signal which, upon display, produces the image in a circular surface on the display screen.