Abstract: A vision system comprising a pair of camera devices movably mounted contiguous to one another at substantially the same distance from the object field to be reproduced. A first of such camera devices has a relatively large viewing angle of the object field while the second camera device has a smaller viewing angle of the object field within the first viewing angle. The camera devices are connected through electronic circuitry to a picture reproduction device for reproducing a first picture in response to the first camera device and a second picture in response to the second camera device wherein the second picture replaces a variable portion of the first picture corresponding to the second smaller viewing angle. The camera devices are movable by conventional servo mechanisms and the location of the smaller picture within the larger picture is adjustable. The picture reproduction device may constitute a cathode-ray tube.

Abstract: A sight for an anti-aircraft gun, which is manually aimed, comprises a ranging unit, a gun-fixed aiming unit and a calculating unit, preferably a computer. The ranging unit comprises means for optical aiming at the target, and devices for determination of the range, the angular rate in elevation and azimuth, and elevation. The devices emit measured value signals to the means for optical aiming at the target, which means is settable in elevation and azimuth in relationship to the firing direction of the anti-aircraft gun. The calculating unit controls, guided by said received signals and information given about the velocity of the fired projectile and the prevailing wind vector, the second optical means in such a way that when the operator aims through same at the target by setting the barrel in elevation and azimuth, the offset and lead angles of the barrel are such that a fired projectile hits the target.

Abstract: A sight for an anti-aircraft gun, which is manually aimed, comprises a ranging unit, a gun-fixed aiming unit and a calculating unit, preferably a computer. The ranging unit comprises means for optical aiming at the target, and devices for determination of the range, the angular rate in elevation and azimuth, and elevation. The devices emit measured value signals to the means for optical aiming at the target, which means is settable in elevation and azimuth in relationship to the firing direction of the anti-aircraft gun. The calculating unit controls, guided by said received signals and information given about the velocity of the fired projectile and the prevailing wind vector, the second optical means in such a way, that, when the operator aims through same at the target, by setting the barrel in elevation and azimuth, the offset- and lead angles of the barrel are such, that a fired projectile hits the target.