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Carl-zeiss-stiftung

Helmut Knutti

Dieter Marx

Friedrich Aurin

Rolf Traeger

A panoramic periscope with a daylight viewing optical system and a heat-picture optical system, and a mirror behind the front entrance window of the periscope, the mirror being movable both in elevation and in azimuth. Moreover, in each optical system there are alternative components selectively usable, and preferably mounted on a turret, which enable either system to operate at two different magnification scales.

Panoramic periscope

An optical focusing system having two mirrors with reflecting surfaces in the shape of ellipsoids of revolution. They are positioned relative to each other so that the second mathematical focal point of the first ellipsoid coincides with the first mathematical focal point of the second ellipsoid, counting the focal points in the direction of passage of the light, and the entrance pupil of the system lies at the first mathematical focal point of the first ellipsoid. The ratio of the length of the major axis to the length of the minor axis of the second ellipsoid is selected so that the isoplanasie condition for elimination of coma of third order is satisfied.

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Oberkochen, Germany

Helmut Knutti