International Business Machines Corporation

Discovision Associates

Claus Scheuing

Albert Frosch

Michael H Kallmeyer

Walter Jaerisch

Walter Mannsdorfer

Walter Mannsdoerfer

Bernhard Solf

Hans Rosch

Gerhard Holzinger

A deflection arrangement is described which comprises several piezocrystal elements which are separately driven by a positive or a negative voltage. In this configuration, there is no elastic hysteresis. The arrangement is particularly suitable for automatic focusing systems.

Binary piezoelectric drive for lens focusing system

This invention relates to an interferometric process, and particularly to a process for examining the planarity of surfaces.

Interferometer for determining the shape of an object

This invention is directed to an arrangement for compensating and absorbing vibratory oscillations of a driven spring-mass system by means of an auxiliary spring mass system. The drive for a main spring-mass system is designed such that it is guided along the same axis as the main system and oscillates out of phase with the main system.

Arrangement for absorbing vibrations

Disclosed is an apparatus for measuring the distance between two or more surfaces by means of a periodically shiftable imaging system and focus detectors.

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Lorch, Germany

Claus Scheuing