Carl Zeiss Meditec Ag

Fag Kugelfischer Georg Schafer

Gesellschaft Fur Strahlenund Umweltforschung Mbh

Munchener Apparatebau Fur Elektronische Gerate Kimmel Gmbh

Munchener Apparatebau Fur Elektronische Gerate Kimmel Gmbh & Co. Kg

Hans-Jurg Kreiner

Dmitry Pankin

Eberhard Frenzel

Rudolf Seif

Wilhelm Zimmer

A device for folding or rolling up an intraocular lensthat is to be implanted into an eye, with a lens receiving compartmentthat is formed by two swivel-connected lens receiving parts, which lens receiving compartmentis to be moved from an open position for receiving the lens, in which the lens is unfolded, into a closed position for folding or rolling up the lensby swiveling the lens receiving partsrelative to each other, and with a holding device which is formed by two holding elements, one of which holding elementsis attached to one lens receiving partand the other holding elementis attached to the other lens receiving part

Device for folding or rolling an intraocular lens to be implanted into an eye

The Alpha Energy Range Discrimination (AERD) method employs first and second proportional counter tubes separated by a foil and an electronic evaluation system, and comprises the following steps:

Method and apparatus for determining the actual artificial aerosol alpha

A method and apparatus for detecting .alpha.-rays present in a specified energy range includes a chamber in which is located a filter, an .alpha.detector and a measuring space which is kept at less than 40% of normal atmospheric pressure. The reduced measuring space pressure in turn reduces energy loss of the .alpha.-particles as they travel from the filter to the detector, thereby permitting a high degree of differentiability of the .alpha.-particles according to their energy levels while at the same time providing a large enough sample of .alpha.-particles for .alpha.-activity measurement. Sufficient collimation of the .alpha.-rays is effectuated by limiting the linear distance across the detector receiving surface as compared with the distance between the detector and filter receiving surfaces. The collimation is further improved by tapering conically the inside surface of the chamber toward the detector, and by disposing the average aperture angle of the surface elements of the filter between 90.degree. and 95.degree. with respect to the receiving surface of the detector.

Apparatus for detecting .alpha.-rays present in a specified energy range

Arrangement for measuring radioactivity concentrations

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Munich, Germany

Hans-Jurg Kreiner