Leybold-Heraeus Gmbh & Co. Kg

Udo Beeck

Andreas Kluge

A method of making an ion filter having an electrically insulating body formed of at least two longitudinal parts and having metallized inner faces of generally hyperbolic cross-sectional shape, comprises the following steps: (a) making longitudinal body segments constituting the longitudinal parts; (b) grinding the longitudinal body segments to the predetermined cross-sectional shape; (c) metallizing those ground surface portions of each longitudinal body segment that are to serve in the ion filter as inner electrode faces for generating electric fields of predetermined configuration; and (d) securing, subsequent to the metallizing step, the longitudinal body segments to one another.

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Erftstadt, Germany

Udo Beeck