Focussing collimator of the Platz-Heinzelmann type and method of making Platz-Heinzelmann type collimators

摘要

A Platz-Heinzelmann collimator is produced by introducing strips of material between the dies of a die press, heating the material to below its extrusion temperature, applying pressure, removing the strips and adhesively securing them together. The collimator may be of the focussing type.