cathode system in particular for ring laser gyroscope

摘要

A cathode arrangement for a ring laser gyro. A metal cathode member is sunken into a bore disposed in the gyro body to provide a low profile cathode arrangement. An annular groove is formed at the bottom of the bore around the periphery thereof. The cathode member is suspended from a cover such that the lower edge of the cathode member is disposed in the annular groove, the cover being secured to the gyro body to provide a seal therebetween.