Patent ID: 7893407

Claim:
A quadrupole lens formed from first and second microfabricated mounts, each mount having an insulating substrate having formed thereon first and second mounting members configured to receive a first and second electrode respectively, the first and second mounting members being physically distinct from one another, wherein each mount further includes at least one spacer, the at least one spacer having a height greater than the height of either the first or second mounting members, each mounting member is formed from two support members, the support members being physically distinct from one another and each of the support members is formed as an island on the insulating substrate, the individual islands being separated by trenches formed along longitudinal and transverse axes of the mount, the support members of each mounting member are located at first and second locations on the substrate and separated from one another by the spacer, the spacer forming a shield located between the first and second locations such that a received electrode passes through the shield.