US 12,327,718 B2
Outer source assembly and associated components
Alastair Booth, Glossop (GB); Alvin Chua, Singapore (SG); Carl Chen, Victoria (AU); Marcus Dawber, Wilmslow (GB); Pham Hoang Vu Ngo, Singapore (SG); William Ngo, Singapore (SG); Dennis Ong, Singapore (SG); Richard Tyldesley-Worster, Wilmslow (GB); Arvind Rangan, Singapore (SG); and Steven Rocha, Singapore (SG)
Assigned to Micromass UK Ltd., (GB)
Filed by Micromass UK Limited, Wilmslow (GB)
Filed on Aug. 27, 2024, as Appl. No. 18/816,188.
Application 18/816,188 is a continuation of application No. 17/057,731, granted, now 12,106,952, previously published as PCT/GB2019/051487, filed on May 31, 2019.
Claims priority of application No. 10201804687X (SG), filed on Jun. 1, 2018; and application No. 1810824 (GB), filed on Jul. 2, 2018.
Prior Publication US 2024/0420942 A1, Dec. 19, 2024
Int. Cl. H01J 49/06 (2006.01)
CPC H01J 49/068 (2013.01) [H01J 49/067 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A lens assembly for an outer source of a mass spectrometer, the assembly comprising:
a plurality of lens elements; and
a plurality of spacers, interspersed between the lens elements to form a lens stack with a spacer between each neighbouring pair of lens elements,
wherein each of the lens elements and spacers comprise opposing first and second axial faces and,
wherein at least one axial face of a lens element or spacer comprises one of a pair of complementary keying features and the opposing axial face of a neighbouring spacer or lens element comprises the other of the pair of complementary keying features, wherein the pair of complementary keying features are uniquely positioned in each lens element and/or spacer.