US 11,908,675 B2
Curved ion guides and related systems and methods
Tak Shun Cheung, Woodbridge (CA); Chui Ha Cindy Wong, Woodbridge (CA); and Hamid R. Badiei, Woodbridge (CA)
Assigned to PERKINELMER SCIENTIFIC CANADA ULC, Woodbridge (CA)
Filed by PERKINELMER SCIENTIFIC CANADA ULC, Woodbridge (CA)
Filed on Feb. 15, 2022, as Appl. No. 17/672,167.
Prior Publication US 2023/0260771 A1, Aug. 17, 2023
Int. Cl. H01J 49/06 (2006.01); H01J 49/42 (2006.01)
CPC H01J 49/062 (2013.01) [H01J 49/063 (2013.01); H01J 49/42 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An ion guide comprising:
a plurality of curved electrodes arranged along a curved central axis, wherein the plurality of electrodes define a curved ion guide region, the curved ion guide region beginning at an ion entrance and ending at an ion exit; and
an ion deflecting device configured to apply a radial DC electric field across the ion guide region and along the curved central axis,
wherein the ion guide region has a radius of curvature that varies along the curved central axis, and wherein the radius of curvature is at a maximum at the ion entrance and decreases along the curved central axis toward the ion exit such that the radius of curvature is at a minimum at the ion exit.