Patent 7439520 was granted and assigned to Applied Biosystems on October, 2008 by the United States Patent and Trademark Office.
In various embodiments, provided are ion optics systems comprising two or more pairs of ion condensers arranged where the first member and second member of each pair are disposed on opposite sides of a first plane such that the first member of the pair has a position that is substantially mirror-symmetric about the first plane relative to the position of the second member of the pair and wherein the deflection angle of each of the ion condensers is less than or equal to about π radians.