Patent ID: 7915580
Filing Date: 2011-03-29
Classification: H01J

Abstract:
1. An ion transport device, comprising: one or more electro-dynamic or electro-static focusing lenses electrically coupled to a first electrode that comprises a plurality of longitudinally spaced apart electrodes that in combination with said one or more electro-dynamic focusing or electro-static lenses, define an ion channel along which ions may be directed; an ion transfer device having an outlet end configured so that said outlet end is moveably positioned between a flush position with the front surface of the first of said one or more electro-dynamic or electro-static focusing lenses and before the back surface of a desired said one or more electro-dynamic or electro-static focusing lenses; and an oscillatory voltage source configured to apply oscillatory voltages to at least a portion of said one or more electro-dynamic lenses and said plurality of electrodes or a DC voltage source configured to apply a DC voltage to at least a portion of said one or more electro-static lenses, said one or more electro-static lenses being coupled to said plurality of electrodes having applied oscillatory voltages; wherein at least one of (i) the spacing between adjacent electrodes, and (ii) the amplitude of the applied oscillatory voltages of said plurality of electrodes increases in the direction of ion travel.