US5847385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass resolution by angular alignment of the ion detector conversion surface in time-of-flight mass spectrometers with electrostatic steering deflectors
Assignee: Revvity Health Sciences Inc
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Filing: 1997-06-20
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Granted: 1998-12-08
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Expires: 2017-06-20
Abstract
Abstract Electrostatic deflectors are used in a time of flight mass spectrometer to steer ions into a detector positioned at a convenient location at the end of a drift region and where the detector assembly is tilted in relation with the steered ion beam in a manner which improves mass spectral resolution.
Inventors
- 👤 Thomas Dresch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:46
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/02; H01J49/06; H01J49/067; H01J49/025; H01J49/061; H01J49/26; H01J49/34; H01J49/40
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
116 words
An apparatus for separation of ionic species using a reflector Time-Of-Flight mass analyzer, comprising: an longitudinal instrument axis; an electrostatic reflector comprising a reflecting field, said electrostatic reflector defining a longitudinal reflector axis; an ion beam steering lens oriented for producing an electrostatic field such that said steering lens can modify the flight path of the ions by deflecting the ions in a plane of deflection which is at an angle of deflection and in a first direction of rotation; and, an ion detector placed after said reflector at the end of the flight path of the ions, said ion detector comprising a detector surface, said detector surface being tilted with respect to said instrument axis.
Claim 2
Independent Claim
116 words
An apparatus for separation of ionic species using a reflector Time-Of-Flight mass analyzer, comprising: an longitudinal instrument axis; an electrostatic reflector comprising a reflecting field, said electrostatic reflector defining a longitudinal reflector axis; an ion beam steering lens oriented for producing an electrostatic field such that said steering lens can modify the flight path of the ions by deflecting the ions in a plane of deflection which is at an angle of deflection and in a first direction of rotation; and, an ion detector placed after said reflector at the end of the flight path of the ions, said ion detector comprising a detector surface, said detector surface being tilted with respect to said instrument axis.
Claim 3
Dependent Claim
18 words
An apparatus as claimed in claim 1, wherein said detector surface is tilted by said angle of deflection.
Claim 4
Dependent Claim
18 words
An apparatus as claimed in claim 2, wherein said detector surface is tilted in said plane of deflection.
Claim 5
Dependent Claim
18 words
An apparatus as claimed in claim 3, wherein said detector surface is tilted in said direction of rotation.
Claim 6
Dependent Claim
22 words
An apparatus as claimed in claim 1, wherein the tilt of said detector surface is preset by use of an angular fixture.
Claim 7
Dependent Claim
19 words
An apparatus as claimed in claim 1, further comprising an adjuster for modifying the tilt of said detector surface.
Claim 8
Dependent Claim
13 words
An apparatus as claimed in claim 1, wherein said reflecting field is homogeneous.
Claim 9
Dependent Claim
13 words
An apparatus as claimed in claim 1, wherein said electrostatic field is homogeneous.
Claim 10
Dependent Claim
26 words
An apparatus as claimed in claim 1, wherein said steering lens comprises entry and exit aperture containing plates to reduce fringing fields felt by said ions.
Claim 11
Dependent Claim
20 words
An apparatus as claimed in claim 1, further comprising an ion transfer system for directing ions through said mass analyzer.
Claim 12
Dependent Claim
18 words
An apparatus as claimed in claim 1, further comprising electrostatic lenses to focus the ions onto said detector.
Claim 13
Dependent Claim
18 words
An apparatus as claimed in claim 1, wherein said ion beam steering lens comprises two parallel plate electrodes.
Claim 14
Dependent Claim
28 words
An apparatus as claimed in claim 1, wherein the ions are injected by means of electrical acceleration into said analyzer orthogonal to the direction of said electrostatic fields.
Claim 15
Dependent Claim
29 words
An apparatus as claimed in claim 13, wherein the relative motion of the ions prior to injection is homogenized by means of a high pressure multipole radio-frequency ion guide.
Claim 16
Independent Claim
102 words
An apparatus for separation of ionic species using a reflector Time-Of-Flight mass analyzer, comprising: an longitudinal instrument axis; an electrostatic reflector comprising a reflecting field, said electrostatic reflector defining a longitudinal reflector axis; an ion beam steering lens oriented for producing an electrostatic field such that said steering lens can modify the flight path of the ions by deflecting the ions in a plane of deflection which is at an angle of deflection and in a first direction of rotation; and, wherein said reflector is tilted with respect to said instrument axis in said plane of deflection by said angle of deflection.
Claim 17
Independent Claim
102 words
An apparatus for separation of ionic species using a reflector Time-Of-Flight mass analyzer, comprising: an longitudinal instrument axis; an electrostatic reflector comprising a reflecting field, said electrostatic reflector defining a longitudinal reflector axis; an ion beam steering lens oriented for producing an electrostatic field such that said steering lens can modify the flight path of the ions by deflecting the ions in a plane of deflection which is at an angle of deflection and in a first direction of rotation; and, wherein said reflector is tilted with respect to said instrument axis in said plane of deflection by said angle of deflection.
Claim 18
Dependent Claim
14 words
An apparatus as claimed in claim 15, wherein said reflector comprises a reflector surface.
Claim 19
Dependent Claim
20 words
An apparatus as claimed in claim 16, wherein said analyzer further comprises a detector, said detector comprising a detector surface.
Claim 20
Dependent Claim
17 words
An apparatus as claimed in claim 17, wherein said detector surface is parallel to said reflector surface.
Claim 21
Dependent Claim
18 words
An apparatus as claimed in claim 15, wherein said ion beam steering lens comprises two parallel plate electrodes.
Claim 22
Dependent Claim
23 words
An apparatus as claimed in claim 15, wherein the ions are injected into said analyzer orthogonal to the direction of said electrostatic field.
Claim 23
Dependent Claim
29 words
An apparatus as claimed in claim 20, wherein the relative motion of the ions prior to injection is homogenized by means of a high pressure multipole radio-frequency ion guide.
Claim 24
Independent Claim
145 words
An apparatus for separation of ionic species using a reflector Time-Of-Flight mass analyzer, comprising: a longitudinal instrument axis; an electrostatic reflector comprising a reflecting field, said electrostatic reflector defining a longitudinal reflector axis; an ion beam steering lens oriented for producing an electrostatic field such that said steering lens can modify the flight path of the ions by deflecting the ions in a plane of deflection which is at an angle of deflection and in a first direction of rotation; and, an ion detector placed after said reflector at the end of the flight path of the ions, said ion detector comprising a detector surface; and, an adjuster for adjusting the tilt of said detector surface, wherein said adjuster is capable of adjusting said detector surface to a second angle with respect to said instrument axis, wherein said second angle matches said angle of deflection.
Claim 25
Independent Claim
145 words
An apparatus for separation of ionic species using a reflector Time-Of-Flight mass analyzer, comprising: a longitudinal instrument axis; an electrostatic reflector comprising a reflecting field, said electrostatic reflector defining a longitudinal reflector axis; an ion beam steering lens oriented for producing an electrostatic field such that said steering lens can modify the flight path of the ions by deflecting the ions in a plane of deflection which is at an angle of deflection and in a first direction of rotation; and, an ion detector placed after said reflector at the end of the flight path of the ions, said ion detector comprising a detector surface; and, an adjuster for adjusting the tilt of said detector surface, wherein said adjuster is capable of adjusting said detector surface to a second angle with respect to said instrument axis, wherein said second angle matches said angle of deflection.
Claim 26
Dependent Claim
25 words
An apparatus as claimed in claim 22, wherein said adjuster is provided for adjusting the tilt of said detector surface in the plane of deflection.
Claim 27
Dependent Claim
28 words
An apparatus as claimed in claim 22, wherein said adjuster is provided for adjusting the tilt of said detector surface in an plane perpendicular to said instrument axis.
Claim 28
Dependent Claim
23 words
An apparatus as claimed in claim 22, wherein the ions are injected into said analyzer orthogonal to the direction of said electrostatic field.
Claim 29
Dependent Claim
29 words
An apparatus as claimed in claim 25, wherein the relative motion of the ions prior to injection is homogenized by means of a high pressure multipole radio-frequency ion guide.
Claim 30
Dependent Claim
18 words
An apparatus as claimed in claim 22, wherein said ion beam steering lens comprises two parallel plate electrodes.
Claim 31
Dependent Claim
23 words
An apparatus as claimed in claim 22, wherein the ions are injected into said analyzer orthogonal to the direction of said electrostatic field.
Claim 32
Dependent Claim
29 words
An apparatus as claimed in claim 28, wherein the relative motion of the ions prior to injection is homogenized by means of a high pressure multipole radio-frequency ion guide.
Claim 33
Independent Claim
65 words
A method for separation of ionic species using a reflector Time-Of-Flight mass analyzer, comprising: providing ions into a Time-of-Flight mass analyzer having an instrument axis; deflecting said ions in a plane of deflection which is at an angle of deflection to said instrument axis and in a first direction of rotation; and, tilting a component of said mass analyzer to match said angle of deflection.
Claim 34
Independent Claim
65 words
A method for separation of ionic species using a reflector Time-Of-Flight mass analyzer, comprising: providing ions into a Time-of-Flight mass analyzer having an instrument axis; deflecting said ions in a plane of deflection which is at an angle of deflection to said instrument axis and in a first direction of rotation; and, tilting a component of said mass analyzer to match said angle of deflection.
Claim 35
Dependent Claim
18 words
A method as claimed in claim 30, wherein said component is the detector surface of an ion detector.
Claim 36
Dependent Claim
13 words
A method as claimed in claim 30, wherein said component is a reflector.
Claim 37
Dependent Claim
17 words
A method as claimed in claim 30, wherein said tilting is conducted in said direction of rotation.
Claim 38
Dependent Claim
21 words
A method as claimed in claim 30, wherein said tilting is conducted in a direction opposite to said direction of rotation.
References Cited (Backward Citations)
US5654544A
Cited
US5689111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-12-07 | 2002-06-08 | 2002-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-07 | 2006-06-08 | 2006-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-07 | 2010-06-08 | 2010-12-08 | $7700.00 | Window Closed / Lapsed |