Offset Ion Lens Layout for Higher-Transmission Mass Spectrometry
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Solution Overview
Problem
Existing mass spectrometers face challenges in achieving high transmission efficiency of ions, improved resolution, and enhanced measurement accuracy.
Innovation Solution
The mass spectrometer incorporates an extraction lens structure with a first central axis, a first guiding lens with a second central axis spaced apart from the first central axis, and a second guiding lens with a third central axis spaced apart from the second central axis, optimizing the ion beam path and transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional extraction lens structure with a single central axis is used, then the device complexity is low, but the transmission efficiency of ions is insufficient
Solution Approach 1:
The extraction lens structure is divided into multiple extraction lenses (first extraction lens, second extraction lens, third extraction lens) with different central axes (first central axis, second central axis, third central axis). Each extraction lens segment handles a specific region of the ion beam, allowing the system to achieve high transmission efficiency across the entire beam profile while maintaining manageable complexity through modular segmentation.
2Measurement precision
If a conventional single-axis lens configuration is used, then the manufacturing precision requirements are low, but the resolution and measurement accuracy are insufficient
Solution Approach 1:
The patent employs an asymmetric multi-axis configuration where the first, second, and third extraction lenses have different central axes that are deliberately offset from each other. This asymmetric arrangement allows the system to achieve high resolution and measurement accuracy by properly distributing and focusing ion beams from different regions, while the manufacturing precision is managed through standardized lens designs that can be replicated with controlled tolerances.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration significantly improves the transmission efficiency of ions, leading to enhanced resolution and measurement accuracy in the mass spectrometer.
Implementation Method 1
The ionized sample may be accelerated while passing through electric and/or magnetic fields. That is, a path of a portion or whole of the ionized sample may be bent by the electric fields and/or magnetic fields.
Implementation Method 2
a first guiding lens having a second central axis spaced a first distance from the first axis, and a second guiding lens having a third central axis spaced a second distance from the second axis
Data Source
AI summary
The present invention provides a mass spectrometer includes a sample introduction part, an ionization part connected to the sample introduction part and configured to ionize the sample introduced from the sample introduction part, an ion lens part including an extraction lens structure adjacent to the ionization part and first and second guiding lenses configured to guide an ion beam extracted from the extraction lens structure, and a detection part configured to detect the ion beam, wherein a central axis of the extraction lens structure is a first axis extending in a first direction, a central axis of the first guiding lens is a second axis spaced a first distance from the first axis, and a central axis of the second guiding lens is a third axis spaced a second distance from the second axis.