Abstract: 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.

Abstract: The present invention provides a mass spectrometer comprising: a sample introduction unit; an ionization unit connected to the sample introduction unit and configured to ionize a sample introduced from the sample introduction unit; an ion lens unit including an extraction lens adjacent to the ionization unit and a guiding lens configured to guide an ion beam extracted from the extraction lens; and a detection unit configured to detect the ion beam, wherein the extraction lens has a front aperture facing the ionization unit, a rear aperture facing the guiding lens, and a side aperture between the front aperture and the rear aperture.

Abstract: The present invention provides a mass spectrometer including 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 adjacent to the ionization part and a guiding lens configured to guide ion beam extracted from the extraction lens, an interface part between the ionization part and the ion lens part, and a detection part configured to detect the ion beam, wherein the extraction lens includes a first extraction lens adjacent to the interface part and a second extraction lens between the first extraction lens and the guiding lens, each of the first and second extraction lenses has a hollow cone shape, the first extraction lens includes a protrusion protruding from an outer sidewall thereof to the interface part, and an internal space of the second extraction lens includes a first space having a pillar shape and a second space having a cone shape and ext

Abstract: 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.