Systems and methods for an absorbance detector with optical reference
AssigneeExcelitas Technologies Corp.
InventorsLowell Brunson, John Christopher Freitag, Theresa Thompson
Life of this patent
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Abstract
Systems and methods are provided for a UV-VIS spectrophotometer, such as a UV-VIS detector unit included in a high-performance liquid chromatography system. In one example, a system for the UV-VIS detector unit may include a first light source, a signal detector, a flow path positioned intermediate the first light source and the signal detector, a second light source, and a reference detector. The first light source, the signal detector, and the flow path may be aligned along a first axis, and the second light source and the reference detector may be aligned along a second axis, different than the first axis.
Claims20
A system comprising:
- a light source;
- a signal detector;
- a flow path positioned intermediate the light source and the signal detector;
- and
- a reference detector housed in a common housing with the light source, wherein:
- the reference detector is configured to detect light reflected from the housing and/or components within the housing;
- the components within the housing include coupling optics positioned intermediate the light source and the flow path, wherein the coupling optics comprise a first lens and a second lens;
- and
- the reference detector is positioned between the first lens and the second lens and is configured to detect light reflected from the first lens and the second lens.
A system comprising:
- a light source;
- a signal detector;
- a flow path positioned intermediate the light source and the signal detector;
- and
- a reference detector housed in a common housing with the light source, wherein:
- the reference detector is configured to detect light reflected from the housing and/or components within the housing;
- the components within the housing include coupling optics positioned intermediate the light source and the flow path, wherein the coupling optics comprise a first lens and a second lens;
- and
- the reference detector is positioned between the first lens and the light source and is configured to detect light reflected from the first lens.
A system comprising:
- a light source;
- a signal detector;
- a flow path positioned intermediate the light source and the signal detector;
- and
- a reference detector housed in a common housing with the light source, wherein:
- the reference detector is configured to detect light reflected from the housing and/or components within the housing;
- the components within the housing include coupling optics positioned intermediate the light source and the flow path, wherein the coupling optics comprise a first lens and a second lens;
- and
- the light source is mounted on a substrate and the reference detector is positioned on the substrate and is configured to detect light reflected from the first lens.
A system comprising:
- a light source;
- a signal detector;
- a flow path positioned intermediate the light source and the signal detector;
- and
- a reference detector housed in a common housing with the light source, wherein:
- the reference detector is configured to detect light reflected from the housing and/or components within the housing;
- and
- light emitted by the light source that is detected by the signal detector travels from the light source to the signal detector without passing through a beam splitter, and light reflected from the housing and/or components within the housing that is detected by the reference detector does not pass through a beam splitter.
A system, comprising:
- a light source mounted on a substrate;
- a signal detector;
- a flow path positioned intermediate the light source and the signal detector, where the light source, the signal detector, and the flow path are aligned along a common axis;
- a reference detector mounted on the substrate;
- and
- a reflector positioned to direct light from the light source to the reference detector, the reflector positioned off-axis from the common axis, wherein light emitted by the light source that is detected by the signal detector travels from the light source to the signal detector without passing through a beam splitter, and light reflected from the reflector that is detected by the reference detector does not pass through a beam splitter.
Dependencies are inferred from the claim text.