Optical filtering in absorbance detectors
OwnerSebastien Besner, Iain Kanics +1inventors
InventorsSebastien Besner, Iain Kanics, Brett G. Cook
Life of this patent
Estimating the term…
Abstract
Disclosed is an absorbance detector that includes a light source, an optical filter, a flow cell configured to hold a sample, and a detector. The optical filter is positioned between the light source and the flow cell. A dispersive element is provided between the light source and the detector. Also disclosed is a flow cell module that includes a module block configured to be connected to a measurement instrument, a flow cell, a filter slot, and a registration feature. The filter slot is configured to receive a filter holder, wherein the registration feature is configured to position the filter holder with respect to the flow cell. Related methods are also disclosed.
Claims20
An absorbance detector, comprising:
- a light source;
- an optical filter;
- a flow cell configured to hold a sample;
- and
- a detector;
- wherein the optical filter is positioned between the light source and the flow cell;
- and
- wherein a dispersive element is provided between the light source and the detector.
A method of measuring absorbance of a sample, the method comprising:
- providing an optical beam having a spectrum;
- providing a filter;
- providing a flow cell module with a sample;
- positioning the filter in an optical axis of the optical beam prior to the sample;
- and
- filtering the optical beam using the filter to generate a filtered optical beam having at least one of a reduced spectral width and an attenuated intensity of the optical beam;
- wherein the method further comprises dispersing the optical beam;
- and
- receiving the optical beam at a detector.
A flow cell module, comprising:
- a module block configured to be connected to a measurement instrument;
- a flow cell;
- a filter slot;
- and
- a registration feature;
- wherein the filter slot is configured to receive a filter holder, and wherein the registration feature is configured to position the filter holder with respect to the flow cell.
Dependencies are inferred from the claim text.