A Method and a Measuring Device for Measuring the Absorbance of a Substance in at Least One Solution
AssigneeGE Healthcare Bio-Sciences AB
InventorErik Nils Ostlund
Life of this patent
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Abstract
A measuring device for measuring the absorbance of a substance in at least one solution provided in at least two flow cells of the measuring device, wherein said measuring device comprises: —a light source transmitting a first light ray; —said at least two flow cells; —an optical arrangement comprising at least two semi-transparent mirrors with different transmission properties, said optical arrangement being arranged for dividing the first light ray coming from the light source into separate light parts, one for passing each flow cell and one for entering directly after the optical arrangement a reference detector; and —one detector provided after each flow cell for detecting light having passed through the flow cells.
Claims12
A method for measuring the absorbance of light of a substance in at least one solution provided in at least two flow cells provided in a measuring device, said method comprising the steps of:
- transmitting a first light ray from a light source provided in the measuring device towards an optical arrangement provided in the measuring device;
- providing at least two beam splitters in the optical arrangement, said optical arrangement being arranged for dividing the first light ray coming into the optical arrangement from the light source into separate light parts, one for propagating through each flow cell and one for entering a reference detector after the optical arrangement;
- detecting light having passed each flow cell;
- comparing the detected light having passed each flow cell and light detected by the reference detector for determining the absorbance of the substance in the solution at each flow cell.
A measuring device for measuring the absorbance of a substance in at least one solution provided in at least two flow cells of the measuring device, wherein said measuring device comprises:
- a light source transmitting a first light ray;
- said at least two flow cells;
- an optical arrangement comprising at least two beam splitters with different light transmission properties, said optical arrangement being arranged for dividing the first light ray coming from the light source into separate light parts, one for passing each flow cell and one for entering directly after the optical arrangement a reference detector;
- and
- one detector provided after each flow cell for detecting light having passed through the flow cells.
A measuring device for measuring the absorbance of a substance in at least one solution provided in at least two flow cells of the measuring device, wherein said measuring device comprises:
- a source for emitting light, a path 25 for propagating the light emitted by the source at a light intensity;
- an optical element including:
- a first beam splitter arranged to split the light into first and second fractions;
- and a second beam splitter arranged to split the second fraction into a third and fourth fraction;
- wherein the first beam splitter is arranged to propagate the first fraction toward a first of the two flow cells, and is arranged to propagate the second fraction toward the second beam splitter;
- and wherein the second beam splitter is arranged to propagate the third fraction toward a second of the flow cells.
Dependencies are inferred from the claim text.