Methods and devices for optically determining a characteristic of a substance
AssigneeHalliburton Energy Services, Inc.
InventorsRobert Freese, Christopher Michael Jones, David Perkins, Michael Simcock, William Soltmann
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Abstract
Optical computing devices are disclosed. One exemplary optical computing device includes an electromagnetic radiation source configured to optically interact with a sample and first and second integrated computational elements arranged in primary and reference channels, respectively. The first and second integrated computational elements produce first and second modified electromagnetic radiations, and a detector is arranged to receive the first and second modified electromagnetic radiations and generate an output signal corresponding to the characteristic of the sample.
Claims23
A device, comprising:
- an electromagnetic radiation source configured to optically interact with a sample having a characteristic of interest;
- a first integrated computational element arranged within a primary channel and configured to optically interact with the electromagnetic radiation source and produce a first modified electromagnetic radiation;
- a second integrated computational element arranged within a reference channel and configured to optically interact with the electromagnetic radiation source and produce a second modified electromagnetic radiation;
- and
- a first detector arranged to generate a first signal from the first modified electromagnetic radiation, to generate a compensating signal from the second modified electromagnetic radiation, the compensating signal indicative of a radiating deviation in the primary channel, and to generate an output signal corresponding to the characteristic of the sample.
A device, comprising:
- an electromagnetic radiation source configured to optically interact with a sample having a characteristic of interest;
- a first integrated computational element arranged within a primary channel and configured to optically interact with the electromagnetic radiation source and produce a first modified electromagnetic radiation;
- a second integrated computational element arranged within a second channel and configured to optically interact with the electromagnetic radiation source and produce a second modified electromagnetic radiation;
- a first detector arranged to receive the first modified electromagnetic radiation and generate a first output signal;
- a second detector arranged to receive the second modified electromagnetic radiation and generate a second output signal;
- and
- a signal processor configured to receive and computationally combine the first and second output signals to determine the characteristic of interest of the sample, wherein the second output signal is a compensating signal indicative of a radiating deviation in the primary channel.
Dependencies are inferred from the claim text.