Methods and devices for optically determining a characteristic of a substance
First Claim
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1. 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.
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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.
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Citations
23 Claims
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1. A device, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A device, comprising:
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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. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification