Compensated optical detection apparatus, systems, and methods
First Claim
1. An apparatus comprising:
- an array of detectors arranged as active sensors and blind sensors such that alternating active and blind sensors are disposed along a length of the array, a blind sensor being a detector prevented from receiving radiation from a source from which radiation is received by an active sensor of the array;
an amplifier arranged to receive a signal from a selected blind sensor and a signal from a selected active sensor, and to transform the received signals into an output signal representing a difference between a signal proportional to radiation received by the selected blind sensor and a signal proportional to radiation received by the selected active sensor.
1 Assignment
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Accused Products
Abstract
In some embodiments, apparatus and systems, as well as methods, may operate to receive radiation at an active detector of a pair of radiation detectors to provide a first signal proportional to an intensity of the radiation, to receive none of the radiation at a blind detector of the pair of radiation detectors to provide a second signal proportional to the reception of no radiation, and to combine the first signal and the second signal to provide an output signal representing the difference between the first signal and the second signal. The pair of radiation detectors may comprise thermopile detectors. Combination may occur via differential amplification. Additional apparatus, systems, and methods are disclosed.
10 Citations
20 Claims
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1. An apparatus comprising:
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an array of detectors arranged as active sensors and blind sensors such that alternating active and blind sensors are disposed along a length of the array, a blind sensor being a detector prevented from receiving radiation from a source from which radiation is received by an active sensor of the array; an amplifier arranged to receive a signal from a selected blind sensor and a signal from a selected active sensor, and to transform the received signals into an output signal representing a difference between a signal proportional to radiation received by the selected blind sensor and a signal proportional to radiation received by the selected active sensor. - View Dependent Claims (2, 3, 4)
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5. An apparatus comprising:
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an active detector arranged to receive radiation and to provide a first signal; a blind detector arranged such that the blind detector is prevented from receiving radiation from a source from which radiation is received by the active detector, the blind detector arranged to provide a second signal; an amplifier; and an output coupled to the amplifier, the output to provide an output signal representing a difference between the first signal and the second signal, the output signal being a temperature compensated signal. - View Dependent Claims (6, 7)
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8. An apparatus comprising:
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a sample cell structured to hold a sample; an active detector arranged to receive radiation from the sample and to provide a first signal; a blind detector arranged such that the blind detector is prevented from receiving radiation from the sample, the blind detector arranged to provide a second signal; an amplifier; and an output coupled to the amplifier, the output to provide an output signal representing a difference between the first signal and the second signal. - View Dependent Claims (9, 10, 11, 12, 13)
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14. An apparatus comprising:
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an active detector arranged to receive radiation and to provide a first signal; a blind detector arranged such that the blind detector is prevented from receiving radiation from a source from which radiation is received by the active detector, the active detector substantially temperature matched to the blind detector; and an amplifier to generate an output signal as an amplification of the first signal. - View Dependent Claims (15, 16)
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17. An apparatus comprising:
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a pair of energy detectors arranged as a set, the set consisting of an active energy detector and a blind energy detector, the blind energy detector being a detector prevented from receiving energy from a source from which energy is received by the active energy detector; and an amplifier to generate an output signal representing the difference between a signal output by the blind energy detector and a signal output by the active energy detector. - View Dependent Claims (18, 19, 20)
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Specification