Systems and methods for performing optical spectroscopy using a self-calibrating fiber optic probe
First Claim
1. A self-calibrating fiber optic probe comprising:
- a sensing channel for transmitting illumination light to a specimen and for collecting spectral data of the specimen, wherein the spectral data includes the illumination light diffusely reflected from the specimen at one or more wavelengths, wherein the sensing channel includes at least one illumination source fiber for transmitting the illumination light to the specimen and at least one detection fiber for collecting the illumination light diffusely reflected from the specimen; and
a calibration channel for transmitting calibration light, wherein the calibration light and the illumination light are generated simultaneously from a common light source, and collecting calibration spectral data associated with the calibration light contemporaneously with the collection of the spectral data of the specimen, wherein the calibration channel includes at least one calibration source fiber for transmitting the calibration light and at least one calibration return fiber for receiving at least a portion of the calibration light from the at least one calibration source fiber and wherein the at least one calibration source fiber and the at least one illumination source fiber comprise separate fibers having identical numerical apertures.
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Accused Products
Abstract
Systems and methods for performing optical spectroscopy using a self-calibrating fiber optic probe are disclosed. One self-calibrating fiber optic probe includes a sensing channel for transmitting illumination light to a specimen and for collecting spectral data of the specimen. The spectral data includes the illumination light diffusely reflected from the specimen at one or more wavelengths. The self-calibrating fiber optic probe may also include a calibration channel for transmitting calibration light. The calibration light and the illumination light are generated simultaneously from a common light source. The calibration channel collects calibration spectral data associated with the calibration light contemporaneously with the collection of the spectral data of the specimen.
26 Citations
43 Claims
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1. A self-calibrating fiber optic probe comprising:
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a sensing channel for transmitting illumination light to a specimen and for collecting spectral data of the specimen, wherein the spectral data includes the illumination light diffusely reflected from the specimen at one or more wavelengths, wherein the sensing channel includes at least one illumination source fiber for transmitting the illumination light to the specimen and at least one detection fiber for collecting the illumination light diffusely reflected from the specimen; and a calibration channel for transmitting calibration light, wherein the calibration light and the illumination light are generated simultaneously from a common light source, and collecting calibration spectral data associated with the calibration light contemporaneously with the collection of the spectral data of the specimen, wherein the calibration channel includes at least one calibration source fiber for transmitting the calibration light and at least one calibration return fiber for receiving at least a portion of the calibration light from the at least one calibration source fiber and wherein the at least one calibration source fiber and the at least one illumination source fiber comprise separate fibers having identical numerical apertures. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for performing self-calibrating diffuse reflectance spectroscopy, the system comprising:
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a fiber optic probe that includes;
a sensing channel for transmitting illumination light to a specimen and for collecting spectral data of the specimen, wherein the spectral data includes the illumination light diffusely reflected at one or more wavelengths from the specimen, wherein the sensing channel includes at least one illumination source fiber for transmitting the illumination light to the specimen and at least one detection fiber for collecting the illumination light diffusely reflected from the specimen; anda calibration channel for transmitting calibration light, wherein the calibration light and the illumination light are generated simultaneously from a light source, and for collecting calibration spectral data associated with the calibration light contemporaneously with the collection of the spectral data of the specimen, wherein the calibration channel includes at least one calibration source fiber for transmitting the calibration light and at least one calibration return fiber for receiving at least a portion of the calibration light from the at least one calibration source fiber and wherein the at least one calibration source fiber and the at least one illumination source fiber comprise separate fibers having identical numerical apertures; a processing unit, coupled to the sensing channel and the calibration channel, for receiving the spectral data of the specimen and the calibration spectral data to generate calibrated specimen spectral data in real-time. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method for utilizing a self-calibrating fiber optic probe comprising:
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transmitting illumination light via a sensing channel from a light source to a specimen, wherein the sensing channel includes at least one illumination source fiber for transmitting the illumination light to the specimen and at least one detection fiber for collecting the illumination light diffusely reflected from the specimen; transmitting calibration light via a calibration channel, wherein the calibration light and the illumination light are generated simultaneously from the light source, wherein the calibration channel includes at least one calibration source fiber for transmitting the calibration light and at least one calibration return fiber for receiving at least a portion of the calibration light from the at least one calibration source fiber and wherein the at least one calibration source fiber and the at least one illumination source fiber comprise separate fibers having identical numerical apertures; collecting spectral data of the specimen via the sensing channel, wherein the spectral data includes the illumination light diffusely reflected from the specimen at one or more wavelengths; and collecting calibration spectral data associated with the calibration light via the calibration channel contemporaneously with the collection of the spectral data of the specimen. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification