Composite spectral measurement method and its spectral detection instrument
First Claim
1. A composite spectral measurement method comprising:
- emitting a composite light from an incident light source composed of a continuous light source and a discrete light source, the continuous light source emitting wideband continuous light, the discrete light source emitting at least one single-wavelength light or at least one narrowband continuous light, wherein the wavelength of the at least one single-wavelength light or the spectrum of the narrowband continuous light is within a range of the spectrum of the wideband continuous light;
using a probe, irradiating the composite light onto a target position, and receiving light reflected by the target position at the probe, wherein the wideband continuous light and the at least one single-wavelength light or at least one narrowband continuous light are irradiated onto the target position through an exiting position in the probe, and the light reflected by the target position is received at a receiving position;
in a receiving unit, adding the wideband continuous light reflected by the target position and the at least one single-wavelength light or at least one narrowband continuous light reflected by the target position in an overlapped or non-overlapped manner, to obtain a composite spectrum; and
in a data processing unit, analyzing the obtained composite spectrum by using a mathematical model to obtain a concentration of a component of interest.
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Accused Products
Abstract
The present invention discloses a spectral measurement method via continuous light source and discrete light source, and a measurement instrument for non-invasive detection of human body tissue components. Said instrument includes an incident unit, a probe, a receiving unit and a data processing unit. Said composite spectral measurement method improves or strengthens the output light intensity at the wavelength that carries information of the target component within human body. It enables the spectral detection in the whole wavelength range, and thus significantly enhances the SNR of the detecting system. In the non-invasive detection instrument, light from both the continuous light source and discrete light source can be firstly selectively light-split by AOTF, or AOTF conducts light-splitting for the continuous light source, while the discrete light source LD is controlled by a spatial chopper. When data of the spectral curves achieved from said continuous light source and discrete light source are processed, data acquired under different measuring modes can be compared.
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Citations
17 Claims
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1. A composite spectral measurement method comprising:
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emitting a composite light from an incident light source composed of a continuous light source and a discrete light source, the continuous light source emitting wideband continuous light, the discrete light source emitting at least one single-wavelength light or at least one narrowband continuous light, wherein the wavelength of the at least one single-wavelength light or the spectrum of the narrowband continuous light is within a range of the spectrum of the wideband continuous light; using a probe, irradiating the composite light onto a target position, and receiving light reflected by the target position at the probe, wherein the wideband continuous light and the at least one single-wavelength light or at least one narrowband continuous light are irradiated onto the target position through an exiting position in the probe, and the light reflected by the target position is received at a receiving position; in a receiving unit, adding the wideband continuous light reflected by the target position and the at least one single-wavelength light or at least one narrowband continuous light reflected by the target position in an overlapped or non-overlapped manner, to obtain a composite spectrum; and in a data processing unit, analyzing the obtained composite spectrum by using a mathematical model to obtain a concentration of a component of interest. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A non-invasive composite spectral detection instrument comprising:
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an incident light source composed of a continuous light source and a discrete light source for emitting a composite light, the continuous light source emitting wideband continuous light, the discrete light source emitting at least one single-wavelength light or at least one narrowband continuous light, wherein the wavelength of the at least one single-wavelength light or the spectrum of the narrowband continuous light is within a range of the spectrum of the wideband continuous light; a continuous light transmission fiber for transmitting the wideband continuous light emitted from the continuous light source; a discrete light transmission fiber for transmitting the at least one single-wavelength light or at least one narrowband continuous light emitted from the discrete light source; a probe for irradiating the composite light onto a target position, and for receiving light reflected by the target position; a receiving fiber for transmitting the light reflected by the target position and received by the probe; a receiving unit for adding the wideband continuous light reflected by the target position and the at least one single-wavelength light or at least one narrowband continuous light reflected by the target position in a overlapped or non-overlapped manner, to obtain a composite spectrum; and a data processing unit for analyzing the obtained composite spectrum by using a mathematical model to obtain a concentration of a component of interest. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification