Composite spectral measurement method and its spectral detection instrument
First Claim
1. A composite spectral measurement method comprising an incident unit, a probe, a receiving unit and a data processing unit, wherein:
- an incident light source in said incident unit is a composite light source, which is comprised of a continuous light source and a discrete light source;
that is, the continuous light source includes at least one single wavelength light source, or is composed of a continuous light source and continuous light sources with different characteristics;
said probe may make the continuous light source and the discrete light source to conduct light incidence and receipt at one and the same position, and decide a layout of optical lengths according to light intensities of respective light sources, or may make the continuous light source and the discrete light source to conduct light incidence and receipt at different positions, and decide a layout of optical lengths according to light intensities of respective light sources;
the composite spectral method is implemented in said receiving unit, which includes adding the continuous and discrete spectra overlapped and adding the continuous and discrete spectra non-overlapped;
in said data processing unit, the composite spectra received by the receiving unit are analyzed and calculated by using a mathematical model so as to derive a concentration of a certain component of interest such as blood glucose.
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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
15 Claims
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1. A composite spectral measurement method comprising an incident unit, a probe, a receiving unit and a data processing unit, wherein:
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an incident light source in said incident unit is a composite light source, which is comprised of a continuous light source and a discrete light source;
that is, the continuous light source includes at least one single wavelength light source, or is composed of a continuous light source and continuous light sources with different characteristics;
said probe may make the continuous light source and the discrete light source to conduct light incidence and receipt at one and the same position, and decide a layout of optical lengths according to light intensities of respective light sources, or may make the continuous light source and the discrete light source to conduct light incidence and receipt at different positions, and decide a layout of optical lengths according to light intensities of respective light sources;
the composite spectral method is implemented in said receiving unit, which includes adding the continuous and discrete spectra overlapped and adding the continuous and discrete spectra non-overlapped;
in said data processing unit, the composite spectra received by the receiving unit are analyzed and calculated by using a mathematical model so as to derive a concentration of a certain component of interest such as blood glucose. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification