CN109115747A - System and method for based on Raman spectrum and OCT measurement glass material property - Google Patents

System and method for based on Raman spectrum and OCT measurement glass material property Download PDF

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Publication number
CN109115747A
CN109115747A CN201811059464.4A CN201811059464A CN109115747A CN 109115747 A CN109115747 A CN 109115747A CN 201811059464 A CN201811059464 A CN 201811059464A CN 109115747 A CN109115747 A CN 109115747A
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sample
oct
glass material
raman spectrum
raman
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CN201811059464.4A
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CN109115747B (en
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傅洪波
毛广娟
张建
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Guangzhou Medical University
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Guangzhou Medical University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/65Raman scattering
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/41Refractivity; Phase-affecting properties, e.g. optical path length

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  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

Abstract

The invention discloses a kind of System and method fors that glass material property is measured based on Raman spectrum and optical coherence imaging (OCT) technology, the system comprises: glass material sample, glass slide, magazine, mobile platform, Raman spectrometer, OCT, data, which are extracted, includes two loopholes with processing module, display, the magazine;The described method includes: obtaining image when glass slide zero load by loophole with OCT first, then the sample being placed on glass slide is detected to obtain sample spectrum diagram and OCT image with OCT and Raman spectrometer respectively;Using computer software analysis image, to obtain sample boundaries and range information, and by the calculating of light path matching principle completion refractive index, analysis raman spectrum obtains sample chemical property;Final measurement is shown by display.It is easy that the present invention designs simple operations;Realize the measurement and comprehensive analysis of the multi objectives such as physical attribute and the chemical component of glass material.

Description

System and method for based on Raman spectrum and OCT measurement glass material property
Technical field
The present invention relates to glass material property fields of measurement, more particularly to one kind to measure glass based on Raman spectrum and OCT The System and method for of Material Physics refractive index and chemical component property.
Background technique
Glass material is widely used in building, is a kind of amorphous inorganic non-metallic material, usually with a variety of inorganic mines Object (such as quartz sand, borax, boric acid, barite, barium carbonate, lime stone, feldspar, soda ash) is primary raw material, is additionally incorporated few It measures made of auxiliary material, its main component is silica and other oxides.
Glass materials refractive index is an extremely important physical index, and measurement method includes prism method, Polarization Method (survey Try Brewster's angle), contact pin method, Abbe refractometer method, also include optical coherence imaging technique (OCT) method, wherein OCT method is more It is convenient, material need to be only directly placed in scanning range, the OCT image comprising material characteristics information can be obtained, measurement is most It is simple direct, is a kind of quick, detection refractive index new technique.
Thus the refractive index of glass material can test.But thus much an appraisal basis is relatively simple, especially refractive index phase In the case where close, it is difficult to distinguish glass material.It is therefore desirable to enrich corresponding measurement index, and Raman spectroscopy conduct A kind of mature technology can screen different chemical composition using " molecular fingerprint " characteristic of Raman spectrum, and it is used as a kind of half Quantitative and non-quantitation technology, is difficult accurate quantification different chemical composition content, and refractive index can make up at this time, therefore two kinds of skills The combination of art can play bigger power, form analysis result more comprehensive to glass material, comprehensive and report.
Apparatus of the present invention realize the combination of above-mentioned technology, and the physics of glass material and the survey of chemical property can be achieved at the same time Amount obtains the comprehensive evaluating to glass material, and detection is easy, quick, accurate.
Summary of the invention
It is a kind of based on Raman spectrum and OCT technology measurement glass object of the present invention is to provide in view of the defects existing in the prior art The System and method for of glass material properties, measurement while physics and chemical property to realize glass material, obtains to glass material The comprehensive evaluating of material, and detection is easy, quick, accurate.
In order to achieve the above object, the present invention adopts the following technical scheme: a kind of measure glass based on Raman spectrum and OCT technology The system of glass material properties, including glass material sample, glass slide, magazine, mobile platform, Raman spectrometer, OCT, data mention It takes and includes two loopholes with processing module, display, the magazine.
Further, the Raman spectrometer wavelength model is optional, and the Raman spectrum for measuring glass material sample is believed Breath;The OCT wavelength model is optional, and principle is the light of low-coherence light source sending after fiber optic splitter, is uniformly divided into Two beams, respectively enter reference arm and sample arm, the reference light returned by the reflected sample light of sample and mirror reflection It is coupled on detector through fiber optic splitter phase dry doubling again, (is in image for OCT figure in surface when obtaining glass slide zero load herein One straight line, referred to as baseline) with place sample when Sample Scan figure.
Preferably, the sample is the glass material of surfacing.
Preferably, the slide thickness is 1 ~ 2mm, measures unloaded image and placement sample for providing OCT.
Preferably, the magazine provides environmental requirement for Raman spectrometer and OCT measurement, extraneous interference is avoided, into one With walking, the light of loophole there are two the magazine tops, Raman spectrometer and OCT are via herein into magazine.
Further, the mobile platform is for placing glass slide and sample, and horizontal can at the uniform velocity drag platform for drawing The scanning of graceful spectrometer and OCT to sample.
Preferably, the data extract the synthesis for carrying out unloaded figure and sample drawing with computer software with processing module, And optimize through median filtering, Boundary Recognition is carried out using canny operator, utilizes Hough transform (Hough Transformation Straight Line Identification) is carried out to each interface of composite diagram, the distance feature between the straight line of acquisition, according to light path Sample refractive index is calculated automatically with principle, and analysis raman spectrum obtains sample chemical property.
Further, the display is for showing final glass material property measurement results.
A method of glass material property being measured based on Raman spectrum and OCT technology, comprising the following steps: a, transport first Baseline image when with OCT by loophole acquisition glass slide zero load;It carries respectively with OCT and Raman spectrometer to being placed on again Sample on slide is detected, i.e., at the uniform velocity drags mobile platform, be scanned Raman spectrometer successively to sample with OCT and obtain Take sample Raman spectrogram and OCT image;B, using two image of computer software analysis, to obtain sample boundaries and feature letter Breath, and by the calculating of light path matching principle formula completion refractive index, pass through the analysis that Raman spectrum completes chemical property;C, final Measurement result is shown by display.
The beneficial effects of the present invention are: (1) this system realizes Raman spectroscopy and two kinds of optical coherence imaging technique The combination of technology fast implements the physical attribute (light refractive index) and systematic survey and the analysis of chemical component of glass material.
(2) this method realizes the light refractive index of glass material difference tomography by computer software by arithmetic programming Automation, digitlization, intelligent measuring.
Detailed description of the invention
Attached drawing 1 is system and device schematic diagram of the invention.
Attached drawing 2 is measuring method flow chart provided by the invention.
Attached drawing 3 is Method And Principle schematic diagram provided by the present invention.
Attached drawing 4 is a kind of glass material embodiment Raman spectrogram provided by the invention.
Attached drawing 5 is a kind of glass material embodiment OCT figure provided by the invention, composite diagram.
Attached drawing 6 is the interaction figure provided by the invention using 5 composite diagram of attached drawing after algorithm process.
In figure, 1- sample 2- glass slide 3- magazine 301-OCT loophole 302- Raman spectrometer loophole 4- is moved Moving platform 5-OCT 6- Raman spectrometer 7- data are extracted and processing module 8- display.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specifically real Applying example, the invention will be further described, so that those skilled in the art can better understand technical solution of the present invention, But the embodiment of invention is without being limited thereto.
As shown in Figure 1, for a kind of system and device principle for measuring glass material property based on Raman spectrum and OCT technology Figure, including glass material sample 1, glass slide 2, magazine 3, mobile platform 4, Raman spectrometer 5, OCT6, data are extracted and processing Module 7, display 8, the magazine include two loopholes 301,302.
It is illustrated in figure 2 a kind of method flow based on Raman spectrum and OCT technology measurement glass material property of the present invention Figure, comprising the following steps: the mobile platform 4 for not placing sample 1 a, is placed in 301 lower section of loophole, starting OCT6 acquisition carries glass Unloaded baseline chart when piece 2 is unloaded, the glass material sample of surfacing 1 is placed, placed it in later under loophole 302 Side, then mobile platform 4 is at the uniform velocity dragged, Raman spectrometer 5 is respectively started and OCT6 scanning obtains the Raman spectrum of sample 1 and OCT schemes Picture;B, scanning figure acquired in two instruments is uploaded to data extraction and processing module 7 through data line connection, here with meter Calculation machine software carries out the synthesis of unloaded figure and sample drawing, and optimizes through median filtering, carries out Boundary Recognition using canny operator, Straight Line Identification is carried out using each interface of the Hough transform (Hough Transformation) to composite diagram, is scanned along longitudinal direction (algorithm process schematic diagram p in such as Fig. 30~p4It is shown) obtain straight line between distance feature, calculated automatically according to light path matching principle Sample refractive index, analysis raman spectrum obtain sample chemical property;C, final result is connected to display 8 by data line and carries out Display.
It should be noted that wherein can realize the measurement to sample refractive index, principle such as Fig. 3 institute based on light path matching principle Show: the light path matching principle and the corresponding faultage image location information of physics light path that OCT coherent measurement requires: placing sample Before, i.e., when objective table is vacant, its tomograph is scanned, the position of stage surface is y in figure0(as baseline position);It is carrying After placing sample on object platform, it is tightly attached to the lower surface of sample on objective table, is scanned;In Sample Scan tomograph, if sample The position of product upper surface is y1, the lower surface of sample is that position is y in figure2;If sample refractive index is n, then have , then by respective image processing technique described above, respective distance parameter is extracted, refractive index can be calculated by substituting into formula.
As the Raman spectrogram that Fig. 4 is a kind of glass material sample embodiment obtains corresponding chemical by Raman spectrum analysis Ingredient, predominantly silica.
As shown in Figure 5, Figure 6, Fig. 5 (a) is vacant stage surface OCT figure;Fig. 5 (b) is to place a kind of surfacing glass OCT figure after glass material sample;Fig. 5 (c) is the image after being synthesized unloaded figure with sample drawing using computer software;Fig. 6 is Straight border after Hough transform identifies is extracted and passes through algorithm longitudinal scanning (p in figure0~p4) boundary spacing is carried out to it From measurement, obtain multiple groups up-and-down boundary distance and coboundary to parallax range parameter value i.e.With, rear to substitute into Light path matching principle formula, then statistical disposition test result, the measuring glass sample refractive index are 1.882 ± 0.003, and Standard value 1.8926 is close.
In conclusion more preferred separate embodiment used herein a kind of is based on Raman to provided by the present invention Spectrum and the System and method for of OCT technology measurement glass material property are expounded, the explanation of above example is only intended to Help understands method and core concept of the invention, it is noted that although carrying out referring to aforementioned separate embodiment to the present invention It is described in detail, but to those skilled in the art, without departing from the principle of the present invention, if can also make Dry improvements and modifications, these modifications and embellishments are also considered to be within the scope of the present invention.

Claims (10)

1. system of the one kind based on Raman spectrum and optical coherence imaging (OCT) technology measurement glass material property, feature exist In, including glass material sample, glass slide, magazine, mobile platform, Raman spectrometer, OCT, data extract and processing module, aobvious Show that device, the magazine include two loopholes.
2. the system based on Raman spectrum and OCT technology measurement glass material property, feature exist as described in claim 1 In the Raman spectrometer wavelength model is optional, for measuring the Raman spectral information of glass material sample;The OCT wavelength Model is optional, and principle is the light of low-coherence light source sending after fiber optic splitter, is uniformly divided into two beams, respectively enterd Reference arm and sample arm, the reference light returned by the reflected sample light of sample and mirror reflection is again through fiber optic splitter Phase dry doubling is coupled on detector, (is herein a straight line, referred to as base in image for OCT figure in surface when obtaining glass slide zero load Line) with place sample when Sample Scan figure.
3. the system based on Raman spectrum and OCT technology measurement glass material property, feature exist as described in claim 1 In the sample is the glass material of surfacing.
4. the system based on Raman spectrum and OCT technology measurement glass material property, feature exist as described in claim 1 In the slide thickness is 1 ~ 2mm, measures unloaded image and placement sample for providing OCT.
5. the system based on Raman spectrum and OCT technology measurement glass material property, feature exist as described in claim 1 In the magazine provides environmental requirement for Raman spectrometer and OCT measurement, avoids extraneous interference, further, the magazine Top is there are two loophole, and the light of Raman spectrometer and OCT is via entering magazine herein.
6. the system based on Raman spectrum and OCT technology measurement glass material property, feature exist as described in claim 1 In the mobile platform horizontal can at the uniform velocity drag platform for Raman spectrometer and OCT pairs for placing glass slide and sample The scanning of sample.
7. the system based on Raman spectrum and OCT technology measurement glass material property as described in claim 1 and 2, feature It is, the data extract the synthesis for carrying out unloaded figure and sample drawing with computer software with processing module, and filter through intermediate value Wave optimization carries out Boundary Recognition using canny operator, using Hough transform (Hough Transformation) to composite diagram Each interface carry out Straight Line Identification, obtain straight line between distance feature, sample refractive index is calculated according to light path matching principle automatically, Analysis raman spectrum obtains sample chemical property.
8. the system based on Raman spectrum and OCT technology measurement glass material property, feature exist as claimed in claim 7 In the light path matching principle: the light path matching principle and the corresponding tomograph image position of physics light path that OCT coherent measurement requires Confidence breath: before placing sample, i.e., when objective table is vacant, scanning its tomograph, and the position of stage surface is y in figure0(as Baseline position), after placing sample on objective table, it is tightly attached to the lower surface of sample on objective table, is scanned, Sample Scan In tomograph, if the position of sample upper surface is y1, the lower surface of sample is that position is y in figure2If sample refractive index is n, Then have
9. the system based on Raman spectrum and OCT technology measurement glass material property, feature exist as described in claim 1 In the display is for showing final glass material property measurement results.
10. the method based on Raman spectrum and OCT technology measurement glass material property, feature exist as described in claim 1 In, comprising the following steps:
A, baseline image when first with OCT by loophole acquisition glass slide zero load;Use OCT and Raman spectrum respectively again Instrument detects the sample being placed on glass slide, i.e., at the uniform velocity drags mobile platform, makes Raman spectrometer and OCT successively to sample Product, which are scanned, obtains sample Raman spectrogram and OCT image;
B, using two image of computer software analysis, to obtain sample boundaries and characteristic information, and it is public by light path matching principle Formula completes the calculating of refractive index, and the analysis of chemical property is completed by Raman spectrum;
C, final measurement is shown by display.
CN201811059464.4A 2018-09-12 2018-09-12 System and method for measuring glass material properties based on Raman spectrum and OCT Expired - Fee Related CN109115747B (en)

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