CN202512059U - Laser light scattering and Raman spectrum combination device - Google Patents
Laser light scattering and Raman spectrum combination device Download PDFInfo
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- CN202512059U CN202512059U CN2011205261033U CN201120526103U CN202512059U CN 202512059 U CN202512059 U CN 202512059U CN 2011205261033 U CN2011205261033 U CN 2011205261033U CN 201120526103 U CN201120526103 U CN 201120526103U CN 202512059 U CN202512059 U CN 202512059U
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- laser
- light scattering
- raman spectrum
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Abstract
The utility model discloses a laser light scattering and Raman spectrum combination device. The device is characterized in that 90DEG, 180DEG and small-angle light scattering optical paths are arranged in test excitation light paths for laser excitation samples, scattered light of 90DEG, 180DEG and small-angle excitation samples enters a spectrometer through an imaging lens and a Rayleigh light filter, and the spectrometer scans and records a spectrum so as to obtain a Raman spectrum; the scattered light of the 90DEG, 180DEG and small-angle excitation samples passes through a light diaphragm, passes through an imaging lens and then enters the spectrometer, the spectrometer is controlled to scan to laser excitation wavelength, the width of a slit is adjusted so as to enable the scattered light with the wavelength equal to the laser excitation wavelength to pass through, the photon counting measurement and photon-correlation scattering measurement are carried out, and the laser light scattering and Raman spectrum combination is carried out; and the measurement and analysis on the structure and characteristics of substances are realized through the combination of a light scattering photon correlation spectrum and the Raman spectrum. The laser light scattering and Raman spectrum combination device has the advantages that the singleness of the traditional Raman spectrometer test method is overcome, and the serviceable range of a laser Raman spectrometer is extended.
Description
Technical field
The utility model belongs to the optic analytical instrument field, particularly a kind of laser light scattering-Raman spectrum combined apparatus.
Background technology
The Raman scattering phenomenon has more and more received concern widely because Raman spectrum has outstanding features such as abundant information, Raman shift and incident light frequency-independent, analysis efficiency height and amount of samples are few since nineteen twenty-eight is found by India physicist Raman.In recent years; Raman spectrometer can detect composition, content of material etc. accurately, has become the important means of researching and analysing of various fields such as chemical analysis, surface chemistry, mineralogy, semiconductor material, environmental protection, biomedicine, food medicine and archaeology.
Dynamic light scattering is because the Brownian movement of macromolecule in solution; Make light intensity produce pulsation in time; Adopt digital correlator technical finesse photon fluctuating signal; Can obtain the diffuse information of macromolecule motion, utilize Stokes-einstein (Stokes-Einstein) Equation for Calculating to draw absolute molecular weight size and distribution thereof again.Dynamic light scattering be otherwise known as photon correlation spectrometry (PCS) or quasi-elastic light scattering method, it is used for the absolute molecular weight of characterize polymers, be the present whole world generally acknowledge a kind of the most effective, near real method.Laser light scattering is as the macromolecular analysis and research means of a kind of detection; With its remarkable performance; Be widely used in fields such as biotechnology, medicine, chemical industry, environmental protection and food, its research and development all have crucial meaning to environmental protection, medicine and food security.
For the usable range of expanding Raman spectrometer, the service efficiency that improves Raman spectrometer.Traditional Raman spectrum analysis and the analysis of laser light scattering photon correlation spectroscopy be through separately independently instrumental analysis measure, its shortcoming is: can not the combined measurement analysis, increase and measure cost, make troubles to analysis to measure.
The utility model content
In order to solve the problems of the technologies described above, the utility model provide a kind of simple in structure, function increases, cost reduces, regulate efficient and measuring accuracy increases and need not drop into new equipment, is convenient to the laser light scattering-Raman spectrum combined apparatus of penetration and promotion.
The technical scheme that the utility model solves above-mentioned technical matters is: the excitation light path and the light scattering imaging optical path that comprise the laser excitation sample; Be provided with laser instrument, catoptron, half-wave plate, condenser lens and sample cell on the excitation light path of described laser excitation sample successively; Be provided with sample cell, diaphragm, the first scattering imaging len, second scattering imaging len and the monochromator on the described light scattering imaging optical path successively; Excitation light path becomes 90 degree with the light scattering imaging optical path, diaphragm is an aperture.
A kind of laser light scattering-Raman spectrum combined apparatus; The excitation light path and the light scattering imaging optical path that comprise the laser excitation sample; Be provided with laser instrument, first catoptron, half-wave plate, condenser lens, second catoptron and sample cell on the excitation light path of described laser excitation sample successively; Be provided with sample cell, diaphragm, the first scattering imaging len, second scattering imaging len and the monochromator on the described light scattering imaging optical path successively; Excitation light path and light scattering imaging optical path are 180 degree, and diaphragm is an aperture.
A kind of laser light scattering-Raman spectrum combined apparatus; The excitation light path and the light scattering imaging optical path that comprise the laser excitation sample; Be provided with laser instrument, first catoptron, half-wave plate, condenser lens, second catoptron and sample cell on the excitation light path of described laser excitation sample successively; Be provided with sample cell, diaphragm, the first scattering imaging len, second scattering imaging len and the monochromator on the described light scattering imaging optical path successively; Excitation light path and light scattering imaging optical path are 0 degree, and diaphragm is the logical light diaphragm of annulus.
A kind of laser light scattering-Raman spectrum combined apparatus; Also comprise photoelectric commutator, signal amplifier, impulse meter, correlator and computing machine; Described monochromator is connected with photoelectric commutator; Photoelectric commutator is connected with the input end of signal amplifier, and the output terminal of signal amplifier is connected with impulse meter with correlator respectively, and described correlator is connected with computing machine respectively with impulse meter.
Because adopt technique scheme, the beneficial effect of the utility model is:
(1) be applied to the conventional laser Raman spectrometer, as long as it just can carry out laser light scattering photon correlation analysis of spectrum and laser Raman spectroscopy analysis conversion, and need not to increase too many equipment input through conversion diaphragm and optical filter, and commercial promise is good.
(2) be applied to the conventional laser Raman spectrometer, it just can carry out laser light scattering photon correlation analysis of spectrum as long as through regulating monochromator to the laser wave strong point, insert diaphragm, has expanded the functions of use of common laser Raman spectrometer.
(3) for laser light scattering photon correlation spectrometry, laser light scattering-Raman spectrum combined apparatus adopts the high-resolution monochromator splitting only to let Rayleigh scattering light pass through, and can obtain very pure Rayleigh scattering light, has improved measuring accuracy.
(4) light scattering photon correlation spectrum and Raman spectrum combined measurement amalyzing substances structure and characteristic can be analysed in depth the understanding substance characteristics more.
(5) the utility model is simple in structure, compact, and is easy to manufacture, and cost is low, uses fast, the replacing of instrument, sample cell and sample when having removed each the measurement from, and operation is simple, practiced thrift a large amount of Measuring Time, high efficiency, suitable penetration and promotion.
Description of drawings
Fig. 1 is the index path of the utility model embodiment 1.
Fig. 2 is the index path of the utility model embodiment 2.
Fig. 3 is the index path of the utility model embodiment 3.
Embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail.
As shown in Figure 1, Fig. 1 is 90 degree light scattering photon correlation spectrum and Raman spectrum combined instrument index paths in the utility model.It consists of laser instrument, mirror M
1, half-wave plate P
1, condenser lens L
1, sample cell S, aperture H, scattering imaging len L
2, scattering imaging len L
3, optical filter F, monochromator, photoelectric commutator, signal amplifier, impulse meter, correlator and computing machine.Mirror M
1Reflect the laser light on the sample among the sample cell S; Half-wave plate P
1Can change laser polarization direction and carry out the polarization spectrum measurement; Condenser lens L
1On the sample of laser focusing in sample cell S; Sample cell S bottom surface and the logical light in four sides; Aperture H makes it have only near the scattered light of 90 degree to pass through, and makes it can carry out 90 degree laser light scatterings; Condenser lens L
2And L
3Be the scattering imaging lens group, its optical axis is perpendicular to incident light direction, L
2And L
3Scattered light is focused on the monochromator slit, so that monochromator splitting; Optical filter F elimination Rayleigh scattering light is beneficial to laser Raman spectroscopy and measures; Monochromator is with the scattered light beam split output of different colours, so that photon correlation spectrum and raman spectroscopy measurement; Photoelectric commutator changes light signal into electric signal; Signal amplifier amplifies photosignal makes it can drive back level load; Impulse meter is with the photosignal count measurement; Correlator carries out correlated count and 90 degree related operations with photosignal; Computing machine is handled laser Raman spectroscopy and laser light scattering result, show and is preserved.
The scattered light of excited sample is through imaging len and optical filter incident light spectrometer in the utility model, and spectrometer scanning record spectrum obtains Raman spectrum; The scattered light of excited sample is gone into spectrometer through imaging len again through diaphragm, and the control spectrometer scans laser excitation wavelength, regulates slit width and only lets the wavelength be that the scattered light of laser excitation wavelength passes through, and carries out photon counting and measures and the photon correlation scattering analysis.Through conversion diaphragm and optical filter, realize laser light scattering-Raman spectrum coupling.
As shown in Figure 2, Fig. 2 realizes 180 degree light scattering photon correlation spectrum and Raman spectrum combined instrument index paths in the utility model, and it consists of laser instrument, mirror M
1, half-wave plate P
1, condenser lens L
1, mirror M
2, sample cell S, aperture H, scattering imaging len L
2, scattering imaging len L
3, optical filter F, monochromator, photoelectric commutator, signal amplifier, impulse meter, correlator and computing machine.M among the figure
1Be catoptron, mirror M
1Reflect the laser light to small reflector M
2On; Small reflector M
2Reflect the laser light to again on the sample among the sample cell S; P
1Be half-wave plate, P
1Can change laser polarization direction carries out polarized light and excites measurement; L
1Be condenser lens, L
1On the sample of laser focusing in sample cell S; The logical light in sample cell S side or four sides; H is an aperture, makes it have only near the scattered light of 180 degree to pass through; L
2And L
3Be the scattering imaging lens group, its optical axis is parallel to incident light direction, L
2And L
3Scattered light is focused on monochromator (spectrometer) slit, so that monochromator splitting; F is an optical filter, and the elimination Rayleigh scattering light is beneficial to raman spectroscopy measurement; Monochromator is with the scattered light beam split output of different colours, so that photon correlation spectrum and raman spectroscopy measurement; Photoelectric commutator changes light signal into electric signal; Signal amplifier amplifies photosignal makes it can drive back level load; Impulse meter is with the Photoelectric Signal Processing count measurement; Correlator carries out correlated count and 180 degree related operations with photosignal; Computing machine is handled laser Raman spectroscopy and laser light scattering result, show and is preserved.
As shown in Figure 3, Fig. 3 realizes low-angle light scattering photon correlation spectrum and Raman spectrum combined instrument index path in the utility model, and it consists of laser instrument, mirror M
1, half-wave plate P
1, condenser lens L
1, mirror M
2, sample cell S, annulus printing opacity diaphragm H, scattering imaging len L
2, scattering imaging len L
3, optical filter F, monochromator, photoelectric commutator, signal amplifier, impulse meter, correlator and computing machine.M among the figure
1Be catoptron, mirror M
1Reflect the laser light to mirror M
3On; Mirror M
3Reflect the laser light to again on the sample among the sample cell S; P
1Be half-wave plate, P
1Can change laser polarization direction; L
1Be condenser lens, L
1On the sample of laser focusing in sample cell S; The logical light in sample cell S two relative side or four sides; H is an annulus printing opacity diaphragm; Make it have only near the small angle scattering light of 0 degree to pass through; The obstructed light of center circle of annulus printing opacity diaphragm H partly blocks near incident light among a small circle 0 degree; The light tight center circle of the different radii of annulus printing opacity diaphragm H is different small angle scattering, is arranged to 3 degree, 5 degree, 7 degree or 9 degree scattered lights and passes through, and carries out different small angle scattering photon correlation spectrometrys; L
2And L
3Be the scattering imaging lens group, its optical axis is parallel to incident light direction, L
2And L
3Scattered light is focused on monochromator (spectrometer) slit, so that monochromator splitting; F is an optical filter, the elimination Rayleigh scattering light; Monochromator is with the scattered light beam split output of different colours, so that photon correlation spectrum and raman spectroscopy measurement; Photoelectric commutator changes light signal into electric signal; Signal amplifier amplifies photosignal makes it can drive back level load; Impulse meter is with the Photoelectric Signal Processing count measurement; Correlator carries out correlated count and corresponding low-angle related operation with photosignal; Computing machine is handled laser Raman spectroscopy and laser light scattering result, show and is preserved.
Claims (10)
1. laser light scattering-Raman spectrum combined apparatus; It is characterized in that: the excitation light path and the light scattering imaging optical path that comprise the laser excitation sample; Be provided with laser instrument, catoptron, half-wave plate, condenser lens and sample cell on the excitation light path of described laser excitation sample successively; Be provided with sample cell, diaphragm, the first scattering imaging len, second scattering imaging len and the monochromator on the described light scattering imaging optical path successively; Excitation light path becomes 90 degree with the light scattering imaging optical path, diaphragm is an aperture.
2. laser light scattering according to claim 1-Raman spectrum combined apparatus is characterized in that: also comprise a tablet filter, described optical filter is arranged between the first scattering imaging len and the second scattering imaging len.
3. laser light scattering according to claim 1-Raman spectrum combined apparatus; It is characterized in that: also comprise photoelectric commutator, signal amplifier, impulse meter, correlator and computing machine; Described monochromator is connected with photoelectric commutator; Photoelectric commutator is connected with the input end of signal amplifier, and the output terminal of signal amplifier is connected with impulse meter with correlator respectively, and described correlator is connected with computing machine respectively with impulse meter.
4. laser light scattering-Raman spectrum combined apparatus; It is characterized in that: the excitation light path and the light scattering imaging optical path that comprise the laser excitation sample; Be provided with laser instrument, first catoptron, half-wave plate, condenser lens, second catoptron and sample cell on the excitation light path of described laser excitation sample successively; Be provided with sample cell, diaphragm, the first scattering imaging len, second scattering imaging len and the monochromator on the described light scattering imaging optical path successively; Excitation light path and light scattering imaging optical path are 180 degree, and diaphragm is an aperture.
5. laser light scattering according to claim 4-Raman spectrum combined apparatus is characterized in that: also comprise a tablet filter, described optical filter is arranged between the first scattering imaging len and the second scattering imaging len.
6. laser light scattering according to claim 4-Raman spectrum combined apparatus; It is characterized in that: also comprise photoelectric commutator, signal amplifier, impulse meter, correlator and computing machine; Described monochromator is connected with photoelectric commutator; Photoelectric commutator is connected with the input end of signal amplifier, and the output terminal of signal amplifier is connected with impulse meter with correlator respectively, and described correlator is connected with computing machine respectively with impulse meter.
7. laser light scattering-Raman spectrum combined apparatus; It is characterized in that: the excitation light path and the light scattering imaging optical path that comprise the laser excitation sample; Be provided with laser instrument, first catoptron, half-wave plate, condenser lens, second catoptron and sample cell on the excitation light path of described laser excitation sample successively; Be provided with sample cell, diaphragm, the first scattering imaging len, second scattering imaging len and the monochromator on the described light scattering imaging optical path successively; Excitation light path and light scattering imaging optical path are 0 degree, and diaphragm is the logical light diaphragm of annulus.
8. laser light scattering according to claim 7-Raman spectrum combined apparatus is characterized in that: also comprise a tablet filter, described optical filter is arranged between the first scattering imaging len and the second scattering imaging len.
9. laser light scattering according to claim 7-Raman spectrum combined apparatus; It is characterized in that: also comprise photoelectric commutator, signal amplifier, impulse meter, correlator and computing machine; Described monochromator is connected with photoelectric commutator; Photoelectric commutator is connected with the input end of signal amplifier, and the output terminal of signal amplifier is connected with impulse meter with correlator respectively, and described correlator is connected with computing machine respectively with impulse meter.
10. laser light scattering according to claim 7-Raman spectrum combined apparatus is characterized in that: the logical light diaphragm of said annulus is for satisfying a kind of in test 3 degree, 5 degree, 7 degree or 9 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205261033U CN202512059U (en) | 2011-12-16 | 2011-12-16 | Laser light scattering and Raman spectrum combination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205261033U CN202512059U (en) | 2011-12-16 | 2011-12-16 | Laser light scattering and Raman spectrum combination device |
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| Publication Number | Publication Date |
|---|---|
| CN202512059U true CN202512059U (en) | 2012-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205261033U Expired - Fee Related CN202512059U (en) | 2011-12-16 | 2011-12-16 | Laser light scattering and Raman spectrum combination device |
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|---|---|
| CN (1) | CN202512059U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630523A (en) * | 2012-08-21 | 2014-03-12 | 杭州希玛诺光电技术有限公司 | Laser induction spectrum generating device used for water quality optical analyzer |
| US11067505B2 (en) | 2018-03-28 | 2021-07-20 | Shandong University | Small angle laser scatterometer with temperature-pressure-controllable sample cell and characterization method |
-
2011
- 2011-12-16 CN CN2011205261033U patent/CN202512059U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630523A (en) * | 2012-08-21 | 2014-03-12 | 杭州希玛诺光电技术有限公司 | Laser induction spectrum generating device used for water quality optical analyzer |
| US11067505B2 (en) | 2018-03-28 | 2021-07-20 | Shandong University | Small angle laser scatterometer with temperature-pressure-controllable sample cell and characterization method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20151216 |
|
| EXPY | Termination of patent right or utility model |