CN203688070U - Raman spectrometer detecting high scattering medium - Google Patents
Raman spectrometer detecting high scattering medium Download PDFInfo
- Publication number
- CN203688070U CN203688070U CN201320740301.9U CN201320740301U CN203688070U CN 203688070 U CN203688070 U CN 203688070U CN 201320740301 U CN201320740301 U CN 201320740301U CN 203688070 U CN203688070 U CN 203688070U
- Authority
- CN
- China
- Prior art keywords
- convex lens
- high scattering
- filter plate
- scattering medium
- semi
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Abstract
A Raman spectrometer detecting a high scattering medium comprises a laser; a collimation convex lens, a half-transparent half-reflective spectroscope, a cone lens and a convergence convex lens are arranged in sequence on an output optical path of the laser; a filter plate, a reception convex lens and a light splitting spectrometer receiving a light beam filtered by the filter plate are arranged in sequence on a reflective optical path of the half-transparent half-reflective spectroscope; an output end of the light splitting spectrometer is connected with an array CCD detector used for forming images for the light beam split by the light splitting spectrometer; a focus point of the convergence convex lens corresponds to a tested sample. The cone lens is employed to generate approximation zero-order Bessel light beam so as to overcome high scattering property of the medium, thereby reducing laser loss, so a light spot can be focused in the high scattering medium, transmission depth of the light beam in the high scattering medium can be improved, spectrum dispersion can be reduced, and Raman signals on the focus point can be collected to carry out spectral analysis.
Description
Technical field
The utility model relates to a kind of Raman spectrometer.Particularly relate to the Raman spectrometer of the high scattering medium of a kind of effective detection.
Background technology
Raman scattering is the inelastic scattering phenomenon that a kind of molecule is subject to photon excitation, Raman Characterization the molecular structure property of chemical substance, can be used for identifying the functional group existing in molecule, realize the fingerprint of chemical molecular and debate knowledge, thereby be used as identifying the effective ways of identifying unknown chemicals.
Raman spectrum has been widely used in the fields such as material, chemical industry, oil, macromolecule, biology, environmental protection, geology at present.
Due to the scattering process of high scattering medium (as biological tissue), make the penetration depth of laser very limited on the one hand, cause the high scattering loss of laser, thereby cause the application restric-tion of existing Raman spectrometer in surface analysis; Make on the other hand Raman spectrum disperse, reduce the accuracy of spectral detection.For analyzing the material under high scattering medium top layer, must increase the penetration depth of laser in high scattering medium, and reduce spectrum disperse.
Summary of the invention
Technical problem to be solved in the utility model is, providing a kind of can increase the transmission depth of light beam in high scattering medium, reduces spectrum disperse, and the Raman signal of collecting focus place carries out the Raman spectrometer of the high scattering medium of detection of spectral analysis.
The technical scheme that the utility model adopts is: a kind of Raman spectrometer that detects high scattering medium, comprise laser instrument, along being disposed with collimation convex lens on the output light path of described laser instrument, semi-transparent semi-reflecting spectroscope, Conical Lenses and convergence convex lens, on described semi-transparent semi-reflecting spectroscopical reflected light path, be disposed with filter plate, receive the sub-ray spectrometer of convex lens and the light beam of reception after filter plate filtering convex lens focus, the output terminal of described sub-ray spectrometer is connected with the array CCD detecting device that the light beam after sub-ray spectrometer light splitting is carried out to imaging, the corresponding detected sample of focus point of described convergence convex lens.
Described collimation convex lens and the fixed installation of described laser coaxial, the axes intersect of described semi-transparent semi-reflecting spectroscopical axis and described collimation convex lens, described Conical Lenses and assemble convex lens and described collimation convex lens coaxially fixedly mount, the axes intersect of the axis of described filter plate and described collimation convex lens, described reception convex lens and described filter plate coaxially fixedly mount.
The axis angle of described semi-transparent semi-reflecting spectroscopical axis and described collimation convex lens is 45 degree.
The axis angle of described semi-transparent semi-reflecting spectroscopical axis and described filter plate is 45 degree.
The intersect vertical axis of the axis of described collimation convex lens and described filter plate.
A kind of Raman spectrometer that detects high scattering medium of the present utility model, utilize Conical Lenses to produce approximate zeroth order bessel beam to overcome the high scattering of medium, reduce laser loss, make it in high scattering medium, be focused into a hot spot, increase the transmission depth of light beam in high scattering medium, reduce spectrum disperse, and the Raman signal of collecting focus place carries out spectral analysis.There is following beneficial effect:
1, reduce spectrum disperse, obtain tested high scatterer Raman spectrum accurately;
2, increase the transmission depth of laser in high scatterer, obtain high scatterer internal excitation spectrum, improve the accuracy that Raman spectrometer detects high scatterer.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present utility model.
In figure
1: laser instrument 2: collimation convex lens
3: semi-transparent semi-reflecting spectroscope 4: Conical Lenses
5: assemble convex lens 6: filter plate
7: receive convex lens 8: sub-ray spectrometer
9: array CCD detecting device 10: detected sample
11: laser beam
Embodiment
Below in conjunction with embodiment and accompanying drawing, a kind of Raman spectrometer that detects high scattering medium of the present utility model is described in detail.
As shown in Figure 1, a kind of Raman spectrometer that detects high scattering medium of the present utility model, comprise laser instrument 1, along being disposed with collimation convex lens 2 on the output light path of described laser instrument 1, semi-transparent semi-reflecting spectroscope 3, Conical Lenses 4 and convergence convex lens 5, on the reflected light path of described semi-transparent semi-reflecting spectroscope 3, be provided with filter plate 6, receive the sub-ray spectrometer 8 of convex lens 7 and the reception light beam after filter plate 6 filtering convex lens 7 focus on, the output terminal of described sub-ray spectrometer 8 is connected with the array CCD detecting device 9 that the light beam after sub-ray spectrometer 8 light splitting is carried out to imaging acquisition Raman spectrum, wherein, the corresponding detected sample 10 of focus point of described convergence convex lens 5.
Described collimation convex lens 2 coaxially fixedly mount with described laser instrument 1, the axes intersect of the axis of described semi-transparent semi-reflecting spectroscope 3 and described collimation convex lens 2, and the axis angle of the axis of described semi-transparent semi-reflecting spectroscope 3 and described collimation convex lens 2 is 45 degree.Described Conical Lenses 4 and convergence convex lens 5 coaxially fixedly mount with described collimation convex lens 2, the axes intersect of the axis of described filter plate 6 and described collimation convex lens 2, axes intersect with described semi-transparent semi-reflecting spectroscope 3, described reception convex lens 7 coaxially fixedly mount with described filter plate 6, and the axis angle of the axis of described semi-transparent semi-reflecting spectroscope 3 and described filter plate 6 is 45 degree.
The position of described filter plate 6 can arrange flexibly, as long as its light beam that measured light can be sent is divided into different measurement wave bands.The axis of the axis of the filter plate 6 described in the present embodiment and described collimation convex lens 2 is for intersecting vertically.
The principle of work of a kind of Raman spectrometer that detects high scattering medium of the present utility model is as follows.
Laser instrument 1 produces laser beam 11, and laser beam 11 becomes collimated light beam through collimation convex lens 2, and collimated light beam is incident to Conical Lenses 4 after semi-transparent semi-reflecting spectroscope 3 light splitting.Collimated light beam becomes approximate zeroth order non-diffraction Bessel beam through Conical Lenses 4 from Gaussian beam.It shows as beam center hot spot light intensity and size without diffraction characteristic substantially remain unchanged in a certain limited propagation distance.In the time that the horizontal dimension of barrier is less than beamwidth, can return to original cross direction profiles, the self-reparability of Here it is Beams.Based on the above characteristic of bessel beam, bessel beam is applied in the testing process of high scatterer.Bessel beam focuses on detected sample 10 through assembling convex lens 5.Detected sample 10 is high scattering mediums, light beam runs into barrier and is scattered, due to the self-reparability of bessel beam, make light beam enter material inside, form the focal beam spot with certain depth at ideal position, and then increase the transmission depth of light beam in high scatterer, the while is due to the self-reparability of bessel beam, the Raman spectrum disperse producing is reduced, improve the accuracy detecting.
Be stimulated and produce Raman signal and Rayleigh signal at the laser beam at focus place, after being collected, reflected through Conical Lenses 4 along phase reflective road by semi-transparent semi-reflecting spectroscope 3 by convergent lens 5, after filter plate 6 filtering, in Raman signal, Rayleigh scattering light is by filtering.Filtered Raman signal focuses on sub-ray spectrometer 8, imaging on array CCD detecting device 9 after sub-ray spectrometer 8 light splitting through receiving convex lens 7.The Raman spectrum receiving has accurately disclosed the structure composition information of the high scatterer in certain depth of focus place.The position of filter plate 6 can arrange flexibly, as long as its light beam that measured light can be sent is divided into different measurement wave bands.
In a word, as long as structural principle is identical with the utility model, the simple substitute of notification technique, within all dropping on protection domain of the present utility model.
Claims (2)
1. one kind is detected the Raman spectrometer of high scattering medium, comprise laser instrument (1), it is characterized in that, along being disposed with collimation convex lens (2) on the output light path of described laser instrument (1), semi-transparent semi-reflecting spectroscope (3), Conical Lenses (4) and convergence convex lens (5), on the reflected light path of described semi-transparent semi-reflecting spectroscope (3), be disposed with filter plate (6), receive the sub-ray spectrometer (8) of convex lens (7) and the light beam of reception after filter plate (6) filtering convex lens (7) focus on, the output terminal of described sub-ray spectrometer (8) is connected with the array CCD detecting device (9) that the light beam after sub-ray spectrometer (8) light splitting is carried out to imaging, the corresponding detected sample (10) of focus point of described convergence convex lens (5).
2. a kind of Raman spectrometer that detects high scattering medium according to claim 1, it is characterized in that, described collimation convex lens (2) coaxially fixedly mount with described laser instrument (1), the axes intersect of the axis of described semi-transparent semi-reflecting spectroscope (3) and described collimation convex lens (2), described Conical Lenses (4) and convergence convex lens (5) coaxially fixedly mount with described collimation convex lens (2), the axes intersect of the axis of described filter plate (6) and described collimation convex lens (2), described reception convex lens (7) coaxially fixedly mount with described filter plate (6).
3. a kind of Raman spectrometer that detects high scattering medium according to claim 2, is characterized in that, the axis angle of the axis of described semi-transparent semi-reflecting spectroscope (3) and described collimation convex lens (2) is 45 degree.
4. a kind of Raman spectrometer that detects high scattering medium according to claim 2, is characterized in that, the axis angle of the axis of described semi-transparent semi-reflecting spectroscope (3) and described filter plate (6) is 45 degree.
5. a kind of Raman spectrometer that detects high scattering medium according to claim 1, is characterized in that, the intersect vertical axis of the axis of described collimation convex lens (2) and described filter plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320740301.9U CN203688070U (en) | 2013-11-20 | 2013-11-20 | Raman spectrometer detecting high scattering medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320740301.9U CN203688070U (en) | 2013-11-20 | 2013-11-20 | Raman spectrometer detecting high scattering medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203688070U true CN203688070U (en) | 2014-07-02 |
Family
ID=51009957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320740301.9U Withdrawn - After Issue CN203688070U (en) | 2013-11-20 | 2013-11-20 | Raman spectrometer detecting high scattering medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203688070U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604502A (en) * | 2013-11-20 | 2014-02-26 | 天津大学 | Raman spectrometer used for detecting high scattering medium |
| CN107014491A (en) * | 2017-05-27 | 2017-08-04 | 西安电子科技大学 | Spectral measurement system and method based on scattering principle |
| CN109346849A (en) * | 2018-09-06 | 2019-02-15 | 中国科学院国家空间科学中心 | A kind of device generating millimeter wave Bezier wave beam |
-
2013
- 2013-11-20 CN CN201320740301.9U patent/CN203688070U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604502A (en) * | 2013-11-20 | 2014-02-26 | 天津大学 | Raman spectrometer used for detecting high scattering medium |
| CN103604502B (en) * | 2013-11-20 | 2016-02-03 | 天津大学 | A kind of Raman spectrometer detecting high scattering material |
| CN107014491A (en) * | 2017-05-27 | 2017-08-04 | 西安电子科技大学 | Spectral measurement system and method based on scattering principle |
| CN107014491B (en) * | 2017-05-27 | 2018-04-10 | 西安电子科技大学 | Spectral measurement system and method based on scattering principle |
| CN109346849A (en) * | 2018-09-06 | 2019-02-15 | 中国科学院国家空间科学中心 | A kind of device generating millimeter wave Bezier wave beam |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103604502B (en) | A kind of Raman spectrometer detecting high scattering material | |
| CN103969239B (en) | A kind of point pupil laser differential confocal Raman spectra test method and device | |
| US20170018415A1 (en) | Divided-aperture laser differential confocal libs and raman spectrum-mass spectrum microscopic imaging method and device | |
| CN104949958B (en) | Novel Raman probe based on optical fiber beam splitter | |
| CN101290293B (en) | Differential confocal Raman spectra test method | |
| CN107192454B (en) | A kind of THz optical spectrum imagers based on three-dimensional phase grating and aperture segmentation technology | |
| CN101793678B (en) | Spectrum measuring device and method of scattering substance of sample cell with isosceles triangle cross section | |
| CN106568762A (en) | Scanning type laser induced spectrum surface range analysis and detection system | |
| CN104698068B (en) | High-spatial resolution laser biaxial differential confocal spectrum-mass spectrometry microimaging method and device | |
| CN105067569A (en) | Spectrophotometric pupil laser confocal LIBS (laser-induced breakdown spectroscopy), Raman spectrum and mass spectrum imaging method and device | |
| CN103439254A (en) | Spectroscopic pupil laser confocal Raman spectrum testing method and device | |
| CN104422681A (en) | Raman spectrometer | |
| CN103149158A (en) | Double-prism water quality monitoring optical fiber sensing system | |
| CN103487359A (en) | Full-automatic measuring device for form and distribution of laser excitated cells and particles | |
| CN103954593A (en) | Plasma signal acquisition device based on laser-induced-breakdown spectroscopy | |
| CN103940796A (en) | Novel multi-angle and multi-mode quick switching circular optical illumination microscopic imaging system | |
| CN103499392A (en) | TeraHertz-wave far-field detection super-diffraction resolution imaging instrument | |
| CN102636422A (en) | Nanoparticle solution concentration measuring device and measuring method thereof | |
| CN203688070U (en) | Raman spectrometer detecting high scattering medium | |
| CN105241850A (en) | Biaxial laser differential confocal LIBS, Raman spectrum-mass spectrum microscopic imaging method and Raman spectrum-mass spectrum microscopic imaging device | |
| CN106198490B (en) | Space offset Raman spectrum detection system | |
| CN104749162A (en) | Confocal Raman spectrometer and light path device thereof | |
| CN105181656A (en) | Laser differential confocal induced breakdown-Raman spectroscopy imaging detection method and laser differential confocal induced breakdown-Raman spectroscopy imaging detection apparatus | |
| CN104155279B (en) | Linear confocal ultraviolet Raman spectrometer | |
| CN105067570A (en) | Dual-axis laser differential confocal LIBS (laser-induced breakdown spectroscopy), RS (Raman spectroscopy) and MS (mass spectrometry) imaging method and device |
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: 20140702 Termination date: 20141120 |
|
| EXPY | Termination of patent right or utility model | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140702 Effective date of abandoning: 20160203 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |