CN206696182U - Portable near ultraviolet Raman spectroscopy system with deielectric-coating and anti-reflection film - Google Patents
Portable near ultraviolet Raman spectroscopy system with deielectric-coating and anti-reflection film Download PDFInfo
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- CN206696182U CN206696182U CN201720465497.3U CN201720465497U CN206696182U CN 206696182 U CN206696182 U CN 206696182U CN 201720465497 U CN201720465497 U CN 201720465497U CN 206696182 U CN206696182 U CN 206696182U
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Abstract
A kind of Raman spectrometer is the utility model is related to, more particularly, to a kind of portable near ultraviolet Raman spectroscopy system with deielectric-coating and anti-reflection film.Its Raman spectrometer for mainly solving present in prior art is mostly confocal microscope structure, equipment instrument is big, use near-infrared, visible ray and near ultraviolet laser more, be so not only easily damaged retina, and the technical problem easily influenceed etc. by ambient light, fluorescence in the application.The utility model includes long-focal length lens, the inner side of long-focal length lens is provided with beam splitter, the quartz glass center of beam splitter is coated with the deielectric-coating of reflection 248nm laser, remainder scribbles anti-reflection film, the reflecting surface of beam splitter is provided with speculum, the inner side of speculum is provided with laser, the inner side of long-focal length lens is provided with long pass filter, the reflecting surface of long pass filter is provided with laser narrow-band optical filter, the first focus lamp, laser imaging CCD, laser imaging CCD is connected with computer, the inner side of long pass filter is provided with the second focus lamp, monochromator, monochromator connection computer.
Description
Technical field
A kind of Raman spectrometer is the utility model is related to, more particularly, to a kind of portable with deielectric-coating and anti-reflection film
Near ultraviolet Raman spectroscopy system.
Background technology
Safety guarantor in terms of the fields such as the today's society energy, environment, manufacturing industry, food security, biological medicine, public safety
Hinder particularly important, spectral instrument is as a kind of widely used non-contact detection method, in terms of above-mentioned field safety guarantee
Play important application.More effective more reliably detection can be carried out to material and is identified, is that field research staff pays close attention to
Hot technology, and ensure the most important thing of national safety.
There are Atomic Emission Spectrometer AES, Raman spectrometer, infrared absorption spectrometer, fluorescence using more spectral instrument at present
Spectrometer and Terahertz equipment.Raman spectroscopy has abundant information, resolution ratio as a kind of method for detecting material composition
It is high, minute is short, amount of samples is few, the not remarkable advantage such as contact measurement, compared to other spectral techniques, Raman spectrum can carry
For the resolution ratio of more sharp characteristic peak and Geng Gao, food safety check, drug law enforcement, pharmacy, steel-making, oil, chemical industry, mine locating,
Many fields such as environmental protection, biology, airport/bus stop/train safety check, explosive detection are widely used.
Raman spectroscopy development has progressively tended to be ripe, and the Raman spectrometer is mostly confocal microscope structure at present, instrument
Body product is big, more using near-infrared, visible ray and near ultraviolet laser, is so not only easily damaged retina, and easy in the application
Influenceed by ambient light/fluorescence, in addition, sensitivity is low, using process is more complicated, application field is limited.
Utility model content
The utility model is to provide a kind of portable near ultraviolet Raman spectroscopy system with deielectric-coating and anti-reflection film, its
The Raman spectrometer mainly solved present in prior art is mostly confocal microscope structure, and equipment instrument is big, more using near red
Outside, visible ray and near ultraviolet laser, retina is so not only easily damaged, and is easily influenceed in the application by ambient light, fluorescence
Technical problem.
Above-mentioned technical problem of the present utility model is mainly what is be addressed by following technical proposals：
Portable near ultraviolet Raman spectroscopy system of the present utility model with deielectric-coating and anti-reflection film, including long-focus
Object lens, the inner side of described long-focal length lens are provided with beam splitter, and the quartz glass center of beam splitter is coated with reflection 248nm laser
Deielectric-coating, remainder scribble anti-reflection film, and the reflecting surface of beam splitter is provided with speculum, and the inner side of speculum is provided with laser, long
The inner side of focal length objective lens is provided with long pass filter, the reflecting surface of long pass filter be provided with laser narrow-band optical filter, the first focus lamp,
Laser imaging CCD, laser imaging CCD are connected with computer, and the inner side of long pass filter is provided with the second focus lamp, monochromator, single
Color instrument connects computer.The utility model is using the higher near ultraviolet laser of excitation energy as light source, the less Raman light of F numbers
Spectrometer system is embodied in improving above mentioned problem：When system is operated in day-old chick, ambient light interference is avoided, can be realized existing
Field analysis；At ultra-violet (UV) band, Raman spectrum separates with fluorescence spectrum, increases signal to noise ratio；There are ultraviolet resonance or pre- resonance effects, can
Greatly enhance Raman signal；High light flux designs, and can improve system sensitivity, makes it possible that scene is detected in real time.In this base
On plinth, establish thing mass spectral database and propose corresponding algorithm and identification software.Long-focal length lens：To realize non-contact detecting, this knot
Structure uses long-focal length lens, increases the distance of instrument and sample room.The big I of focal length changes according to concrete application.Long logical optical filtering
The effect of piece is by the light more than corresponding wavelength, reflects other light.Its effect is to make Raman light and laser in the present system
Separate and enter respective channel.Computer includes the electromechanical construction module of exploitation, and developing electromechanical construction module includes laser control
Molding block, receive photo structure, interior light path detection module, laser imaging module and Raman spectrum detection module etc..Wherein, mechanical structure
Part designs special ray machine part by Optics trace and carries out surface blackening processing, it is necessary to high-precision precise machining process
Contain veiling glare.Control circuit in computer includes drive circuit, spectrum storehouse is shown, WeChat ID is handled, is gathered etc..According to instrument
Use environment requirement, when choosing electronic component and carrying out circuit exploitation, carry out high/low temperature, vibration, humidity, electromagnetism interference
Deng design and test, to improve the reliability of instrument.Beam splitter is in order that whole light of laser emitting are reflexed on sample
Make Raman diffused light and the laser of reflection by beam splitter Raman diffused light can be made all by beam splitter, to make reflection simultaneously
Laser largely pass through.By plating deielectric-coating and anti-reflection film in quartz glass, 100% laser can be reflected to sample, so that production
Raw Raman scattering 100% is by beam splitter, and the laser 99% reflected passes through beam splitter.It can obtain Raman spectrum and laser shine
The accurate location of exit point and optical axis, it is easy to ray machine dress school.
Preferably, laser shaping lens group is provided between described speculum and laser.Laser of the present utility model
Light source has long-focal length lens focusing illumination to sample again by laser shaping lens group shaping through speculum and beam splitter reflection
On；Caused Raman diffused light and reflection laser respectively enter corresponding passage, obtain laser imaging and Raman in a computer
Spectrogram.Laser shaping lens group of the present utility model：The laser of laser emitting is generally the non-circular shaped beams dissipated, adds
Laser shaping lens group can be corrected to its collimation and shape.
Preferably, described long pass filter includes the long pass filter of first be obliquely installed and vertically disposed the
Two long pass filters.The laser and Raman light of reflection are included by the light of beam splitter.Corresponding optical maser wavelength is placed after beam splitter
Long pass filter, effect be reflection laser and through wavelength be more than laser Raman light, connect using the CCD for laser imaging
This fraction of laser light is received, Raman diffused light is received and is imaged using monochromator after this long pass filter.
Preferably, being provided with adjusting nut at described speculum, adjusting nut is connected in the adjustment seat of crescent, is adjusted
Section seat is fixed in the mounting seat of " several " font.The angle of speculum can be adjusted by turn adjusting nut, is so collected
Data it is more accurate.
Therefore, the utility model is short based on Ultra-Violet Laser wavelength and the characteristics of resonance effects be present, using small F numbers optical system
System and its optical component increase luminous flux matched with slit, make system sensitivity at least improve an order of magnitude, using focal length
Detecting distance can be increased away from object lens, simultaneously because the characteristics of Ultra-Violet Laser is not influenceed by sunlight, fluorescence, the scene of realization does not sample non-
Contact, not shield detection, the dual channel system, can laser imaging, be easy to system dress school, reduce technology difficulty, can carry significantly
The reliability of the high product simultaneously reduces production cost；And can Raman quickly measures material composition into spectrum.
Brief description of the drawings
Accompanying drawing 1 is a kind of decomposition texture schematic diagram of the present utility model；
Accompanying drawing 2 is a kind of structural representation of beam splitter of the present utility model；
Accompanying drawing 3 is a kind of structural representation of the present utility model.
Parts, position and numbering in figure：Long-focal length lens 1, beam splitter 2, speculum 3, laser shaping lens group 4, swash
Light device 5, laser narrow-band optical filter 6, the first focus lamp 7, laser imaging CCD8, computer 9, the second focus lamp 10, monochromator 11,
Deielectric-coating 12, anti-reflection film 13, the first long pass filter 14, the second long pass filter 15, sample 16, adjusting nut 17, adjustment seat
18th, mounting seat 19.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
Embodiment：The portable near ultraviolet Raman spectroscopy system with deielectric-coating and anti-reflection film of this example, such as Fig. 1, figure
3, including long-focal length lens 1, the inner side of long-focal length lens be provided with beam splitter 2, such as Fig. 2, the quartz glass center of beam splitter is coated with
The deielectric-coating 12 of 248nm laser is reflected, remainder scribbles anti-reflection film 13, and the reflecting surface of beam splitter is provided with speculum 3, speculum
Inner side be provided with laser shaping lens group 4, laser 5, the inner side of long-focal length lens is provided with long pass filter, and described length is logical to filter
Mating plate includes the long pass filter 14 of first be obliquely installed and the vertically disposed second long pass filter 15.Long pass filter
Reflecting surface is connected with computer 9 provided with laser narrow-band optical filter 6, focus lamp 7, laser imaging CCD8, laser imaging CCD, long logical
The inner side of optical filter is provided with focus lamp 10, monochromator 11, monochromator connection computer.Adjusting nut 17 is provided with speculum 3, is adjusted
Section nut is connected in the adjustment seat 18 of crescent, and adjustment seat is fixed in the mounting seat 19 of " several " font.
In use, LASER Light Source is reflected again by focal length by the shaping of laser shaping lens group 4 through speculum 3 and beam splitter 2
Away from the focusing illumination of object lens 1 to sample 16；Caused Raman diffused light passes through the second focus lamp 10, monochromator 11 in a computer
Obtain Raman spectrogram, caused reflection laser by laser narrow-band optical filter 6, the first focus lamp 7, laser imaging CCD8,
Laser imaging is obtained in computer.
Specific embodiment of the utility model is the foregoing is only, but architectural feature of the present utility model is not limited to
This, any those skilled in the art in field of the present utility model, all cover in this practicality newly by the change or modification made
Among the scope of the claims of type.
Claims (4)
1. a kind of portable near ultraviolet Raman spectroscopy system with deielectric-coating and anti-reflection film, including long-focal length lens（1）, its
It is characterised by described long-focal length lens（1）Inner side be provided with beam splitter（2）, beam splitter（2）Quartz glass center be coated with instead
Penetrate the deielectric-coating of 248nm laser（12）, remainder scribbles anti-reflection film（13）, the reflecting surface of beam splitter is provided with speculum（3）, instead
The inner side for penetrating mirror is provided with laser（5）, the inner side of long-focal length lens is provided with long pass filter, and the reflecting surface of long pass filter is provided with
Laser narrow-band optical filter（6）, the first focus lamp（7）, laser imaging CCD（8）, laser imaging CCD is connected with computer（9）, it is long
The inner side of pass filter is provided with the second focus lamp（10）, monochromator（11）, monochromator connection computer.
2. the portable near ultraviolet Raman spectroscopy system according to claim 1 with deielectric-coating and anti-reflection film, it is special
Sign is described speculum（3）With laser（5）Between be provided with laser shaping lens group（4）.
3. the portable near ultraviolet Raman spectroscopy system according to claim 1 with deielectric-coating and anti-reflection film, it is special
Sign is that described long pass filter includes the long pass filter of first be obliquely installed（14）It is logical with the vertically disposed second length
Optical filter（15）.
4. the portable near ultraviolet Raman spectroscopy system according to claim 1 with deielectric-coating and anti-reflection film, it is special
Sign is described speculum（3）Place is provided with adjusting nut（17）, adjusting nut is connected to the adjustment seat of crescent（18）On, adjust
Section seat is fixed on the mounting seat of " several " font（19）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720465497.3U CN206696182U (en) | 2017-04-28 | 2017-04-28 | Portable near ultraviolet Raman spectroscopy system with deielectric-coating and anti-reflection film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720465497.3U CN206696182U (en) | 2017-04-28 | 2017-04-28 | Portable near ultraviolet Raman spectroscopy system with deielectric-coating and anti-reflection film |
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| CN206696182U true CN206696182U (en) | 2017-12-01 |
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| CN201720465497.3U Active CN206696182U (en) | 2017-04-28 | 2017-04-28 | Portable near ultraviolet Raman spectroscopy system with deielectric-coating and anti-reflection film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020320A (en) * | 2017-12-26 | 2018-05-11 | 同方威视技术股份有限公司 | Raman spectrum detection device and method based on image recognition |
-
2017
- 2017-04-28 CN CN201720465497.3U patent/CN206696182U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020320A (en) * | 2017-12-26 | 2018-05-11 | 同方威视技术股份有限公司 | Raman spectrum detection device and method based on image recognition |
| CN108020320B (en) * | 2017-12-26 | 2023-08-29 | 同方威视技术股份有限公司 | Raman spectrum detection equipment and method based on image recognition |
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