CN208012760U - A kind of wide spectrum high-resolution spectroscopy dispersion means - Google Patents
A kind of wide spectrum high-resolution spectroscopy dispersion means Download PDFInfo
- Publication number
- CN208012760U CN208012760U CN201820358459.2U CN201820358459U CN208012760U CN 208012760 U CN208012760 U CN 208012760U CN 201820358459 U CN201820358459 U CN 201820358459U CN 208012760 U CN208012760 U CN 208012760U
- Authority
- CN
- China
- Prior art keywords
- dispersion
- module
- wide spectrum
- compensation module
- spectrum high
- 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.)
- Active
Links
Abstract
The utility model is related to color dispersion-type spectral technique fields, more particularly to a kind of wide spectrum high-resolution spectroscopy dispersion means.Device includes the first dispersion system, image slicer, the first concentration module, the second collimating module, the second dispersion system and the detector set gradually along light path；Point target introduces spectrometer system by optical fiber, by being divided into the first dispersion system after collimation, in image slicer planar imaging after convergence, it is reflected by image slicer by the cutting of different spectral coverage light and along different angle, convergence collimation, second is carried out into the second dispersion system to be divided, and is imaged on detector face.It can realize wide spectrum high-resolution spectra dispersion, be suitable for elemental analysis, astronomicalc optics signal detection, atmospheric wind, which tests the speed, waits numerous areas.
Description
Technical field
The utility model is related to color dispersion-type spectral technique fields, more particularly to a kind of wide spectrum high-resolution spectroscopy dispersion
Method and spectrometer.
Background technology
Spectral technique is suffered from multiple fields such as remote sensing, biochemistry, environmental protection, astronomy, agriculturals and is widely applied.For spectrum
For technology, core is that light splitting technology, current light splitting technology include mainly Dispersion Method light splitting, optical filter light splitting and interference
Method is divided.
Optical filter is a kind of beam splitter that new development is got up, and has simple in structure, small, light-weight, optical design
A variety of advantages such as simple, but optical filtering machining process is immature.Interference type spectral instrument technology maturation, and can be under wide spectrum
Obtain high spectral resolution.But high-resolution interference type spectral instrument is larger by light path impact volume, cannot achieve miniaturization and
Lightweight.Color dispersion-type spectrometer is current most widely used spectral technique.
Beam splitter wherein in color dispersion-type spectrometer includes mainly prism, grating or optical filter.Prism structure is simple, answers
With extensive, but volume and weight is larger, and dispersion is uneven；In contrast, grating is then small, light-weight, dispersive power quilt by force
It is widely used in spectral instrument；Optical filter light splitting is realized that wide spectrum high-resolution spectroscopy is very difficult by technology restriction, and at
This is high.
There are spectrum limitation problems caused by detector pixel number for high-resolution color dispersion-type spectrometer, generally use line
The method of detector splicing is realized using the method combination large area array detector of high-resolution echelon and prism crossed dispersion.
For the method for linear array detector splicing, achievable spectral region and spectral resolution are difficult to break away from the limitation of detector,
And volume is big, of high cost.And in the scheme of high-resolution echelon and prism crossed dispersion, high-resolution echelon cost compared with
The volume and weight of height, prism is big so that volume, weight, the cost of spectrometer are relatively high, and crossed dispersion can lead to spectrum
Spectral line bend, so as to cause various systematic errors, reduce the measuring precision.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides wide spectrum high-resolution spectroscopy dispersion dress
It sets.It solves wide spectrum high-resolution range to be limited and wide spectrum high resolution spectrometer body by detector row or column pixel
Product and big, of high cost etc. the problem of weight.
The utility model discloses a kind of wide spectrum high-resolution spectroscopy dispersion methods, include the following steps：
Step 1：After target light is collimated in dispersion to detector row pixel or row pixel direction；
Step 2：It is conplane by being reflexed to according to different spectral coverage along detector row pixel or the spectrum of row pixel dispersion
Different row or column positions；
Step 3：It will be carried out along detector row pixel or row pixel direction after the reflected beams convergence collimation in step 2 secondary
Dispersion, will be in the spectrum dispersion of different row or column to detector difference row or column.
Preferably, above-mentioned target is single or multiple point light sources.
Wide spectrum high-resolution spectroscopy dispersion means provided by the utility model, are characterized in that：Including along light path
The first dispersion system, image slicer, the first concentration module, the second collimating module, the second dispersion system and the detection set gradually
Device；
Above-mentioned first dispersion system includes the first collimating module and the first dispersion compensation module set gradually along light path；
Point target is extended to face directional light and is divided into the first dispersion compensation module by the first collimating module, the first dispersion mould
For block by face directional light along detector row pixel or row pixel orientational dispersion, dispersed light beam propagates to image slicer, and image slicer will
Dispersed light beam is cut, and so that different spectral coverage is reflected along different angle, reflection direction is perpendicular to the first dispersion compensation module dispersion direction；
First concentration module collimates after being converged the reflected beams of image slicer into the second collimating module, obtains different spectrums
The collimated light beam of section；The collimated light beam of different spectral coverage enters the second dispersion system, and the second dispersion system is by directional light along detector
Row pixel or row pixel direction carry out secondary dispersion, will not go together to detector positioned at the spectrum dispersion of different row or column or
On person's row.
Preferably, further include converging lenses between the first dispersion compensation module and image slicer, above-mentioned converging lenses are used for first
The light beam of dispersion compensation module is converged according to different spectral coverage.
Preferably, above-mentioned second dispersion system may include the second dispersion compensation module and the second optically focused set gradually along light path
Module；Directional light is carried out secondary dispersion along detector row pixel or row pixel direction and enters the second optically focused mould by the second dispersion compensation module
After block convergence, each spectral coverage is obtained in detector difference row or column.
Preferably, above-mentioned second dispersion system can also be curved surface grating.
Preferably, the first dispersion compensation module and the second dispersion compensation module are grating or prism, can also use other one-dimensional dispersions
Element replaces, and the resolution ratio of the second dispersion compensation module is more than the resolution ratio of the first dispersion compensation module.
Preferably, above-mentioned first concentration module is convex lens or convex lens group, and the incident parallel light of different angle is converged
Gather in different spatial.
Preferably, above-mentioned second collimating module is micro lens group, and the light of different spectral coverage is collimated.
Compared with prior art, the utility model has the beneficial effects that：
1, the utility model can realize the spectral dispersion ability of more wide spectrum and higher resolution；
When grating is to target optical spectrum dispersion, in the case where detector row or column pixel number determines, spectral resolution and
Spectral dispersion range is inversely proportional, and cannot achieve high-resolution wide spectrum spectral measurement.Method used by the utility model is first
By grating or prism by target dispersion to detector row pixel, then will be along the spectral reflectance of row dispersion by image slice device
To Different Plane position so that different spectral coverage is arranged in detector difference row or column, then passes through high-resolution dispersion element
Narrow-band spectrum to being generally aligned in the same plane different row or column carries out secondary dispersion along the direction of row or column, obtains wide spectrum high-resolution
Rate optic spectrum line.
2, for the utility model during wide spectrum dispersion, dispersion direction is consistent twice, caused by avoiding crossed dispersion
The phenomenon that curve of spectrum is bent, so as to avoid the spectrographic detection error that Spectral line bend is brought, improves the resolution ratio of spectro-metre,
And the design scheme reduces later data intractability and complexity.
3, the utility model is spliced in spectrum widening without detector, can be achieved with using one piece of detector wider
The spectral dispersion of spectral coverage, therefore, Optical System Design can realize miniaturization and lightweight.
4, the utility model does not use echelon and prism crossed dispersion scheme, optics in spectrum high resolution dispersion
Prism is not used in system, can reduce system bulk and weight, and image slice device is reflection device, reflected light path can
Keep optical system compacter.
5, the utility model spectrum widening and dispersion are dodged without high dispersion ladder grating using common high-resolution
Credit grating can be achieved with high-precision dispersion, realize that difficulty is smaller in engineering, advantage of lower cost.
Description of the drawings
Fig. 1 is the utility model one embodiment schematic device；
Fig. 2 is the second dispersion system schematic diagram；
Reference numeral is in figure：The first collimating modules of 1-, the first dispersion compensation modules of 2-, 3- image slicers, 4- the first optically focused moulds
Block, the second collimating modules of 5-, the second dispersion systems of 6-；The second dispersion compensation modules of 61-, the second concentration modules of 62-, 7- converging lenses.
Specific implementation mode
The utility model is described further below in conjunction with drawings and the specific embodiments.
The utility model wide spectrum high-resolution spectroscopy Dispersive is mainly used for elemental analysis, astronomy with spectrometer
Optical signalling detection, atomic energy level detection etc. are in numerous areas.First, by target dispersion to detector row pixel or row pixel side
Upwards；Secondly, dispersion image planes are cut using image slice device, and reflex to same plane different location；Again,
The reflected beams are converged and carry out secondary dispersion along detector row pixel or row pixel direction after collimating, since incident angle is different,
Different spectral coverage light is concentrated in different location, is carried out along a dispersion direction after colimated light system, then by high Dispersive Devices
Secondary dispersion, will be in entire spectral coverage dispersion to detector difference row or column.On the one hand wide spectrum is solved in high-resolution color
The problem of being limited by detector in the case of dissipating, another aspect system structure is compact, no complex devices, can realize miniaturization, gently
Quantization, low cost.
Dispersion can be realized in the embodiment by device shown in FIG. 1, can be seen that from Fig. 1 and Fig. 2
It is poly- it to be disposed with the first collimating module 1, the first dispersion compensation module 2, converging lenses 7, image slicer 3, first along light path
Optical module 4, the second collimating module 5, the second dispersion system 6 and detector；
The second dispersion system 6 includes the second dispersion compensation module 61 and the second optically focused set gradually along light path in this embodiment
Module 62 can also be replaced directly with curved surface grating；First dispersion compensation module 2 and the second dispersion compensation module 61 are grating, can also
With prism or other replaced with one-dimensional dispersion element；Converging lenses 7 converge the light beam of the first dispersion compensation module according to different spectral coverage
It is poly-；Image slicer 3 is a kind of micro- step mirror array, is made of the different plane mirror of angle, its main feature is that by line or
Face is split, and is then reflected along different angle；First concentration module 4 converges in the incident parallel light of different angle not
Isospace position, the equivalent optically focused light path of convex lens；Second collimating module 5 is cylindrical mirror or path-splitting micro lens；Second color
The resolution ratio for dissipating module 61 represents spectrometer true resolution, and second of dispersion is consistent with first time dispersion direction.
Specific dispersion process is as follows：
1), wherein target is single or multiple point light sources, is imaged on focal plane by object lens, will by optical fiber or object lens
Target introduces the first collimating module 1, and then point target is extended to face directional light and is divided into the first dispersion compensation module 2.Pass through
First dispersion compensation module 2 will input directional light along detector row pixel or row pixel orientational dispersion, and dispersed light beam propagates to converging lenses
7, image slicer 3 is entered after being converged according to different spectral coverage to the light beam of the first dispersion compensation module.
2), target dispersion spectral line is cut by image slicer 3, and different spectral coverage is made to be reflected along different angle, instead
Penetrate dispersion direction of the direction perpendicular to the first dispersion compensation module 2.
3) it, is converged by the light that the first concentration module 4 reflects image slicer 3, since 3 each ladder of image slicer is anti-
The angle for penetrating spectral coverage light is different, and different ladders correspond to wave band and are compressed in same plane different location (a1, a2 in such as Fig. 1
And a3), light beam enters the second collimating module 5 after compression.
4), compressed each spectral coverage is collimated by the second collimating module 5, and passes through high-resolution the second dispersion mould
Block carries out secondary dispersion, and dispersion direction and a dispersion direction are consistent, then will be positioned at the spectrum of different row or column by converging lenses
In spectral coverage dispersion to detector difference row or column.
Claims (7)
1. a kind of wide spectrum high-resolution spectroscopy dispersion means, it is characterised in that：It include the first dispersion set gradually along light path
System, image slicer, the first concentration module, the second collimating module, the second dispersion system and detector；
First dispersion system includes the first collimating module and the first dispersion compensation module set gradually along light path；
Point target is extended to face directional light and is divided into the first dispersion compensation module by the first collimating module, and the first dispersion compensation module will
For face directional light along detector row pixel or row pixel orientational dispersion, dispersed light beam propagates to image slicer, and image slicer is by dispersion
Light beam is cut, and so that different spectral coverage is reflected along different angle, reflection direction is perpendicular to the first dispersion compensation module dispersion direction；First
Concentration module collimates after being converged the reflected beams of image slicer into the second collimating module, obtains different spectral coverage
Collimated light beam；The collimated light beam of different spectral coverage enters the second dispersion system, and the second dispersion system is by directional light along detector row picture
Member or row pixel direction carry out secondary dispersion, will be positioned at the spectrum dispersion of different row or column to detector difference row or column
On.
2. wide spectrum high-resolution spectroscopy dispersion means according to claim 1, it is characterised in that：In the first dispersion compensation module
Further include converging lenses between image slicer, the converging lenses are for carrying out the light beam of the first dispersion compensation module according to different spectral coverage
Convergence.
3. wide spectrum high-resolution spectroscopy dispersion means according to claim 2, it is characterised in that：
Second dispersion system includes the second dispersion compensation module and the second concentration module set gradually along light path；Second dispersion mould
Block after detector row pixel or row pixel direction progress secondary dispersion enter the convergence of the second concentration module, is detecting directional light
Each spectral coverage is obtained in device difference row or column.
4. wide spectrum high-resolution spectroscopy dispersion means according to claim 2, it is characterised in that：
Second dispersion system is curved surface grating.
5. wide spectrum high-resolution spectroscopy dispersion means according to claim 3, it is characterised in that：First dispersion compensation module with
Second dispersion compensation module is grating or prism, and the dispersive power of the second dispersion compensation module is more than the dispersive power of the first dispersion compensation module.
6. according to any wide spectrum high-resolution spectroscopy dispersion means of claim 1-5, it is characterised in that：Described first
Concentration module is convex lens or convex lens group.
7. wide spectrum high-resolution spectroscopy dispersion means according to claim 6, it is characterised in that：The second collimation mould
Block is micro lens group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820358459.2U CN208012760U (en) | 2018-03-15 | 2018-03-15 | A kind of wide spectrum high-resolution spectroscopy dispersion means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820358459.2U CN208012760U (en) | 2018-03-15 | 2018-03-15 | A kind of wide spectrum high-resolution spectroscopy dispersion means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208012760U true CN208012760U (en) | 2018-10-26 |
Family
ID=63888893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820358459.2U Active CN208012760U (en) | 2018-03-15 | 2018-03-15 | A kind of wide spectrum high-resolution spectroscopy dispersion means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208012760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220113192A1 (en) * | 2020-10-13 | 2022-04-14 | Abb Schweiz Ag | Technologies for high resolution and wide swath spectrometer |
-
2018
- 2018-03-15 CN CN201820358459.2U patent/CN208012760U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220113192A1 (en) * | 2020-10-13 | 2022-04-14 | Abb Schweiz Ag | Technologies for high resolution and wide swath spectrometer |
| US11307097B1 (en) * | 2020-10-13 | 2022-04-19 | Abb Schweiz Ag | Technologies for high resolution and wide swath spectrometer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3052907B1 (en) | Monolithic spectrometer | |
| US8184285B2 (en) | Method and apparatus using volume holographic wavelength blockers | |
| CN104062007B (en) | Mobile phone spectrometer module and there is the mobile phone spectrometer of this mobile phone spectrometer module | |
| Harris et al. | Photonic spatial reformatting of stellar light for diffraction-limited spectroscopy | |
| CN101571421B (en) | Hadamard transform imaging spectrometer | |
| US9939320B2 (en) | Curved grating spectrometer and wavelength multiplexer or demultiplexer with very high wavelength resolution | |
| CN103471717B (en) | Based on the super-resolution spectrograph of many slit array | |
| EP0713112A1 (en) | Optical emitting and receiving device with a surface emitting laser | |
| CN110501289B (en) | Spectrum broadening method and device based on digital micromirror array (DMD) | |
| CN106017673A (en) | MEMS-scanning-micromirror-based double-pass grating monochrometer optical path structure | |
| US20230144290A1 (en) | Device and method for measuring wavelength for laser device | |
| US9612155B2 (en) | Curved grating spectrometer and wavelength multiplexer or demultiplexer with very high wavelength resolution | |
| CN108362379A (en) | A kind of wide spectrum high-resolution spectroscopy dispersion method and device | |
| CN100582750C (en) | Device for the IR-spectrometric analysis of a solid, liquid or gaseous medium | |
| CN208012760U (en) | A kind of wide spectrum high-resolution spectroscopy dispersion means | |
| CN103616074B (en) | Wavelength calibration method for digital micromirror grating spectrometer | |
| CN105486406A (en) | Spectrometer and spectral analysis method | |
| CN106940291B (en) | High-resolution double-grating monochromator light path device | |
| CN108507679A (en) | A kind of wide spectrum high-resolution spectra interferometric method and device | |
| CN103900693A (en) | Difference snapshooting type imaging spectrometer and imaging method | |
| CN110118602B (en) | Device for simultaneously acquiring broadband high-resolution spectral imaging information | |
| CN106918393A (en) | A kind of binary channels space heterodyne spectrograph | |
| CN108225559A (en) | The optical fiber grating regulating system of spectral resolution is improved using fine motion grating | |
| Kern et al. | Planar Integrated Optics and astronomical interferometry | |
| DE3730257A1 (en) | MEASURING DEVICE FOR SPECTRAL CHARACTERISTICS OF A LASER RADIATION |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |