CN207662517U - A kind of full spectrum high-resolution multimode scanning monochromatic system - Google Patents
A kind of full spectrum high-resolution multimode scanning monochromatic system Download PDFInfo
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- CN207662517U CN207662517U CN201721783860.2U CN201721783860U CN207662517U CN 207662517 U CN207662517 U CN 207662517U CN 201721783860 U CN201721783860 U CN 201721783860U CN 207662517 U CN207662517 U CN 207662517U
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- diffraction grating
- entrance slit
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- dispersing prism
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Abstract
The utility model provides a kind of full spectrum high-resolution multimode scanning monochromatic system, including entrance slit, collimator objective, dispersing prism, diffraction grating, image-forming objective lens, receive scanning means, driving mechanism, condenser and single-geophone receiver device, wherein entrance slit is placed in the focal point of collimator objective, and entrance slit, collimator objective, diffraction grating, dispersing prism, image-forming objective lens, condenser and single-geophone receiver device center line are located in same horizontal line, and keep determining distance and angle between each other；Light beam is converged to by associated op-tics by the light beam of entrance slit and is received on scanning means, and monochromatic spectrum is completed by driving mechanism and is received.Compared with prior art, same main body light channel structure can realize different types of scanning reception mode to the utility model, and the cost of full spectrum monochromatic system can be substantially reduced especially with digital micromirror technologies, while improve monochromatic system stability.
Description
Technical field
The utility model belongs to optical technical field, and in particular to a kind of full spectrum high-resolution multimode scanning monochromatic system.
Background technology
Widely used spectrometer currently on the market, optical system are largely all based on Rowland circle or Czerny-
Turner type structures, in the Optical System Design based on Rowland circle structure, in order to obtain high spectral resolution, often through
Using the longer concave grating of focal length, while increasing grating line number to improve resolution ratio, and in the anaberration of optimization structure
Also can only be high to obtain by increasing grating line number under conditions of focal length is certain in Czerny-Turner optical systems
Spectral resolution, this not only adds the delineation difficulty of grating, expand the volume of instrument, and groove number is also impossible to nothing
Limitation improves, and the cost that result directly results in spectral instrument is significantly increased.Technology in recent years breaks away from setting for traditional raster
Thinking is counted, obtains high diffracting grade time from the increase angle of diffraction to improve the angle of spectral resolution, passing through reduces grating ruling
Number and incident two aspect of angle of diffraction of increase are started with, and middle ladder light is developed into using the method that short side slot provides high diffracting grade time
Grid, this grating line number is less, and the spectrum level used is high, has big dispersive power, high-resolution, and spectral region is wide to dash forward
Go out advantage.In order to eliminate the overlapping of spectrum level, crossed dispersion is realized by matching unification low dispersion grid or prism, it can be effective
It solves to be overlapped between spectrum level, to which one-dimensional spectrum is become two-dimension spectrum.It is different from traditional Rowland circle and Czerny-
Turner spectrometer optical systems, the spectrometer based on echelle grating can easily obtain high under same imaging focal length
Spectral resolution, outstanding advantages are that incisure density is small, and convenient for ensureing precision, light path fixes, full spectrum imaging, and high dispersion is high
Resolution ratio, wide spectral range, interference spectrum overlapping is weak, and light room is small, and imaging area is small.
Current two-dimensional spectrometer causes cost very high, to realize in addition higher due to using large area area array CCD structure
It is clever according to self-demand to be not easy to user in specific application with limited CCD photosurfaces there are certain contradiction for resolution ratio
It is living that corresponding wave band or the higher resolution ratio of selection is selected to operate.
Invention content
The purpose of this utility model is to provide a kind of full spectrum high-resolution multimode scanning monochromatic system, simple in structure, portion
Part is replaceable, easy to use.
In order to achieve the above object, the technical solution of the utility model is as follows：
A kind of full spectrum high-resolution multimode scanning monochromatic system, including：
Entrance slit, dispersing prism, diffraction grating, image-forming objective lens, receives scanning means, driving mechanism, gathers collimator objective
Light microscopic and single-geophone receiver device, the entrance slit are placed in the focal point of collimator objective, the entrance slit, collimator objective, color
It dissipates prism, diffraction grating, image-forming objective lens, condenser and single-geophone receiver device center line to be located in same horizontal line, and between each other
Keep determining distance and angle；Become directional light directive dispersion rib after collimator objective collimates by the light beam of entrance slit
Then mirror reaches diffraction grating, be diffracted the light beam after optical grating diffraction again by image-forming objective lens are reached after dispersing prism, be imaged
Light beam is converged to and is received on scanning means by object lens, and is completed monochromatic spectrum by driving mechanism and received；When using single-geophone receiver
When mode, light path converting and spectrum will be completed by the driving structure, reception scanning means, condenser and single-geophone receiver device
It receives.
In full spectrum high-resolution multimode scanning monochromatic system provided by the utility model, there can also be such spy
Sign：
There are two types of mounting means, one so that incident beam is first passed through color for the relative position of dispersing prism and diffraction grating
Prism transverse direction dispersion is dissipated, vertical direction dispersion is then carried out by diffraction grating again, crossed dispersion is formed and composes face；Second, can make
Incident beam first passes through dispersing prism transverse direction dispersion, then carries out secondary lateral dispersion by diffraction grating again, forms one-dimensional dispersion
Linear array composes face.
In full spectrum high-resolution multimode scanning monochromatic system provided by the utility model, there can also be such spy
Sign：
It is serial, saturating including but not limited to one dimensional linear array receiver, two-dimensional array receiver, digital micro-mirror to receive scanning means
The photelectric receivers such as reflecting element or optical element.
In full spectrum high-resolution multimode scanning monochromatic system provided by the utility model, there can also be such spy
Sign：
One dimensional linear array receiver carries out three-dimensional machinery movement by the driving mechanism, can complete the coke in horizontal plane direction
Point location, the spectral scan detection laterally and longitudinally moved in perpendicular.
In full spectrum high-resolution multimode scanning monochromatic system provided by the utility model, there can also be such spy
Sign：
Two-dimensional array receiver may be used that relative position is fixed and mechanical three-dimensional moves two ways, when needing to transport
When dynamic, three-dimensional machinery movement is carried out by the driving mechanism, the focus that can complete horizontal plane direction positions, in perpendicular
The spectral scan detection laterally and longitudinally moved.
In full spectrum high-resolution multimode scanning monochromatic system provided by the utility model, there can also be such spy
Sign：
Digital micro-mirror includes but not limited to digital micro-mirror（DMD）The micro mirror arrays such as spatial light modulator, adaptive distorting lens.
In full spectrum high-resolution multimode scanning monochromatic system provided by the utility model, there can also be such spy
Sign：
Transflector element includes but not limited to spherical reflector, non-spherical reflector, semi-transparent semi-reflecting lens, partially reflecting mirror etc.
Optical element.
In full spectrum high-resolution multimode scanning monochromatic system provided by the utility model, there can also be such spy
Sign：
Convergent mirror includes but not limited to the optics such as various spherical surfaces or non-spherical lens, spherical reflector, non-spherical reflector
Element.
Invention effect
According to a kind of full spectrum high-resolution multimode scanning monochromatic system provided by the utility model, including entrance slit, standard
Straight object lens, diffraction grating, image-forming objective lens, receive scanning means, driving mechanism, condenser and single-geophone receiver device at dispersing prism,
Wherein entrance slit is placed in the focal point of collimator objective, and entrance slit, collimator objective, diffraction grating, dispersing prism, imaging
Object lens, condenser and single-geophone receiver device center line are located in same horizontal line, and keep determining distance and angle between each other；
Become directional light directive dispersing prism after collimator objective collimates by the light beam of entrance slit, then reach diffraction grating,
It is diffracted the light beam after optical grating diffraction and light beam is converged into reception again by image-forming objective lens, image-forming objective lens are reached after dispersing prism
On scanning means, and monochromatic spectrum is completed by driving mechanism and is received；When using single-geophone receiver mode, it will be tied by driving
Structure receives scanning means, condenser and single-geophone receiver device completion light path converting and spectrum acquisition.The utility model can be same
Kind of main body light channel structure can realize different types of scanning reception mode, can according to specific application range, allow user according to
Self-demand flexibly selects corresponding wave band or the higher resolution ratio of selection to operate.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this
Some embodiments of utility model, for those of ordinary skill in the art, under the premise of not making the creative labor party, also
It can be obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of device signal of full spectrum high-resolution multimode scanning monochromatic system in the embodiments of the present invention
Figure.
Fig. 2 is the composed structure schematic diagram that scanning means is received in the embodiments of the present invention.
Specific implementation mode
It is understandable in order to enable the above objects, features, and advantages of the utility model to become apparent, below in conjunction with this reality
With the attached drawing in new embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that
The described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.Based on the utility model
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Attached drawing 1 is please referred to, the full spectrum high-resolution of one kind that Fig. 1 is provided by a kind of specific implementation mode of the utility model is multi-party
Formula scans the schematic device of monochromatic system.As shown in Figure 1, the utility model discloses a kind of full spectrum high-resolution multimode scannings
Monochromatic system, the system specifically include：
Entrance slit 1, dispersing prism 3, diffraction grating 4, image-forming objective lens 5, receives scanning means 6, driving at collimator objective 2
Mechanism 7, condenser 8 and single-geophone receiver device 9, the entrance slit 1 are placed in the focal point of collimator objective 2, due to using off-axis
Design, the focus physical location have certain relationship with off-axis angle, and knife-edge method, which may be used, when installing the device is adjusted；Institute
State entrance slit 1, collimator objective 2, dispersing prism 3, diffraction grating 4,9 center of image-forming objective lens 5, condenser 8 and single-geophone receiver device
Line is located in same horizontal line, needs to ensure that optical path Center is in approximately the same plane always, and each optical element is mutual
Determining distance and angle are kept, to realize the effect of best resolution ratio；Pass through collimator objective by the light beam of entrance slit 1
Become directional light directive dispersing prism 3 after 2 collimations, the light beam after 3 dispersion of dispersing prism is according to centainly sequentially forming
Band, these bands reach diffraction grating 4, after being diffracted the light beam after 4 secondary dispersion of grating again by dispersing prism 3
Image-forming objective lens 5 are reached, the light beam after dispersion in certain sequence is converged to and received on scanning means 6, received at this time by image-forming objective lens 5
The picture according to certain tactic band has been formed on scanning means 6, has been placed according to dispersing prism 3 and diffraction grating 4
Relative position, the image space tone of the bands of a spectrum has close relationship, at the same can pass through the selection of driving mechanism 7 complete it is special
Order color spectrum receives；When using single-geophone receiver mode, the driving structure 7, reception scanning means 6, condenser 8 will be passed through
And single-geophone receiver device 9 completes light path converting and spectrum acquisition.
It should be noted that there are two types of installation sides for the relative position of dispersing prism 3 and diffraction grating 4 in the utility model
Formula, one can make incident beam first pass through the lateral dispersion of dispersing prism 3, then carry out vertical direction color by diffraction grating 4 again
It dissipates, forms crossed dispersion and compose face, receiving plane can obtain spectral information simultaneously on two-dimensional surface at this time；Second, incidence can be made
Light beam first passes through the lateral dispersion of dispersing prism 3, and diffraction grating 4 is then rotated by 90 ° installation along vertical plane direction places, at this time
Light beam carries out secondary lateral dispersion by diffraction grating 4 again, forms one-dimensional dispersion linear array spectrum face, can realize higher resolution spectrum
Output.
Refering to attached drawing 2, Fig. 2 is the composed structure schematic diagram that scanning means is received in the embodiments of the present invention.Such as Fig. 2
Shown, it includes four kinds of forms, one dimensional linear array receiver 61, two-dimensional array receiver that scanning means 6 is received in the present embodiment mainly
62, photelectric receivers or the optical element such as digital micro-mirror 63, transflector element 64.These four receiving devices or optical element according to
User's particular demands can select to use, and can also be mounted in equipment simultaneously, work is switched over by driving mechanism 7.
One dimensional linear array receiver 61 can be simply fixed in receiving surface, can also be carried out by the driving mechanism 7
Three-dimensional machinery moves, and can complete the focus positioning in horizontal plane direction, the spectral scan laterally and longitudinally moved in perpendicular
The work of different location spectra collection is realized in detection.
Two-dimensional array receiver 62 may be used that relative position is fixed and mechanical three-dimensional moves two ways, work as user
When selecting a part of region acquisition spectral information, three-dimensional machinery movement is carried out by the driving mechanism 7, user is reached and specifies area
Domain is stopped gathered data, while two-dimensional array receiver 62 can also complete the focus positioning in horizontal plane direction, perpendicular
The spectral scan detection inside laterally and longitudinally moved, in this example the movement of two-dimensional array receiver 62 be primarily referred to as effective photosurface
Smaller area array CCD, it is this small that CCD is cheap, and certain customers only need to detect sub-fraction region in spectrum face
Spectral information, it is simple and effective using this kind of mode.
One of the characteristics of the utility model is exactly that new digital micro mirror 63 and its key technology are used for the monochromatic optical system
In system, the imaging point on two-dimensional spectrum face is corresponded by digital micro-mirror 63, and control digital micro-mirror 63 and carry out two dimension
The special spectrum of the output of any one spectrum pixel on spectrum face, output completes light by condenser 8 and single-geophone receiver device 9
Spectrum is assembled and spectrum acquisition, only needs 9 one photoelectricity of single-geophone receiver device to connect by the way of spatial light modulator due to this
Unit is received, the cost using multiple opto-electronic receiver units such as area array CCD can be substantially reduced；Meanwhile this digital micro-mirror 63
It can be digital micro-mirror（DMD）Spatial light modulator can also be the light such as adaptive distorting lens or controllable digital micromirror array
Learn device.
Selection one of of the transflector element 64 as user may be implemented the reception of big flux light energy or use reference
A kind of selection when light path, especially when light beam is using the lateral dispersion of dispersing prism 3, diffraction grating 4 also carries out secondary lateral chromatism
It dissipates, when forming one-dimensional dispersion linear array spectrum face, if transflector element 64 can be real using spherical reflector or non-spherical reflector
Spherical reflector, aspherical reflection may be used in existing higher light energy and the output of higher resolution spectrum, transflector element 64
The optical elements such as mirror, semi-transparent semi-reflecting lens, partially reflecting mirror.
It should be mentioned that various spherical surfaces may be used in condenser in the utility model or non-spherical lens realizes simple light
The convergence on road exports, and the reflecting elements such as spherical reflector, non-spherical reflector can also be used to realize the spectrum output of no color differnece
To single-geophone receiver device 9.
Embodiment effect
Scan monochromatic system according to a kind of full spectrum high-resolution multimode provided in this embodiment, system include entrance slit,
Collimator objective, diffraction grating, image-forming objective lens, receives scanning means, driving mechanism, condenser and single-geophone receiver at dispersing prism
Device, wherein entrance slit are placed in the focal point of collimator objective, and entrance slit, collimator objective, diffraction grating, dispersing prism,
Image-forming objective lens, condenser and single-geophone receiver device center line are located in same horizontal line, and keep between each other determining distance with
Angle；Become directional light directive dispersing prism after collimator objective collimates by the light beam of entrance slit, then reaches diffraction
Grating is diffracted the light beam after optical grating diffraction and assembles light beam again by image-forming objective lens, image-forming objective lens are reached after dispersing prism
Onto reception scanning means, and passes through driving mechanism and complete monochromatic spectrum reception；When using single-geophone receiver mode, drive will be passed through
Dynamic structure receives scanning means, condenser and single-geophone receiver device completion light path converting and spectrum acquisition.The present embodiment can be same
A kind of main body light channel structure can realize different types of scanning reception mode, can allow user's root according to specific application range
It flexibly selects corresponding wave band or the higher resolution ratio of selection to operate according to self-demand, higher energy output may be implemented,
The form that scanning means can be received by selection substantially reduces cost.
It should be noted that each embodiment in this specification is described in a progressive manner, each embodiment weight
Point explanation is all difference from other examples, and the same or similar parts between the embodiments can be referred to each other.
So far, it has been combined preferred embodiment shown in the drawings and describes the basic principle of the utility model, main spy
Seek peace the utility model the advantages of.It will be readily appreciated by those skilled in the art that the utility model is not limited by above-described embodiment
System, the description of the embodiments and the specification only illustrate the principle of the present utility model.In the original without departing from the utility model
In the case of reason or essential characteristic, those skilled in the art make relevant art feature equivalent change or replacement, these are more
Technical solution after changing or replacing is fallen within the scope of protection of the utility model.Therefore, in all respects,
The present embodiments are to be considered as illustrative and not restrictive, and the utility model requires protection scope is by appended power
Sharp claim and its equivalent thereof, rather than above description limits, it is intended that by falling in the equivalent requirements of the claims
The all changes of meaning and scope are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
Claims (5)
1. a kind of full spectrum high-resolution multimode scans monochromatic system, which is characterized in that the system includes entrance slit, collimation object
Mirror, diffraction grating, image-forming objective lens, receives scanning means, driving mechanism, condenser and single-geophone receiver device at dispersing prism, described
Entrance slit is placed in the focal point of collimator objective, the entrance slit, collimator objective, dispersing prism, diffraction grating, imaging object
Mirror, condenser and single-geophone receiver device center line are located in same horizontal line, and keep determining distance and angle between each other；It is logical
The light beam for crossing entrance slit becomes directional light directive dispersing prism after collimator objective collimates, and then reaches diffraction grating, quilt
Light beam is converged to reception and swept by the light beam after diffraction grating diffraction again by image-forming objective lens, image-forming objective lens are reached after dispersing prism
On imaging apparatus, and monochromatic spectrum is completed by driving mechanism and is received；When using single-geophone receiver mode, the driving machine will be passed through
Structure receives scanning means, condenser and single-geophone receiver device completion light path converting and spectrum acquisition.
2. full spectrum high-resolution multimode according to claim 1 scans monochromatic system, it is characterised in that：
Wherein, for the dispersing prism with the relative position of the diffraction grating there are two types of mounting means, one can make incident light
Beam first passes through dispersing prism transverse direction dispersion, then carries out vertical direction dispersion by diffraction grating again, forms crossed dispersion and composes face；Its
Two, incident beam can be made to first pass through dispersing prism transverse direction dispersion, secondary lateral dispersion is then carried out by diffraction grating again, is formed
One-dimensional dispersion linear array composes face.
3. full spectrum high-resolution multimode according to claim 1 scans monochromatic system, it is characterised in that：
Wherein, the reception scanning means including but not limited to one dimensional linear array receiver, two-dimensional array receiver, digital micro-mirror,
Transflector optical element.
4. full spectrum high-resolution multimode according to claim 3 scans monochromatic system, it is characterised in that：
Wherein, the one dimensional linear array receiver carries out three-dimensional machinery movement by the driving mechanism, can complete horizontal plane side
To focus positioning, the spectral scan detection laterally and longitudinally moved in perpendicular；
The two-dimensional array receiver may be used that relative position is fixed and mechanical three-dimensional moves two ways, when needing to transport
When dynamic, three-dimensional machinery movement is carried out by the driving mechanism, the focus that can complete horizontal plane direction positions, in perpendicular
The spectral scan detection laterally and longitudinally moved；
The digital micro-mirror includes but not limited to digital micro-mirror（DMD）Spatial light modulator, distorting lens；
The transflector optical element includes but not limited to spherical reflector, non-spherical reflector, semi-transparent semi-reflecting lens, part reflection
The optical elements such as mirror.
5. scanning monochromatic system using full spectrum high-resolution multimode described in claim 1, it is characterised in that：Wherein, described poly-
Light microscopic includes but not limited to various spherical lenses, non-spherical lens, spherical reflector, non-spherical reflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721783860.2U CN207662517U (en) | 2017-12-19 | 2017-12-19 | A kind of full spectrum high-resolution multimode scanning monochromatic system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721783860.2U CN207662517U (en) | 2017-12-19 | 2017-12-19 | A kind of full spectrum high-resolution multimode scanning monochromatic system |
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| Publication Number | Publication Date |
|---|---|
| CN207662517U true CN207662517U (en) | 2018-07-27 |
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|---|---|---|---|
| CN201721783860.2U Expired - Fee Related CN207662517U (en) | 2017-12-19 | 2017-12-19 | A kind of full spectrum high-resolution multimode scanning monochromatic system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624339A (en) * | 2021-07-16 | 2021-11-09 | 吉林大学 | Homodromous dispersive spectrum analyzer and method based on DMD and echelle grating |
-
2017
- 2017-12-19 CN CN201721783860.2U patent/CN207662517U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624339A (en) * | 2021-07-16 | 2021-11-09 | 吉林大学 | Homodromous dispersive spectrum analyzer and method based on DMD and echelle grating |
| CN113624339B (en) * | 2021-07-16 | 2023-02-03 | 吉林大学 | Homodromous dispersive spectrum analyzer and method based on DMD and echelle grating |
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