CN205785521U - A kind of monochromator based on rotating filtering sheet principle - Google Patents
A kind of monochromator based on rotating filtering sheet principle Download PDFInfo
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- CN205785521U CN205785521U CN201620491053.2U CN201620491053U CN205785521U CN 205785521 U CN205785521 U CN 205785521U CN 201620491053 U CN201620491053 U CN 201620491053U CN 205785521 U CN205785521 U CN 205785521U
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- filtering sheet
- rotating filtering
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- mirror
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Abstract
The utility model discloses a kind of monochromator based on rotating filtering sheet principle, including incident beam colimated light system, rotating filtering sheet, assemble imaging system and polariser, polariser is arranged on incident beam colimated light system and assembles between imaging system, assemble and be positioned to image planes on the outgoing beam of imaging system, the mirror lens group that incident beam colimated light system is made up of principal reflection mirror and secondary mirror, battery of lens is arranged on the working channel entrance of rotating filtering sheet；Rotating filtering sheet is made up of the eyeglass being coated with arrowband film, and rotating filtering sheet is arranged in the picture frame of accurately rotation；Polariser is made up of the prism being coated with polarizing coating.This utility model monochromator has the advantage that high light spectral resolution, higher luminous flux and spectral measurement ranges are bigger, excellent combination property.
Description
Technical field
The present invention relates to optical instrument field, a kind of monochromator based on rotating filtering sheet principle.
Background technology
Monochromator is commonly used a kind of light-splitting device in optical instrument, has light splitting function, one section of continuous print spectrum is divided into multiple independent passage, it is achieved spectral scan.
At present, the light-splitting method of monochromator mainly has prismatic decomposition, grating beam splitting, Fourier transformation light splitting three kinds.
Prismatic decomposition is to utilize prism material itself to have this principle of different refracting poweies to the light of different colours to realize.Prism splitter system does not produce spectrum and folds level phenomenon, but measurement scope is affected by transmitance and the dispersive power of prism material, is generally used for visible ray, and resolution is relatively low.When prism is used alone, spectroscopic behaviour is relatively low, is generally applied in combination with other beam splitter, is suitable for the pre-light splitting doing in fine light splitting.
Grating beam splitting utilize diffraction principle to the light carrying out light splitting, i.e. different frequency be mapped to grating with identical angle of incidence time, the position of the same order diffraction primary maximum that the light of each frequency produces is different.Grating splitting system has wider spectral measurement ranges and higher spectral resolution.But owing to being limited by slit size, the method is difficult to obtain higher luminous flux.
Fourier transformation light splitting is that the light wave utilizing different frequency has the principle of Fourier transformation relation after two-beam interference PROCESS MODULATE and carrys out light splitting between interference data and the spectrum of gained.Fourier transformation light splitting has higher spectral resolution and higher luminous flux, but is limited to change in optical path length interval and is difficult to the least, and the method is mainly used in infrared band.
Current various beam splitting system is difficult to take into account the characteristics such as spectral resolution, luminous flux, spectral measurement ranges simultaneously.Develop a kind of monochromator with higher combination property and seem the most urgent.
Utility model content
Not enough in order to solve present in current monochromator, the purpose of this utility model is that providing a kind of has the monochromator based on rotating filtering sheet principle that high light spectral resolution, higher luminous flux and spectral measurement ranges are bigger, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the following technical scheme of this utility model offer:
A kind of monochromator based on rotating filtering sheet principle, including incident beam colimated light system, rotating filtering sheet, assemble imaging system and polariser, described polariser is arranged on incident beam colimated light system and assembles between imaging system, it is positioned to image planes on the outgoing beam of described convergence imaging system, the mirror lens group that described incident beam colimated light system is made up of principal reflection mirror and secondary mirror, battery of lens is arranged on the working channel entrance of rotating filtering sheet；
Described rotating filtering sheet is made up of the eyeglass being coated with arrowband film, and rotating filtering sheet is arranged in the picture frame of accurately rotation；
The incident beam bore of described incident beam colimated light system bore postrotational with rotating filtering sheet with outgoing beam bore is identical；Described polariser is made up of the prism being coated with polarizing coating.
As further program of the utility model: described incident beam colimated light system, rotating filtering sheet and polarizer surface all scribble reflective foil layer.
As this utility model further scheme: described principal reflection mirror and secondary mirror are concave surface secondary rotating paraboloidal mirror.
Compared with prior art, the beneficial effects of the utility model are: this utility model monochromator has the advantage that high light spectral resolution, higher luminous flux and spectral measurement ranges are bigger, excellent combination property.
Accompanying drawing explanation
Fig. 1 is connection diagram of the present utility model.
Fig. 2 is structure composition schematic diagram in this utility model.
In figure: 1-principal reflection mirror；2-secondary mirror；3-rotating filtering sheet；4-assembles imaging system；5-imaging surface；6-polariser.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
Refer to Fig. 1, Fig. 2, in this utility model embodiment, a kind of monochromator based on rotating filtering sheet principle, including incident beam colimated light system, rotating filtering sheet 3, assemble imaging system 4 and polariser 6, polariser 6 is arranged on incident beam colimated light system and assembles between imaging system 4, assembles and is positioned to image planes 5 on the outgoing beam of imaging system 4.
Incident beam colimated light system is that directional light generates system accurately, the mirror lens group that incident beam colimated light system is made up of principal reflection mirror 1 and secondary mirror 2, battery of lens is arranged on the working channel entrance of rotating filtering sheet 3, the monochromator incident beam that target is sent by incident colimated light system is converted into the strictest collimated light beam of coupling monochromator bore, after rotating filtering 3 receives collimated light beam and carries out spectral scan, project polariser 6, outgoing beam is divided into the two light beams in two bundle different polarization directions.
Principal reflection mirror 1 receives the light sent from testee, and reflects light and assemble, and assembles the direction of propagation of light to the focus of principal reflection mirror 1；The light that target is sent by principal reflection mirror 1 reflects and assembles, and convergent beam incides secondary mirror 2 surface, then is reflected away by secondary mirror 2, forms small-bore parallel light emergence；Being provided with an opening in the middle of principal reflection mirror 1, opening size, more than from the directional light size of secondary mirror 2 outgoing, does not stop parallel light emergence.
Principal reflection mirror 1 is concave surface secondary rotating paraboloidal mirror, and principal reflection mirror 1 surface scribbles reflective foil layer, is gone out by incident luminous reflectance.Secondary mirror 2 receives the light that principal reflection mirror 1 reflection is assembled, and to light line reflection, forms the directional light middle opening outgoing from principal reflection mirror 1, form the directional light less than incident beam bore.
Secondary mirror 2 is between the focus of principal reflection mirror 1 and principal reflection mirror 1, and the focus of principal reflection mirror 1 overlaps with the focal position of secondary mirror 2.Secondary mirror 2 is convex surface secondary rotating paraboloidal mirror, and secondary mirror 2 surface scribbles reflective foil layer, is gone out by incident luminous reflectance；The directional light of secondary mirror 2 outgoing enters rotating filtering sheet 3, through the filtration of rotating filtering sheet 3, forms monochromatic emergent light.
Rotating filtering sheet 3 is made up of the eyeglass being coated with arrowband film, and rotating filtering sheet 3 is arranged in the picture frame of accurately rotation.
Polariser 6 is made up of the prism being coated with polarizing coating, and outgoing beam is divided into the outgoing beam in two bundle different polarization directions.
The light beam containing monochromatic spectrum information of outgoing is assembled by assembling imaging system 4, and by target imaging on imaging surface 5.Assembling imaging system 4 to be made up of some lens, be converged to picture to passing through the monochromatic emergent light filtered, imaging surface 5 is positioned on the back focal plane of these group lens.
Photelectric receiver is set on back focal plane, is used for receiving the light energy on focal plane, and converts optical signals into the signal of telecommunication, carry out the signal of telecommunication processing conversion, obtain one-dimensional spectral information and the two-dimensional space information of object, and export and show to display.
In actual application, quantity and the measure spectrum scope of wherein rotating filtering sheet can be changed flexibly according to the needs of measured target.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and in the case of without departing substantially from spirit or essential attributes of the present utility model, it is possible to realize this utility model in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim included in this utility model.Should not be considered as limiting involved claim by any reference in claim.
Claims (3)
1. a monochromator based on rotating filtering sheet principle, including incident beam colimated light system, rotating filtering sheet, assemble imaging system and polariser, described polariser is arranged on incident beam colimated light system and assembles between imaging system, it is positioned to image planes on the outgoing beam of described convergence imaging system, it is characterized in that, the mirror lens group that described incident beam colimated light system is made up of principal reflection mirror and secondary mirror, battery of lens is arranged on the working channel entrance of rotating filtering sheet；
Described rotating filtering sheet is made up of the eyeglass being coated with arrowband film, and rotating filtering sheet is arranged in the picture frame of accurately rotation；
The incident beam bore of described incident beam colimated light system bore postrotational with rotating filtering sheet with outgoing beam bore is identical；Described polariser is made up of the prism being coated with polarizing coating.
Monochromator based on rotating filtering sheet principle the most according to claim 1, it is characterised in that described incident beam colimated light system, rotating filtering sheet and polarizer surface all scribble reflective foil layer.
Monochromator based on rotating filtering sheet principle the most according to claim 1, it is characterised in that described principal reflection mirror and secondary mirror are concave surface secondary rotating paraboloidal mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620491053.2U CN205785521U (en) | 2016-05-26 | 2016-05-26 | A kind of monochromator based on rotating filtering sheet principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620491053.2U CN205785521U (en) | 2016-05-26 | 2016-05-26 | A kind of monochromator based on rotating filtering sheet principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205785521U true CN205785521U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620491053.2U Expired - Fee Related CN205785521U (en) | 2016-05-26 | 2016-05-26 | A kind of monochromator based on rotating filtering sheet principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205785521U (en) |
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2016
- 2016-05-26 CN CN201620491053.2U patent/CN205785521U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20200526 |