CN108458784A - A kind of monochromator - Google Patents
A kind of monochromator Download PDFInfo
- Publication number
- CN108458784A CN108458784A CN201810105497.1A CN201810105497A CN108458784A CN 108458784 A CN108458784 A CN 108458784A CN 201810105497 A CN201810105497 A CN 201810105497A CN 108458784 A CN108458784 A CN 108458784A
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- speculum
- slit
- grating
- shell
- light
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- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 13
- 230000003287 optical effect Effects 0.000 description 7
- 238000012827 research and development Methods 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 4
- 238000005286 illumination Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000001237 Raman spectrum Methods 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002189 fluorescence spectrum Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/12—Generating the spectrum; Monochromators
- G01J3/18—Generating the spectrum; Monochromators using diffraction elements, e.g. grating
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/12—Generating the spectrum; Monochromators
- G01J3/18—Generating the spectrum; Monochromators using diffraction elements, e.g. grating
- G01J2003/1866—Monochromator for three or more wavelengths
Abstract
The present invention relates to a kind of monochromators, including shell, multiple slits are set in the housing sidewall, the detector being connected with the slit is provided with outside the shell, light path system is provided in the shell, the light path system includes the multiple gratings being arranged in light path and multiple speculums.The beneficial effects of the present invention are provide a kind of monochromator at low cost, easy to operate and vdiverse in function.
Description
Technical field
The present invention relates to a kind of monochromators.
Background technology
Monochromator is that monochromatic component is generated in spectral instrument.Monochromator is similar to the structure of spectrum spectrograph, for from
A series of electromagnetic radiation of narrow bands is isolated in broadband radiation beam, it is on exit slit substitution spectrograph focal plane
Photographic plate has prism monochromator and grating monochromator.Wherein grating monochromator is relatively widely used, in scientific research, production, Quality Control etc.
Link.Absorption spectrum or fluorescence spectrum are either penetrated, Raman spectrum, it is indispensable for how obtaining Single wavelength radiation
Means.Since modern monochromator can have very wide spectral region (UV-IR), high spectral resolution (to arrive 0.001nm), auto-wave
Long scan, complete computer control function are easily fused to high-performance Auto-Test System with other peripheral equipments, use computer
Automatically scanning multiple-grating monochrometer has become the first choice of spectral investigation.
When a branch of combining light enters the entrance slit of monochromator, directional light is pooled by optical alignment mirror first, then lead to
It is separated wavelength (color) to cross diffraction grating dispersion.The angle that grating is left using each wavelength is different, by focusing mirror
Reimaging exit slit.It can accurately change outgoing wavelength by computer control.
Invention content
In view of the above-mentioned problems in the prior art, the main purpose of the present invention is to provide a kind of at low cost, operations
Convenient and monochromator vdiverse in function.
The technical scheme is that such：
Multiple slits are arranged in the housing sidewall for a kind of monochromator, including shell, be provided with outside the shell with it is described
The detector that slit is connected, is provided with light path system in the shell, the light path system include be arranged in it is more in light path
A grating and multiple speculums.
Wherein, multiple slits include four slits, respectively the first slit, the second slit, third slit and the
Four slits, wherein first slit is arranged on the rear wall of the shell, and second slit is arranged before the shell
On side wall, the third slit and the 4th slit are arranged in the housing left side wall, and third slit setting is the
The rear side of four slits.
Further, multiple gratings are arranged at left side in the shell, and multiple gratings include three light
Grid, respectively the first grating, the second grating and third grating, first grating, the second grating and third grating ruler
It is very little identical, and arrangement form has the grating assembly of regular triangle shape.
Further, multiple speculums include four speculums, and respectively the first speculum, the second speculum, third are anti-
Penetrate mirror and the 4th speculum, wherein first speculum and the 4th speculum are symmetrically arranged at the grating assembly
Both sides, second speculum and third speculum are arranged at the right side in the shell.
Further, first speculum and the 4th speculum are plane half-reflection and half-transmission speculum, and described first
Speculum and the 4th speculum are arranged at the left side in the shell, and second speculum and third speculum are off-axis
Parabolic mirror.
Further, first speculum is corresponding with first slit and third slit, the 4th speculum
It is corresponding with second slit and the 4th slit.
Further, second speculum is arranged on the right side of first speculum and corresponding thereto, and described
Three speculums are arranged on the right side of the 4th speculum and corresponding thereto.
Further, the size of first speculum and the 4th speculum is identical, and first speculum and the 4th
The wave band of speculum is different, and second speculum is identical with the size of third speculum.
Further, the wave band and demand pairs of first grating, the second grating and third grating are all different.
Further, first grating, the second grating and third grating are balzed grating, and are different model
Balzed grating,.
The present invention has the following advantages and beneficial effect：The monochromator of the present invention includes shell, is set in the housing sidewall
Multiple slits are set, the detector being connected with the slit is provided with outside the shell, light path system is provided in the shell,
The light path system includes the multiple gratings being arranged in light path and multiple speculums；By multiple slits of setting, can appoint
Meaning selects multiple entrance slits or multiple exit slits, and the size of entrance slit or exit slit is adjustable；Pass through setting
Multiple balzed grating,s realize the balzed grating, for configuring multiple and different wave bands；By multiple speculums of setting, and multiple reflections
Mirror can be off axis paraboloidal mirror or half-reflection and half-transmission speculum, and the specification for realizing off axis paraboloidal mirror in monochromator is identical
Meanwhile reduced the R＆D costs of monochromator, and in monochromator half-reflection and half-transmission speculum specification it is identical, further drop
The low R＆D costs of monochromator；The monochromator of the present invention can also be achieved by the balzed grating, of multiple and different wave bands from deep ultraviolet
Light splitting function of the light to LONG WAVE INFRARED light.
Description of the drawings
Fig. 1 is the structure principle chart of monochromator provided in an embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.Therefore, below to the reality of the present invention provided in the accompanying drawings
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, can also be electrical connection；It can be directly connected, it can also be indirect by intermediary
It is connected, can is the connection inside two elements.For the ordinary skill in the art, it can manage as the case may be
Solve the concrete meaning of above-mentioned term in the present invention.
The present invention is further illustrated with specific embodiment below with reference to accompanying drawings.
As shown in Figure 1：The monochromator of the embodiment of the present invention, including shell 100 are arranged on 100 side wall of the shell multiple
Slit, the shell 100 are provided with the detector being connected with the slit outside, light path system are provided in the shell 100,
The light path system includes the multiple gratings being arranged in light path and multiple speculums.
Wherein, multiple slits include four slits, respectively the first slit 101, the second slit 102, third slit
103 and the 4th slit 104, wherein first slit 101 is arranged on the rear wall of the shell 100, second slit
102 are arranged on the front side wall of the shell 100, and 103 and the 4th slit 104 of the third slit is arranged at the shell
On 100 left side walls, and the rear side in the 4th slit 104 is arranged in the third slit 103.It can be selected for a post in aforementioned four slit
One or two anticipate as entrance slit, and can be used simultaneously when two conduct entrance slits；Remaining slit is used as
Slit is penetrated, and different detectors 112,113,114 or 115 can be connected, the detector can be photomultiplier；Therefore originally
The monochromator of invention realizes the function of two entrance slits and two exit slits, and entrance slit or exit slit can appoint
Meaning selection；Meanwhile the size of entrance slit or exit slit is adjustable；Therefore, monochromator of the invention can configure two simultaneously
The completely different light source of a wave band selects the light source of two entrance slit configuration different-wavebands.
Multiple gratings are arranged at left side in the shell 100, and multiple gratings include three gratings, respectively
For the first grating 109, the second grating 110 and third grating 111, first grating 109, the second grating 110 and third
The size of grating 111 is identical, and arrangement form has the grating assembly of regular triangle shape；Therefore, monochromator of the invention can
The grating model of three different wavelength, different demand pairs is configured simultaneously, and wave band covers the wave band of three gratings.
Multiple speculums include four speculums, respectively the first speculum 105, the second speculum 106, third speculum
107 and the 4th speculum 108, wherein first speculum, 105 and the 4th speculum 108 is symmetrically arranged at described
The both sides of grating assembly, second speculum 106 and third speculum 107 are separately positioned on the right side in the shell 100.
First speculum, 105 and the 4th speculum 108 is plane half-reflection and half-transmission speculum, and described first reflects
Mirror 105 and the 4th speculum 108 are arranged at the left side in the shell 100, second speculum 106 and third speculum
107 be off-axis parabolic mirror；First speculum 105 is opposite with first slit 101 and third slit 103
It answers, the 4th speculum 108 is corresponding with second slit, 102 and the 4th slit 104.
Second speculum 106 is arranged on the right side of first speculum 105 and corresponding thereto, the third is anti-
Mirror 107 is penetrated to be arranged on the right side of the 4th speculum 108 and corresponding thereto.
First speculum 105 is identical with the size of the 4th speculum 108, and first speculum 105 and the 4th
The wave band of speculum 108 is different, and second speculum 106 is identical with the size of third speculum 107.
The wave band and demand pairs of first grating 109, the second grating 110 and third grating 111 are all different.
First grating 109, the second grating 110 and third grating 111 are balzed grating, and are different model
Balzed grating,；Meanwhile first grating 109, the second grating 110 and third grating 111 are installed in grating rotating platform,
And first grating 109, the second grating 110 and third grating 111 can be selected by electric or hand rotating grating turntable
Corresponding grating.
The monochromator of the present invention includes shell, is arranged multiple slits in the housing sidewall, be provided with outside the shell with
The detector that the slit is connected, light path system is provided in the shell, and the light path system includes being arranged in light path
Multiple gratings and multiple speculums；By multiple slits of setting, multiple entrance slits or multiple outgoing can be arbitrarily selected
Slit, and the size of entrance slit or exit slit is adjustable；By multiple balzed grating,s of setting, it is multiple not to realize configuration
With the balzed grating, of wave band；By multiple speculums of setting, and multiple speculums can be off axis paraboloidal mirror or half-reflection and half-transmission
Speculum, realize off axis paraboloidal mirror in monochromator specification it is identical while, reduced the research and development of monochromator at
This, and in monochromator half-reflection and half-transmission speculum specification it is identical, further reduced the R＆D costs of monochromator；The present invention
The balzed grating,s of the multiple and different wave bands of monochromator can also be achieved the light splitting function from deep ultraviolet light to LONG WAVE INFRARED light.
Monochromator provided in an embodiment of the present invention, specific use process is as follows：
1, when measuring a kind of light source
When selecting light inlet of first slit 101 for test light, it is irradiated to 105 (i.e. plane half anti-half of the first speculum
Transflector mirror) after, the direction of propagation of test light is irradiated to the second speculum 106 (i.e. off-axis parabolic mirror) after will changing
Afterwards, it forms directional light and changes the direction of propagation of light and be irradiated to the second grating installed in grating rotating platform (not shown)
(grating rotating platform is rotatable, and the first grating 109 or third grating may be selected in corresponding balzed grating, on 110 (i.e. balzed grating,s)
111) it, by the light splitting of balzed grating, and forms directional light and is irradiated on third speculum 107 (i.e. off-axis parabolic mirror),
It is narrow to second it to be irradiated to the 4th speculum 108 (i.e. the speculum of half-reflection and half-transmission) post-concentration after the focusing of third speculum 107
At seam 102 and the 4th slit 104, at this moment needs, one light-emitting window test of arbitrary selection can be used to need to wait for according to actual
The optical band of survey.
At this moment it is light inlet to select the first slit 101, and the second slit 102 or the 4th slit 104 are light-emitting window.Light inlet
Or light-emitting window has following several selection modes：
When select third slit 103 for light inlet when, the 4th slit 104 or the second slit 102 are light-emitting window.
When select the second slit 102 for light inlet when, the first slit 101 or third slit 103 are light-emitting window.
When select the 4th slit 104 for light inlet when, the first slit 101 or third slit 103 are light-emitting window.
2, when measuring the optical band of two light sources simultaneously
1) when needing to test the compound optical band of two light sources：
Select the first slit 101 and third slit 103 for the light inlet of test light when, by the illumination of the first slit 101
After being mapped to the first speculum 105 (i.e. plane half-reflection and half-transmission speculum), the direction of propagation of test light is irradiated to after will changing
After two-mirror 106 (off-axis parabolic mirror), forms directional light and change the direction of propagation of light and be irradiated to grating rotating platform
The second grating 110 (balzed grating) on (grating rotating platform is rotatable, corresponding balzed grating, may be selected the first grating 109 or
Third grating 111), by balzed grating, light splitting and formed directional light be irradiated to third speculum 107 (off axis paraboloid mirror reflect
Mirror) on, 108 (speculum of half-reflection and half-transmission) post-concentration of the 4th speculum is irradiated to after the focusing of third speculum 107 to the
At two slits 102 and the 4th slit 104；Pass through the first speculum 105 (at this time by the light to be tested of third slit 103
First speculum 105 is to penetrate for the light to be tested entered from third slit 103) be irradiated to the second speculum 106 (from
Axis parabolic mirror) after, it forms directional light and changes the direction of propagation of light and be irradiated on the second grating 110 of grating rotating platform
(grating rotating platform is rotatable, and the first grating 109 or third grating 111 may be selected in corresponding balzed grating), by balzed grating,
It is divided and forms directional light and be irradiated on third speculum 107 (off-axis parabolic mirror), focused by third speculum 107
After be irradiated to 108 post-concentration of the 4th speculum at the second slit 102 and the 4th slit 104, the two light source light waves at this time
The all wavelengths of section can be all detected at the second slit 102 of light to be measured and the 4th slit 104.It at this moment can be according to reality
Use need, one light-emitting window test of arbitrary selection needs the optical band of two light sources to be measured.
The light inlet of light to be measured and the selection mode of light-emitting window also have：
Second slit 102 and the 4th slit 104 are light inlet, and the first slit 101 is light-emitting window with third slit 103.
2) when needing the test respective optical band of two light sources simultaneously：
When selecting light inlet of first slit 101 for test light, the first speculum is mapped to by the illumination of the first slit 101
After 105, after the direction of propagation of test light is irradiated to the second speculum 106 after will changing, forms directional light and change the propagation of light
Direction is irradiated on the second grating (balzed grating) 110 of grating rotating platform that (grating rotating platform is rotatable, corresponding balzed grating,
The first grating 109 or third grating 111 may be selected), by balzed grating, light splitting and form directional light and be irradiated to third reflection
On mirror 107 (off-axis parabolic mirror), it is irradiated to 108 post-concentration of the 4th speculum after the focusing of third speculum 107 and arrives
At second slit 102 and the 4th slit 104, can be tested at light hole i.e. the 4th slit 104 from the first slit 101 as into
The wave band of the light source of optical port.
When selecting light inlet of second slit 102 for test light, the 4th speculum is mapped to by the illumination of the second slit 102
After 108, after the direction of propagation of test light is irradiated to third speculum 107 after will changing, forms directional light and change the biography of light
It broadcasts direction and is irradiated on the second grating 110 of grating rotating platform that (grating rotating platform is rotatable, and corresponding balzed grating, may be selected the
One grating 109 or third grating 111), by balzed grating, light splitting and form directional light and be irradiated on the second speculum 106,
105 post-concentration of the first speculum is irradiated to at third slit 103 and the first slit 101 after the focusing of the second speculum 106,
The wave band as the light source of light inlet from the second slit 102 can be tested at light hole, that is, third slit 103.
Finally it should be noted that：Above-described embodiments are merely to illustrate the technical scheme, rather than to it
Limitation；Although the present invention is described in detail referring to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：
It can still modify to the technical solution recorded in previous embodiment, or to which part or all technical features into
Row equivalent replacement；And these modifications or substitutions, it does not separate the essence of the corresponding technical solution various embodiments of the present invention technical side
The range of case.
Claims (10)
1. a kind of monochromator, it is characterised in that：Including shell, multiple slits, the shell peripheral hardware are set in the housing sidewall
It is equipped with the detector being connected with the slit, light path system is provided in the shell, the light path system includes being arranged in
Multiple gratings in light path and multiple speculums.
2. monochromator according to claim 1, which is characterized in that multiple slits include four slits, respectively the
One slit, the second slit, third slit and the 4th slit, wherein first slit is arranged on the rear wall of the shell,
Second slit is arranged on the front side wall of the shell, and the third slit and the 4th slit are arranged at the shell left side
On side wall, and the rear side in the 4th slit is arranged in the third slit.
3. monochromator according to claim 2, which is characterized in that multiple gratings are arranged in the shell left
Side, and multiple gratings include three gratings, respectively the first grating, the second grating and third grating, first light
The size of grid, the second grating and third grating is identical, and arrangement form has the grating assembly of regular triangle shape.
4. monochromator according to claim 3, which is characterized in that multiple speculums include four speculums, respectively the
One speculum, the second speculum, third speculum and the 4th speculum, wherein first speculum and the 4th speculum
The both sides of the grating assembly are symmetrically arranged at, second speculum and third speculum are arranged in the shell
Right side.
5. monochromator according to claim 4, which is characterized in that first speculum and the 4th speculum are plane
Half-reflection and half-transmission speculum, and first speculum and the 4th speculum are arranged at the left side in the shell, described second
Speculum and third speculum are off-axis parabolic mirror.
6. monochromator according to claim 5, which is characterized in that first speculum and first slit and third
Slit is corresponding, and the 4th speculum is corresponding with second slit and the 4th slit.
7. monochromator according to claim 5, which is characterized in that second speculum is arranged in first speculum
Right side and corresponding thereto, the third speculum is arranged on the right side of the 4th speculum and corresponding thereto.
8. monochromator according to claim 4, which is characterized in that the size phase of first speculum and the 4th speculum
Together, and the wave band of first speculum and the 4th speculum is different, the size phase of second speculum and third speculum
Together.
9. monochromator according to claim 3, which is characterized in that first grating, the second grating and third grating
Wave band and demand pairs be all different.
10. monochromator according to claim 9, which is characterized in that first grating, the second grating and third grating
It is balzed grating, and is the balzed grating, of different model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810105497.1A CN108458784A (en) | 2018-02-02 | 2018-02-02 | A kind of monochromator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810105497.1A CN108458784A (en) | 2018-02-02 | 2018-02-02 | A kind of monochromator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108458784A true CN108458784A (en) | 2018-08-28 |
Family
ID=63239341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810105497.1A Pending CN108458784A (en) | 2018-02-02 | 2018-02-02 | A kind of monochromator |
Country Status (1)
| Country | Link |
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| CN (1) | CN108458784A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187428A (en) * | 2018-10-26 | 2019-01-11 | 广州市怡文环境科技股份有限公司 | spectrometer and water quality detecting device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2202342A (en) * | 1985-06-19 | 1988-09-21 | Rofin Sinar Laser Uk Ltd | Optical spectrum multiplexer |
| CN201016804Y (en) * | 2007-03-23 | 2008-02-06 | 北京赛凡光电仪器有限公司 | Multiple grating rotating platform, monochrometer and spectrometer having the same |
-
2018
- 2018-02-02 CN CN201810105497.1A patent/CN108458784A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2202342A (en) * | 1985-06-19 | 1988-09-21 | Rofin Sinar Laser Uk Ltd | Optical spectrum multiplexer |
| CN201016804Y (en) * | 2007-03-23 | 2008-02-06 | 北京赛凡光电仪器有限公司 | Multiple grating rotating platform, monochrometer and spectrometer having the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187428A (en) * | 2018-10-26 | 2019-01-11 | 广州市怡文环境科技股份有限公司 | spectrometer and water quality detecting device |
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Application publication date: 20180828 |
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