CN106092936A - A kind of spectral energy adjusting means - Google Patents
A kind of spectral energy adjusting means Download PDFInfo
- Publication number
- CN106092936A CN106092936A CN201610606239.2A CN201610606239A CN106092936A CN 106092936 A CN106092936 A CN 106092936A CN 201610606239 A CN201610606239 A CN 201610606239A CN 106092936 A CN106092936 A CN 106092936A
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- China
- Prior art keywords
- optical axis
- chromatic aberration
- optical module
- axial chromatic
- spectrum
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
Abstract
A kind of spectral energy adjusting means, including the xenon flash lamp being arranged on primary optical axis, with the optical module of axial chromatic aberration and the adjusting part that can move along described primary optical axis, described adjusting part is provided with loophole, and described loophole is positioned on primary optical axis.The invention has the beneficial effects as follows: spectral power distribution characteristic in continuous spectroscopic measurement module can be nursed one's health as required, so that required spectrum has higher energy, improve the signal to noise ratio of absorbance measuring.
Description
Technical field
The present invention relates to spectral analysis apparatus field, specifically a kind of spectral energy adjusting means.
Background technology
Ultraviolet-visible continuous absorption spectral technique is usually used in elemental analysis, in environmental pollution gas analysis and water quality
Analysis aspect is widely used.Continuous print spectral information combines chemometrics method can realize the pollution under complicated environmental condition
Analyte detection.Existing a lot of for gas analysis and the ultraviolet-visible continuous spectrum analytical tool of water analysis, its core is by arteries and veins
Rush xenon source, flow cell and the ultraviolet-visible spectrum acquisition module of micro spectrometer composition, by gathering ultraviolet-visible even
Continuous spectrum, calculates absorption spectrum, and then analyzes the concentration parameter of measured matter.The advantage of xenon flash lamp is that spectrum can cover
The whole ultraviolet-visible-near-infrared spectrum scope of 200～800nm, spectrum is continuous, and works in a pulsed fashion, low in energy consumption,
Life-span is long.But the spectral power distribution of xenon flash lamp is the most uneven, there is the spike that intensity is the highest, particularly miniature use
The when that spectrogrph spectral resolution being higher, the spectrum spike that intensity is higher is the most saturated, saturated permissible generally for avoiding
Reducing light intensity, this makes partial spectrum section energy too low, and the absorbance signal to noise ratio of measurement is poor.In actual applications, often only
One section of spectrum is used to be analyzed.
Fig. 1 is typical uv-visible absorption spectra measuring principle figure, and the light beam 12 that xenon flash light source 11 sends is first
Collimated mirror group 13 becomes collimated beam, and collimated beam passes through flow cell 14, surplus after being absorbed by the measured matter in flow cell 14
Remaining light bundle the most concentrated mirror group 15 is assembled, coupled into optical fibres 16 at convergent point, and light beam is conducted to micro spectrometer by optical fiber 16
17 complete spectra collection.
Fig. 2 is the spectral power distribution of xenon flash lamp, there is the kurtosis that a lot of energy is higher, great majority spectrum in spectrum
The energy of section is relatively low.The signal to noise ratio of the position measurement absorption spectrum that energy value is higher is higher in actual use, and most
The absorption spectrum signal to noise ratio that number spectral coverage is measured is limited.
Summary of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide a kind of spectral energy adjusting means, it is achieved to spectrum
Energy is adjusted.
The purpose of the present invention implements by the following technical programs:
A kind of spectral energy adjusting means, including the xenon flash lamp being arranged on primary optical axis, with the optics of axial chromatic aberration
Assembly and the adjusting part that can move along described primary optical axis, described adjusting part is provided with loophole, and described printing opacity
Hole is positioned on primary optical axis.
Preferably, described loophole is circular port.
Preferably, the described optical module with axial chromatic aberration is lens or the battery of lens to light beam with converging action.
Preferably, the described optical module with axial chromatic aberration includes at least one convex lens.
Preferably, described xenon flash lamp is arranged on the position beyond the focus of described convex lens.
Preferably, described adjusting part is diaphragm.
Preferably, the circumferential size of described diaphragm is more than the circumferential size of the described optical module with axial chromatic aberration.
Preferably, the distance between veiling glare device and described air chamber exit portal to be measured that disappears described in disappears veiling glare device described in being more than
And the distance between described ultraviolet detector device.
The invention has the beneficial effects as follows: spectral power distribution in continuous spectroscopic measurement module can be nursed one's health as required special
Property, so that required spectrum has higher energy, improve the signal to noise ratio of absorbance measuring.
Accompanying drawing explanation
Below according to drawings and Examples, the present invention is described in further detail.
Fig. 1 is typical UV-visible absorption spectra measuring principle figure.
Fig. 2 is calibration pulse xenon lamp spectrum.
Fig. 3 is the schematic diagram using the optical module with axial chromatic aberration and diaphragm to select spectrum.
Fig. 4 is the schematic diagram using the optical module with axial chromatic aberration and small reflector to select spectrum.
Fig. 5 is the spectral measurement schematic diagram that xenon flash lamp spectrum can carry out Energy distribution conditioning.
Fig. 6 is the xenon flash lamp spectrum after conditioning.
Detailed description of the invention
As seen in figures 3-6, a kind of spectral energy adjusting means is embodiments provided, including being arranged on primary optical axis
Xenon flash lamp, with the optical module of axial chromatic aberration and the adjusting part that can move along described primary optical axis, described regulation
Assembly is provided with loophole, and described loophole is positioned on primary optical axis.
Wherein, described loophole is circular port.
The described optical module with axial chromatic aberration is lens or the battery of lens to light beam with converging action, can be total light
Focal power is the combination of the multiple lens just and with axial chromatic aberration.
The described optical module with axial chromatic aberration includes at least one convex lens, can be the single band with positive light coke
There are the lens of axial chromatic aberration.
Described xenon flash lamp is arranged on the position beyond the focus of described convex lens.
Described adjusting part is diaphragm.
The circumferential size of described diaphragm is more than the circumferential size of the described optical module with axial chromatic aberration.
Wherein, described diaphragm is aperture diaphragm, for the thin slice of perforate, only allows aperture segment printing opacity, and other parts are complete
It is in the light.Described aperture diaphragm, for small reflector, required spectral reflectance is entered subsequent optical path by reflecting mirror.
The described distance disappeared between veiling glare device and described air chamber exit portal to be measured disappears veiling glare device with described described in being more than
Distance between ultraviolet detector device.
The present invention, by the way of adding the optical module containing axial chromatic aberration and diaphragm in the optical path, changes spectrogrph and visits
The spectral power distribution of the spectrum measured, reaches the purpose of the spectral power distribution regulation utilizing spectra collection module.
In order to allow those skilled in the art become apparent from the creation objective of the present invention, it is embodied as below in conjunction with the accompanying drawings and with one
Example is illustrated:
Fig. 3 is the schematic diagram using the optical module with axial chromatic aberration and diaphragm to select spectrum.Adjustable light source portion
Point include xenon flash lamp 31, with the optical module 32 of axial chromatic aberration and diaphragm 33.The light beam 34 that light source sends is through with axially
After the optical module 32 of aberration, the light beam of different wave length diverse location on optical axis is assembled, and 35,36 and 37 represent λ respectively1、λ2
And λ3The light beam of three kinds of different wave lengths, is focused at the diverse location of optical axis respectively.The thin slice of perforate centered by diaphragm 33, light beam can
Pass through from perforate.The convergent point of light beam 37 overlaps just with the perforate of diaphragm 33 in figure 3, and light beam 35 is assembled before diaphragm 33
After dissipate, light beam 36 is not the most assembled at diaphragm 33, now through λ in light beam3Composition is most, λ1And λ2It is suppressed, according to
This principle, light source light spectrum distribution just can be nursed one's health by the size and the front and back position that adjust diaphragm 33.
Fig. 4 is the schematic diagram using the optical module with axial chromatic aberration and small reflector to select spectrum.Adjustable light
Source part includes xenon flash lamp 41, with the optical module 42 of axial chromatic aberration and small reflector 43.Light beam 44 warp that light source sends
After optical module 42 with axial chromatic aberration, the light beam of different wave length diverse location on optical axis is assembled, and 45,46 and 47 respectively
Represent λ1、λ2And λ3The light beam of three kinds of different wave lengths, is focused at the diverse location of optical axis respectively.Small reflector 43 tilts certain angle
Being placed on after degree on optical axis, light beam can reflect on its surface.The convergent point of light beam 47 and the reflecting surface of small reflector 43 in the diagram
Essentially coinciding, light beam 45 dissipates after assembling before small reflector 43, and light beam 46 is not the most assembled at small reflector 43, now exists
Small reflector 43 reflects λ in light3Composition is most, λ1And λ2Be suppressed, according to this principle, adjust small reflector 43 size and
Light source light spectrum distribution just can be nursed one's health by front and back position.
Fig. 5 is to use the module 51 that can nurse one's health light source light spectrum in Fig. 3 to replace the light source module 11 in Fig. 1, thus
Light source light spectrum can be nursed one's health, obtain spectral distribution optimum in actual use.
Fig. 6 be a kind of conditioned after actual spectrum, by 200～230nm and visible ray of ultraviolet spectral coverage in this spectrum
The 400～450nm of spectral coverage are nursed one's health so that it is relative light intensity is greatly improved, thus improve the spectral signal-noise ratio of this spectral coverage, special
It is not suitable in Pollution Gas monitoring simultaneously to NH3、NO、NO2、SO2, the detection of BTEX.
The invention has the beneficial effects as follows: spectral power distribution in continuous spectroscopic measurement module can be nursed one's health as required special
Property, so that required spectrum has higher energy, improve the signal to noise ratio of absorbance measuring.
Last it is noted that the foregoing is only the preferred embodiment of invention, it is not limited to invention, although
Being described in detail invention with reference to previous embodiment, for a person skilled in the art, it still can be to front
State the technical scheme described in each embodiment to modify, or wherein portion of techniques feature is carried out equivalent.All send out
Within bright spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in invention protection domain it
In.
Claims (8)
1. a spectral energy adjusting means, it is characterised in that include the xenon flash lamp being arranged on primary optical axis, with axial color
The optical module of difference and the adjusting part that can move along described primary optical axis, described adjusting part is provided with loophole, and
Described loophole is positioned on primary optical axis.
2. device as claimed in claim 1, it is characterised in that described loophole is circular port.
3. device as claimed in claim 1, it is characterised in that the described optical module with axial chromatic aberration is to have light beam
The lens of converging action or battery of lens.
4. device as claimed in claim 3, it is characterised in that the described optical module with axial chromatic aberration includes at least one
Convex lens.
5. device as claimed in claim 4, it is characterised in that described xenon flash lamp is arranged on beyond the focus of described convex lens
Position.
6. device as claimed in claim 1, it is characterised in that described adjusting part is diaphragm.
7. device as claimed in claim 6, it is characterised in that the circumferential size of described diaphragm is more than described with axial chromatic aberration
The circumferential size of optical module.
8. the device as described in one of claim 1-7, it is characterised in that described in disappear veiling glare device and described air chamber outgoing to be measured
Distance between Kou disappears the distance between veiling glare device and described ultraviolet detector device described in being more than.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610606239.2A CN106092936B (en) | 2016-07-28 | 2016-07-28 | Spectral energy adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610606239.2A CN106092936B (en) | 2016-07-28 | 2016-07-28 | Spectral energy adjusting device |
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| Publication Number | Publication Date |
|---|---|
| CN106092936A true CN106092936A (en) | 2016-11-09 |
| CN106092936B CN106092936B (en) | 2022-06-24 |
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| CN201610606239.2A Active CN106092936B (en) | 2016-07-28 | 2016-07-28 | Spectral energy adjusting device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018010A (en) * | 2012-11-30 | 2013-04-03 | 北京振兴计量测试研究所 | Light source spectrum modulating device |
| CN103162831A (en) * | 2011-12-19 | 2013-06-19 | 中国科学院微电子研究所 | Broadband polarization spectrograph and optical measurement system |
| CN103868590A (en) * | 2014-04-03 | 2014-06-18 | 哈尔滨工业大学 | Continuous broadband short wave light source with adjustable spectrum range |
| CN204086131U (en) * | 2014-07-22 | 2015-01-07 | 北京佰纯润宇生物科技有限公司 | The full wavelength scanner that flow cell is external or multiple optional wavelength checkout equipment simultaneously |
| CN105467597A (en) * | 2015-11-27 | 2016-04-06 | 北京振兴计量测试研究所 | Multi-spectral starlight light source |
-
2016
- 2016-07-28 CN CN201610606239.2A patent/CN106092936B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162831A (en) * | 2011-12-19 | 2013-06-19 | 中国科学院微电子研究所 | Broadband polarization spectrograph and optical measurement system |
| CN103018010A (en) * | 2012-11-30 | 2013-04-03 | 北京振兴计量测试研究所 | Light source spectrum modulating device |
| CN103868590A (en) * | 2014-04-03 | 2014-06-18 | 哈尔滨工业大学 | Continuous broadband short wave light source with adjustable spectrum range |
| CN204086131U (en) * | 2014-07-22 | 2015-01-07 | 北京佰纯润宇生物科技有限公司 | The full wavelength scanner that flow cell is external or multiple optional wavelength checkout equipment simultaneously |
| CN105467597A (en) * | 2015-11-27 | 2016-04-06 | 北京振兴计量测试研究所 | Multi-spectral starlight light source |
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| Publication number | Publication date |
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| CN106092936B (en) | 2022-06-24 |
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Address after: High tech Zone of Shandong Province, Qingdao City, 266109 East Road No. 379 Applicant after: Qingdao Laoying Haina Photoelectric Environmental Protection Group Co., Ltd. Address before: High tech Zone of Shandong Province, Qingdao City, 266109 East Road No. 379 Applicant before: Qingdao Haina Guangdian Environmental Protection Co., Ltd. |
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