CN101776570A - Device for enhancing signal-to-noise ratio of emission spectrometer - Google Patents
Device for enhancing signal-to-noise ratio of emission spectrometer Download PDFInfo
- Publication number
- CN101776570A CN101776570A CN200910264833A CN200910264833A CN101776570A CN 101776570 A CN101776570 A CN 101776570A CN 200910264833 A CN200910264833 A CN 200910264833A CN 200910264833 A CN200910264833 A CN 200910264833A CN 101776570 A CN101776570 A CN 101776570A
- Authority
- CN
- China
- Prior art keywords
- light source
- emission spectrometer
- signal
- noise ratio
- ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention discloses a device for enhancing the signal-to-noise ratio of emission spectrometers, which comprises an excitation light source, and an incidence optical system, an incidence slit, a photoelectric conversion system and an photoelectric signal amplifying and processing system which are successively arranged at one side of the excitation light source, wherein one side of the excitation light source is provided with a concave reflection mirror the spherical center of which lies in the position of the excitation light source, and the photoelectric conversion system consists of a monochromator and a photoelectric conversion sensor. The backward radiation of the light source of an emission spectrometer is converged with the forward radiation by means of the device, so the incident light flux of the emission spectrometer is greatly improved, and the emission spectrometer is capable of gathering much radiation information of the light source, i.e., the strength of the light source is enhanced, thereby greatly lowering the requirements to the amplification of the next signal and improving the signal-to-noise ratio.
Description
Technical field
The present invention relates to a kind of emission spectrometer, particularly a kind of device that is used to strengthen the emission spectrometer signal to noise ratio (S/N ratio).
Background technology
The chief component of emission spectrumqa instrument comprises several parts such as the transmitting illuminant that is used for excited sample, sampling system, beam splitting system, photo-translating system, signal Processing.Wherein, transmitting illuminant excites the atoms of elements to be analyzed in the testing sample, thereby produces the signature analysis line of this element; Sampling system is used for sample to be measured is delivered to the excitation source deexcitation; The wavelength separated of the signature analysis line that beam splitting system is then sent element atom to be measured in the light source comes and qualitative its wavelength; Photo-translating system then is converted to electric signal with the light intensity signal of analytical line, carries out quantitative test according to light intensity signal; Signal Processing comprises amplification, filtering, AD conversion, calculating of photoelectric conversion signal etc.
Excitation source is one of most important parts of Atomic Emission Spectrometer AES.Directly influence is to the analytical effect of sample for the ability that excites of excitation source, and the radiation intensity of excitation source then directly influences performances such as the signal to noise ratio (S/N ratio) of overall optical spectrometer and detection limit.
So developing a kind of device that can make full use of the energy of excitation source has become the technical matters that needs to be resolved hurrily in this area.
Summary of the invention
At above-mentioned deficiency of the prior art, the technical problem to be solved in the present invention provides a kind of new device that is used to strengthen the emission spectrometer signal to noise ratio (S/N ratio), and this device adopts increases the light source light channel structure of concave mirror dorsad.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of device that is used to strengthen the emission spectrometer signal to noise ratio (S/N ratio), comprise excitation source and be arranged in order the incident optical system in described excitation source one side, entrance slit of connection, a photo-translating system and a photosignal of being made up of monochromator and photoelectric conversion sensor amplifies and disposal system, the opposite side of described excitation source is provided with a concave mirror.
Preferably, the centre of sphere of described concave mirror is positioned at described excitation source place.
Preferably, the centre of sphere of described concave mirror is positioned at described entrance slit place.
Such scheme has following beneficial effect: the backward radiation of emission spectrometer light source converges to the direction of forward radiation and comes, make the incident flux of emission spectrometer be significantly improved, spectrometer can be collected the more light sources radiation information, be equivalent to strengthen the intensity of light source, signal amplification to the back level has just reduced requirement like this, has also just increased the signal to noise ratio (S/N ratio) of emission spectrometer.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, below elaborates with preferred embodiment of the present invention and conjunction with figs..The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described in detail.
The 1st embodiment:
As shown in Figure 1, this is used to strengthen the device of emission spectrometer signal to noise ratio (S/N ratio), comprise excitation source 2 and be arranged in order the incident optical system 3 in excitation source 2 one sides, entrance slit 4 of connection, photo-translating system 5 and the photosignal of being made up of monochromator and photoelectric conversion sensor amplifies and disposal system 6, the opposite side of excitation source 2 is provided with a concave mirror 1, and the centre of sphere of concave mirror 1 is positioned at described excitation source place in the present embodiment.
When this was used to strengthen the device work of emission spectrometer signal to noise ratio (S/N ratio), 1 pair of light source 2 imaging of concave mirror still were in the position of light source 2, and promptly light source 2 looks like to overlap with it, were equivalent to make the intensity of light source to increase by one times.Understand from the general extent, the monochromator of spectrometer has not only received the forward radiation of light source, and owing to the existence of concave mirror, also the backward radiation with light source has received simultaneously, and the radiation signal of this part has also utilized.The result who obtains like this is equivalent to the intensity multiplication that makes excitation source, the gain of follow-up photodetector and signal processing has also just been reduced half, and then reduced the amplitude of noise, has strengthened the signal to noise ratio (S/N ratio) of overall optical spectrometer system.
The 2nd embodiment:
The 2nd embodiment and the 1st example structure difference are that the centre of sphere of concave mirror 1 is positioned at entrance slit 4 places, can reach the purpose that increases incident flux, strengthens signal to noise ratio (S/N ratio) equally, so do not repeat them here.
More than a kind of device that is used to strengthen the emission spectrometer signal to noise ratio (S/N ratio) was described in detail to the embodiment of the invention provides; for one of ordinary skill in the art; thought according to the embodiment of the invention; part in specific embodiments and applications all can change; in sum; this description should not be construed as limitation of the present invention, and all any changes of making according to design philosophy of the present invention are all within protection scope of the present invention.
Claims (3)
1. device that is used to strengthen the emission spectrometer signal to noise ratio (S/N ratio), comprise excitation source and be arranged in order the incident optical system in described excitation source one side, entrance slit of connection, photo-translating system and the photosignal of being made up of monochromator and photoelectric conversion sensor amplifies and disposal system, it is characterized in that: the opposite side of described excitation source is provided with a concave mirror.
2. the device that is used to strengthen the emission spectrometer signal to noise ratio (S/N ratio) according to claim 1 is characterized in that: the centre of sphere of described concave mirror is positioned at described excitation source place.
3. the device that is used to strengthen the emission spectrometer signal to noise ratio (S/N ratio) according to claim 1 is characterized in that: the centre of sphere of described concave mirror is positioned at described entrance slit place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910264833A CN101776570A (en) | 2009-12-24 | 2009-12-24 | Device for enhancing signal-to-noise ratio of emission spectrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910264833A CN101776570A (en) | 2009-12-24 | 2009-12-24 | Device for enhancing signal-to-noise ratio of emission spectrometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101776570A true CN101776570A (en) | 2010-07-14 |
Family
ID=42513086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910264833A Pending CN101776570A (en) | 2009-12-24 | 2009-12-24 | Device for enhancing signal-to-noise ratio of emission spectrometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101776570A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197665A (en) * | 2015-04-29 | 2016-12-07 | 中国科学院苏州纳米技术与纳米仿生研究所 | Spectrum test device and method of testing thereof |
| CN114577737A (en) * | 2022-03-02 | 2022-06-03 | 北京北分瑞利分析仪器(集团)有限责任公司 | Light source enhancing device of oil emission spectrometer |
-
2009
- 2009-12-24 CN CN200910264833A patent/CN101776570A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197665A (en) * | 2015-04-29 | 2016-12-07 | 中国科学院苏州纳米技术与纳米仿生研究所 | Spectrum test device and method of testing thereof |
| CN106197665B (en) * | 2015-04-29 | 2018-11-09 | 中国科学院苏州纳米技术与纳米仿生研究所 | Spectrum test device and its test method |
| CN114577737A (en) * | 2022-03-02 | 2022-06-03 | 北京北分瑞利分析仪器(集团)有限责任公司 | Light source enhancing device of oil emission spectrometer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204359695U (en) | Single wavelength excites, energy-dispersion X-ray fluorescence spectrometer | |
| CN102608104B (en) | Direct-reading spectrometer based on combination of alternating current/direct current arc and concave grating beam splitting system | |
| CN103529006B (en) | A kind of Portable fluorescence based on micro-fluidic chip detection device | |
| Meyer et al. | 1064 nm dispersive multichannel Raman spectroscopy for the analysis of plant lignin | |
| CN103837518A (en) | Raman substance recognition platform based on cloud computing | |
| CN106569227B (en) | Atmospheric aerosol particulate matter detecting laser radar and inversion method | |
| NZ703875A (en) | Spectroscopic analysis | |
| CN107462566B (en) | Raman spectrometer for detecting specific narrow wavenumber range | |
| CN105021281B (en) | The measuring device and Raman diffused light spectrometer of raman scattering spectrum | |
| WO2011094513A3 (en) | Superior analyzer for raman spectra with high acceptance cone, resolution, transmission, and quantum efficiency, and strong background reduction | |
| CN105675497B (en) | A kind of optical fiber sensing system of while quick detection contents of many kinds of heavy metal ion | |
| CN101776570A (en) | Device for enhancing signal-to-noise ratio of emission spectrometer | |
| CN202794037U (en) | Device for deducting light source fluctuation of atomic fluorescence photometer | |
| CN201628674U (en) | Apparatus for enhancing signal-to-noise ratio of emission spectrometer | |
| CN101582183B (en) | Method for inspecting paper currency | |
| CN102507517A (en) | Photon counting full-spectrum direct reading fluorescence spectrometer | |
| US7847941B2 (en) | Fiber optical assembly for fluorescence spectrometry | |
| JP2013160672A (en) | Optical system for fluorescence detection and fine particle analyzing apparatus | |
| CN112285497A (en) | Partial discharge detection device of gas insulation equipment and gas insulation equipment | |
| CN202837182U (en) | Atomic fluorescence spectrophotometer optical system | |
| WO2017083325A1 (en) | Multichannel ultra-sensitive optical spectroscopic detection | |
| CN212111141U (en) | Portable optical detector | |
| CN202393698U (en) | Optical system for full-automatic biochemical analyzer | |
| CN212111140U (en) | Portable optical detector | |
| CN114112040A (en) | Continuous spectrum filtering and light splitting detection system based on narrow band pass filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100714 |