CN217638671U - Double-beam optical system of spectrophotometer - Google Patents
Double-beam optical system of spectrophotometer Download PDFInfo
- Publication number
- CN217638671U CN217638671U CN202220629133.5U CN202220629133U CN217638671U CN 217638671 U CN217638671 U CN 217638671U CN 202220629133 U CN202220629133 U CN 202220629133U CN 217638671 U CN217638671 U CN 217638671U
- Authority
- CN
- China
- Prior art keywords
- light
- spectrophotometer
- mirror
- optical system
- reflector
- 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.)
- Active
Links
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
The utility model discloses a spectrophotometer double-beam optical system, which comprises a light source component, a light source component and a light source component, wherein the light source component comprises a tungsten lamp, a deuterium lamp and a mercury lamp; the light decomposition assembly comprises a first collimating mirror, a second collimating mirror and a grating, the first collimating mirror receives the light emitted by the light source assembly and reflects the light to the grating, and the grating reflects the light to the second collimating mirror; the light splitting component comprises a chopper mirror, and the chopper mirror receives the light emitted by the light splitting component and then divides the light into two paths of light which are respectively emitted into a first reference light path and a second reference light path; the first reference light path and the second reference light path receive light and reflect the light to the photomultiplier after detecting the sample. The utility model discloses the wavelength precision is high, and instrument index parameter improves by a wide margin, and energy loss reduces by a wide margin, can eliminate the electrical property difference between the different components and parts, has improved the detectability and the index parameter of instrument at ultraviolet band greatly, and simple process both made things convenient for user operation and use and also can make things convenient for spare part manufacturing.
Description
Technical Field
The utility model relates to a chopsticks technical field specifically is a two beam optical system of spectrophotometer.
Background
The double-beam spectrophotometer is a conventional laboratory analysis device, also called an ultraviolet/visible spectrophotometer, which utilizes a spectral analysis method to perform qualitative and quantitative analysis on a sample and has wide application in various fields of organic chemistry, inorganic chemistry, biochemistry, life science, medicine analysis, food inspection, medicine and health, environmental protection, geology, metallurgy, petroleum, machinery, commodity inspection, agriculture and the like.
The double-beam spectrophotometer on the market at present has a very complex structure and a large difficulty in manufacturing process, a large number of optical components of different types cause the cost of the instrument to be high, the energy loss of the current double-beam system is large, the electrical performance difference between different components cannot be eliminated, in addition, the light rays of different wavelengths are not accurately corrected, and the operation is complex.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a two beam optical system of spectrophotometer to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above purpose, the utility model provides a following technical scheme: a spectrophotometer dual beam optical system comprising:
light source assemblies including tungsten, deuterium and mercury lamps;
the light decomposition assembly comprises a first collimating mirror, a second collimating mirror and a grating, the first collimating mirror receives the light emitted by the light source assembly and reflects the light to the grating, and the grating reflects the light to the second collimating mirror;
the light splitting component comprises a chopper mirror, and the chopper mirror receives the light emitted by the light splitting component and then divides the light into two paths of light which are respectively emitted into a first reference light path and a second reference light path;
wherein the first reference light path and the second reference light path receive light and reflect the light to the photomultiplier tube after detecting the sample.
Preferably, the light source assembly further comprises a first reflector for focusing and refracting light emitted from the tungsten lamp, the deuterium lamp, and the mercury lamp.
Preferably, the first mirror is rotatable about its own axis.
Preferably, the light splitting assembly includes an entrance slit and an exit slit, and the light enters the first collimating lens through the entrance slit and exits from the exit slit through the second collimating lens.
Preferably, the light splitting assembly includes a second reflecting mirror and a third reflecting mirror, the second reflecting mirror receives the light and reflects the light to the second reflecting mirror, and the second reflecting mirror receives the light and reflects the light to the chopper mirror.
Preferably, the first reference light path and the second reference light path each include a fourth reflector, an incident protective lens, an exit protective lens, and a fifth reflector, which are sequentially disposed.
Preferably, the second reference light path further comprises a sixth mirror.
Preferably, a sample cell is arranged between the incident protective lens and the emergent protective lens.
Preferably, the first reference light path is parallel to the second reference light path.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the light source adopts a tungsten lamp, a deuterium lamp and a mercury lamp, the working wavelength range is wide, the wavelength precision is high after the mercury lamp is calibrated, and the index parameters of the instrument are greatly improved.
2. The chopper mirror is used as a reflecting device of the main light path and the reference light path, the energy loss is greatly reduced compared with that of a semi-transparent semi-reflecting mirror, and meanwhile, the same photomultiplier is used as a receiver, so that the cost is reduced, and the electrical performance difference between different components can be eliminated.
3. The photomultiplier is used as an energy receiving device, extremely weak energy and change can be detected, and the detection capability and index parameters of the instrument in ultraviolet wave bands are greatly improved.
4. Optical parts are plane mirrors or spherical mirrors, requirements on processing capacity are not high, and meanwhile most parts are repeatedly used in a light path, so that the types of the optical parts are optimized, and purchasing and production are facilitated.
5. The light path in the sample chamber is of a parallel structure, the process is simple, and the sample chamber is convenient for a user to operate and use and can also facilitate the processing and manufacturing of parts.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a tungsten lamp; 2. a deuterium lamp; 3. mercury lamps; 4. a first reflector; 5. an entrance slit; 6. a first collimating mirror; 7. a grating; 8. an exit slit; 9. a second collimating mirror; 10. a second reflector; 11. a third reflector; 12. a chopper mirror; 13. an incident protective lens; 14. emitting a protective lens; 15. a fifth mirror; 16. a sixth reflecting mirror; 17. a photomultiplier tube; 18. a fourth mirror; 19. a sample cell; 100. a light source assembly; 200. a light ray decomposition component; 300. a light splitting component; 500. a first reference optical path; 600. a second reference light path.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: the utility model provides a two optical system of spectrophotometer, including light source subassembly 100, light decomposes subassembly 200 and beam split subassembly 300, light source subassembly 100 can launch different wave bands, and can rectify different wavelengths, light that light decomposition subassembly 200 sent light source subassembly 100 forms the spectrum through decomposing, beam split subassembly 300 decomposes into two way light with light, then inject two way light into first reference light path 500 and second reference light path 600 respectively, behind first reference light path 500 and second reference light path 600, generate the testing result data, obtain the testing result.
In this embodiment, light source subassembly 100 includes tungsten lamp 1, deuterium lamp 2 and mercury lamp 3, tungsten lamp 1 is worked in the visible light wave band, deuterium lamp 2 is worked in the ultraviolet ray wave band, mercury lamp 3 is used for proofreading and correct the wavelength, light source subassembly 100 still includes first speculum 4, tungsten lamp 1, light that deuterium lamp 2 and mercury lamp 3 sent refracts to light decomposition component 200 after first speculum 4 focuses on, for the convenience of proofreading and correct, first speculum 4 sets up to rotatable formula, first speculum 4 can rotate by self axial centerline, with the wavelength of proofreading and correct light, wavelength precision is high after mercury lamp 3 calibrates, instrument index parameter improves by a wide margin.
In this embodiment, the light splitting assembly 200 includes an incident slit 5, an exit slit 8, a first collimating mirror 6, a second collimating mirror 9 and a grating 7, wherein light enters the grating 7 after entering the first collimating mirror 6 through the incident slit 5, the grating 7 splits a spectrum of the light and then refracts the light into the second collimating mirror 9, and the second collimating mirror 9 emits the light from the exit slit 8.
In this embodiment, light splitting assembly 300, including second mirror 10, third mirror 11 and chopper 12, after receiving light, second mirror 10 reflects light to second mirror 11, after receiving light, second mirror 11 reflects light to chopper 12, chopper 12 divides into two ways light after receiving light and injects first reference light path 500 and second reference light path 600 respectively and is used for carrying out sample detection, data feedback to photomultiplier 17 after first reference light path 500 and second reference light path 600 will detect the sample, adopt the photomultiplier as energy receiving element, can detect weak energy and change, the detection capability and the index parameter of instrument at the ultraviolet band have been greatly improved.
Further, the first reference light path 500 and the second reference light path 600 both include a fourth reflector 18, an incident protection lens 13, an emergent protection lens 14, and a fifth reflector 15, which are sequentially disposed, light is reflected by the fourth reflector 18, passes through the incident protection lens 13 and the emergent protection lens 14, and then is fed back to the photomultiplier 17, and the second reference light path 600 is provided with one more sixth reflector 16 than the first reference light path 500, so that the two reference light paths are kept in a parallel state, and the manufacturing process is simple, thereby facilitating the operation and use of a user and also facilitating the processing and manufacturing of parts, wherein a sample cell 19 is disposed between the incident protection lens 13 and the emergent protection lens 14.
It should be noted that the reflecting mirror in this embodiment is a plane mirror or a spherical mirror, and is set according to the light transmission requirement, for example, the second reflecting mirror 10, the third reflecting mirror 18, and the fifth reflecting mirror 15 are spherical reflecting mirrors, and the first reflecting mirror 4 and the sixth reflecting mirror 16 are planar reflecting mirrors, so that the setting requirement on the processing capability is not high, and meanwhile, most parts are repeatedly used in the light path, thereby optimizing the type of optical parts and facilitating purchasing and production.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a two optical system that restraint of spectrophotometer which characterized in that: the method comprises the following steps:
light source assemblies including tungsten, deuterium and mercury lamps;
the light decomposition assembly comprises a first collimating mirror, a second collimating mirror and a grating, the first collimating mirror receives the light emitted by the light source assembly and reflects the light to the grating, and the grating reflects the light to the second collimating mirror;
the light splitting component comprises a chopper mirror, and the chopper mirror receives the light emitted by the light splitting component and then divides the light into two paths of light which are respectively emitted into a first reference light path and a second reference light path;
wherein the first reference light path and the second reference light path receive light and reflect the light to the photomultiplier tube after detection of the sample.
2. A spectrophotometer dual beam optical system as claimed in claim 1, wherein: the light source assembly further comprises a first reflector, and the first reflector is used for focusing and refracting light rays emitted by the tungsten lamp, the deuterium lamp and the mercury lamp.
3. A spectrophotometer dual beam optical system as claimed in claim 2, wherein: the first mirror is rotatable about its own axis.
4. A spectrophotometer dual beam optical system as claimed in claim 3, wherein: the light ray decomposition component comprises an incident slit and an emergent slit, and light rays enter the first collimating mirror through the incident slit and are emitted from the emergent slit through the second collimating mirror.
5. A spectrophotometer dual beam optical system as claimed in claim 1, wherein: the light splitting assembly comprises a second reflector and a third reflector, the second reflector reflects light to the second reflector after receiving the light, and the second reflector reflects the light to the chopper after receiving the light.
6. A spectrophotometer dual beam optical system according to claim 1, wherein: the first reference light path and the second reference light path respectively comprise a fourth reflector, an incident protective lens, an emergent protective lens and a fifth reflector which are sequentially arranged.
7. A spectrophotometer dual beam optical system as claimed in claim 6, wherein: the second reference beam path further comprises a sixth mirror.
8. A spectrophotometer dual beam optical system according to claim 7, wherein: and a sample cell is arranged between the incident protective lens and the emergent protective lens.
9. A spectrophotometer dual beam optical system as claimed in claim 8, wherein: the first reference light path is parallel to the second reference light path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220629133.5U CN217638671U (en) | 2022-03-22 | 2022-03-22 | Double-beam optical system of spectrophotometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220629133.5U CN217638671U (en) | 2022-03-22 | 2022-03-22 | Double-beam optical system of spectrophotometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217638671U true CN217638671U (en) | 2022-10-21 |
Family
ID=83644766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220629133.5U Active CN217638671U (en) | 2022-03-22 | 2022-03-22 | Double-beam optical system of spectrophotometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217638671U (en) |
-
2022
- 2022-03-22 CN CN202220629133.5U patent/CN217638671U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Weber | Photoelectric method for the measurement of the polarization of the fluorescence of solutions | |
| US7787120B2 (en) | Spectrophotometer and liquid chromatography system | |
| CN211652548U (en) | High-sensitivity Raman spectrometer based on photomultiplier | |
| CN103499391A (en) | Spectrum measuring system | |
| CN103604773A (en) | Laser beam combiner for simultaneously detecting various types of gas of TDLAS (Tunable Diode Laser Absorption Spectroscopy) | |
| CN109765184A (en) | optical gas absorption cell and optical gas detection system | |
| He et al. | Simultaneous multi-laser, multi-species trace-level sensing of gas mixtures by rapidly swept continuous-wave cavity-ringdown spectroscopy | |
| Shen et al. | Fabry–Perot etalon-based ultraviolet trifrequency high-spectral-resolution lidar for wind, temperature, and aerosol measurements from 0.2 to 35 km altitude | |
| CN103499393A (en) | Spectrum measuring method | |
| CN116256338A (en) | Gas detection device and multi-component gas filtering inversion method thereof | |
| US10451479B2 (en) | Multichannel ultra-sensitive optical spectroscopic detection | |
| CN109520944A (en) | A kind of universal spectroscopic analysis system | |
| CN217638671U (en) | Double-beam optical system of spectrophotometer | |
| Kobylinskiy et al. | Folded beam path architecture for highly efficient filter-based spectral sensors | |
| CA3187130A1 (en) | Absorbance spectroscopy analyzer and method of use | |
| CN112903644A (en) | Ultra-wide range fluorescence quantitative analysis method and fluorescence measurement system | |
| CN112505016A (en) | Compact portable multi-wavelength in-situ Raman detector and detection method thereof | |
| CN104316629A (en) | Liquid phase multi-channel detector device | |
| Moral et al. | New double beam spectrophotometer for microsamples. Application to hydrostatic pressure experiments | |
| CN113566964A (en) | Spectral analysis device and system | |
| US20200025673A1 (en) | Gas analyzer and gas analysis method | |
| CN213986200U (en) | Raman spectrum excitation enhancement module | |
| CN211783862U (en) | Spectral analysis device and system | |
| CN112213297B (en) | Paraxial double-pulse LIBS system based on annular light beam | |
| CN219065268U (en) | Parallel double-beam optical system of spectrophotometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |