CN219871017U - Handheld Raman spectrometer - Google Patents
Handheld Raman spectrometer Download PDFInfo
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- CN219871017U CN219871017U CN202321194356.4U CN202321194356U CN219871017U CN 219871017 U CN219871017 U CN 219871017U CN 202321194356 U CN202321194356 U CN 202321194356U CN 219871017 U CN219871017 U CN 219871017U
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- 238000001069 Raman spectroscopy Methods 0.000 title claims abstract description 46
- 238000004458 analytical method Methods 0.000 claims abstract description 83
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 238000012423 maintenance Methods 0.000 claims abstract description 20
- 238000002955 isolation Methods 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 239000013307 optical fiber Substances 0.000 claims abstract description 13
- 230000002708 enhancing effect Effects 0.000 claims description 11
- 238000005286 illumination Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000001237 Raman spectrum Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The utility model discloses a handheld Raman spectrometer, which comprises an analysis working box, wherein a holding mechanism is arranged at the lower end of the analysis working box, a focusing mechanism is arranged at the left end of the analysis working box, and an analysis mechanism is arranged in an analysis conduction cavity; according to the utility model, the isolation pad sleeve, the handle barrel, the first focusing lens, the second focusing lens, the irradiation lens, the analysis working box, the focusing installation block, the movable focusing lens, the projection isolation frame and the laser generation power supply module are arranged, so that the laser emission convenience of the Raman spectrometer is improved, the convenience of use and maintenance of the Raman spectrometer is improved, the laser focusing accuracy and conversion convenience of the Raman spectrometer are improved, and the stability and reliability of laser detection and transmission of the Raman spectrometer are improved, and the convenience of use of the handheld Raman spectrometer is improved by arranging the analysis processing module, the receiving adjustment block, the receiving focusing lens, the transmission optical fiber seat and the double-sided receiving module.
Description
Technical Field
The utility model relates to the field of electron optical equipment, in particular to a handheld Raman spectrometer.
Background
Raman effect (raman scattering), also known as raman scattering, is found by indian physicist for one, two or eight years and refers to the phenomenon of the change in frequency of light waves after they are scattered; raman scattering refers to the energy transfer of molecules and photons in a substance when laser light with a certain frequency irradiates the surface of a sample, the vibration states (such as oscillation and twisting of atoms and oscillation and vibration of chemical bonds) are changed in different ways and degrees, and then light with different frequencies is scattered; the frequency change is determined by the characteristics of the scattering material, and the different atomic group vibration modes are unique, so that scattered light with specific difference from the frequency of the incident light can be generated, and the types of molecules composing the material can be identified according to the principle; in the prior art, a handheld Raman spectrometer has been developed to a more mature level along with the progress of technology in the aspects of identification and signal processing, but when some substances with more complex surface changes are detected, the intensity change of Raman scattering reception is more obvious, and the receiving processing of the scattered signals by the conventional handheld Raman spectrometer is carried out by means of focusing, refracting, reflecting and other optical element position change, so that the handheld Raman spectrometer is more inconvenient to operate in a more compact structural space;
in this regard, chinese patent publication No. CN209327218U discloses a raman spectrometer, which includes a housing enclosing a cavity, where a first space, a second space, and a third space are provided in the cavity, where a laser and a focusing mirror are disposed at two ends of the first space, a beam shaping lens and a filtering mirror are disposed between the laser and the focusing mirror, where the focusing lens and the first mirror are disposed in the second space, and where the filtering mirror, the focusing lens, and the first mirror are distributed along a straight line, and where a slit, a grating, and a charge-coupled element are disposed in the third space, and where the laser is rapidly conducted and dispersed by the cavity, so that both the collected and split imaging light paths are concentrated in one cavity, and the space size can be greatly reduced.
However, in the utility model, the raman scattering feedback signal of the detected substance has a complex detection and transmission structure, is complicated in maintenance and adjustment, and has low intensity of the received laser scattering signal, thereby affecting the detection efficiency and detection result.
Disclosure of Invention
The present utility model is directed to a handheld raman spectrometer, which solves the problems set forth in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the handheld Raman spectrometer comprises an analysis working box, wherein an analysis conduction cavity is arranged in the analysis working box, a holding mechanism is arranged at the lower end of the analysis working box, a focusing mechanism is arranged at the left end of the analysis working box, and an analysis mechanism is arranged in the analysis conduction cavity;
the holding mechanism can hold the whole device and excite the detection laser, the focusing mechanism can focus the detection laser, and the analysis mechanism can strengthen the detection laser and analyze the Raman scattering feedback signal.
The holding mechanism comprises a handle barrel fixedly connected to the lower end face of the analysis working box, and a maintenance cavity is formed in the handle barrel;
the maintenance cavity is internally and fixedly connected with a first focusing lens, the maintenance cavity is rotationally connected with a laser generation power supply module, and the lower end of the handle cylinder is rotationally connected with an isolation pad sleeve;
and a second focusing lens is fixedly connected in the lower end wall of the analysis conducting cavity, and the positions of the maintenance cavity and the second focusing lens are mutually corresponding.
The focusing mechanism comprises a projection isolation frame fixedly connected in the lower end wall of the analysis conducting cavity, and a focusing mounting block is connected in the left end wall of the analysis conducting cavity in a sliding manner;
the movable focusing lens is positioned at the lower side of the projection isolation frame, the irradiation lens is fixedly connected in the upper end wall of the analysis conduction cavity, and the position of the irradiation lens corresponds to the position of the second focusing lens.
The analysis mechanism comprises a receiving focusing lens fixedly connected in the upper end wall of the analysis conducting cavity, wherein the receiving focusing lens is positioned on the right side of the irradiation lens, and an analysis processing module is fixedly connected in the right end wall of the analysis conducting cavity;
the right end wall of the analysis conducting cavity is slidably connected with a receiving adjusting block, the left end face of the receiving adjusting block is fixedly connected with a double-sided receiving module, the double-sided receiving module is positioned at the lower side of the receiving focusing lens, the right end of the double-sided receiving module is fixedly connected with a transmission optical fiber seat, and the transmission optical fiber seat is mutually communicated with the analysis processing module through optical fibers;
and a reflection strengthening lens is fixedly connected between the front end wall and the rear end wall of the analysis conducting cavity, the positions of the reflection strengthening lens, the movable focusing lens and the irradiation lens are mutually matched, and the reflection strengthening lens and the double-sided receiving module are mutually matched on a laser reflection route.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the isolation pad sleeve, the handle barrel, the first focusing lens, the second focusing lens, the irradiation lens, the analysis working box, the focusing installation block, the movable focusing lens, the projection isolation frame and the laser generation power supply module are arranged, so that after the laser generation power supply module excites the Raman detection light source to pass through the first focusing lens and the second focusing lens, the movable focusing lens arranged on the focusing installation block is matched with the projection isolation frame, the excited light source is focused and projected to pass through the irradiation lens to analyze an object to be detected, thereby improving the laser emission convenience of the Raman spectrometer, improving the use and maintenance convenience of the Raman spectrometer, improving the laser focusing accuracy and conversion convenience of the Raman spectrometer, improving the sealing property of the internal space of the handheld Raman spectrometer and prolonging the service life;
through setting up analysis processing module, receive the adjusting block, receive focusing lens, transmission fiber seat and two-sided receiving module, can be after receiving the adjusting block and driving two-sided receiving module and slide the position in analysis working box, carry out multiaspect receipt detection with receiving focusing lens projected feedback light and reflection enhancement lens reflection enhancement's feedback light to detect analysis in analysis processing module through transmission fiber seat conduction, improved raman spectrometer and detected laser stability and reliability, improved raman laser and detected the stability of transmission, improved handheld raman spectrometer's convenience of use.
Drawings
FIG. 1 is a schematic view of a three-dimensional structure of the present utility model;
FIG. 2 is a schematic diagram of the overall structure of the present utility model;
FIG. 3 is a schematic left-hand view of FIG. 2 in accordance with the present utility model;
FIG. 4 is a right side view of the illustration of FIG. 2 in accordance with the present utility model;
FIG. 5 is a schematic view of the internal structure of the present utility model;
FIG. 6 is a schematic top view of FIG. 2 in accordance with the present utility model;
FIG. 7 is an enlarged partial schematic view of the focus mount of FIG. 5 in accordance with the present utility model;
fig. 8 is an enlarged partial schematic view of the utility model at the receiving adjustment block of fig. 5.
In the figure: 11. a holding mechanism; 12. a focusing mechanism; 13. an analysis mechanism; 15. an analysis working box; 16. analyzing the conduction cavity; 17. a first focusing lens; 18. a maintenance cavity; 19. a laser generating power module; 20. a handle barrel; 21. a spacer sleeve; 22. a focus mounting block; 23. projecting an isolation frame; 24. a reflection enhancing lens; 25. a receiving focusing lens; 26. a double-sided receiving module; 27. a movable focusing lens; 28. receiving an adjusting block; 29. an analysis processing module; 30. a second focusing lens; 31. a transmission optical fiber seat; 32. the lens is illuminated.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1:
referring to fig. 1-8, the present utility model provides a technical solution: the handheld Raman spectrometer comprises an analysis working box 15, wherein an analysis conducting cavity 16 is arranged in the analysis working box 15, a holding mechanism 11 is arranged at the lower end of the analysis working box 15, a focusing mechanism 12 is arranged at the left end of the analysis working box 15, and an analysis mechanism 13 is arranged in the analysis conducting cavity 16;
the holding mechanism 11 can hold the whole device and excite the detection laser, the focusing mechanism 12 can focus the detection laser, the analysis mechanism 13 can strengthen the detection laser and analyze the Raman scattering feedback signal, the holding isolation pad sleeve 21 drives the handle cylinder 20 and the analysis working box 15 to integrally act, the first focusing lens 17 is fixedly arranged in the maintenance cavity 18, and then the laser generation power supply module 19 is rotationally arranged at a proper position in the maintenance cavity 18.
The holding mechanism 11 comprises a handle barrel 20 fixedly connected to the lower end surface of the analysis working box 15, and a maintenance cavity 18 is arranged in the handle barrel 20;
the maintenance cavity 18 is internally and fixedly connected with a first focusing lens 17, the maintenance cavity 18 is rotatably connected with a laser generation power supply module 19, and the lower end of the handle cylinder 20 is rotatably connected with an isolation pad sleeve 21;
a second focusing lens 30 is fixedly connected in the lower end wall of the analysis conducting cavity 16, and the positions of the maintenance cavity 18 and the second focusing lens 30 correspond to each other.
The focusing mechanism 12 comprises a projection isolation frame 23 fixedly connected in the lower end wall of the analysis conducting cavity 16, and a focusing mounting block 22 is connected in the left end wall of the analysis conducting cavity 16 in a sliding manner;
the right end face of the focusing installation block 22 is fixedly connected with a movable focusing lens 27, the movable focusing lens 27 is positioned at the lower side of the projection isolation frame 23, an irradiation lens 32 is fixedly connected in the upper end wall of the analysis conducting cavity 16, the position of the irradiation lens 32 corresponds to that of the second focusing lens 30, different movable focusing lenses 27 are fixedly installed on the focusing installation block 22, and then slide into the projection isolation frame 23 in the left end wall of the analysis conducting cavity 16.
The analysis mechanism 13 comprises a receiving focusing lens 25 fixedly connected in the upper end wall of the analysis conducting cavity 16, the receiving focusing lens 25 is positioned on the right side of the irradiation lens 32, and an analysis processing module 29 is fixedly connected in the right end wall of the analysis conducting cavity 16;
a receiving adjusting block 28 is slidably connected to the right end wall of the analysis conducting cavity 16, a double-sided receiving module 26 is fixedly connected to the left end surface of the receiving adjusting block 28, the double-sided receiving module 26 is located at the lower side of the receiving focusing lens 25, a transmission optical fiber seat 31 is fixedly connected to the right end of the double-sided receiving module 26, and the transmission optical fiber seat 31 is mutually communicated with the analysis processing module 29 through optical fibers;
the reflection enhancing lens 24 is fixedly connected between the front end wall and the rear end wall of the analysis conducting cavity 16, the reflection enhancing lens 24 is matched with the movable focusing lens 27 and the irradiation lens 32 in position, the reflection enhancing lens 24 is matched with the double-sided receiving module 26 on a laser reflection route, laser emitted by the laser generating power supply module 19 passes through the first focusing lens 17 and the second focusing lens 30, and then enters the irradiation lens 32 through the reflection enhancing lens 24 after being focused by the movable focusing lens 27, the fed-back laser is emitted outside the device, passes through the receiving focusing lens 25, is detected by the double-sided receiving module 26, is reflected to the double-sided receiving module 26 in an enhanced mode under the reflection effect of the reflection enhancing lens 27, and is then transmitted to the analysis processing module 29 for analysis processing after the conversion processing of the transmission optical fiber seat 31.
Working principle:
when in use, the handle cylinder 20 and the analysis working box 15 are driven to integrally act by holding the isolation pad sleeve 21, the first focusing lens 17 is fixedly arranged in the maintenance cavity 18, and then the laser generating power supply module 19 is rotationally arranged at a proper position in the maintenance cavity 18, so that preassembling is completed;
when the different focusing intensities of the Raman scattering detection laser are changed, different movable focusing lenses 27 are fixedly arranged on the focusing installation block 22 according to the focusing intensity requirement, and then slide into the projection isolation frame 23 in the left end wall of the analysis conducting cavity 16 to finish loading;
during raman scattering detection signal processing, after passing through the first focusing lens 17 and the second focusing lens 30, laser emitted by the laser generating power module 19 is incident into the irradiation lens 32 through the reflection enhancing lens 24 under the focusing of the movable focusing lens 27, and irradiates on the surface of the detection substance, at this time, raman scattering occurs on the surface of the object, the scattered and fed back laser is emitted outside the device, passes through the receiving focusing lens 25, and is detected by the double-sided receiving module 26, and the raman scattering feedback light source reflected by the irradiation lens 32 is enhanced and reflected onto the double-sided receiving module 26 under the reflection effect of the reflection enhancing lens 24 for detection, and then is transmitted to the analysis processing module 29 for analysis processing after the conversion processing of the transmission optical fiber seat 31, so as to complete raman spectrum analysis detection.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The handheld Raman spectrometer comprises an analysis working box (15), and is characterized in that an analysis conducting cavity (16) is arranged in the analysis working box (15), a holding mechanism (11) is arranged at the lower end of the analysis working box (15), a focusing mechanism (12) is arranged at the left end of the analysis working box (15), and an analysis mechanism (13) is arranged in the analysis conducting cavity (16);
the holding mechanism (11) can hold the whole device and excite the detection laser, the focusing mechanism (12) can focus the detection laser, and the analyzing mechanism (13) can strengthen the detection laser and analyze the Raman scattering feedback signal.
2. A hand-held raman spectrometer according to claim 1, characterized in that the gripping means (11) comprises a handle cylinder (20) fixedly connected to the lower end surface of the analysis working box (15), a maintenance cavity (18) being provided in the handle cylinder (20).
3. A hand-held raman spectrometer according to claim 2, characterized in that the maintenance cavity (18) is fixedly connected with a first focusing lens (17), the maintenance cavity (18) is rotationally connected with a laser generating power module (19), and the lower end of the handle cylinder (20) is rotationally connected with an isolation pad sleeve (21).
4. A hand-held raman spectrometer according to claim 2, characterized in that a second focusing lens (30) is fixedly connected in the lower end wall of said analysis conducting cavity (16), and the positions of said maintenance cavity (18) and said second focusing lens (30) correspond to each other.
5. A hand-held raman spectrometer according to claim 4, wherein the focusing mechanism (12) comprises a projection isolation frame (23) fixedly connected in the lower end wall of the analysis conducting cavity (16), and a focusing mounting block (22) is slidingly connected in the left end wall of the analysis conducting cavity (16).
6. The handheld raman spectrometer according to claim 5, wherein a movable focusing lens (27) is fixedly connected to the right end face of the focusing mounting block (22), the movable focusing lens (27) is located at the lower side of the projection isolation frame (23), an irradiation lens (32) is fixedly connected to the inside of the upper end wall of the analysis conducting cavity (16), and the position of the irradiation lens (32) corresponds to that of the second focusing lens (30).
7. A hand-held raman spectrometer according to claim 6, characterized in that said analysis means (13) comprise a receiving focusing lens (25) fixedly connected in the upper end wall of said analysis conducting cavity (16), said receiving focusing lens (25) being located on the right side of said illumination lens (32), an analysis processing module (29) being fixedly connected in the right end wall of said analysis conducting cavity (16).
8. The handheld raman spectrometer according to claim 7, characterized in that a receiving adjustment block (28) is slidably connected to the right end wall of the analysis conducting cavity (16), a double-sided receiving module (26) is fixedly connected to the left end surface of the receiving adjustment block (28), the double-sided receiving module (26) is located at the lower side of the receiving focusing lens (25), a transmission optical fiber seat (31) is fixedly connected to the right end of the double-sided receiving module (26), and the transmission optical fiber seat (31) is mutually communicated with the analysis processing module (29) through optical fibers.
9. A hand-held raman spectrometer according to claim 8, characterized in that a reflection enhancing lens (24) is fixedly connected between the front and rear end walls of said analysis conducting cavity (16), said reflection enhancing lens (24) is mutually matched with the positions of said movable focusing lens (27) and said irradiation lens (32), and said reflection enhancing lens (24) is mutually matched with said double-sided receiving module (26) on the reflection route of laser light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321194356.4U CN219871017U (en) | 2023-05-17 | 2023-05-17 | Handheld Raman spectrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321194356.4U CN219871017U (en) | 2023-05-17 | 2023-05-17 | Handheld Raman spectrometer |
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| Publication Number | Publication Date |
|---|---|
| CN219871017U true CN219871017U (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321194356.4U Active CN219871017U (en) | 2023-05-17 | 2023-05-17 | Handheld Raman spectrometer |
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| CN (1) | CN219871017U (en) |
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- 2023-05-17 CN CN202321194356.4U patent/CN219871017U/en active Active
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