Raman spectrometer

Abstract

The utility model discloses a Raman spectrometer, and belongs to the field of Raman spectrum detection.The Raman spectrometer comprises a Raman spectrometer body, a laser diode arranged in the Raman spectrometer body and a smart phone arranged on the Raman spectrometer body, and a camera is arranged on the smart phone; one end of the Raman spectrometer body is provided with a supporting structure for placing an object to be detected, and the supporting structure comprises an object placing plate connected with the Raman spectrometer body, an object placing groove formed in the object placing plate, and a shading plate hinged to one end, close to an opening of the object placing groove, of the object placing plate. When the to-be-detected article is detected, the to-be-detected article is placed in the placement groove, so that the detection distance between the to-be-detected article and the Raman spectrometer body can be always kept consistent in the process of detecting the to-be-detected article; the detection signal strength and stability can be improved, the spectral resolution is improved, the measurement error is reduced, and the operation process can be simplified for measurement of the same object.

Description

Technical Field

[0001] The present application relates to the field of Raman spectroscopy detection technology, and in particular to a Raman spectrometer. Background Art

[0002] With technological advancements, portable Raman spectrometers, as a rapid, non-destructive analytical tool, have shown tremendous potential in materials science, chemical analysis, biomedicine, food safety, public safety, and other fields. Their portability enables on-site, immediate testing, greatly improving both efficiency and detection range.

[0003] When existing portable Raman spectrometers are used for handheld inspection, even slight jitter or positional shifts can cause significant changes in the spectral signal, affecting the accuracy and repeatability of the test results. This instability is particularly pronounced in complex outdoor environments or when rapidly scanning multiple samples.

[0004] Therefore, the present application provides a Raman spectrometer to solve the above problems. Utility Model Content

[0005] The present application provides a Raman spectrometer, which aims to solve the problems raised in the background art, such as the difficulty for users to keep their hands absolutely stable for a long time in the handheld operation environment of existing Raman spectrometers, thereby affecting the accuracy and repeatability of the detection results.

[0006] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a Raman spectrometer, comprising a Raman spectrometer body, a laser diode disposed inside the Raman spectrometer body, and a smartphone disposed on the Raman spectrometer body, wherein the smartphone is provided with a camera;

[0007] To facilitate the positioning of the object to be detected, a support structure for placing the object to be detected is provided at one end of the Raman spectrometer body. The support structure includes a storage plate connected to the Raman spectrometer body, a storage slot provided on the storage plate, and a light shield hinged to one end of the storage plate near the opening of the storage slot. When the object to be detected is detected, by placing the object to be detected inside the storage slot, the detection distance between the object to be detected and the Raman spectrometer body can be ensured to remain consistent during the detection process. This can improve the detection signal strength and stability, improve the spectral resolution, reduce measurement errors, and simplify the operation process for measuring the same object. Due to the improvement in signal strength, stability and resolution, and the reduction in measurement errors, the fixed detection distance can significantly improve the quality of Raman spectral data.

[0008] Preferably, to prevent external factors from influencing the detection data of the item to be inspected, a threaded barrel is fixedly connected to the end of the storage plate near the Raman spectrometer body, which communicates with the interior of the storage slot for allowing light to enter. One end of the Raman spectrometer body is provided with an internally threaded hole that threadably engages with the threaded barrel for allowing light from within the Raman spectrometer body to exit. When inspecting the item to be inspected, the threaded barrel and the internally threaded hole can be used to connect the storage plate to the Raman spectrometer body, placing the detection channel within the pipe and preventing the influence of external dust. The threaded connection also facilitates installation and removal of the storage plate and the Raman spectrometer body, making them more convenient to carry.

[0009] Preferably, the interior of the Raman spectrometer body is provided with a concave lens, a filter, a dichroic mirror, a grating and a second-order filter along the axis of the internal threaded hole from near to far, black light-blocking plates are symmetrically arranged on both sides of the filter, the laser diode is arranged between the two black light-blocking plates and corresponds to the dichroic mirror, and the second-order filter is arranged corresponding to the camera.

[0010] Preferably, to prevent the object to be detected from moving within the storage slot, a fastening mechanism for securing the position of the object to be detected is provided within the storage slot. The fastening mechanism includes a fixed plate slidably disposed within the storage slot, a guide rod symmetrically slidably inserted into the fixed plate and fixedly connected to the inner wall of the storage slot, and a fastening spring sleeved on the guide rod for axial movement to drive the fixed plate toward the Raman spectrometer body. After the object to be detected is installed within the storage slot by overcoming the elastic force of the fastening spring, the elastic force of the fastening spring can push the fixed plate to move the object to be detected in a direction closer to the Raman spectrometer body, thereby ensuring that the object to be detected is stably placed within the storage slot.

[0011] Preferably, to prevent friction between the object to be detected and the guide rod, a clamping plate is symmetrically fixedly connected to one end of the fixing plate near the Raman spectrometer body to prevent friction between the object to be detected and the guide rod. The clamping plate can be used to place the object to be detected between the two clamping plates to prevent friction between the object to be detected and the guide rod.

[0012] Preferably, to facilitate smartphone installation, the Raman spectrometer body is provided with a fixing mechanism for securing the smartphone. The fixing mechanism includes a clamping plate symmetrically arranged on the Raman spectrometer body and engaging with both sides of the smartphone, a slide groove provided in the Raman spectrometer body, a guide rod fixedly connected to the slide groove, a slider symmetrically slidingly mounted on the guide rod and fixedly connected to the clamping plate, and a traction spring mounted between two corresponding sliders on the guide rod. The fixing mechanism enables the smartphone to be detachably mounted on the Raman spectrometer body, facilitating assembly and disassembly of the smartphone and the Raman spectrometer body, and facilitating replacement of the smartphone or the Raman spectrometer body.

[0013] When inspecting an object to be inspected, by placing the object to be inspected inside the placement slot, the detection distance between the object to be inspected and the Raman spectrometer body can be ensured to always remain consistent during the inspection process. This can improve the detection signal strength and stability, improve the spectral resolution, reduce measurement errors, and simplify the operating process for measuring the same object. Due to the improvement in signal strength, stability and resolution, and the reduction in measurement errors, a fixed detection distance can significantly improve the quality of Raman spectral data. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the structure of a Raman spectrometer;

[0015] Figure 2 It is a structural diagram of the supporting mechanism;

[0016] Figure 3 It is a structural diagram of the fixing mechanism;

[0017] Figure 4 for Figure 1 A side cross-sectional view of some of the structures in .

[0018] In the picture:

[0019] 1. Raman spectrometer body; 11. Internal threaded hole; 12. Concave lens; 13. Filter; 14. Dichroic mirror; 15. Grating; 16. Second-order filter; 17. Black light-blocking plate; 2. Laser diode; 3. Smartphone; 31. Camera; 4. Support structure; 41. Storage plate; 411. Threaded barrel; 42. Storage slot; 43. Light shield; 5. Fastening mechanism; 51. Fixing plate; 511. Clamping plate; 52. Guide rod; 53. Fastening spring; 6. Fixing mechanism; 61. Card plate; 62. Slide groove; 63. Guide rod; 64. Slider; 65. Traction spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0021] Example 1

[0022] This embodiment provides a Raman spectrometer, such as Figure 1-4 As shown, the Raman spectrometer includes a Raman spectrometer body 1, a laser diode 2 arranged inside the Raman spectrometer body 1, and a smart phone 3 arranged on the Raman spectrometer body 1, and a camera 31 is provided on the smart phone 3; wherein, the interior of the Raman spectrometer body 1 is provided with a concave lens 12, a filter 13, a dichroic mirror 14, a grating 15 and a second-order filter 16 along the axis of the internal threaded hole 11 from near to far, respectively, and black light-blocking plates 17 are symmetrically arranged on both sides of the filter 13. The laser diode 2 is arranged between the two black light-blocking plates 17 and corresponds to the dichroic mirror 14, and the second-order filter 16 is arranged corresponding to the camera 31. During use, the laser light emitted by the laser diode 2 is irradiated onto the dichroic mirror 14 along the space between the two black light-blocking plates 17, and then reflected by the dichroic mirror 14 to the filter 13 and irradiated onto the concave lens 12. After being focused and collimated by the concave lens 12, the laser light is irradiated onto the object to be detected, and then reflected back to the concave lens 12 and the filter 13 by the object to be detected. The stray light is filtered by the filter 13, and then reaches the grating 15 through the dichroic mirror 14. The Raman scattered light is expanded by the grating 15, and then the Raman scattered light passes through the grating 15 to reach the second-order filter 16. The range of the second-order filter 16 is much larger than the magnification range of the grating 15. The expanded Raman scattered light is emitted from the second-order filter 16 to the camera 31 of the smartphone 3.

[0023] In order to facilitate the fixing of the position of the object to be detected, a support structure 4 for placing the object to be detected is provided at one end of the Raman spectrometer body 1. The support structure 4 includes a placement plate 41 connected to the Raman spectrometer body 1, a placement slot 42 provided on the placement plate 41, and a light shielding plate 43 hinged to one end of the placement plate 41 near the opening of the placement slot 42. When the object to be detected is detected, by placing the object to be detected inside the placement slot, the detection distance between the object to be detected and the Raman spectrometer body 1 can be ensured to remain consistent during the detection process. This can improve the detection signal strength and stability, improve the spectral resolution, reduce measurement errors, and simplify the operation process for measuring the same object. Due to the improvement in signal strength, stability and resolution, and the reduction in measurement errors, the fixed detection distance can significantly improve the quality of Raman spectral data.

[0024] Specifically, to prevent external factors from influencing the detection data of the object to be inspected, a threaded barrel 411 is fixedly connected to the end of the storage plate 41 near the Raman spectrometer body 1, which communicates with the interior of the storage slot 42 for allowing light to pass through. An internally threaded hole 11 is formed at one end of the Raman spectrometer body 1, which is threadedly engaged with the threaded barrel 411 for allowing light from within the Raman spectrometer body 1 to escape. When inspecting the object to be inspected, the threaded engagement between the threaded barrel 411 and the internally threaded hole 11 allows the storage plate 41 to be connected to the Raman spectrometer body 1, placing the detection channel within the pipe and preventing the influence of external dust. The threaded connection also facilitates installation and removal of the storage plate 41 and the Raman spectrometer body 1, making them more convenient to carry.

[0025] Furthermore, to prevent the object to be detected from moving within the storage slot 42, a fastening mechanism 5 for fixing the position of the object to be detected is provided inside the storage slot 42. The fastening mechanism 5 includes a fixing plate 51 slidably provided inside the storage slot 42, a guide rod 52 symmetrically slidably inserted into the fixing plate 51 and fixedly connected to the inner wall of the storage slot 42, and a fastening spring 53 sleeved on the guide rod 52 for axial movement to drive the fixing plate 51 to move closer to the Raman spectrometer body 1. After the elastic force of the fastening spring 53 is overcome and the object to be detected is installed inside the storage slot 42, the elastic force of the fastening spring 53 can push the fixing plate 51 to move the object to be detected in the direction closer to the Raman spectrometer body 1, thereby ensuring that the object to be detected is stably placed inside the storage slot 42.

[0026] Furthermore, to prevent friction between the object to be detected and the guide rod 52, a clamping plate 511 is symmetrically fixedly connected to one end of the fixing plate 51 near the Raman spectrometer body 1 to prevent friction between the object to be detected and the guide rod 52. The clamping plates 511 can be used to place the object to be detected between the two clamping plates 511, thereby preventing friction between the object to be detected and the guide rod 52.

[0027] Example 2

[0028] Unlike Example 1, (if the smartphone 3 is damaged, the smartphone 3 may not be able to be tested). To this end, the Raman spectrometer body 1 is provided with a fixing mechanism 6 for fixing the smartphone 3. The fixing mechanism 6 includes a clamping plate 61 symmetrically arranged on the Raman spectrometer body 1 and clamped to both sides of the smartphone 3, a slide 62 provided on the Raman spectrometer body 1, a guide rod 63 fixedly connected to the slide 62, a slider 64 symmetrically slidably mounted on the guide rod 63 and fixedly connected to the clamping plate 61, and a traction spring 65 mounted on the guide rod 63 between the two corresponding sliders 64. The fixing mechanism 6 allows the smartphone 3 to be detachably mounted on the Raman spectrometer body 1, facilitating assembly or disassembly of the smartphone 3 and the Raman spectrometer body 1, and facilitating replacement of the smartphone 3 or the Raman spectrometer body 1. When in use, the smartphone 3 is inserted between the two card plates 61. The smartphone 3 will squeeze the two card plates 61 to move in opposite directions. The card plates 61 drive the slider 64 to move along the outside of the guide rod 63. While the slider 64 moves, it pulls the traction spring 65, so that the traction spring 65 is in a stretched state. Then, the elastic force of the spring makes the two card plates 61 stably clamped on both sides of the smartphone 3, ensuring the stability of the installation of the smartphone 3.

[0029] The above is only a preferred specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and concept of the present application within the technical scope disclosed in the present application, and they should be covered by the scope of protection of the present application.

Claims

1. A Raman spectrometer, comprising a Raman spectrometer body (1), a laser diode (2) arranged inside the Raman spectrometer body (1), and a smart phone (3) arranged on the Raman spectrometer body (1), wherein the smart phone (3) is provided with a camera (31); Its characteristics are: A support structure (4) for placing an object to be detected is provided at one end of the Raman spectrometer body (1), the support structure (4) comprising a placement plate (41) connected to the Raman spectrometer body (1), a placement slot (42) provided on the placement plate (41), and a light shielding plate (43) hinged to one end of the placement plate (41) near the opening of the placement slot (42).

2. The Raman spectrometer according to claim 1, wherein: A threaded barrel (411) is fixedly connected to one end of the storage plate (41) close to the Raman spectrometer body (1) and is communicated with the interior of the storage slot (42) for allowing light to pass through. An internal threaded hole (11) is provided at one end of the Raman spectrometer body (1) and is threadedly connected to the threaded barrel (411) for allowing light inside the Raman spectrometer body (1) to escape.

3. The Raman spectrometer according to claim 1, wherein: The interior of the Raman spectrometer body (1) is provided with a concave lens (12), a filter (13), a dichroic mirror (14), a grating (15) and a second-order filter (16) along the axis of the internal threaded hole (11) from near to far, black light-blocking plates (17) are symmetrically provided on both sides of the filter (13), the laser diode (2) is provided between the two black light-blocking plates (17) and corresponds to the dichroic mirror (14), and the second-order filter (16) is provided corresponding to the camera (31).

4. The Raman spectrometer according to claim 1, wherein: A fastening mechanism (5) for fixing the position of an object to be detected is provided inside the storage slot (42), and the fastening mechanism (5) comprises a fixing plate (51) slidably provided inside the storage slot (42), a guide rod (52) symmetrically slidably plugged into the fixing plate (51) and fixedly connected to the inner wall of the storage slot (42), and a fastening spring (53) sleeved on the guide rod (52) and axially moving for driving the fixing plate (51) to move close to the Raman spectrometer body (1).

5. The Raman spectrometer according to claim 4, wherein: One end of the fixing plate (51) close to the Raman spectrometer body (1) is symmetrically fixedly connected with a clamping plate (511) for preventing friction between the object to be detected and the guide rod (52).

6. The Raman spectrometer according to claim 1, wherein: The Raman spectrometer body (1) is provided with a fixing mechanism (6) for fixing the smart phone (3), and the fixing mechanism (6) comprises a card plate (61) symmetrically arranged on the Raman spectrometer body (1) and clamped on both sides of the smart phone (3), a slide groove (62) provided on the Raman spectrometer body (1), a guide rod (63) fixedly connected to the slide groove (62), a slider (64) symmetrically slidably mounted on the guide rod (63) and fixedly connected to the card plate (61), and a traction spring (65) mounted between two corresponding sliders (64) on the guide rod (63).

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