A high efficiency raman spectrometer

Abstract

The utility model discloses a kind of high-efficiency Raman spectrometer, it is related to Raman spectrometer technical field, including bottom plate and laser emission device, the laser emission device is set to the top of bottom plate, the bottom of the laser emission device is provided with microscopic objective lens, the top of bottom plate is below microscopic objective lens and is provided with sample stage, the top of bottom plate is provided with the focusing component for adjusting the position of sample stage, the focusing component includes the Z-axis adjustment component for adjusting the Z direction of sample stage, the X-axis adjustment component for adjusting the X direction of sample stage and the Y-axis adjustment component for adjusting the Y direction of sample stage, the vertical height and horizontal direction of sample stage are adjusted by Z-axis adjustment component, X-axis adjustment component and Y-axis adjustment component in focusing component, so that sample surface is accurately focused on laser focal point, ensure laser focusing accuracy, improve the efficiency of detection.

Description

Technical Field

[0001] This utility model relates to the field of Raman spectrometer technology, specifically to a high-efficiency Raman spectrometer. Background Technology

[0002] Raman spectroscopy is an optical analytical instrument based on the Raman scattering effect. It is widely used in chemistry, materials science, biomedicine, pharmaceuticals, and forensic science for the identification of substances, structural analysis, and non-destructive testing. Its core principle is that when a monochromatic laser illuminates a sample, photons undergo inelastic collisions with molecules, generating Raman scattered light with a shifted frequency. By analyzing the frequency shift of the scattered light, information about molecular vibrations and rotations can be obtained, thereby determining the chemical composition and molecular structure of the sample.

[0003] Patent document CN211179538U discloses a focusing platform device for a Raman spectrometer, including a fixed substrate, a transverse slide, a Y-axis operating stage, and a sample stage. By setting the transverse slide and the Y-axis operating stage, the device achieves the advantages of convenient operation, high efficiency, and low cost. Adjusting the transverse slide and the Y-axis operating stage allows the sample to be moved slightly in the forward, backward, left, and right directions along the laser optical axis. The first and second scales installed on the slide serve as orientation references, enabling the sample surface to be precisely focused on the laser focal point. This device is suitable for detecting solid, liquid, and powder samples.

[0004] In use, the aforementioned patent document describes how adjusting the transverse slide and Y-axis operating stage allows the sample to move along the X and Y axes, facilitating focusing. However, the patent document lacks adjustment in the Z-axis direction, and adjustments based solely on the X and Y axes cannot compensate for differences in sample thickness or objective lens working distance, potentially causing the laser focus to deviate from the sample surface. Utility Model Content

[0005] To address the aforementioned issues, a high-efficiency Raman spectrometer is provided. By incorporating a focusing component for adjusting the position of the sample stage, the technical problem of not being able to accurately focus the sample surface on the laser focal point is solved.

[0006] To address the problems of existing technologies, this utility model provides a high-efficiency Raman spectrometer, including a base plate and a laser emitting device. The laser emitting device is disposed on the top of the base plate, and a microscope objective is disposed at the bottom of the laser emitting device. A sample stage is disposed on the top of the base plate below the microscope objective. A focusing component for adjusting the position of the sample stage is disposed on the top of the base plate. The focusing component includes a Z-axis adjustment component for adjusting the Z-direction of the sample stage, an X-axis adjustment component for adjusting the X-direction of the sample stage, and a Y-axis adjustment component for adjusting the Y-direction of the sample stage. A clamping assembly for clamping the sample is also disposed on the top of the sample stage.

[0007] Preferably, the Z-axis adjustment component includes a fixed column, a first motor, and a moving block; the fixed column is disposed on the top of the base plate, located on one side of the microscope objective, and a first threaded rod is vertically disposed inside the fixed column; the first motor is disposed on the top of the fixed column, and the output end of the first motor is connected to one end of the first threaded rod; the moving block is threaded onto the first threaded rod, and a moving plate is disposed on one side of the moving block; the top of the moving plate is connected to the bottom of the X-axis adjustment component, the top of the X-axis adjustment component is connected to the bottom of the Y-axis adjustment component, and the top of the Y-axis adjustment component is connected to the bottom of the sample stage.

[0008] Preferably, the Z-axis adjustment component includes a fixed column, a first motor, and a moving block; the fixed column is disposed on the top of the base plate, located on one side of the microscope objective, and a first threaded rod is vertically disposed inside the fixed column; the first motor is disposed on the top of the fixed column, and the output end of the first motor is connected to one end of the first threaded rod; the moving block is threaded onto the first threaded rod, and a moving plate is disposed on one side of the moving block; the top of the moving plate is connected to the bottom of the X-axis adjustment component, the top of the X-axis adjustment component is connected to the bottom of the Y-axis adjustment component, and the top of the Y-axis adjustment component is connected to the bottom of the sample stage.

[0009] Preferably, the X-axis adjustment component includes a first support frame, an X-direction drive block, a first slide rail, and a connecting plate; the first support frame is disposed on the top of the movable plate, a second threaded rod is disposed inside the first support frame, a second motor is disposed on one side of the first support frame, and the output end of the second motor is connected to one end of the second threaded rod; the X-direction drive block is threadedly connected to the second threaded rod; the first slide rail is disposed on the movable plate and located on both sides of the first support frame, and a first slider is slidably disposed on the first slide rail; the connecting plate is disposed on the top of the X-direction drive block, and the bottom of the connecting plate is connected to the top of the first slider.

[0010] Preferably, the Y-axis adjustment component includes a second support frame, a Y-direction drive block, and a second slide rail; the second support frame is disposed on the top of the connecting plate, a third threaded rod is disposed inside the second support frame, a third motor is disposed on one side of the second support frame, and the output end of the third motor is connected to one end of the third threaded rod; the Y-direction drive block is threaded onto the third threaded rod, and the sample stage is disposed on the top of the Y-direction drive block; the second slide rail is disposed on the connecting plate and located on both sides of the second support frame, a second slider is slidably disposed on the second slide rail, and the top of the second slider is connected to the bottom of the sample stage.

[0011] Preferably, a light rod is provided on the top of the base plate on the side of the movable plate away from the fixed column, a limit plate is provided at the top of the light rod, a sliding block is slidably provided on the light rod, and one end of the sliding block is connected to one side of the movable plate.

[0012] Preferably, the clamping assembly includes a fixed plate, a fixed clamping plate, a movable rod, and a spring; the fixed plate is disposed on the top of the sample stage; the fixed clamping plate is disposed on the top of the sample stage and located on one side of the fixed plate; the movable rod is movably disposed on the fixed plate, one end of the movable rod is provided with a movable clamping plate, and the other end of the movable rod is provided with a pull plate; the spring is sleeved on the movable rod, one end of the spring abuts against one side of the movable clamping plate, and the other end of the spring abuts against one side of the fixed plate.

[0013] Preferably, the fixed plate is slidably provided with guide rods on both sides of the movable rod, and one end of the guide rod is connected to one side of the movable clamping plate.

[0014] Preferably, a buffer layer is provided on one side of both the fixed clamping plate and the movable clamping plate, and the buffer layer is made of rubber.

[0015] The advantages of this utility model compared to the prior art are:

[0016] 1. By adjusting the Z-axis, X-axis, and Y-axis components in the focusing unit, the vertical height and horizontal direction of the sample stage are adjusted, thereby ensuring that the sample surface is precisely focused on the laser focal point and that the sample is located on the focal plane of the microscope objective. This ensures the laser focusing accuracy and improves the efficiency of the detection.

[0017] 2. By pulling the pull plate, the pull plate drives the movable rod to move. The movement of the movable rod causes the movable clamping plate to move away from the fixed clamping plate and compress the spring. At this time, the sample is placed on one side of the fixed clamping plate. Then, the pull plate is released, and the spring recovers its elastic deformation, causing the movable clamping plate to move towards the fixed clamping plate, thereby fixing the sample and preventing the sample from shaking during the test. Attached Figure Description

[0018] Figure 1 This is a stereoscopic image of a high-efficiency Raman spectrometer from a first-view perspective.

[0019] Figure 2 This is a cross-sectional view of a high-efficiency Raman spectrometer viewed from the front.

[0020] Figure 3 This is a three-dimensional cross-sectional view of the adjustment box in a high-efficiency Raman spectrometer.

[0021] Figure 4This is a front view of the adjustment box, support block, and support base in a high-efficiency Raman spectrometer.

[0022] Figure 5 This is a three-dimensional sectional view of the mounting base in a high-efficiency Raman spectrometer.

[0023] Figure 6 This is a cross-sectional view of the mounting base in a high-efficiency Raman spectrometer from a frontal viewing angle.

[0024] The following components are labeled in the diagram: 1. Base plate; 2. Laser emitting device; 3. Microscope objective; 4. Sample stage; 5. Clamping assembly; 51. Fixed plate; 52. Fixed clamping plate; 53. Movable rod; 54. Moving clamping plate; 55. Pull plate; 56. Spring; 57. Guide rod; 6. Focusing component; 61. Fixed column; 62. First threaded rod; 63. First motor; 64. Moving block; 65. Moving plate; 66. First support frame; 67. Second threaded rod; 68. Second motor; 69. X-direction drive block; 610. First slide rail; 611. First slider; 612. Connecting plate; 613. Second support frame; 614. Third threaded rod; 615. Third motor; 616. Y-direction drive block; 617. Second slide rail; 618. Second slider; 619. Optical rod; 620. Limiting plate; 621. Sliding block. Detailed Implementation

[0025] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0026] See Figures 1 to 6 As shown, this utility model provides a high-efficiency Raman spectrometer, including a base plate 1 and a laser emitting device 2. The laser emitting device 2 is disposed on the top of the base plate 1, and a microscope objective 3 is disposed at the bottom of the laser emitting device 2. A sample stage 4 is disposed on the top of the base plate 1 below the microscope objective 3. A focusing component 6 for adjusting the position of the sample stage 4 is disposed on the top of the base plate 1. The focusing component 6 includes a Z-axis adjusting component for adjusting the Z direction of the sample stage 4, an X-axis adjusting component for adjusting the X direction of the sample stage 4, and a Y-axis adjusting component for adjusting the Y direction of the sample stage 4. A clamping component 5 for clamping the sample is also disposed on the top of the sample stage 4.

[0027] A monochromatic laser beam is emitted by the laser emitting device 2, focused by the microscope objective 3, and then irradiates the surface of the sample to be tested on the sample stage 4, exciting the sample to generate Raman scattered light. The sample is fixed by the clamping assembly 5 on the sample stage 4 to prevent sample movement during the detection process and ensure that the laser spot is always aligned with the area to be tested. The vertical height and horizontal direction of the sample stage 4 can be adjusted by the Z-axis adjustment component, X-axis adjustment component, and Y-axis adjustment component in the focusing component 6, so that the sample surface is precisely focused on the laser focal point, and the sample is located on the focal plane of the microscope objective 3, ensuring laser focusing accuracy and improving detection efficiency.

[0028] See Figures 1 to 5 As shown, the Z-axis adjustment component includes a fixed column 61, a first motor 63, and a moving block 64. The fixed column 61 is located on the top of the base plate 1, on one side of the microscope objective 3, and a first threaded rod 62 is vertically arranged inside the fixed column 61. The first motor 63 is located on the top of the fixed column 61, and the output end of the first motor 63 is connected to one end of the first threaded rod 62. The moving block 64 is threaded onto the first threaded rod 62, and a moving plate 65 is arranged on one side of the moving block 64. The top of the moving plate 65 is connected to the bottom of the X-axis adjustment component, the top of the X-axis adjustment component is connected to the bottom of the Y-axis adjustment component, and the top of the Y-axis adjustment component is connected to the bottom of the sample stage 4.

[0029] When it is necessary to adjust the Z-axis direction of the sample stage 4, the first motor 63 is started, which drives the first threaded rod 62 to rotate. The first threaded rod 62 drives the moving block 64 to move, and the movement of the moving block 64 drives the moving plate 65 to move. The movement of the moving plate 65 in the Z-axis direction drives the sample stage 4 to move through the X-axis adjustment component and the Y-axis adjustment component, thereby realizing the vertical position adjustment of the sample stage 4.

[0030] See Figure 4 and Figure 5 As shown, the X-axis adjustment component includes a first support frame 66, an X-direction drive block 69, a first slide rail 610, and a connecting plate 612. The first support frame 66 is disposed on the top of the movable plate 65, and a second threaded rod 67 is disposed inside the first support frame 66. A second motor 68 is disposed on one side of the first support frame 66, and the output end of the second motor 68 is connected to one end of the second threaded rod 67. The X-direction drive block 69 is threadedly connected to the second threaded rod 67. The first slide rail 610 is disposed on the movable plate 65 and located on both sides of the first support frame 66. A first slider 611 is slidably disposed on the first slide rail 610. The connecting plate 612 is disposed on the top of the X-direction drive block 69, and the bottom of the connecting plate 612 is connected to the top of the first slider 611.

[0031] When it is necessary to adjust the X-axis direction of the sample stage 4, the second motor 68 is started, and the output end of the second motor 68 drives the second threaded rod 67 to rotate. The rotation of the second threaded rod 67 drives the X-direction drive block 69 to move. The X-direction drive block 69 drives the connecting plate 612 to move. When the connecting plate 612 moves, it slides on the first slide rail 610 through the first slider 611 at the bottom of the connecting plate 612, which improves the stability of the movement. The movement of the connecting plate 612 drives the sample stage 4 to move through the Y-axis adjustment component, thereby realizing the position adjustment of the sample stage 4 in the X-axis direction.

[0032] See Figure 4 and Figure 5 As shown, the Y-axis adjustment component includes a second support frame 613, a Y-direction drive block 616, and a second slide rail 617. The second support frame 613 is disposed on the top of the connecting plate 612. A third threaded rod 614 is disposed inside the second support frame 613. A third motor 615 is disposed on one side of the second support frame 613. The output end of the third motor 615 is connected to one end of the third threaded rod 614. The Y-direction drive block 616 is threaded onto the third threaded rod 614. The sample stage 4 is disposed on the top of the Y-direction drive block 616. The second slide rail 617 is disposed on the connecting plate 612 and located on both sides of the second support frame 613. A second slider 618 is slidably disposed on the second slide rail 617. The top of the second slider 618 is connected to the bottom of the sample stage 4.

[0033] When it is necessary to adjust the Y-axis direction of the sample stage 4, the third motor 615 is started, and the output end of the third motor 615 drives the third threaded rod 614 to rotate. The rotation of the third threaded rod 614 drives the Y-direction drive block 616 to move. The Y-direction drive block 616 drives the sample stage 4 to move. When the sample stage 4 moves, it slides on the second slide rail 617 through the second slider 618 at the bottom, which improves the stability of the movement, thereby achieving the position adjustment of the sample stage 4 in the Y-axis direction.

[0034] See Figure 4 and Figure 5 As shown, a light rod 619 is provided on the top of the base plate 1 on the side of the movable plate 65 away from the fixed column 61. A limit plate 620 is provided at the top of the light rod 619. A sliding block 621 is slidably provided on the light rod 619. One end of the sliding block 621 is connected to one side of the movable plate 65.

[0035] When the Z-axis adjustment component drives the moving plate 65 to move up and down, the sliding block 621 on the other side of the moving plate 65 will slide on the light rod 619, thereby making the moving plate 65 more stable when moving up and down.

[0036] See Figure 6As shown, the clamping assembly 5 includes a fixed plate 51, a fixed clamping plate 52, a movable rod 53, and a spring 56; the fixed plate 51 is disposed on the top of the sample stage 4; the fixed clamping plate 52 is disposed on the top of the sample stage 4 and located on one side of the fixed plate 51; the movable rod 53 is movably disposed on the fixed plate 51, one end of the movable rod 53 is provided with a movable clamping plate 54, and the other end of the movable rod 53 is provided with a pull plate 55; the spring 56 is sleeved on the movable rod 53, one end of the spring 56 abuts against one side of the movable clamping plate 54, and the other end of the spring 56 abuts against one side of the fixed plate 51.

[0037] When it is necessary to clamp the sample, by pulling the pull plate 55, the pull plate 55 drives the movable rod 53 to move. The movement of the movable rod 53 causes the movable clamping plate 54 to move away from the fixed clamping plate 52 and compress the spring 56. At this time, the sample is placed on one side of the fixed clamping plate 52. Then, the pull plate 55 is released, and the spring 56 restores its elastic deformation, causing the movable clamping plate 54 to move towards the fixed clamping plate 52, thereby fixing the sample and preventing the sample from shaking during the test.

[0038] See Figure 6 As shown, the fixed plate 51 is slidably provided with guide rods 57 on both sides of the movable rod 53, and one end of the guide rod 57 is connected to one side of the movable clamping plate 54.

[0039] The guide rod 57 makes the movement of the moving clamping plate 54 more stable.

[0040] See Figure 6 As shown, a buffer layer is provided on one side of both the fixed clamping plate 52 and the movable clamping plate 54. The buffer layer is made of rubber.

[0041] The rubber buffer layer has good elasticity and flexibility. When the moving clamping plate (54) applies pressure to fix the sample, the buffer layer absorbs the clamping force through its own deformation, avoiding rigid contact that could cause the sample surface to be pinched, indented or broken.

[0042] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A high-efficiency Raman spectrometer, characterized in that, The system includes a base plate (1) and a laser emitting device (2). The laser emitting device (2) is located on the top of the base plate (1). A microscope objective (3) is located at the bottom of the laser emitting device (2). A sample stage (4) is located on the top of the base plate (1) below the microscope objective (3). A focusing component (6) for adjusting the position of the sample stage (4) is located on the top of the base plate (1). The focusing component (6) includes a Z-axis adjustment component for adjusting the Z-direction of the sample stage (4), an X-axis adjustment component for adjusting the X-direction of the sample stage (4), and a Y-axis adjustment component for adjusting the Y-direction of the sample stage (4). A clamping assembly (5) for clamping the sample is also located on the top of the sample stage (4).

2. The high-efficiency Raman spectrometer according to claim 1, characterized in that, The Z-axis adjustment component includes a fixed column (61), a first motor (63), and a moving block (64); The fixing post (61) is located on the top of the base plate (1) and on one side of the microscope objective (3). A first threaded rod (62) is vertically installed inside the fixing post (61). The first motor (63) is mounted on the top of the fixed column (61), and the output end of the first motor (63) is connected to one end of the first threaded rod (62); The movable block (64) is threaded onto the first threaded rod (62). A movable plate (65) is provided on one side of the movable block (64). The top of the movable plate (65) is connected to the bottom of the X-axis adjustment component. The top of the X-axis adjustment component is connected to the bottom of the Y-axis adjustment component. The top of the Y-axis adjustment component is connected to the bottom of the sample stage (4).

3. A high-efficiency Raman spectrometer according to claim 1, characterized in that, The X-axis adjustment component includes a first support frame (66), an X-direction drive block (69), a first slide rail (610), and a connecting plate (612); The first support frame (66) is disposed on the top of the movable plate (65), and a second threaded rod (67) is disposed inside the first support frame (66). A second motor (68) is disposed on one side of the first support frame (66), and the output end of the second motor (68) is connected to one end of the second threaded rod (67). The X-direction drive block (69) is threadedly connected to the second threaded rod (67); The first slide rail (610) is disposed on the movable plate (65) and located on both sides of the first support frame (66), and a first slider (611) is slidably disposed on the first slide rail (610); The connecting plate (612) is disposed on the top of the X-direction drive block (69), and the bottom of the connecting plate (612) is connected to the top of the first slider (611).

4. A high-efficiency Raman spectrometer according to claim 1, characterized in that, The Y-axis adjustment component includes a second support frame (613), a Y-direction drive block (616), and a second slide rail (617); The second support frame (613) is disposed on the top of the connecting plate (612). A third threaded rod (614) is disposed inside the second support frame (613). A third motor (615) is disposed on one side of the second support frame (613). The output end of the third motor (615) is connected to one end of the third threaded rod (614). The Y-direction drive block (616) is threaded onto the third threaded rod (614), and the sample stage (4) is located on top of the Y-direction drive block (616); The second slide rail (617) is disposed on the connecting plate (612) and located on both sides of the second support frame (613). A second slider (618) is slidably disposed on the second slide rail (617), and the top of the second slider (618) is connected to the bottom of the sample stage (4).

5. A high-efficiency Raman spectrometer according to claim 1, characterized in that, A light rod (619) is provided on the top of the base plate (1) on the side of the movable plate (65) away from the fixed column (61). A limit plate (620) is provided at the top of the light rod (619). A sliding block (621) is slidably provided on the light rod (619). One end of the sliding block (621) is connected to one side of the movable plate (65).

6. A high-efficiency Raman spectrometer according to claim 5, characterized in that, The clamping assembly (5) includes a fixed plate (51), a fixed clamping plate (52), a movable rod (53), and a spring (56); The fixing plate (51) is disposed on the top of the sample stage (4); The fixing clamping plate (52) is disposed on the top of the sample stage (4) and located on one side of the fixing plate (51); The movable rod (53) is movably mounted on the fixed plate (51), and a movable clamping plate (54) is provided at one end of the movable rod (53), and a pull plate (55) is provided at the other end of the movable rod (53). The spring (56) is sleeved on the movable rod (53), one end of the spring (56) abuts against one side of the movable clamping plate (54), and the other end of the spring (56) abuts against one side of the fixed plate (51).

7. A high-efficiency Raman spectrometer according to claim 6, characterized in that, The fixed plate (51) is slidably provided with guide rods (57) on both sides of the movable rod (53), and one end of the guide rod (57) is connected to one side of the movable clamping plate (54).

8. A high-efficiency Raman spectrometer according to claim 6, characterized in that, Both the fixed clamping plate (52) and the movable clamping plate (54) have a buffer layer on one side, and the buffer layer is made of rubber.

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