A confocal Raman spectrometer and its optical path device

Abstract

The application discloses a confocal Raman spectrometer and a light path device thereof in the field of optical instruments, which comprises an adjusting assembly and a temperature adjusting assembly arranged on a sample table, the adjusting assembly comprises a first cavity and a second cavity arranged in the sample table, two adjusting boxes are communicated with the first cavity, a driving cavity is arranged below the first cavity, the driving cavity is communicated with the first cavity, a moving ring in the form of a ring is arranged at the communicated position, a plurality of placing tables for placing samples are arranged above the moving ring, a detection table is fixedly connected in the second cavity, and the temperature adjusting assembly comprises two temperature guiding telescopic rods.

Description

Technical Field

[0001] This invention belongs to the field of optical instruments, specifically a confocal Raman spectrometer and its optical path device. Background Technology

[0002] Raman spectroscopy, a type of scattering spectroscopy, was first discovered in 1928 by the Indian scientist Raman. Its principle is that incident light causes vibrations in molecules (or crystal lattices) of a substance, resulting in the loss (or gain) of some energy and a change in the frequency of the scattered light. Raman spectroscopy technology is based on this principle; by analyzing the scattering spectrum of a substance, it determines information such as the substance's structure, composition, and elemental composition. Current Raman spectrometers designed based on this principle typically include an optical path device and a sample stage for placing the sample.

[0003] With the emergence of novel electromagnetic functional materials such as high-temperature superconductors and topological insulators, the study of material properties at different temperatures, especially at low temperatures, has become a hot topic. Current techniques often employ a method of connecting the sample stage to a temperature control device such as a refrigerator or heating wire to regulate the sample temperature.

[0004] However, this method requires manual adjustment of the refrigerator or heating wire according to the sample type. In addition, when testing multiple samples, it is necessary to repeatedly place and retrieve samples from the sample stage, which is cumbersome and can easily reduce the user's work efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a confocal Raman spectrometer and its optical path device to solve the problems in the prior art that require manual adjustment of the refrigerator or heating wire according to the sample type, and that in the process of detecting multiple samples, it is necessary to repeatedly place and take samples from the sample stage, which is cumbersome and can easily reduce the user's work efficiency.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: A confocal Raman spectrometer and its optical path device, comprising an adjustment component and a temperature control component disposed on a sample stage. The adjustment component includes a first chamber and a second chamber disposed within the sample stage. The first chamber is annular and is connected to two adjustment boxes, both of which are connected to the second chamber. A drive chamber is disposed below the first chamber and is connected to the first chamber. An annular moving ring is disposed at the connection point. A first drive component is disposed on the bottom wall of the moving ring. The first drive component is used to drive the moving ring to rotate. Several placement stages for placing samples are disposed above the moving ring. The bottom walls of the placement stages are all slidably fitted with the bottom wall of the first chamber. Viewing windows are disposed on the top walls of both the first and second chambers. A detection stage is fixedly connected inside the second chamber.

[0007] The temperature control assembly includes two temperature-conducting telescopic rods that are fixedly connected to the refrigerator and the heating wire, respectively. The temperature-conducting telescopic rods are slidably engaged with the side wall of the adjustment box away from the first chamber. The end of the temperature-conducting telescopic rods near the placement platform can be detachably connected to the adjacent placement platform. A third chamber is provided inside the temperature-conducting telescopic rod. The third chamber is connected to the first air pump, and a first solenoid valve is provided at the connection point. The third chamber is connected to the second chamber, and a throttling valve is provided at the connection point.

[0008] It also includes a control system for controlling the operation of the first drive assembly, the first air pump, the first solenoid valve, the throttle valve, the refrigerator, and the heating wire.

[0009] Furthermore, the control system includes a controller, a camera, and temperature and pressure sensors corresponding to the quantity and placement platform;

[0010] Temperature sensors are used to collect temperature information of the samples on the testing stage;

[0011] Pressure sensors are used to collect pressure information applied to the sample on the placement stage;

[0012] The camera is used to capture image information including the placement platform;

[0013] The controller is used to receive sample type information input by the user, and to control the operation of the first drive component, the first air pump, the first solenoid valve, the throttle valve, the refrigerator and the heating wire based on the sample type information, temperature information, pressure information and image information.

[0014] Furthermore, the first drive assembly includes a first drive motor, which is fixedly connected to the side wall of the drive chamber. The output shaft of the first drive motor is coaxially fixedly connected to a first gear, and a first rack meshes on the first gear. The first rack is fixedly connected to the bottom wall of the moving ring. The controller controls the operation of the first drive motor according to the type information, temperature information, pressure information, and image information.

[0015] Furthermore, the controller can also receive selection information input by the user, and control the first air pump, the first solenoid valve, the throttle valve, the refrigerator, the heating wire and the first drive motor to work according to the selection information.

[0016] Furthermore, a sealing component is provided at the connection between the first chamber and the mixing box. Each sealing component includes a placement slot on the sample stage. A baffle is slidably fitted inside the placement slot. An airbag is fixedly connected to the side wall of the baffle near the placement slot. The airbag is fixedly connected to the side wall of the placement slot. The airbag is connected to a second air pump, and a second solenoid valve is provided at the connection. The controller controls the operation of the second air pump and the second solenoid valve according to the type information, selection information, temperature information, pressure information and image information.

[0017] Furthermore, the testing station divides the second chamber into an upper chamber and a lower chamber, and the third chamber is connected to the lower chamber.

[0018] Furthermore, the temperature-conducting telescopic rod, the testing platform, and the placement platform are all made of high-purity oxygen-free copper.

[0019] Furthermore, the viewing window is made of optical quartz glass.

[0020] Furthermore, the top wall of the testing platform is equipped with shock-absorbing pads made of elastic material.

[0021] Furthermore, an optical path device for a confocal Raman spectrometer, applied to the aforementioned confocal Raman spectrometer, includes a housing. Inside the housing, from top to bottom, are arranged a laser, a beam expander, a first filter, and a microscope. The microscope is used to focus the laser emitted by the laser onto the sample stage. A receiving box with an opening at the bottom is slidably fitted onto the inner wall of the housing. The receiving box contains a receiving component for receiving the Raman signal after the laser emitted by the laser emitter is scattered by the sample. A second driving component is provided on the receiving box for driving the receiving box to move horizontally along the inner wall of the housing.

[0022] The technical principles and beneficial effects of the above solution are as follows:

[0023] (1) By adjusting the components and the temperature-conducting telescopic rod, this device enables the sample stage to simultaneously hold multiple different samples and pushes the samples onto the detection stage for detection in sequence during use. Compared with the prior art, this device can reduce the time required to pick up and replace samples during use and improve the user's work efficiency.

[0024] (2) This device adjusts the sample temperature during the process of moving the sample to the testing stage by adjusting the position of the temperature control component, so that the sample temperature rises or falls to the required test temperature. At the same time, the temperature-conducting telescopic rod can also adjust the temperature of the surrounding environment, thereby affecting the temperature of the next sample adjacent to the sample, thus adjusting the temperature of the next sample.

[0025] (3) The device also adjusts the temperature of the detection stage at the same time as the temperature-conducting telescopic rod adjusts the temperature of the sample, thereby speeding up the adjustment of the sample temperature. At the same time, when the detection temperatures of two adjacent samples are significantly different and the two samples need to be heated or cooled, the temperature of the detection stage can be adjusted in advance before the previous sample is detected and the next sample is pushed into the detection stage, thus accelerating the speed of sample temperature change.

[0026] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] Figure 1 This is an isometric view of an embodiment of the confocal Raman spectrometer and its optical path device of the present invention;

[0028] Figure 2 This is a front view of the sample stage portion of an embodiment of the confocal Raman spectrometer and its optical path device of the present invention;

[0029] Figure 3 This is a top view of the sample stage portion of an embodiment of the confocal Raman spectrometer and its optical path device of the present invention;

[0030] Figure 4 This is a cross-sectional view (AA) of an embodiment of the confocal Raman spectrometer and its optical path device of the present invention.

[0031] Figure 5 This is a BB cross-sectional view of an embodiment of the confocal Raman spectrometer and its optical path device of the present invention;

[0032] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0033] Figure 7 This is a partial cross-sectional view of the optical path device in an embodiment of the confocal Raman spectrometer and its optical path device of the present invention;

[0034] Figure 8 This is a circuit diagram of an embodiment of the confocal Raman spectrometer and its optical path device of the present invention.

[0035] The reference numerals in the accompanying drawings include: sample stage 1, adjustment assembly 2, adjustment box 21, viewing window 22, placement stage 23, moving ring 24, first drive assembly 25, first transmission motor 251, first gear 252, first rack 253, detection stage 26, baffle 27, temperature control assembly 3, temperature-conducting telescopic rod 31, outer rod 311, inner rod 312, first air pump 32, outer shell 4, receiving assembly 5, second filter 51, second lens 52, grating 53, first lens 54, CCD detector 55, receiving box 56, second drive assembly 6, second transmission motor 61, second gear 62, second rack 63, laser 71, beam expander 72, first filter 73, microscope 74. Detailed Implementation

[0036] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0039] The following detailed description illustrates the specific implementation method: Example

[0040] As attached Figure 1-8As shown: A confocal Raman spectrometer includes an adjustment assembly 2 and a temperature control assembly 3 disposed on a sample stage 1. The adjustment assembly 2 includes a first chamber and a second chamber disposed within the sample stage 1. The first chamber is annular and connects to two adjustment boxes 21, both of which are connected to the second chamber. A drive chamber is disposed below the first chamber and connects to the first chamber. A sliding ring 24 is slidably fitted at the connection point. A first drive assembly 25 is disposed on the bottom wall of the sliding ring 24. The first drive assembly 25 includes a first drive motor 251. The preferred model is MY36GP-36ZY. The first drive motor 251 is fixedly connected to the side wall of the drive chamber by bolts. The output shaft of the first drive motor 251 is coaxially welded to a first gear 252. A first rack 253 meshes with the first gear 252. The first rack 253 is fixedly connected to the bottom wall of the moving ring 24 by bolts. The first drive assembly 25 is used to drive the moving ring 24 to rotate. Several placement platforms 23 for placing samples are provided above the moving ring 24. The bottom walls of the placement platforms 23 are all slidably fitted with the bottom wall of the first chamber. The top of the first chamber and the top of the first and second chambers are connected. Each wall is equipped with a viewing window 22. A testing platform 26 is welded into the second chamber. The temperature control assembly 3 includes two temperature-conducting telescopic rods 31, which are respectively fixedly connected to the refrigerator and the heating wire by bolts. Each temperature-conducting telescopic rod 31 includes an inner rod 312 and an outer rod 311. The inner rod 312 slides against the inner side wall of the outer rod 311. The inner rod 312 slides against the side wall of the adjustment box 21 away from the first chamber. The end of the inner rod 312 away from the outer rod 311 can be detachably connected to the adjacent placement platform 23 by a snap-fit. A third chamber is provided inside the temperature-conducting telescopic rod 31. The third chamber is connected to the first air pump 32. The first air pump 32 is preferably KYK38VPM, and a first solenoid valve is provided at the connection point. The first solenoid valve is preferably CPV15BP. The third chamber is connected to the second chamber, and a throttle valve is provided at the connection point. The throttle valve is preferably PSL804A. The system also includes a control system, which includes a controller, a camera, and temperature and pressure sensors corresponding to the placement stage 23. The controller is fixedly connected to the sample stage 1 by bolts. The temperature and pressure sensors are both fixedly connected to the top wall of the placement stage 23 by bolts. The controller is preferably 2080 Micro850, the camera is preferably SNC-VB770, the temperature sensor is preferably 718-272969-001, and the pressure sensor is preferably IMS-C04A. The camera, temperature sensor, pressure sensor, first drive motor 251, first air pump 32, first solenoid valve, throttle valve, refrigerator, and heating wire are all electrically connected to the controller.

[0041] The specific implementation process is as follows: When using this device, start the device and place the samples to be tested on the placement platform 23 in descending or ascending order according to the required temperature. During the placement process, the user simultaneously inputs the name of the sample to be placed, i.e. the type information, into the controller. The first pressure sensor continuously collects the pressure information applied to the placement platform 23 by the sample. The controller matches the placement platform 23 with the type information based on the position and type information of the first pressure sensor when the pressure information changes.

[0042] The controller determines the required detection temperature for the sample based on the type information. During detection, the controller controls the first drive motor 251 to work. The first drive motor 251 drives the moving ring 24 to rotate through the first gear 252 and the first rack 253, thereby driving the placement stage 23 to move. At the same time, the camera continuously collects image information of the placement stage 23, and the temperature sensor continuously collects temperature information of the sample on the placement stage 23.

[0043] When the temperature information is lower than the lowest test temperature in the sample, such as the test temperatures of the various samples being 1, 2, 3, and 4 respectively, while the temperature information is 0, when the placement stage 23 corresponding to the sample with the lowest test temperature, i.e., the test stage 26 for the sample with a test temperature of 1, moves into the adjustment box 21 corresponding to the heating wire, the controller controls the first drive motor 251 to stop working. Subsequently, the controller controls the first air pump 32 to work and the corresponding first solenoid valve to open. The first air pump 32 blows air into the third chamber, increasing the air pressure in the first chamber, thereby pushing the inner rod 312 towards the placement stage 23. After the end of the inner rod 312 away from the outer rod 311 contacts the placement stage 23, the latch on the inner rod 312 engages with the latch on the placement stage 23, connecting the two. The inner rod 312 pushes the placement stage 23 towards the detection stage 26 until the placement stage 23 reaches the center position of the detection stage 26 in the image information. During this process, the controller controls the heating wire to work, and the heating wire heats the heat-conducting telescopic rod 31. The heat-insulating telescopic rod heats the placement stage 23 through heat transfer, thereby heating the sample and the surrounding environment. This achieves the effect of lifting the sample during the process of pushing the sample into the detection stage 26. When the sample temperature rises to the detection temperature, the controller stops the heating wire, allowing the sample to be detected at a suitable temperature. After detection, the controller restarts the first air pump 32 to extract gas from the third chamber, causing the thermal extension rod 31 to shorten and thus move the placement stage 23 back to its original position. Subsequently, the controller again controls the first drive motor 251 to operate, which, through the first gear 252, first rack 253, and moving ring 24, drives the adjacent placement stage 23 corresponding to the sample requiring a slightly higher test temperature, i.e., the placement stage 23 corresponding to the sample with a detection temperature of 2, into the heating wire's corresponding position. Inside the adjustment box, the upper placement platform 23 is connected to the inner rod 312, and the latch of the lower placement platform 23 is connected to the latch of the inner rod 312. The controller controls the heating wire to increase its power, improving the temperature transmission from the thermal extension rod 31 to the placement platform 23. Since there is still residual temperature on the detection platform 26 when the sample on the upper placement platform 23 is tested, the sample on the placement platform 23 can quickly rise to the required detection temperature under the influence of the temperature on the detection platform 26 and the temperature of the thermal extension rod 31. After the user tests the sample, the above steps are repeated until all samples are tested.

[0044] When the temperature information is higher than the highest detection temperature in the sample, such as the detection temperatures of the samples being 1, 2, 3, and 4 respectively, and the temperature information being 5, the controller controls the first drive motor 251 to work, driving the moving ring 24 to rotate, and moving the sample with the highest test temperature, i.e., the sample with a detection temperature of 4, onto the placement stage 23 into the corresponding regulating box 21 of the refrigerator. The controller also controls the first air pump 32 to work and the corresponding first solenoid valve to open, pushing the placement stage 23 into the detection stage 26 through the temperature-conducting telescopic rod 31. At the same time, the temperature of the sample on the placement stage 23 is lowered to the set temperature. After the user tests the sample, the controller controls the first air pump 32 to work again, driving the temperature-conducting telescopic rod 31 to shorten and the placement stage 23 to reset. Then, the above steps are repeated to cool down the adjacent samples with slightly lower detection temperatures until all samples have been tested.

[0045] When the temperature information is higher than the lowest detection temperature but lower than the highest detection temperature, such as when the detection temperatures of the samples are 1, 2, 3, and 5 respectively, and the temperature information is 4, the controller controls the first drive motor 251 to move the sample with a detection temperature of 5 to the adjustment box 21 corresponding to the heating wire via the moving ring 24. The controller also controls the first air pump 32 and the heating wire to operate, and controls the corresponding first solenoid valve to open, raising the sample temperature and pushing it to the detection stage 26 for detection. Afterward, the controller controls the first air pump 32 to operate, causing the placement stage 23 to reset. Subsequently, the controller controls the first drive motor 251 again to operate, driving the placement stage 23 to move. The placement stage 23 and the inner... When rod 312 disengages, the controller simultaneously activates the first air pump 32, causing the temperature-conducting telescopic rod 31 to retract and reset. Then, the corresponding first solenoid valve closes. When the sample placement stage 23 with a detection temperature of 3 moves into the regulating box 21 corresponding to the refrigerator, the controller activates the first solenoid valve and air pump corresponding to that regulating box 21. The temperature-conducting telescopic rod 31 pushes the placement stage 23 into the regulating box 21, simultaneously cooling the stage 23. After the sample detection is completed, the controller, through the operation of the first air pump 32, resets the sample. The above steps are then repeated sequentially for samples with detection temperatures of 2 and 1.

[0046] During the process of the controller blowing air into the third chamber and driving the temperature-conducting telescopic rod 31 to extend, the controller controls the corresponding throttle valve to open, allowing some of the gas in the third chamber whose temperature is rising or falling to enter the second chamber, so as to synchronously adjust the temperature of the detection stage 26. Since solids conduct temperature better than gases, the temperature change rate of the detection stage 26 is slower than that of the placement stage 23, so that the temperature of the detection stage 26 is less likely to be over-adjusted, causing the sample temperature of the detection stage 26 to rise above the detection temperature or fall below the detection temperature.

[0047] Simultaneously, when the user does not place the samples in order according to the detection temperature or when the initial temperature information of each sample is different, the controller controls the first drive motor 251 to work, driving the placement stage 23 to move. Samples with detection temperatures higher than the temperature information are sequentially sent to the adjustment box 21 corresponding to the refrigerator. The temperature-conducting telescopic rod 31 corresponding to the adjustment box 21 pushes them to the detection stage 26 for cooling. Then, the remaining samples with detection temperatures lower than the temperature information are sequentially sent to the adjustment box 21 corresponding to the heating wire. The temperature-conducting telescopic rod 31 corresponding to the adjustment box 21 pushes them to the detection stage 26 for heating. During this process, if the detection temperature difference between two adjacent samples exceeds the set value, and both samples require cooling and heating respectively (e.g., when the previous sample needs heating and the next sample needs cooling), and the detection temperatures of the two samples are different... If the difference is greater than the set value, the controller pushes the previous sample to the detection stage 26 and simultaneously heats it up. After the detection is completed and the sample is reset, the controller controls the first drive motor 251 to move the next sample to the regulating box 21 corresponding to the refrigerator. The controller then controls the first air pump 32, the first solenoid valve, and the throttle valve corresponding to the regulating box 21 to open, and controls the throttle valve to increase the gas flow rate from the third chamber to the second chamber, making it difficult for the gas pressure in the third chamber to rise, thus preventing the temperature-conducting telescopic rod 31 from extending. At the same time, the cooled air enters the second chamber, thus cooling the detection stage 26 in advance. This continues until the sample stage 1 moves into the regulating box 21. The controller then controls the throttle valve to restore the gas flow rate from the third chamber to the second chamber, causing the temperature-conducting telescopic rod 31 to extend and push the placement stage 23 to move. This completes the subsequent cooling and moving steps.

[0048] Based on the above scheme, in order to make the device more adaptable to the needs of users, the controller can also be used to receive selection information input by the user. The controller controls the first air pump 32, the first solenoid valve, the throttle valve and the first drive motor 251 to work according to the selection information. Thus, the user can input the next sample information to be tested into the controller according to the experimental needs, that is, the selection information, and modify the testing order. The controller controls the first air pump 32, the first solenoid valve, the throttle valve and the first drive motor 251 according to the selection information, and pushes the corresponding placement stage 23 of the sample to the testing stage 26 according to the temperature information and testing temperature of the sample, and adjusts the temperature of the sample.

[0049] Based on the above scheme, to avoid affecting the other sample through heat transfer when two samples requiring cooling and heating are respectively subjected to temperature treatment by the temperature-conducting telescopic rod 31, a sealing component is provided at the connection between the first chamber and the adjustment box. Each sealing component includes a placement slot on the sample stage 1, with a baffle 27 slidingly fitted inside the placement slot. The baffle 27 is preferably made of polyurethane foam. An airbag is adhered and fixed to the side wall of the baffle 27 near the placement slot. The airbag is connected to a second air pump, preferably a KYK38VPM model. A second solenoid valve is provided at the connection point, preferably an FPDJ-05 model. Both the second solenoid valve and the second air pump are electrically connected to a controller. Based on type information, selection information, temperature information, pressure information, and image information, the second air pump and the second solenoid valve are controlled to operate. Thus, when the temperature difference between two adjacent samples is greater than a set value, and the two samples need to be heated or cooled respectively, the corresponding second air pump is controlled to operate before the controller controls the first air pump 32 to operate. The second air pump inflates the air bladder, causing the air bladder to expand and push the baffle 27 upward, cutting off the connection between the first chamber and the adjustment box 21. The temperature inside the adjustment box 21 is transferred outward by the baffle 27 assembly, thereby preventing the temperature of the next adjacent sample from rising or falling with the temperature of the first sample, which would increase the temperature difference between the next sample and its detected temperature, thus prolonging the time for adjusting the temperature of the next sample.

[0050] Based on the above scheme, since the molecules in the gas may interact with the laser beam during the gas flow process, resulting in the attenuation or scattering of laser energy, thereby affecting the quality and resolution of the spectrum, in order to avoid the gas flow entering the second chamber from affecting the experiment, the detection stage 26 divides the second chamber into an upper chamber and a lower chamber, and the third chamber is connected to the lower chamber. Thus, the gas in the third chamber enters the lower part of the detection stage 26 and does not affect the laser beam irradiation position on the upper part of the detection stage 26, thereby avoiding the influence of gas flow on the experiment.

[0051] Based on the above scheme, in order to accelerate the speed of sample temperature adjustment of this device, the material of the temperature-conducting telescopic rod 31, the detection stage 26 and the placement stage 23 are all high-purity oxygen-free copper. As a result, high-purity oxygen-free copper has a high thermal conductivity, which accelerates the speed of temperature transfer on the temperature-conducting telescopic rod 31, the detection stage 26 and the placement stage 23, thereby accelerating the speed of sample temperature adjustment by the heating wire and the refrigerator. At the same time, compared with materials with higher thermal conductivity, high-purity oxygen-free copper has a lower price, thereby reducing the cost of this device.

[0052] Based on the above scheme, in order to reduce the impact of this device on the experiment, the material of the viewing window 22 is optical quartz glass. Thus, the optical quartz glass can reduce the obstruction of the laser by the viewing window 22, and when the laser passes through the optical quartz glass and is focused on the sample, the subsequent characteristic peaks are less likely to have impurities.

[0053] Based on the above scheme, in order to avoid the vibration generated during the operation of the refrigeration unit being transmitted to the sample stage 1 and affecting the experiment, an anti-vibration pad of elastic material is adhered and fixed to the top wall of the detection stage 26. Thus, the anti-vibration pad can convert part of the vibration energy into its own elastic potential energy, thereby absorbing the vibration energy and avoiding the vibration affecting the sample detection. Example

[0054] As attached Figure 7 The diagram shows an optical path device for a confocal Raman spectrometer, applied to the aforementioned confocal Raman spectrometer. It includes a housing 4, within which, from top to bottom, are arranged a laser 71, a beam expander 72, a first filter 73, and a microscope 74. The microscope 74 focuses the laser emitted by the laser 71 onto a sample stage 1. A receiving box 56 with an opening at the bottom is slidably fitted onto the inner wall of the housing 4. A receiving component 5 is provided within the receiving box 56. The receiving component 5 receives the Raman signal from the laser emitted by the laser emitter after scattering through the sample. The receiving component 5 includes a CCDCCD detector 55, a first lens 54, a grating 53, a second lens 52, and a second filter 51. The CCDCCD detector... The receiver 55 is used to receive and detect laser light scattered by the sample. The CCDCCD detector 55, the first lens 54, the grating 53, the second lens 52, and the second filter 51 are all located inside the receiver box 56 and arranged from top to bottom. The receiver box 56 is provided with a second drive assembly 6, which is used to drive the receiver box 56 to move horizontally along the inner side wall of the outer shell 4. The second drive assembly 6 includes a second drive motor 61, preferably of model MY36GP-36ZY. The output end of the second drive motor 61 is coaxially fixedly connected to a second gear 62 by bolts, and the second gear 62 meshes with a second rack 63. The second rack 63 is fixedly connected to the outer side wall by bolts.

[0055] The specific implementation process is as follows: When using this device, start the device, and the laser 71 emits a laser. The laser beam passes through the beam expander 72, the first filter 73, and the microscope 74 in sequence to irradiate the sample and is scattered on the sample. The scattered Raman signal passes through the second filter 51, the second lens 52, the grating 53, and the first lens 54 in sequence and enters the CCDCCD detector 55, where it is collected. At the same time, the second drive motor 61 is started, which drives the second gear 62 to rotate. Through the second rack 63, the receiver moves horizontally along the inner wall of the outer shell 4, thereby receiving Raman signals at different angles. By comparing the Raman signals at various angles, the optimal Raman information is selected to avoid experimental errors caused by uneven sample surfaces.

[0056] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific structures and / or characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A confocal Raman spectrometer characterized by: The application relates to a sample table, which comprises an adjusting assembly and a temperature adjusting assembly arranged on the sample table, the adjusting assembly comprises a first cavity and a second cavity arranged in the sample table, the first cavity is annular, two adjusting boxes are communicated with the first cavity, and the adjusting boxes are communicated with the second cavity, a driving cavity is arranged below the first cavity, the driving cavity is communicated with the first cavity, and an annular moving ring is arranged at the communicated position, a first driving assembly is arranged on the bottom wall of the moving ring, the first driving assembly is used for driving the moving ring to rotate, a plurality of placing tables for placing samples are arranged above the moving ring, the bottom walls of the placing tables are slidably connected with the bottom wall of the first cavity, the top walls of the first cavity and the second cavity are provided with windows, and a detection table is fixedly connected in the second cavity. The temperature adjusting assembly comprises two temperature guiding telescopic rods fixedly connected with a refrigerator and an electric heating wire respectively, the temperature guiding telescopic rods are slidably connected with the side walls of the adjusting boxes away from the first cavity, one end of the temperature guiding telescopic rods close to the placing tables is detachably connected with the adjacent placing table, a third cavity is arranged in the temperature guiding telescopic rod, a first gas pump is communicated with the third cavity, a first electromagnetic valve is arranged at the communicated position, the third cavity is communicated with the second cavity, and a throttle valve is arranged at the communicated position, and the two adjusting boxes correspond to the refrigerator and the electric heating wire respectively. The application further comprises a control system, which is used for controlling the working of the first driving assembly, the first gas pump, the first electromagnetic valve, the throttle valve, the refrigerator and the electric heating wire.

2. The confocal Raman spectrometer of claim 1, wherein: The control system comprises a controller, a camera, a plurality of temperature sensors corresponding to the placing tables and a plurality of pressure sensors. The temperature sensors are used for collecting the temperature information of the samples on the detection table. The pressure sensors are used for collecting the pressure information of the samples on the placing tables. The camera is used for collecting the image information of the placing tables. The controller is used for receiving the kind information of the samples input by a user, and controlling the working of the first driving assembly, the first gas pump, the first electromagnetic valve, the throttle valve, the refrigerator and the electric heating wire according to the kind information, the temperature information, the pressure information and the image information.

3. The confocal Raman spectrometer of claim 2, wherein: The first driving assembly comprises a first transmission motor fixedly connected with the side wall of the driving cavity, a first gear fixedly connected with the output shaft of the first transmission motor in a coaxial mode, a first rack meshed with the first gear, and the first rack is fixedly connected with the bottom wall of the moving ring, and the controller controls the working of the first transmission motor according to the kind information, the temperature information, the pressure information and the image information.

4. The confocal Raman spectrometer of claim 3, wherein: The controller can also be used for receiving selection information input by a user, and the controller controls the working of the first gas pump, the first electromagnetic valve, the throttle valve, the refrigerator, the electric heating wire and the first transmission motor according to the selection information.

5. The confocal Raman spectrometer of claim 4, wherein: The communicated positions of the first cavity and the adjusting boxes are provided with a sealing assembly, the sealing assembly comprises a placing groove arranged on the sample table, a baffle slidably connected in the placing groove, an air bag fixedly connected with the side wall of the baffle close to the placing groove, the air bag is fixedly connected with the side wall of the placing groove, a second gas pump communicated with the air bag, and a second electromagnetic valve arranged at the communicated position, and the controller controls the working of the second gas pump and the second electromagnetic valve according to the kind information, the selection information, the temperature information, the pressure information and the image information.

6. The confocal Raman spectrometer of claim 5, wherein: The detection table divides the second cavity into an upper cavity and a lower cavity, and the third cavities are communicated with the lower cavity.

7. The confocal Raman spectrometer of claim 6, wherein: The materials of the temperature guiding telescopic rods, the detection table and the placing tables are high-purity oxygen-free copper.

8. The confocal Raman spectrometer of claim 7, wherein: The material of the window is optical quartz glass.

9. The confocal Raman spectrometer of claim 8, wherein: The detection platform top wall is provided with a shock pad made of elastic material.

10. An optical path device of a confocal Raman spectrometer, applied to the confocal Raman spectrometer of any one of claims 1-9, characterized in that: The device comprises a shell, a laser, a beam expander, a first filter and a microscope are sequentially arranged in the shell from top to bottom, the microscope is used for converging the laser emitted by the laser on the sample platform, a receiving box with an opening in the bottom is slidably connected to the inner side wall of the shell, a receiving assembly is arranged in the receiving box, the receiving assembly is used for receiving the Raman signal scattered by the laser emitted by the laser emitter, a second driving assembly is arranged on the receiving box, and the second driving assembly is used for driving the receiving box to move horizontally along the inner side wall of the shell.

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