Confocal Raman spectrometer and light path device thereof

Abstract

The invention discloses a confocal Raman spectrometer and a light path device thereof in the field of optical instruments.The confocal Raman spectrometer comprises an adjusting assembly and a temperature adjusting assembly which are arranged on a sample table, the adjusting assembly comprises a first cavity and a second cavity which are formed in the sample table, the first cavity is communicated with two adjusting boxes, a driving cavity is formed below the first cavity, and the second cavity is communicated with two adjusting boxes; the driving cavity is communicated with the first cavity, an annular moving ring is arranged at the communication position, a plurality of placing tables for placing samples are arranged above the moving ring, a detection table is fixedly connected into the second cavity, and the temperature adjusting assembly comprises two temperature conducting telescopic rods; in the prior art, a refrigerator or an electric heating wire needs to be manually debugged according to sample types, and samples need to be repeatedly placed and taken from a sample table in the process of detecting a plurality of samples, so that the operation is tedious, and the working efficiency of a user is easily reduced.

Description

Technical Field

[0001] The invention belongs to the field of optical instruments, in particular to a confocal Raman spectrometer and an optical path device thereof. Background Art

[0002] Raman spectroscopy is a type of scattering spectrum first discovered by Indian scientist Raman in 1928. The principle is that incident light causes the molecules (or lattices) of a substance to vibrate and lose (or gain) some energy, causing the scattered light frequency to change. Raman spectroscopy technology is based on this principle, and by analyzing the scattering spectrum of a substance, information such as the structure and composition of the substance and the content of elements can be determined. In the prior art, the Raman spectrometer designed based on the above-mentioned distance mostly includes an optical path device and a sample stage for placing the sample.

[0003] With the emergence of new 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. In the prior art, the sample stage is often connected to a temperature control device such as a refrigerator or a heating wire to adjust the temperature of the sample.

[0004] However, this method requires manual debugging of the refrigerator or heating wire according to the sample type. At the same time, during the detection of multiple samples, this method requires repeated placement and removal of samples from the sample table, which is cumbersome and easily reduces the user's work efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a confocal Raman spectrometer and an optical path device thereof, so as to solve the problems existing in the prior art that a refrigerator or a heating wire needs to be manually debugged according to the sample type, and in the process of testing multiple samples, the samples need to be repeatedly placed and taken out from the sample table, which is cumbersome to operate and easily reduces the work efficiency of the user.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a confocal Raman spectrometer and an optical path device thereof, comprising an adjustment component and a temperature adjustment component arranged on a sample stage, the adjustment component comprising a first chamber and a second chamber opened in the sample stage, the first chamber being annular, the first chamber being connected to two adjustment boxes, and both the adjustment boxes being connected to the second chamber, a driving chamber being opened below the first chamber, the driving chamber being connected to the first chamber, and an annular moving ring being arranged at the connecting point, a first driving component being arranged on the bottom wall of the moving ring, the first driving component being used to drive the moving ring to rotate, a plurality of placing tables for placing samples being arranged above the moving ring, the bottom walls of the placing tables being slidably matched with the bottom wall of the first chamber, windows being arranged on the top walls of the first chamber and the second chamber, and a detection table being fixedly connected in the second chamber;

[0007] The temperature adjustment component includes two temperature-conducting telescopic rods respectively connected to the refrigerator and the electric heating wire, the temperature-conducting telescopic rods are slidably matched with the side wall of the adjustment box away from the first chamber, and the ends of the temperature-conducting telescopic rods close to the placement table can be detachably connected to the adjacent placement table. A third chamber is arranged in the temperature-conducting telescopic rod, the third chamber is connected to the first air pump, and a first solenoid valve is arranged at the connection point. The third chamber is connected to the second chamber, and a throttle valve is arranged at the connection point.

[0008] It also includes a control system, which is used 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.

[0009] Further, the control system includes a controller, a camera, and a number of temperature sensors and pressure sensors corresponding to the number of placement tables;

[0010] The temperature sensors are used to collect temperature information of samples on the test bench;

[0011] The pressure sensors are used to collect the pressure information applied by the sample on the placement table;

[0012] The camera is used to collect image information including the placement table;

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

[0014] Furthermore, the first driving component includes a first transmission motor, which is fixedly connected to the side wall of the driving chamber, and the output shaft of the first transmission motor is coaxially fixedly connected to the first gear, and the first gear is meshed with a first rack, and the first rack is fixedly connected to the bottom wall of the movable ring, and the controller controls the operation of the first transmission motor according to type information, temperature information, pressure information and image information.

[0015] Furthermore, the controller can also be used to receive selection information input by the user, and the controller controls the first air pump, the first solenoid valve, the throttle valve, the refrigerator, the heating wire and the first transmission motor to operate according to the selection information.

[0016] Furthermore, a closing component is provided at the connection point between the first chamber and the adjustment box, and the closing component includes a placement groove opened on the sample table, a baffle is slidably fitted in the placement groove, an airbag is fixedly connected to the side wall of the baffle close to the placement groove, the airbag is fixedly connected to the side wall of the placement groove, the airbag is connected to the second air pump, and a second solenoid valve is provided at the connection point, and the controller controls the operation of the second air pump and the second solenoid valve according to type information, selection information, temperature information, pressure information and image information.

[0017] Furthermore, the testing platform 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 materials of the temperature-conducting telescopic rod, the testing table and the placing table are all high-purity oxygen-free copper.

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

[0020] Furthermore, a shock-absorbing pad made of elastic material is provided on the top wall of the testing platform.

[0021] Furthermore, an optical path device of a confocal Raman spectrometer is applied to the confocal Raman spectrometer described in any one of claims 1 to 9, comprising a shell, in which a laser, a beam expander, a first filter and a microscope are arranged in sequence from top to bottom, the microscope is used to focus the laser light emitted by the laser on the sample stage, the inner wall of the shell is slidably matched with a receiving box with an opening at the bottom, the receiving box is provided with a receiving component, the receiving component is used to receive the Raman signal of the laser emitted by the laser transmitter after being scattered by the sample, and a second driving component is provided on the receiving box, the second driving component is used to drive the receiving box to move horizontally along the inner wall of the shell.

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

[0023] (1) The device adjusts the settings of components and temperature-conducting telescopic rods, so that a variety of different samples can be placed on the sample table at the same time, and the samples are pushed onto the test table for testing in turn during use. Compared with the prior art, the device can reduce the time required for taking and placing samples during use, thereby improving the work efficiency of users.

[0024] (2) The device adjusts the temperature of the sample by adjusting the position of the temperature adjustment component during the process of moving the sample to the test table for testing, so that the sample temperature rises or drops 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, thereby adjusting the temperature of the next sample.

[0025] (3) The device also connects the second chamber and the third chamber, and while the temperature of the sample is adjusted by the temperature-conducting telescopic rod, the temperature of the test platform is also adjusted, thereby speeding up the adjustment of the sample temperature. At the same time, when the detection temperatures of two adjacent samples differ greatly and the two samples need to be heated up and cooled down respectively, the temperature of the test platform can be adjusted in advance before the next sample is pushed onto the test platform after the previous sample is tested, thereby accelerating the speed of the sample temperature change.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 An axonometric diagram of an embodiment of a confocal Raman spectrometer and an optical path device thereof of the present invention;

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

[0029] Figure 3 A top view of a sample stage of an embodiment of a confocal Raman spectrometer and an optical path device thereof according to the present invention;

[0030] Figure 4 It is a cross-sectional view taken along line AA of an embodiment of a confocal Raman spectrometer and an optical path device thereof of the present invention;

[0031] Figure 5 It 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 The enlarged view of point A in the middle;

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

[0034] Figure 8 The figure is a circuit diagram of a confocal Raman spectrometer and an optical path device thereof according to an embodiment of the present invention.

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

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of the present invention, it is to be understood that the terms “longitudinal”, “lateral”, “vertical”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0039] The following is further described in detail through specific implementation methods:

[0040] Example 1

[0041] As attached Figure 1-8As shown: a confocal Raman spectrometer, comprising an adjustment component 2 and a temperature adjustment component 3 arranged on a sample stage 1, the adjustment component 2 comprising a first chamber and a second chamber opened in the sample stage 1, the first chamber being annular, the first chamber being connected to two adjustment boxes 21, and the adjustment boxes 21 being connected to the second chamber, a driving chamber being opened below the first chamber, the driving chamber being connected to the first chamber, and a ring-shaped moving ring 24 being slidably matched at the connecting point, a first driving component 25 being provided on the bottom wall of the moving ring 24, the first driving component 25 comprising a first transmission motor 251, the model of the first transmission motor 251 being preferably MY36GP-36ZY, the first transmission motor 251 being connected to the side of the driving chamber The walls are fixedly connected by bolts, the output shaft of the first transmission motor 251 is coaxially welded with a first gear 252, the first gear 252 is meshed with a first rack 253, the first rack 253 is fixedly connected to the bottom wall of the moving ring 24 by bolts, the first driving assembly 25 is used to drive the moving ring 24 to rotate, a plurality of placement tables 23 for placing samples are arranged above the moving ring 24, the bottom walls of the placement tables 23 are slidably matched with the bottom wall of the first chamber, the first chamber and the top walls of the first chamber and the second chamber are all provided with windows 22, a detection table 26 is welded in the second chamber, the temperature control assembly 3 includes two temperature conducting telescopic rods 31 respectively fixedly connected to the refrigerator and the heating wire by bolts, and the temperature conducting telescopic rods 31 are The invention comprises an inner rod 312 and an outer rod 311, wherein the inner rod 312 is slidably matched with the inner wall of the outer rod 311, and the inner rod 312 is slidably matched with the side wall of the regulating box 21 away from the first chamber, and the end of the inner rod 312 away from the outer rod 311 can be detachably connected to the adjacent placement table 23 through a buckle, and a third chamber is arranged in the temperature-conducting telescopic rod 31, and the third chamber is connected with a first air pump 32, and the model of the first air pump 32 is preferably KYK38VPM, and a first solenoid valve is arranged at the connection point, and the model of the first solenoid valve is preferably CPV15BP, and the third chamber is connected with the second chamber, and a throttle valve is arranged at the connection point, and the model of the throttle valve is preferably PSL804A; and the invention also comprises a control system, and a control system is included. The system includes a controller, a camera, and temperature sensors and pressure sensors whose number corresponds to the placement table 23. The controller is fixedly connected to the sample table 1 by bolts, and the temperature sensor and the pressure sensor are fixedly connected to the top wall of the placement table 23 by bolts. The model of the controller is preferably 2080Micro850, the model of the camera is preferably SNC-VB770, the model of the temperature sensor is preferably 718-272969-001, and the model of the pressure sensor is preferably IMS-C04A. The camera, the temperature sensor, the pressure sensor, the first transmission motor 251, the first air pump 32, the first solenoid valve, the throttle valve, the refrigerator and the heating wire are all electrically connected to the controller.

[0042] The specific implementation process is as follows: when using this device, start this device, and place the samples to be tested on the placement table 23 in descending or ascending order according to the required temperature for detection. During the placement process, the user simultaneously inputs the name of the placed sample, that is, the type information, into the controller. The first pressure sensor continuously collects the pressure information applied by the sample on the placement table 23. The controller matches the placement table 23 and the type information according to the position and type information of the first pressure sensor where the pressure information changes.

[0043] The controller determines the detection temperature required for the sample based on the type information. When performing detection, the controller controls the first transmission motor 251 to work. The first transmission motor 251 drives the movable ring 24 to rotate through the first gear 252 and the first rack 253, thereby driving the placement table 23 to move. At the same time, the camera continuously collects image information of the placement table 23, and the temperature sensor continuously collects temperature information of the sample on the placement table 23.

[0044] When the temperature information is lower than the lowest test temperature in the sample, such as the detection temperatures of the samples are 1, 2, 3 and 4 respectively, and the temperature information is 0, when the placement table 23 corresponding to the sample with the lowest detection temperature, that is, the detection table 26 of the sample with a detection temperature of 1, is moved to the adjustment box 21 corresponding to the heating wire, the controller controls the first transmission motor 251 to stop working, and then 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 to increase the air pressure in the first chamber, thereby pushing the inner rod 312 to move in the direction of the placement table 23, when the inner After the end of the rod 312 away from the outer rod 311 contacts the placement table 23, the buckle on the inner rod 312 is buckled into the buckle of the placement table 23, so that the two are connected, and the inner rod 312 pushes the placement table 23 to move in the direction of the detection table 26 until the placement table 23 reaches the center position of the detection table 26 in the image information. During this process, the controller controls the electric heating wire to work, and the electric heating wire heats the temperature-conducting telescopic rod 31, and the heat-insulating telescopic rod heats the placement table 23 by heat transfer, thereby heating the sample and the environment around the sample, so as to achieve the process of pushing the sample into the detection table 26. The temperature of the sample, when the sample temperature rises to the detection temperature, the controller controls the electric heating wire to stop working, so that the sample can be tested at a suitable temperature. After the test is completed, the controller controls the first air pump 32 to work again, extract the gas in the third chamber, so that the temperature-conducting telescopic rod 31 is shortened, thereby driving the placement table 23 to return to its original position. Then the controller controls the first transmission motor 251 to work again, and drives the placement table 23 corresponding to the adjacent sample with a slightly higher test temperature, that is, the placement table 23 corresponding to the sample with a detection temperature of 2, to enter the placement table corresponding to the electric heating wire through the first gear 252, the first rack 253 and the moving ring 24. In the adjustment box, the upper placement table 23 is in contact with the connection of the inner rod 312, and the buckle of the next placement table 23 is connected with the buckle of the inner rod 312. The controller controls the electric heating wire to increase the power to work, thereby improving the problem of the temperature conductive telescopic rod 31 being transmitted to the placement table 23. When the sample on the upper placement table 23 is tested, there is still residual temperature on the test table 26. Under the influence of the temperature on the test table 26 and the temperature of the temperature conductive telescopic rod 31, the sample on the placement table 23 can quickly rise to the required testing temperature. After that, the user tests the sample and repeats the above steps until all samples are tested.

[0045] When the temperature information is higher than the highest detection temperature in the sample, such as the detection temperatures of the samples are 1, 2, 3 and 4 respectively, and the temperature information is 5, the controller controls the first transmission motor 251 to work, drives the moving ring 24 to rotate, and drives the sample with the highest test temperature, that is, the sample with a detection temperature of 4, to enter the adjustment box 21 corresponding to the refrigerator, and controls the first air pump 32 to work and the corresponding first solenoid valve to open, and pushes the placement table 23 into the detection table 26 through the temperature-conducting telescopic rod 31, and at the same time reduces the temperature of the sample on the placement table 23 to the set temperature. After the user detects the sample, the controller controls the first air pump 32 to work again, drives the temperature-conducting telescopic rod 31 to shorten, and drives the placement table 23 to reset, and then repeats the above steps to cool down the adjacent samples with slightly lower detection temperatures until all samples are tested.

[0046] 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, the temperature information is 4. At this time, the controller controls the first transmission motor 251 to move the sample with the detection temperature of 5 to the adjustment box 21 corresponding to the heating wire through the moving ring 24, and controls the first air pump 32 and the heating wire to work, and controls the corresponding first solenoid valve to open, so as to increase the temperature of the sample and push it to the detection table 26 for detection. Then, the controller controls the first air pump 32 to work so that the placement table 23 is reset, and then the controller controls the first transmission motor 251 to work again, so as to drive the placement table 23 to move. The placement table 23 and the inner The rod 312 disengages, and at the same time, the controller controls the first air pump 32 to work, driving the temperature-conducting telescopic rod 31 to contract, so that the temperature-conducting telescopic rod 31 is reset, and then the corresponding first solenoid valve is controlled to close. When the placement table 23 of the sample with a detection temperature of 3 is moved to the adjustment box 21 corresponding to the refrigerator, the controller operates the first solenoid valve and the air pump corresponding to the adjustment box 21, and the temperature-conducting telescopic rod 31 pushes the placement table 23 into the adjustment box 21, and at the same time, the placement table 23 is cooled. After the sample detection is completed, the controller drives the sample to reset through the operation of the first air pump 32, and then repeats the above steps to move and cool down the samples with subsequent detection temperatures of 2 and 1 in turn.

[0047] When the controller blows air into the third chamber to drive the temperature-conducting telescopic rod 31 to extend, the controller controls the corresponding throttle valve to open, so that part of the gas with rising or falling temperature in the third chamber enters the second chamber to synchronously adjust the temperature of the detection table 26. Since the solid conducts temperature better than the gas, the temperature change speed of the detection table 26 is slower than that of the placement table 23, so it is not easy for the temperature of the detection table 26 to be over-adjusted, causing the sample temperature of the detection table 26 to rise above the detection temperature, or drop to below the detection temperature.

[0048] At the same time, when the user does not place the samples in sequence according to the detection temperature or the initial temperature information of each sample is different, the controller controls the first transmission motor 251 to work, drives the placement table 23 to move, and sequentially sends the samples whose detection temperature is higher than the temperature information to the adjustment box 21 corresponding to the refrigerator, and is pushed to the detection table 26 by the temperature-conducting telescopic rod 31 corresponding to the adjustment box 21, and after cooling treatment, the remaining samples whose detection temperature is lower than the temperature information are sequentially sent to the adjustment box 21 corresponding to the heating wire, and are pushed to the detection table 26 by the temperature-conducting telescopic rod 31 corresponding to the adjustment box 21, and are heated. In this process, if the detection temperature difference between two adjacent samples is greater than the set value, and the two samples need to be cooled and heated respectively, such as when the previous sample needs to be heated and the next sample needs to be cooled, and the detection temperatures of the two samples If the difference is greater than the set value, the controller pushes the previous sample to the detection table 26 and performs a temperature increase treatment at the same time. After the detection is completed and it is reset, the controller controls the first transmission motor 251 to move the next sample to the adjustment box 21 corresponding to the refrigerator. The controller controls the first air pump 32, the first solenoid valve and the throttle valve corresponding to the adjustment box 21 to open, and controls the throttle valve to increase the gas flow rate from the third chamber to the second chamber, so that the air pressure in the third chamber is difficult to rise, and the extension of the temperature-conducting telescopic rod 31 is avoided. At the same time, the air with a lowered temperature enters the second chamber, and the detection table 26 is cooled in advance until the sample table 1 moves into the adjustment box 21. The controller controls the throttle valve to restore the gas flow rate from the third chamber to the second chamber, so that the temperature-conducting telescopic rod 31 is extended to push the placement table 23 to move, and then the subsequent cooling and moving steps are completed.

[0049] Based on the above scheme, in order to make the present 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 transmission motor 251 to work according to the selection information. Therefore, the user can input the next sample information to be tested, that is, the selection information, into the controller according to the experimental needs, and modify the detection sequence. The controller controls the first air pump 32, the first solenoid valve, the throttle valve and the first transmission motor 251 according to the selection information, and preferentially pushes the placement table 23 corresponding to the sample to the detection table 26 according to the temperature information and the detection temperature of the sample, and adjusts the temperature of the sample.

[0050] Based on the above scheme, in order to avoid the two samples that need to be cooled and heated respectively from affecting the other sample by heat transfer when they are subjected to the temperature treatment of the temperature-conducting telescopic rod 31 respectively, a closing component is provided at the connection between the first chamber and the adjustment box, and the closing component includes a placement groove opened on the sample stage 1, and a baffle 27 is slidably fitted in the placement groove. The material of the baffle 27 is preferably polyurethane foam plastic, and an airbag is bonded and fixed to the side wall of the placement groove of the baffle 27. The airbag is bonded and fixed to the side wall of the placement groove. The airbag is connected to a second air pump, and the model of the second air pump is preferably KYK38VPM, and a second solenoid valve is provided at the connection, and the model of the second solenoid valve is preferably FPDJ-05. The second solenoid valve and the second air pump are both electrically connected to the controller, and the controller The second air pump and the second solenoid valve are controlled to operate according to the type information, selection information, temperature information, pressure information and image information. Thus, when the difference in detected temperature between two adjacent samples is greater than the set value and the two samples need to be heated up or cooled down respectively, before the controller controls the first air pump 32 to operate, the corresponding second air pump is controlled to operate, and the second air pump inflates the airbag to expand the airbag, pushing the baffle 27 to move upward, thereby cutting off the connection between the first chamber and the regulating box 21. The temperature in the baffle 27 assembly regulating box 21 is transferred outward, thereby preventing the next adjacent sample from rising or falling with the temperature of the sample, thereby increasing the difference between the temperature information of the next sample and its detected temperature, thereby extending the time for adjusting the temperature of the next sample.

[0051] Based on the above scheme, since during the gas flow process, the molecules in the gas may interact with the laser beam, resulting in attenuation or scattering of the 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 platform 26 divides the second chamber into an upper chamber and a lower chamber, and the third chamber is connected to the lower chamber. Therefore, the gas in the third chamber enters the lower part of the detection platform 26, and does not affect the laser beam irradiation position on the upper part of the detection platform 26, thereby avoiding the influence of gas flow on the experiment.

[0052] Based on the above scheme, in order to speed up the speed of the device to adjust the sample temperature, the materials of the temperature-conducting telescopic rod 31, the detection platform 26 and the placement platform 23 are all high-purity oxygen-free copper. Therefore, high-purity oxygen-free copper has a higher thermal conductivity, which speeds up the temperature transfer on the temperature-conducting telescopic rod 31, the detection platform 26 and the placement platform 23, thereby speeding up the speed of the heating wire and the refrigerator to adjust the sample temperature. 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 the device.

[0053] Based on the above scheme, in order to reduce the impact of the device on the experiment, the material of the window 22 is optical quartz glass. Therefore, the optical quartz glass can reduce the shielding of the laser by the window 22. At the same time, when the laser is focused on the sample through the optical quartz glass, the subsequent characteristic peaks are not prone to have stray peaks.

[0054] Based on the above scheme, in order to prevent the vibration generated during the operation of the refrigerator from being transmitted to the sample table 1 and affecting the experiment, a shock-proof pad made of elastic material is bonded and fixed to the top wall of the detection table 26. As a result, the shock-proof pad can convert part of the vibration energy into its own elastic potential energy, thereby absorbing the vibration energy and preventing the vibration from affecting the sample detection.

[0055] Example 2

[0056] As attached Figure 7 As shown: an optical path device of a confocal Raman spectrometer, applied to the above-mentioned confocal Raman spectrometer, including a housing 4, in which a laser 71, a beam expander 72, a first filter 73 and a microscope 74 are arranged in sequence from top to bottom. The microscope 74 is used to converge the laser light emitted by the laser 71 on the sample stage 1. The inner side wall of the housing 4 is slidably matched with a receiving box 56 with an opening at the bottom. The receiving box 56 is provided with a receiving component 5. The receiving component 5 is used to receive the Raman signal of the laser light emitted by the laser transmitter after being scattered by 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 detector 55 is used to receive and detect the laser 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 arranged in the receiving box 56 and arranged from top to bottom. The receiving box 56 is provided with a second driving assembly 6, and the second driving assembly 6 is used to drive the receiving box 56 to move horizontally along the inner wall of the shell 4. The second driving assembly 6 includes a second transmission motor 61. The model of the second transmission motor 61 is preferably MY36GP-36ZY. The output end of the second transmission motor 61 is coaxially fixedly connected with a second gear 62 by bolts, and the second gear 62 is meshed with a second rack 63. The second rack 63 is fixedly connected to the outer wall by bolts.

[0057] The specific implementation process is as follows: when using the device, start the device, the laser 71 emits laser, the laser passes through the beam expander 72, the first filter 73 and the microscope 74 in sequence to irradiate the sample and scatter on the sample, the scattered Raman signal passes through the second filter 51, the second lens 52, the grating 53, the first lens 54 in sequence to enter the CCDCCD detector 55, and is collected by the CCDCCD detector 55, and at the same time the second transmission motor 61 is started, the second transmission motor 61 drives the second gear 62 to rotate, and drives the receiver to move horizontally along the inner wall of the housing 4 through the second rack 63, so as to receive Raman signals at different angles, and by comparing the Raman signals at various angles, the optimal Raman information is selected to avoid experimental errors caused by the uneven surface of the sample.

[0058] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and / or characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A confocal Raman spectrometer, characterized in that: It includes an adjustment component and a temperature adjustment component arranged on a sample stage, the adjustment component includes a first chamber and a second chamber opened in the sample stage, the first chamber is annular, the first chamber is connected with two adjustment boxes, and the adjustment boxes are both connected with the second chamber, a driving chamber is opened below the first chamber, the driving chamber is connected with the first chamber, and a ring-shaped moving ring is arranged at the connecting point, a first driving component is arranged on the bottom wall of the moving ring, the first driving component is used to drive 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 all slidably matched with the bottom wall of the first chamber, the top walls of the first chamber and the second chamber are both provided with windows, and a detection table is fixedly connected in the second chamber; The temperature adjustment component includes two temperature-conducting telescopic rods fixedly connected to the refrigerator and the electric heating wire respectively, the temperature-conducting telescopic rods are slidably matched with the side wall of the adjustment box away from the first chamber, and the ends of the temperature-conducting telescopic rods close to the placement table can be detachably connected to the adjacent placement table, a third chamber is arranged in the temperature-conducting telescopic rod, the third chamber is connected to the first air pump, and a first solenoid valve is arranged at the connection point, and the third chamber is connected to the second chamber, and a throttle valve is arranged at the connection point; It also includes a control system, which is used 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.

2. The confocal Raman spectrometer according to claim 1, characterized in that: The control system includes a controller, a camera, and temperature sensors and pressure sensors whose number corresponds to the placement table; The temperature sensors are used to collect temperature information of samples on the test bench; The pressure sensors are used to collect the pressure information applied by the sample on the placement table; The camera is used to collect image information including the placement table; The controller is used to receive the type information of the sample input by the user, and control the operation of the first driving component, the first air pump, the first solenoid valve, the throttle valve, the refrigerator and the heating wire according to the type information, temperature information, pressure information and image information.

3. The confocal Raman spectrometer according to claim 2, characterized in that: The first driving component includes a first transmission motor, which is fixedly connected to the side wall of the driving chamber, and the output shaft of the first transmission motor is coaxially fixedly connected to the first gear, and the first gear is meshed with a first rack, and the first rack is fixedly connected to the bottom wall of the movable ring, and the controller controls the operation of the first transmission motor according to type information, temperature information, pressure information and image information.

4. The confocal Raman spectrometer according to claim 3, characterized in that: The controller can also be used to receive selection information input by the user, and the controller controls the first air pump, the first solenoid valve, the throttle valve, the refrigerator, the heating wire and the first transmission motor to work according to the selection information.

5. The confocal Raman spectrometer according to claim 4, characterized in that: A closing component is provided at the connection point between the first chamber and the adjusting box, and the closing component includes a placement groove opened on the sample table, a baffle is slidably fitted in the placement groove, an airbag is fixedly connected to the side wall of the baffle close to the placement groove, the airbag is fixedly connected to the side wall of the placement groove, the airbag is connected to the second air pump, and a second solenoid valve is provided at the connection point, and the controller controls the operation of the second air pump and the second solenoid valve according to type information, selection information, temperature information, pressure information and image information.

6. The confocal Raman spectrometer according to claim 5, characterized in that: The testing platform divides the second chamber into an upper chamber and a lower chamber, and the third chamber is connected to the lower chamber.

7. The confocal Raman spectrometer according to claim 6, characterized in that: The materials of the temperature-conducting telescopic rod, the testing table and the placing table are all high-purity oxygen-free copper.

8. The confocal Raman spectrometer according to claim 7, characterized in that: The window is made of optical quartz glass.

9. The confocal Raman spectrometer according to claim 8, characterized in that: The top wall of the testing table is provided with a shock-proof pad made of elastic material.

10. An optical path device of a confocal Raman spectrometer, applied to the confocal Raman spectrometer according to any one of claims 1 to 9, characterized in that: The invention comprises a shell, in which a laser, a beam expander, a first filter and a microscope are arranged in sequence from top to bottom. The microscope is used to converge the laser light emitted by the laser on the sample stage. A receiving box with an opening at the bottom is slidably matched with the inner wall of the shell. A receiving component is arranged in the receiving box. The receiving component is used to receive the Raman signal of the laser emitted by the laser transmitter after being scattered by the sample. A second driving component is arranged on the receiving box. The second driving component is used to drive the receiving box to move horizontally along the inner wall of the shell.

Images