Shading device for confocal microscopic Raman spectrometer

Abstract

The utility model provides a shading device for a confocal microscopic Raman spectrometer, and relates to the confocal microscopic Raman spectrometer, the shading device comprises a semi-enclosed cassette, the bottom surface of the semi-enclosed cassette is an opening, the bottom ends of the left and right side walls of the semi-enclosed cassette are both provided with connecting slide rails capable of being connected with an external sample placing table, and the connecting slide rails are provided with connecting holes. The connecting sliding rails are connected with the limiting sliding grooves in an inserted mode, an observation window is formed in the top face of the half-surrounding cassette, and a detachable rear cover plate is arranged on the back face of the half-surrounding cassette. When in use, the semi-surrounded cassette is arranged to cover the sample placing table to cover and shade the transparent solution, and the observation window is formed in the top of the semi-surrounded cassette for laser to enter the transparent solution to excite particles in the solution and for an optical lens of a microscope to observe the transparent solution, so that the effects of reducing the influence of ambient light on the transparent solution are achieved; and the irradiation of laser and the observation of a microscope are not hindered.

Description

Technical Field

[0001] This utility model relates to the field of confocal micro Raman spectrometer technology, and in particular to a light-shielding device for a confocal micro Raman spectrometer. Background Technology

[0002] The confocal Raman microscopy system combines a research-grade microscope with a high-performance Raman spectrometer, and is applied to research topics in materials surfaces, interfaces, liquid crystals, minerals, biomedicine, and environmental protection. It can test solids, liquids, and gases, including organic compounds, inorganic compounds, polymers, biomembranes, and various materials (such as ceramics, diamond, and nanomaterials). The system is applicable to disciplines such as physics, chemistry, materials science, biology, pharmaceuticals, biochemistry, medicine, forensic science, criminal investigation, geology, and environmental science.

[0003] When analyzing solution samples using a confocal micro Raman spectroscopy instrument, a transparent container is generally used as the carrier. If the liquid is volatile, a capillary tube must be used, and the head of the capillary tube must be sealed. Since both the container and the capillary tube are transparent, this is relatively less problematic if the solution is colored. However, if the solution has high transparency, it is easily affected by ambient light, resulting in a weak Raman spectrum or only the spectrum of the container being measured. It is very troublesome to repeatedly adjust the concentration of the solution, the ambient light, and the type of container before the transparent solution can be observed.

[0004] Therefore, this application proposes a light-shielding device for a confocal micro Raman spectrometer to improve the convenience of observing transparent solutions. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a light-shielding device for a confocal micro Raman spectrometer, which solves the problem that it is inconvenient to observe transparent solutions in the prior art.

[0006] To achieve the above and other related objectives, this utility model provides a light-shielding device for a confocal micro Raman spectrometer.

[0007] The light-shielding device includes a semi-enclosed dark box with an open bottom. The bottom of the left and right side walls of the semi-enclosed dark box are provided with connecting slide rails that can be connected to an external sample placement stage. The connecting slide rails are inserted into the limiting slide grooves. The top surface of the semi-enclosed dark box has an observation window, and the back of the semi-enclosed dark box has a removable back cover.

[0008] Preferably, the connection between the semi-enclosed box and the rear cover is provided with a sealing groove adapted to the rear cover, and the inner wall of the sealing groove is provided with a locking device, and the rear cover is fixed by the locking device.

[0009] Preferably, the locking device is a permanent magnet, and the locking devices are evenly distributed on the wall of the sealing groove. The side of the rear cover plate facing the locking device is provided with a magnetic suction element adapted to the locking device.

[0010] Preferably, the wall of the semi-enclosed dark box is composed of an outer sealing layer and a light-absorbing layer, wherein the outer sealing layer is located on the outer layer and the light-absorbing layer is located on the inner layer.

[0011] Preferably, the semi-enclosed dark box is also equipped with a supplementary lighting device;

[0012] The supplementary lighting device includes a power supply component installed on the outer surface of the semi-enclosed dark box and a supplementary light extending into the interior of the semi-enclosed dark box. The power supply component supplies power to the supplementary light, and a control switch is provided between the power supply component and the supplementary light to control the illumination of the supplementary light.

[0013] Preferably, there are multiple supplementary lights, which are equidistantly distributed on the inner walls of the left and right sides of the semi-enclosed dark box, and the supplementary lights are cold light source LEDs.

[0014] Preferably, a heat-conducting component is provided between the outer sealing layer and the light-absorbing layer, the supplementary light is installed in the gap between two adjacent heat-conducting components, and the power cord of the supplementary light is connected to the control switch through the gap of the heat-conducting component.

[0015] A light-shielding mechanism for a confocal micro Raman spectrometer includes a sample stage and a light-shielding device.

[0016] The sample placement platform has a limiting groove on its upper surface that matches the light-shielding device. The light-shielding device is installed above the sample placement platform through the limiting groove and is used to block ambient light.

[0017] A microscope for Raman detection includes the light-shielding structure described above.

[0018] The sample placement stage is positioned below the optical lenses of the microscope body to support the sample. The light-shielding device is positioned on the sample placement stage to block ambient light. The supplementary lighting device is positioned on both sides of the light-shielding device and can be used to supplement the light inside the light-shielding device.

[0019] A Raman detection device includes a microscope for Raman detection as described above.

[0020] The sample placement stage is positioned below the optical lenses of the microscope body to support the sample. The light-shielding device is positioned on the sample placement stage to block ambient light. The supplementary lighting device is positioned on both sides of the light-shielding device and can be used to supplement the light inside the light-shielding device. The Raman spectrometer is coupled to the microscope body.

[0021] As described above, the light-shielding device for a confocal Raman microscopy spectrometer of this invention has the following beneficial effects:

[0022] This invention achieves the goal of reducing the influence of ambient light on the transparent solution by setting up a semi-enclosed dark box to cover the sample placement stage and blocking light, and opening an observation window at the top of the semi-enclosed dark box to allow laser light to enter the transparent solution to excite the particles in the solution and to allow the optical lens of the microscope to observe the transparent solution.

[0023] This invention connects the semi-enclosed dark box with a connecting slide rail and a limiting slide groove, and sets a rear cover plate that can be detachably installed on the back of the semi-enclosed dark box. When performing transparent solution analysis, the sample can be placed first for focusing and adjustment, and then the semi-enclosed dark box can be installed for light blocking, which improves the convenience of use. Moreover, the semi-enclosed dark box can be disassembled and separated at any time when light blocking is not required.

[0024] This invention provides supplementary lighting by installing a supplementary light on the inner wall of a semi-enclosed dark box. During microscope observation, the supplementary light provides auxiliary illumination, thereby reducing ambient light interference and providing supplementary lighting to the microscope to prevent observation from being impossible due to a lack of light source.

[0025] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value. Attached Figure Description

[0026] Figure 1 The diagram shown is a structural schematic of this utility model.

[0027] Figure 2 The diagram shown is an assembly schematic of the light-shielding device of this utility model.

[0028] Figure 3 The image shown is a front view of the structure of the rear cover plate of this utility model.

[0029] Figure 4 The diagram shown is an installation schematic of the rear cover plate of this utility model.

[0030] Figure 5 The image shown is a rear view of the semi-enclosed dark box structure of this utility model.

[0031] Figure 6 The diagram shown is a structural schematic of the semi-enclosed dark box arm surface of this utility model.

[0032] Component designation explanation

[0033] 1. Confocal Raman Microscope Body; 2. Sample Stage; 201. Limiting Slide; 3. Light Shielding Device; 301. Semi-Enclosed Dark Box; 3011. Outer Sealing Layer; 3012. Light Absorbing Layer; 3013. Heat Conducting Component; 302. Connecting Slide Rail; 303. Observation Window; 304. Sealing Groove; 305. Rear Cover Plate; 306. Locking Device; 4. Supplemental Lighting Device; 401. Power Supply Component; 402. Supplemental Light Lamp; 403. Control Switch. Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0035] Please see Figures 1 to 6 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0036] like Figures 1-6 As shown, this utility model provides a light-shielding device for a confocal micro Raman spectrometer. The light-shielding device 3 includes a semi-enclosed dark box 301 placed on the sample stage 2, with the bottom surface of the semi-enclosed dark box 301 being open. Therefore, when a sample is placed on top of the sample stage 2 and the semi-enclosed dark box 301 is installed by pushing it parallel to the sample stage 2, the bottom surface of the semi-enclosed dark box 301 will not interfere with the sample.

[0037] The sample placement stage 2 is mounted on the main body 1 of the confocal micro Raman spectrometer. When the sample is being detected, it is placed on the sample placement stage 2, and the focus is achieved by adjusting the position of the sample placement stage 2 or the sample.

[0038] Parallel limiting grooves 201 are provided on both sides above the sample placement stage 2. A light-shielding device 3 is installed above the sample placement stage 2 via the limiting grooves 201, allowing for easy installation and removal of the light-shielding device 3. The installation angle and position of the light-shielding device 3 are limited by the position of the limiting grooves 201. The light-shielding device 3 is used to block ambient light, thereby reducing the interference of ambient light on the transparent solution and eliminating or reducing interference in the Raman spectrum.

[0039] The bottom ends of both left and right side walls of the semi-enclosed junction box 301 are equipped with connecting slide rails 302 that connect to limiting slide grooves 201. The connecting slide rails 302 and limiting slide grooves 201 are plugged into each other. Through the cooperation of the connecting slide rails 302 and limiting slide grooves 201, the installation position and angle of the semi-enclosed junction box 301 can be restricted. Furthermore, the plug-in installation of the semi-enclosed junction box 301 improves the ease of installation.

[0040] The top surface of the semi-enclosed cassette 301 has an observation window 303. This window allows laser light to penetrate and contact the sample, and enables the microscope on the confocal micro-Raman spectrometer body 1 to observe the sample. A removable rear cover 305 is provided on the back of the semi-enclosed cassette 301 to seal the back of the cassette 301. This prevents ambient light from entering through the open opening on the back of the cassette 301 and interfering with the transparent solution sample. The removable rear cover 305 improves ease of installation when installing the semi-enclosed cassette 301. Specifically, the rear cover 305 is first removed, then the semi-enclosed cassette 301 is pushed in for installation, allowing the back of the cassette 301 to pass over the transparent solution sample. After the semi-enclosed cassette 301 reaches the designated installation position, the rear cover 305 is then installed to seal and block light from entering the back of the cassette 301.

[0041] In some embodiments, a sealing groove 304 adapted to the rear cover 305 is provided at the connection between the semi-enclosed cassette 301 and the rear cover 305. The function of the sealing groove 304 is to limit the rear cover 305, thereby ensuring that the rear cover 305 can completely seal the back of the semi-enclosed cassette 301 when it is installed, and preventing light leakage due to the tilt of the rear cover 305 during installation. A locking device 306 is provided on the inner wall of the sealing groove 304, and the rear cover 305 is fixed by the locking device 306 to ensure the stability of the rear cover 305 during installation and to prevent the rear cover 305 from slipping off during experimental operations.

[0042] In some embodiments, the locking device 306 is a permanent magnet. The locking devices 306 are evenly distributed on the wall surface of the sealing groove 304. The side of the rear cover plate 305 facing the locking device 306 is provided with a magnetic suction element that is compatible with the locking device 306. When the rear cover plate 305 is installed, the permanent magnet and the magnetic suction element attract each other to position the rear cover plate 305, thus achieving a stable connection in a simple way.

[0043] In some embodiments, the wall of the semi-enclosed cassette 301 is composed of an outer sealing layer 3011 and a light-absorbing layer 3012. The outer sealing layer 3011 is located on the outer layer, and the light-absorbing layer 3012 is located on the inner layer. When a laser beam is used to irradiate a material, the laser will be reflected on the surface of the material. These reflected lights will form diffuse reflection on the inner wall of the semi-enclosed cassette 301, which will interfere with the detection of the material. In order to avoid or reduce the interference of diffuse reflection, a light-absorbing layer 3012 is provided to absorb photons and reduce the generation of diffuse reflection. When a laser irradiates an object, a large amount of heat will be generated. In order to avoid the large accumulation of heat in the sealed space inside the semi-enclosed cassette 301 and cause the solution to react, a metal outer sealing layer 3011 is provided to absorb and conduct heat in large quantities, and conduct the heat to the air.

[0044] In some embodiments, a supplementary lighting device 4 is also installed on the semi-enclosed dark box 301. During the use of the microscope, a light source is required for illumination, and the microscope cannot work in a dark environment. If the light-shielding device 3 is removed directly, the process is quite troublesome. Therefore, supplementary lighting is provided by setting up the supplementary lighting device 4.

[0045] The supplementary lighting device 4 includes a power supply component 401 mounted on the outer surface of the semi-enclosed dark box 301 and a supplementary light 402 extending into the interior of the semi-enclosed dark box 301. The power supply component 401 supplies power to the supplementary light 402, causing the supplementary light 402 to emit light and achieve the supplementary lighting function. A control switch 403 is provided between the power supply component 401 and the supplementary light 402 to control the emission of the supplementary light 402, making the emission of the supplementary light 402 controllable for easy operation. The power supply component 401 can be a lithium battery or a power module, selected according to the working environment.

[0046] In some embodiments, multiple supplementary lights 402 are equidistantly distributed on the inner walls of the semi-enclosed dark box 301 on the left and right sides. By contrasting the light sources on the left and right sides, the illumination intensity can be increased while avoiding the generation of shadows. If shadows are generated on the material surface, they can easily interfere with microscopic observation. The supplementary lights 402 are cold light source LEDs, used to reduce the heat generated during illumination, thus reducing heat accumulation in the enclosed space and preventing substances in the solution from becoming unstable and undergoing chemical reactions due to temperature increases.

[0047] In some embodiments, a heat-conducting element 3013 is provided between the outer sealing layer 3011 and the light-absorbing layer 3012. The heat-conducting element 3013 provides space for the supplementary light 402 to be installed, and the gaps between the heat-conducting elements 3013 can form a wire groove. The supplementary light 402 is installed in the gap between two adjacent heat-conducting elements 3013, so that only the light-emitting device of the supplementary light 402 is exposed, which reduces the space occupied by the supplementary light 402. The power lines of all supplementary lights 402 are connected in parallel inside the heat-conducting elements 3013, and the power lines are connected to the control switch 403 through the gaps between the heat-conducting elements 3013.

[0048] A light-shielding device for a confocal micro Raman spectrometer includes a sample stage 2 and a light-shielding device 3.

[0049] The upper surface of the sample stage 2 is provided with a limiting groove 201 that matches the light-shielding device 3. The light-shielding device 3 is installed above the sample stage 2 through the limiting groove 201. The light-shielding device 2 is used to block ambient light. This enables convenient installation of the light-shielding device 3 and improves the working efficiency of the Raman spectrometer.

[0050] A microscope for Raman detection includes a microscope body, a sample stage 2, a light-shielding device 3, and a supplementary light device 4;

[0051] The sample stage 2 is positioned below the optical lens of the microscope body to support the sample. The light-shielding device 3 is positioned on the sample stage 2 to block ambient light. The supplementary light device 4 is positioned on both sides of the light-shielding device 3 and can be used to supplement the light inside the light-shielding device 3, thereby achieving the purpose of protecting the sample, blocking interference from ambient light, and supplementing the light of the microscope.

[0052] A Raman detection device includes a microscope body, a Raman spectrometer, a sample stage 2, a light-shielding device 3, and a supplementary light device 4;

[0053] The sample stage 2 is positioned below the optical lens of the microscope body to support the sample. The light shielding device 3 is positioned on the sample stage 2 to block ambient light. The supplementary light device 4 is positioned on both sides of the light shielding device 3 and can be used to supplement the light inside the light shielding device 3. The Raman spectrometer is coupled to the microscope body.

[0054] The specific usage process of this utility model is as follows:

[0055] Place the container with the solution on top of sample placement stage 2, and adjust its position and focus;

[0056] After removing the rear cover plate 305, connect the connecting slide rail 302 to the limiting slide groove 201 so that the semi-enclosed dark box 301 completely covers the container with solution. Then, put the rear cover plate 305 back on to form a sealed space.

[0057] Make minor adjustments to the position of the semi-enclosed dark box 301 so that the observation window 303 is perpendicular and collinear with the container and the laser generator;

[0058] When the microscope needs to be used, the supplementary light 402 is turned on by controlling switch 403 to provide supplementary light, so that the microscope can receive the light source and realize the function of the microscope.

[0059] When a microscope and a Raman spectrometer need to be used simultaneously, the illumination brightness of the supplementary light 402 is adjusted to find a suitable illumination level.

[0060] In summary, the light-shielding device for a confocal micro Raman spectrometer of this invention achieves the goal of reducing the influence of ambient light on the transparent solution without hindering laser irradiation and microscope observation by setting a semi-enclosed dark box 301 to cover the sample placement stage 2 and opening an observation window 303 on the top of the semi-enclosed dark box 301 to allow laser light to enter the transparent solution to excite the particles in the solution and to allow the optical lens of the microscope to observe the transparent solution.

[0061] Meanwhile, by connecting the semi-enclosed dark box 301 with the connecting slide rail 302 and the limiting slide groove 201, and setting the rear cover plate 305 to be installed on the back of the semi-enclosed dark box 301 in a detachable manner, the present invention can first place the sample for focusing and adjustment when performing transparent solution analysis, and then install the semi-enclosed dark box 301 for light blocking, which improves the convenience of use. Moreover, the semi-enclosed dark box 301 can be disassembled and separated at any time when light blocking is not required.

[0062] Furthermore, by providing a supplementary light 402 on the inner wall of the semi-enclosed dark box 301, this utility model provides auxiliary illumination during microscope observation, thereby reducing ambient light interference and providing supplementary light to the microscope to prevent observation from being impossible due to the lack of a light source.

[0063] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0064] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A light-shielding device for a confocal micro Raman spectrometer, characterized in that: The light-shielding device (3) includes a semi-enclosed dark box (301), the bottom surface of which is an open opening. The bottom ends of the left and right side walls of the semi-enclosed dark box (301) are provided with connecting slide rails (302) that can be connected to an external sample placement stage. The connecting slide rails (302) are inserted into the limiting slide grooves (201). The top surface of the semi-enclosed dark box (301) is provided with an observation window (303), and the back of the semi-enclosed dark box (301) is provided with a removable back cover plate (305).

2. The light-shielding device for a confocal Raman microscopy spectrometer according to claim 1, characterized in that: The semi-enclosed dark box (301) and the rear cover plate (305) are provided with a sealing groove (304) that is adapted to the rear cover plate (305). The inner wall of the sealing groove (304) is provided with a locking device (306), and the rear cover plate (305) is fixed by the locking device (306).

3. The light-shielding device for a confocal micro Raman spectrometer according to claim 2, characterized in that: The locking device (306) is a permanent magnet. The locking devices (306) are evenly distributed on the wall of the sealing groove (304). The rear cover plate (305) facing the locking device (306) is provided with a magnetic suction element that is compatible with the locking device (306).

4. The light-shielding device for a confocal micro Raman spectrometer according to claim 1, characterized in that: The wall of the semi-enclosed dark box (301) is composed of an outer sealing layer (3011) and a light-absorbing layer (3012), with the outer sealing layer (3011) located on the outer layer and the light-absorbing layer (3012) located on the inner layer.

5. The light-shielding device for a confocal Raman microscopy spectrometer according to claim 4, characterized in that: The semi-enclosed dark box (301) is also equipped with a supplementary lighting device (4); The supplementary lighting device (4) includes a power supply component (401) installed on the outer surface of the semi-enclosed dark box (301) and a supplementary light (402) extending into the interior of the semi-enclosed dark box (301). The power supply component (401) supplies power to the supplementary light (402), and a control switch (403) is provided between the power supply component (401) and the supplementary light (402) to control the illumination of the supplementary light (402).

6. The light-shielding device for a confocal Raman microscopy spectrometer according to claim 5, characterized in that: The number of fill lights (402) is multiple, and the multiple fill lights (402) are equidistantly distributed on the inner walls of the left and right sides of the semi-enclosed dark box (301). The fill lights (402) are cold light source lamp beads.

7. The light-shielding device for a confocal Raman microscopy spectrometer according to claim 6, characterized in that: A heat-conducting element (3013) is provided between the outer sealing layer (3011) and the light-absorbing layer (3012). The supplementary light (402) is installed in the gap between two adjacent heat-conducting elements (3013). The power line of the supplementary light (402) is connected to the control switch (403) through the gap of the heat-conducting element (3013).

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