Polarizing microscope cold and hot stage with window antifouling structure

Abstract

The invention relates to the technical field of microscope cold and hot tables, and discloses a polarizing microscope cold and hot table with a window antifouling structure, which comprises a cold and hot table, an upper cover is arranged at the top of the cold and hot table, a connecting assembly is arranged between the cold and hot table and the upper cover, a window mirror is mounted at the center of the upper cover, and a mounting groove is formed in the bottom of the upper cover. An anti-fouling assembly is arranged in the mounting groove and comprises a mounting frame slidably connected to the inner side wall of the mounting groove, and a cross rod is fixedly connected to the center of the mounting frame. According to the cooling and heating table, the wiping block is driven by the motor to automatically wipe the bottom of the window mirror in a reciprocating mode, shutdown for manual cleaning is not needed, sample volatile matter, condensate water or dust and other pollutants on the window mirror can be removed in real time, it is avoided that stains block a light path to affect polarization observation precision, and the cooling and heating table can be used for energetic material such as casting carrier crystal morphology and rule research; the method is especially suitable for long-time continuous experiments, reduces experiment interruption times, and improves data integrity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of microscope cold and hot stage, in particular to a polarized microscope cold and hot stage with a window anti-fouling structure for long-time testing of the melting and solidification process of a cast carrier. BACKGROUND

[0002] In the experimental research of a polarized microscope, a cold and hot stage is a key accessory for controlling the temperature of a sample and cooperating with observation, and is widely used in the fields of material science, geology, biology and the like. The polarized microscope cold and hot stage with a window anti-fouling structure is a special temperature control device integrated with a window anti-fouling design, which can be installed on a polarized microscope, used to reduce window pollution through specific structures or technical means while precisely regulating the temperature of a sample, and ensure the clarity and stability of polarized observation.

[0003] Due to the fact that an energetic material such as a cast explosive, in the process of testing the crystalline morphology of the polarized microscope, as the temperature rises, the saturated vapor pressure of the molten explosive increases sharply, when it exceeds the ambient pressure, it will escape from the surface of the molten explosive into the gas phase, and long-time observation provides a sustained duration for the evaporation process, and this evaporation is usually selective, on the one hand, it will cause the segregation of the chemical composition of the melt, the loss of quality, and the decrease of the test accuracy, on the other hand, it will condense and precipitate in the visible window, and the observation will be unclear, which greatly reduces the observation time and experimental efficiency.

[0004] Therefore, the present application provides a polarized microscope cold and hot stage with a window anti-fouling structure. SUMMARY

[0005] (I) Technical problems solved

[0006] The problem solved by the present application is to provide a polarized microscope cold and hot stage with a window anti-fouling structure, which has high practicability, solves the problem that the window mirror is easily polluted by sample volatiles, condensed water, environmental dust and the like, and needs to be disassembled and assembled with the aid of special tools, and the operation steps are complicated and time-consuming.

[0007] (II) Technical solutions

[0008] To achieve the above object, the present application is realized by the following technical solutions: a polarized microscope cold and hot stage with a window anti-fouling structure, comprising a cold and hot stage, an upper cover is arranged on the top of the cold and hot stage, a connecting assembly is arranged between the cold and hot stage and the upper cover, a window mirror is installed at the center of the upper cover, an installation slot is opened at the bottom of the upper cover, and an anti-fouling assembly is arranged in the installation slot;

[0009] The temperature control range of the cooling and heating platform is -40℃ to 250℃, the temperature rising rate can be adjusted in the range of 1℃ / min-15℃ / min, the temperature falling rate can be adjusted in the range of 0.1℃ / min-10℃ / min, and the temperature control accuracy is ±0.1℃;

[0010] The cooling and heating platform has a continuous heat preservation time of not less than 6 hours in the range of -20℃ to 150℃, and a continuous heat preservation time of not less than 3 hours in the range of 150℃ to 250℃, and the temperature fluctuation during the heat preservation process is not more than ±0.5℃;

[0011] The anti-fouling assembly comprises a mounting frame slidingly connected to the inner side wall of the mounting groove, a cross rod fixedly connected to the center of the mounting frame, a wiping block mounted on the top of the cross rod, the top of the wiping block being in contact with the bottom of the window mirror, two motors mounted on the inner top wall of the mounting groove, a transmission rod spline-connected to the output end of the motor, a rotating disc fixedly connected to one end of the transmission rod, a connecting rod mounted on the bottom of the rotating disc, a waist-shaped hole being formed on the top of the mounting frame on both sides, and two connecting rods being slidingly connected to the inner side wall of the waist-shaped hole.

[0012] The connecting assembly comprises two connecting blocks and two fixed blocks fixedly connected to the upper cover and the two sides of the cooling and heating platform respectively, a rectangular block fixedly connected to the top of the fixed block, a rectangular groove formed in the bottom of the connecting block and matched with the rectangular block, a cavity formed in the connecting block, a sliding block slidingly connected to the inner side wall of the cavity, a spring connected between one end of the sliding block and the inner side wall of the cavity, and a plug rod fixedly connected to the other end of the sliding block.

[0013] Optionally, one side of the sliding block is fixedly connected with a fixed rod, one end of the fixed rod is fixedly connected with a lever, the lever is connected with the sliding block through the fixed rod, the lever provides a manual operation fulcrum for the movement of the sliding block, the sliding block can directly compress the spring to make the plug rod disengage from the plug hole of the rectangular block, and the upper cover can be quickly disassembled.

[0014] Optionally, the bottom of the upper cover is fixedly connected with a plurality of positioning blocks, and the top of the cooling and heating platform is provided with positioning grooves matched with the positioning blocks, the positioning blocks are embedded into the positioning grooves on the top of the cooling and heating platform when the upper cover is installed, and the relative positions of the upper cover and the cooling and heating platform are accurately positioned.

[0015] Optionally, a groove is formed in the bottom of the upper cover, a sealing ring is arranged on the inner side wall of the groove, the sealing ring is made of rubber material, the sealing ring is located between the contact surface of the upper cover and the cooling and heating platform, the sealing ring fills the gap between the upper cover and the cooling and heating platform through compression deformation, a sealing barrier is formed, and external dust and water vapor are prevented from entering the inside of the cooling and heating platform.

[0016] Optionally, the two sides of the mounting frame are fixedly connected with limiting blocks, the inner side wall of the mounting groove is provided with limiting grooves matched with the limiting blocks, and the limiting blocks are slidably connected to the inner side wall of the limiting grooves.

[0017] Optionally, the surface of the connecting rod is provided with a blocking ring, the top of the blocking ring is in contact with the bottom of the mounting frame, the blocking ring is sleeved on the surface of the connecting rod, the top of the blocking ring is in contact with the bottom of the mounting frame, and the up-down displacement of the connecting rod relative to the mounting frame is limited.

[0018] Optionally, the wiping block adopts a composite structure: the surface layer is superfine fiber cloth, the bottom layer is elastic sponge, and the wiping block is detachably connected with the horizontal rod through a magic tape; the length of the wiping block is 1.2-1.5:1 of the diameter of the window mirror, and full coverage wiping is realized.

[0019] Optionally, the motor is a stepping motor, the rotating disc is rigidly connected with the transmission rod, the eccentric distance of the rotating disc is 10-15 mm, the connecting rod is connected with the rotating disc through bearing hinging, and the reciprocating stroke of the mounting frame is 20-30 mm.

[0020] Optionally, the sealing ring is made of fluororubber, the cross section of the sealing ring is U-shaped, the interference fit amount between the sealing ring and the groove is 0.5-1 mm, and the contact pressure of the compressed sealing ring is greater than or equal to 0.2 MPa.

[0021] Optionally, the positioning block is made of polytetrafluoroethylene, the height of the positioning block is 5-8 mm, the fitting gap between the positioning block and the positioning groove is 0.05-0.1 mm, the positioning accuracy is less than or equal to 0.1 mm, the coaxiality error between the window mirror and the cold and hot table is less than or equal to 0.2 mm, the diameter of the temperature control area of the cold and hot table corresponding to the window mirror is 20-40 mm, and the temperature uniformity in the temperature control area is less than or equal to ±0.4 DEG C, so that the temperature consistency of the sample observation area is ensured.

[0022] (Three) beneficial effects

[0023] The application provides a polarized microscope cold and hot table with a window anti-fouling structure.

[0024] 1. The polarized microscope cold and hot table with the window anti-fouling structure drives the wiping block to automatically reciprocate and wipe the bottom of the window mirror through a motor, manual cleaning is not needed, sample volatiles, condensed water or dust and other pollutants on the window mirror can be removed in real time, stains are prevented from blocking the light path and affecting the polarized observation precision, the polarized microscope cold and hot table is especially suitable for long-time continuous experiments, the number of experiment interruptions is reduced, and the data integrity is improved.

[0025] 2、The polarized microscope cold and hot stage with window anti-fouling structure, the quick fixing of the upper cover and the cold and hot stage is realized through the clamping of the spring driving insertion rod and the rectangular block, when disassembling, only need to rotate the rotating rod to release the locking, without the aid of tools, greatly improve the disassembly efficiency of the upper cover, convenient for replacing the sample in the cold and hot stage or maintaining the anti-fouling assembly and the window mirror. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 It is the overall structure schematic diagram of the application;

[0027] Fig. 2 It is the upper cover structure schematic diagram of the application;

[0028] Fig. 3 It is the window mirror structure schematic diagram of the application;

[0029] Fig. 4 It is the connecting block cross-section structure schematic diagram of the application.

[0030] In the drawing: 1, cold and hot stage; 101, upper cover; 102, window mirror; 2, anti-fouling assembly; 201, mounting frame; 202, horizontal rod; 203, wiping block; 204, motor; 205, rotating disc; 206, connecting rod; 3, connecting assembly; 301, connecting block; 302, fixed block; 303, rectangular block; 304, sliding block; 305, spring; 306, insertion rod; 4, fixed rod; 5, rotating rod; 6, positioning block; 7, sealing ring; 8, limiting block; 9, blocking ring. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0032] Please refer to Figs. 1 to 4 The application provides a technical solution: a polarized microscope cold and hot stage with window anti-fouling structure, comprising a cold and hot stage 1, the top of the cold and hot stage 1 is provided with an upper cover 101, a connecting assembly 3 is arranged between the cold and hot stage 1 and the upper cover 101, a window mirror 102 is installed at the center of the upper cover 101, a mounting groove is formed in the bottom of the upper cover 101, and an anti-fouling assembly 2 is arranged in the mounting groove; the temperature control range of the cold and hot stage 1 is-40℃ to 250℃, the temperature rising rate can be adjusted in the range of 1℃ / min-15℃ / min, the temperature falling rate can be adjusted in the range of 0.1℃ / min-10℃ / min, the temperature control accuracy is ±0.1℃; the cold and hot stage 1 is in the interval of-20℃ to 150℃, the continuous heat preservation time is not less than 6 hours; in the interval of 150℃ to 250℃, the continuous heat preservation time is not less than 3 hours, and the temperature fluctuation during the heat preservation process is not more than ±0.5℃;

[0033] The anti-fouling assembly 2 comprises a mounting frame 201 slidably connected to the inner side wall of the mounting groove, a crossbar 202 fixedly connected at the center of the mounting frame 201, and a wiping block 203 mounted on the top of the crossbar 202. The wiping block 203 is usually made of soft cleaning material and is in contact with the bottom of the window mirror 102. The wiping block 203 can wipe off the dirt on the surface of the window mirror 102 through reciprocating motion, ensuring the clear observation light path. The top of the wiping block 203 is in contact with the bottom of the window mirror 102. Two motors 204 are mounted on the inner top wall of the mounting groove. The output end of the motor 204 is spline-connected with a transmission rod. One end of the transmission rod is fixedly connected with a rotating disc 205. The rotating disc 205 rotates with the transmission rod. The circular motion is converted into linear reciprocating motion of the mounting frame 201 through the connecting rod 206 at the bottom, which is a key component for motion form conversion. The bottom of the rotating disc 205 is mounted with the connecting rod 206. Two waist-shaped holes are formed on the top of the mounting frame 201. The waist-shaped holes provide sliding space for the connecting rod 206, limit the movement track of the connecting rod 206, and ensure that the mounting frame 201 makes stable linear reciprocating motion instead of rotating with the rotating disc 205. The two connecting rods 206 are slidably connected to the inner side walls of the two waist-shaped holes, respectively. The motor 204 is selected as a 28BYJ-48 stepper motor 204.

[0034] The connecting assembly 3 comprises two connecting blocks 301 and two fixed blocks 302 fixedly connected to the two sides of the upper cover 101 and the cold and hot table 1, respectively. The top of the fixed block 302 is fixedly connected with a rectangular block 303. The rectangular block 303 is fixed to the top of the fixed block 302 and is inserted into the rectangular groove of the connecting block 301. The shape matching realizes the preliminary positioning of the upper cover 101 and the cold and hot table 1, limiting the horizontal relative displacement of the two. The bottom of the connecting block 301 is provided with a rectangular groove matched with the rectangular block 303. The inside of the connecting block 301 is provided with a cavity. The inner side wall of the cavity is slidably connected with a sliding block 304. One end of the sliding block 304 and the inner side wall of the cavity are jointly connected with a spring 305. The spring 305 connects the sliding block 304 and the inner wall of the cavity and pushes the sliding block 304 through its own elastic force, so that the insertion rod 306 remains inserted into the insertion hole, ensuring the stable connection of the upper cover 101 and the cold and hot table 1. When disassembled, the spring 305 can be compressed to provide space for the insertion rod 306 to exit. The other end of the sliding block 304 is fixedly connected with an insertion rod 306. One side of the rectangular block 303 is provided with an insertion hole matched with the insertion rod 306. The insertion hole is matched with the insertion rod 306 in shape. The mechanical locking of the rectangular block 303 and the connecting block 301 is realized by inserting the insertion rod 306, preventing the upper cover 101 from loosening.

[0035] One side of the sliding block 304 is fixedly connected with a fixed rod 4, one end of the fixed rod 4 is fixedly connected with a push rod 5, the push rod 5 is connected with the sliding block 304 through the fixed rod 4, manual operation fulcrum for the movement of the sliding block 304 is provided, the sliding block 304 can be directly driven to compress the spring 305, the plug rod 306 is separated from the insertion hole of the rectangular block 303, and the upper cover 101 is quickly disassembled.

[0036] A plurality of positioning blocks 6 are fixedly connected to the bottom of the upper cover 101, and a positioning groove matched with the positioning blocks 6 is formed in the top of the cold and hot table 1, when the upper cover 101 is installed, the positioning blocks 6 are embedded into the positioning groove in the top of the cold and hot table 1, and the relative position of the upper cover 101 and the cold and hot table 1 is accurately positioned.

[0037] A recess is formed in the bottom of the upper cover 101, a sealing ring 7 is arranged on the inner side wall of the recess, the sealing ring 7 is made of rubber material, the sealing ring 7 is located between the contact surface of the upper cover 101 and the cold and hot table 1, and the gap between the two is filled by compression deformation, so that a sealing barrier is formed, and external dust and water vapor are prevented from entering the inside of the cold and hot table 1.

[0038] Limiting blocks 8 are fixedly connected to the two sides of the mounting frame 201, limiting grooves matched with the limiting blocks 8 are formed in the inner side walls of the mounting grooves, the limiting blocks 8 are slidably connected to the inner side walls of the limiting grooves, and when the mounting frame 201 slides, the limiting blocks 8 move synchronously along the limiting grooves, so that the movement track of the mounting frame 201 is limited, and deviation or shaking of the mounting frame 201 in the sliding process is prevented.

[0039] A stop ring 9 is sleeved on the surface of the connecting rod 206, the top of the stop ring 9 is in contact with the bottom of the mounting frame 201, the stop ring 9 is sleeved on the surface of the connecting rod 206, and the top of the stop ring 9 is in contact with the bottom of the mounting frame 201, so that the upward and downward displacement of the connecting rod 206 relative to the mounting frame 201 is limited.

[0040] In the application, the wiping block 203 adopts a composite structure: the surface layer is superfine fiber cloth (thickness 1-2mm, fiber diameter ≤0.5μm), the bottom layer is elastic sponge (Shore hardness 30-40A, compression amount 20%-30%), and the wiping block 203 is detachably connected with the horizontal rod 202 through a magic tape, the length of the wiping block 203 and the diameter ratio of the window mirror 102 is 1.2-1.5:1, and full coverage wiping is ensured.

[0041] The motor 204 is a stepping motor (step angle 1.8°, rated speed 100-300r / min), is rigidly connected with the rotating disc 205 through a transmission rod, the eccentric distance of the rotating disc 205 is 10-15mm, the connecting rod 206 is hingedly connected with the rotating disc 205 through a bearing (rotating clearance ≤0.1mm), and the reciprocating stroke of the mounting frame 201 is 20-30mm.

[0042] The sealing ring 7 is made of fluororubber (temperature resistance range: -20 DEG C to 200 DEG C), the cross section is U-shaped (the opening is directed to the cold and hot table 1, the wall thickness is 2-3 mm), the interference fit with the groove is 0.5-1 mm, and the sealing contact pressure after compression is greater than or equal to 0.2 MPa.

[0043] The positioning block 6 is made of polytetrafluoroethylene (3-4 in number, uniformly distributed in a ring shape), the height of the positioning block 6 is 5-8 mm, the fitting gap with the positioning groove is 0.05-0.1 mm, the positioning accuracy is less than or equal to 0.1 mm, the coaxiality error of the window mirror 102 and the cold and hot table 1 is less than or equal to 0.2 mm, the diameter of the temperature control area of the window mirror on the cold and hot table is 20 mm-40 mm, and the temperature uniformity in the temperature control area is less than or equal to ±0.4 DEG C, so as to ensure the temperature consistency of the sample observation area.

[0044] In the present application, the working steps of the device are as follows:

[0045] The first step: after the motor 204 is started, the output end drives the transmission rod to rotate, the transmission rod drives the rotating disc 205 to rotate, and the connecting rod 206 at the bottom of the rotating disc 205 rotates with the rotating disc 205; since the connecting rod 206 is slidingly connected in the waist-shaped hole at the top of the mounting frame 201, when the rotating disc 205 rotates, the connecting rod 206 will slide in the waist-shaped hole and push the mounting frame 201 to do linear reciprocating motion in the mounting groove; the cross rod 202 at the center of the mounting frame 201 will move accordingly, so that the wiping block 203 fixedly connected with the cross rod 202 wipes back and forth at the bottom of the window mirror 102, removes the stains on the surface of the window mirror 102, keeps the window mirror 102 clean, and ensures the observation effect of the polarizing microscope.

[0046] The second step: when the upper cover 101 is installed, the positioning block 6 of the upper cover 101 is aligned with the positioning groove of the cold and hot table 1 and then is placed down; at this time, the rectangular block 303 on the fixed block 302 is inserted into the rectangular groove at the bottom of the connecting block 301, the sliding block 304 is driven by the elastic force of the spring 305 to drive the insertion rod 306 to be inserted into the insertion hole of the rectangular block 303, so that the upper cover 101 and the cold and hot table 1 are firmly connected together; when disassembled, the insertion rod 306 is withdrawn from the insertion hole of the rectangular block 303 by pressing the lever 5 through the fixed rod 4 to compress the spring 305, so that the upper cover 101 can be removed.

[0047] It should be noted that the device structure and the drawings of the present application mainly describe the principle of the present application, and the setting of the power mechanism, the power supply system and the control system of the device is not completely described in the technical principle of the design principle, and the specific of the power mechanism, the power supply system and the control system can be clearly known by the technical personnel in the art under the premise of understanding the principle of the above application; the control mode of the application file is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of the technical personnel in the art;

[0048] The standard parts used in the application can be purchased from the market, and can be ordered according to the description and the drawings. The specific connection of each part is achieved by using conventional means such as bolts, rivets, and welding in the prior art. The mechanical parts and equipment are conventional types known to those skilled in the art, and the structure and principle of the components known to those skilled in the art can be known through technical manuals or conventional experimental methods.

[0049] It can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A polarized microscope hot and cold stage with a window anti-fouling structure, comprising a hot and cold stage (1), characterized in that: The cold and hot table (1) is provided with an upper cover (101) on the top, a connecting assembly (3) is arranged between the cold and hot table (1) and the upper cover (101), a window mirror (102) is installed at the center of the upper cover (101), and a mounting groove is formed in the bottom of the upper cover (101). The temperature control range of the cold and hot table (1) is -40℃ to 250℃, the temperature rising rate can be adjusted in the range of 1℃ / min-15℃ / min, the temperature falling rate can be adjusted in the range of 0.1℃ / min-10℃ / min, and the temperature control accuracy is ±0.1℃. The cold and hot table (1) has a continuous heat preservation time of not less than 6 hours in the range of -20℃ to 150℃, and a continuous heat preservation time of not less than 3 hours in the range of 150℃ to 250℃, and the temperature fluctuation during the heat preservation process is not more than ±0.5℃. The anti-fouling assembly (2) comprises a mounting frame (201) slidably connected to the inner side wall of the mounting groove, a cross rod (202) fixedly connected at the center of the mounting frame (201), a wiping block (203) installed on the top of the cross rod (202), the top of the wiping block (203) in contact with the bottom of the window mirror (102), two motors (204) installed on the inner top wall of the mounting groove, a transmission rod spline-connected to the output end of the motor (204), a rotating disc (205) fixedly connected to one end of the transmission rod, a connecting rod (206) installed on the bottom of the rotating disc (205), and two connecting rods (206) slidably connected to the inner side walls of two waist-shaped holes on both sides of the top of the mounting frame (201). The connecting assembly (3) comprises two connecting blocks (301) and two fixed blocks (302) fixedly connected to the two sides of the upper cover (101) and the cold and hot table (1) respectively, a rectangular block (303) fixedly connected to the top of the fixed block (302), a rectangular groove matched with the rectangular block (303) formed in the bottom of the connecting block (301), a cavity formed in the inside of the connecting block (301), a sliding block (304) slidably connected to the inner side wall of the cavity, a spring (305) connected between one end of the sliding block (304) and the inner side wall of the cavity, and a plug rod (306) fixedly connected to the other end of the sliding block (304).

2. The polarized microscope hot and cold stage with anti-fouling window according to claim 1, characterized in that: One side of the sliding block (304) is fixedly connected with a fixed rod (4), and one end of the fixed rod (4) is fixedly connected with a lever (5).

3. The polarized microscope hot and cold stage with anti-fouling window according to claim 1, characterized in that: The bottom of the upper cover (101) is fixedly connected with a plurality of positioning blocks (6), and the top of the cold and hot table (1) is provided with positioning grooves matched with the positioning blocks (6).

4. The polarized microscope hot and cold stage with anti-fouling window according to claim 1, characterized in that: A recess is formed in the bottom of the upper cover (101), and a sealing ring (7) is arranged on the inner side wall of the recess. The material of the sealing ring (7) is rubber.

5. The polarized microscope hot and cold stage with anti-fouling window according to claim 1, characterized in that: Both sides of the mounting frame (201) are fixedly connected with limiting blocks (8), the inner side wall of the mounting groove is provided with limiting grooves matched with the limiting blocks (8), and the limiting blocks (8) are slidingly connected to the inner side wall of the limiting grooves.

6. The polarized microscope hot and cold stage with anti-fouling window according to claim 1, characterized in that: The surface of the connecting rod (206) is sleeved with a stop ring (9), and the top of the stop ring (9) is in contact with the bottom of the mounting frame (201).

7. The polarized microscope hot and cold stage with anti-fouling window according to claim 1, characterized in that, The wiping block (203) adopts a composite structure: the surface layer is superfine fiber cloth, the bottom layer is elastic sponge, and the wiping block (203) is detachably connected with the horizontal rod (202) through a magic tape, the length of the wiping block (203) and the diameter of the window mirror (102) are in a ratio of 1.2-1.5:1, and full coverage wiping is realized.

8. The polarized microscope hot and cold stage with anti-fouling window according to claim 1, characterized in that, The motor (204) is a stepping motor, which is rigidly connected with the rotating disc (205) through a transmission rod, the eccentricity of the rotating disc (205) is 10-15mm, the connecting rod (206) is hingedly connected with the rotating disc (205) through a bearing, and the reciprocating stroke of the mounting frame (201) is 20-30mm.

9. The polarized microscope hot and cold stage with an antifouling window according to claim 4, characterized in that, The sealing ring (7) is made of fluorine rubber, the cross section is U-shaped, the interference fit amount with the groove is 0.5-1mm, and the sealing contact pressure after compression is greater than or equal to 0.2MPa.

10. The polarized microscope hot and cold stage with an antifouling window according to claim 3, characterized in that, The positioning block (6) is made of polytetrafluoroethylene, the height of the positioning block (6) is 5-8mm, the fitting gap with the positioning groove is 0.05-0.1mm, the positioning accuracy is less than or equal to 0.1mm, the coaxiality error of the window mirror (102) and the cold and hot table (1) is less than or equal to 0.2mm, the temperature control area diameter of the window mirror (102) corresponding cold and hot table (1) is 20-40mm, and the temperature uniformity in the temperature control area is less than or equal to ±0.4℃, so as to ensure the temperature consistency of the sample observation area.

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