A focusing mechanism for an optical microscope and its focusing method

Abstract

The present invention discloses a focusing mechanism for an optical microscope and a focusing method thereof, belonging to the technical field of optical microscopes. Aiming mainly at the problem that the existing products cannot efficiently focus on the replaced object to be measured, the following technical solutions are proposed, including a microscope main body composed of a mirror base, a mirror arm, a stage, a light shutter, a reflector and an observation component. Through the combination of an identification module, a control module and a driving module, the present invention realizes the overall automatic adjustment of the observation component, thereby improving the efficiency of the product during rough focusing. Then, in cooperation with the existing focusing structure, it realizes the manual and convenient focusing of the product lens, and further ensures the focusing effect while improving the focusing efficiency. Combined with a placement component, different types of samples can be loaded, and the object to be measured can be efficiently switched in the way of station switching. Multiple samples of the same type can be moved and transposed, so that the product can perform rapid and precise focusing when the object to be measured is replaced.

Description

Technical Field

[0001] The present invention relates to the technical field of optical microscopes, and specifically to a focusing mechanism for an optical microscope and a focusing method therefor. Background Art

[0002] An optical microscope is a microscope that uses optical principles to magnify tiny objects that cannot be distinguished by the naked eye into images for people to extract microstructural information. During the use of the microscope, operators need to repeatedly perform the same programmed operations, including focusing the microscope. Generally, it is through manual observation of the eyepiece. First, the distance between the microscope barrel and the stage is roughly adjusted. When it is adjusted to be roughly clear, then the fine adjustment knob is used for fine adjustment to make the image of the observed object the clearest. However, in such a focusing process, repeated operations for a long time are complex, boring, and easily cause fatigue, and it is also easy to cause human errors in the observed results.

[0003] There is a Chinese patent with the application number 202210436046.2, which discloses a microscope with a high-precision autofocus mechanism, including a base. A stage and a lens are installed on the base. A column is provided at the rear end of the base, and a rotation drive is fixedly installed at the front end of the top of the column. The rotation drive is drivingly connected to a rotation axis perpendicular to the ground.

[0004] The technical solution in the above patent document realizes the automatic focusing of the lens and the coordinated movement of the sample in an electric manner. However, in the actual application process, there is still a risk of error in the electric autofocus, and it is impossible to conveniently and accurately adjust the lens after focusing; when observing the sample, the product can only perform single observation of the sample. When observing general items, at least two observation samples of the same kind need to be prepared. Therefore, when observing multiple samples of the same kind, the feeding and discharging operations need to be performed in sequence, and then the lifting and moving mechanism is driven to realize the focusing operation on the subsequently placed samples. Among them, the feeding and discharging of the samples and the operation time of subsequent focusing affect the observation efficiency of the samples. Summary of the Invention

[0005] To overcome the above-mentioned defects of the prior art, the present invention provides a focusing mechanism and a focusing method for an optical microscope. Through the combination of an identification module, a control module and a driving module, the overall automatic adjustment of the observation component is realized, so as to improve the efficiency of the product during rough focusing. Then, in combination with the existing focusing structure, the manual convenient focusing of the product lens is realized, so as to effectively combine the automatic and manual operations. While improving the focusing efficiency, the focusing effect is guaranteed. Combined with the setting of the object placing component, different types of samples can be loaded, and the efficient switching of the object to be measured is realized in the way of station switching. Multiple samples of the same type can be moved and transposed, so that the product can perform rapid and precise focusing when the object to be measured is replaced, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] Technical solution of the first aspect: A focusing mechanism for an optical microscope, including a microscope main body composed of a mirror base, a mirror arm, a stage, a diaphragm, a reflector and an observation component. Among them, the observation component is composed of a focusing structure and an observation piece. A driving module for driving the observation component to move up and down, an identification module for identifying the sample to be measured, a control module for central control processing and a battery main body for providing power are arranged on the mirror arm. Among them, the driving module is composed of a first motor, a reducer main body and a lead screw. The first motor and the lead screw are respectively assembled at the input end and the output end of the reducer main body, and the focusing structure is threadedly connected to the lead screw;

[0008] An object placing component for loading the object to be measured is installed on the stage. The object placing component is composed of a driving mechanism, a station plate and an object placing mechanism. Among them, the driving mechanism is loaded on the stage, the station plate is arranged on the driving mechanism, and there are multiple object placing mechanisms, which are arranged on the station plate along the circumferential direction;

[0009] The object placing mechanism includes a base member arranged on the station plate. A U-shaped plate is movably connected to the side wall of the base member. A first side plate and a second side plate are slidably connected to the inner walls of both sides of the U-shaped plate. A rack is arranged on each of the first side plate and the second side plate. A gear meshing and driving with the two racks symmetrically arranged up and down is arranged between the two racks. The multiple gears are connected in series through an adjusting shaft. A clamping component is arranged on each of the first side plate and the second side plate.

[0010] As a further solution of the present invention, a fixing seat is integrally provided on the top shell wall of the lens holder. The lens arm is installed on the fixing seat through a pin shaft. The stage is composed of a bracket and a carrier plate. Among them, the carrier plate is fixedly connected to the top end of the bracket, and the bracket is fixedly connected to the bottom side wall of the lens arm through bolts. A light passing hole is provided on the carrier plate, and the shutter is rotatably connected to the bottom shell wall of the carrier plate. Among them, the holes on the shutter coincide with the light passing hole. The reflector is installed on the bracket, and the reflector is used to reflect light through the light passing hole.

[0011] As a further solution of the present invention, a groove and a guide groove are provided on the top side wall of the lens arm. Among them, there are two guide grooves, which are respectively located on the front and rear sides of the groove. A guide bar is slidably connected in each guide groove, and the sides of the plurality of guide bars away from the lens arm are fixedly connected to the focusing structure together;

[0012] The observation member is composed of a turret, a lens barrel, an eyepiece and an objective lens. Among them, the lens barrel is provided on the top of the turret. There are multiple objective lenses, which are respectively arranged on the bottom of the turret along the circumferential direction. The eyepiece is inserted into the top end of the lens barrel. The eyepiece, the objective lens and the light passing hole are on the same axis line. The observation member is movably connected to the focusing structure.

[0013] As a further solution of the present invention, the first motor and the main body of the reducer are both provided on the top outer wall of the lens arm. The bottom end of the lead screw penetrates the top shell wall of the groove and is rotatably connected to the bottom inner wall of the groove through a bearing. And a female thread seat is threadedly connected to the lead screw. The side wall of the female thread seat is installed on the focusing structure through a screw. A notch located on the lens arm is provided on the left side of the main body of the reducer. The main body of the storage battery is assembled in the notch for providing power. The identification module is installed on the right side shell wall of the lens arm, and the control module is provided on the front side shell wall of the lens arm.

[0014] As a further solution of the present invention, the driving mechanism includes a support frame fixedly connected to the carrier plate through bolts. A second motor is installed on the top shell wall of the support frame. A worm is provided at the output end of the second motor. A worm gear meshing with the worm is provided on the side of the worm. A rotating shaft is installed on the worm gear. The bottom end of the rotating shaft is rotatably connected to the top shell wall of the support frame through a bearing. The workbench is fixedly connected to the top end of the rotating shaft. An annular groove is provided on the bottom shell wall of the workbench. The end of the worm away from the second motor is rotatably connected to a support plate through a bearing. The bottom end of the support plate is fixedly connected to the support frame;

[0015] A plurality of cutouts are provided on the workbench along the circumferential direction for serving as different workstations, and the plurality of placement mechanisms correspond to the plurality of cutouts one by one.

[0016] As a further solution of the present invention, the base member includes an L-shaped plate fixedly connected to the top shell wall of the working station plate by screws. A slide rail is integrally provided on the side wall of the L-shaped plate, and reset members are installed on both the upper and lower sides of the slide rail and are located on the side wall of the L-shaped plate.

[0017] The reset member is composed of an end plate, a guide rod, a reset spring and a carrier seat. Among them, there are two end plates, which are respectively arranged at both ends of the guide rod and fixedly connected to the side wall of the L-shaped plate. The carrier seat and the reset spring are sleeved on the guide rod. Among them, there are two reset springs, which are respectively located on both sides of the carrier seat. The carrier seat and the U-shaped plate are fixedly connected by bolts, and the U-shaped plate is slidably connected to the slide rail.

[0018] As a further solution of the present invention, two slide bars are integrally provided on the inner side walls of both sides of the U-shaped plate. The first side plate is slidably connected to the upper slide bar, and the second side plate is slidably connected to the lower slide bar. A convex strip is integrally provided on the side wall of each of the first side plate and the second side plate, and a plurality of racks are respectively fixedly connected to the corresponding convex strips. Both ends of the adjusting shaft respectively penetrate through the corresponding side walls of the U-shaped plate, and adjusting handles are installed.

[0019] As a further solution of the present invention, a first convex platform and a second convex platform are integrally provided on the inner walls of each of the first side plate and the second side plate. The gap between the first convex platform and the second convex platform is used to accommodate the sample to be tested.

[0020] The clamping assembly includes a press plate clip provided on the first convex platform. The press plate clip is composed of a positioning rod and a press glass slide. Among them, the positioning rod is threadedly connected to the top shell wall of the first convex platform, and the press glass slide is sleeved on the positioning rod.

[0021] As a further solution of the present invention, the clamping assembly is composed of a pressing member and an auxiliary member. Among them, the pressing member includes a first through hole opened on the upper first convex platform and a second through hole opened on the lower first convex platform. A first movable rod is movably connected in the first through hole. A first press plate for pressing and clamping the sample is sleeved on the first movable rod. An arc-shaped groove is provided on the peripheral wall of the first movable rod. A first convex rod is slidably connected in the arc-shaped groove. One end of the first convex rod away from the arc-shaped groove is fixedly connected to an ear plate. The bottom end of the ear plate is fixedly connected to the first convex platform.

[0022] A second movable rod is movably connected in the second through hole. A second press plate for pressing and clamping the sample is sleeved on the second movable rod. And the bottom end of the second movable rod penetrates through the corresponding second side plate and is connected with a ball in a rolling manner. An arc-shaped groove is provided on the peripheral wall of the second movable rod. A second convex rod is slidably connected in the arc-shaped groove. One end of the second convex rod away from the arc-shaped groove is fixedly connected to an ear plate. The top end of the ear plate is fixedly connected to the bottom shell wall of the second side plate.

[0023] The top of the movable rod 1 is movably connected with a special-shaped plate, and the other end of the special-shaped plate corresponds to the movable rod 2 below. A round hole is opened on the special-shaped plate, and a round rod is arranged in the round hole. The bottom end of the round rod is fixedly connected to the corresponding side plate 1, and an extrusion spring located on the round rod is sleeved between the side plate 1 and the special-shaped plate;

[0024] The auxiliary part includes a bracket fixedly connected to the bottom shell wall of the support frame by bolts, and an arc-shaped platform is fixedly connected to the top of the bracket. Inclined surfaces are provided on both sides of the arc-shaped platform to facilitate the movable contact of the ball, wherein the arc-shaped platform is located directly below the annular groove.

[0025] The technical solution of the second aspect: a focusing method for a focusing mechanism of an optical microscope, the method comprising the following steps:

[0026] Step 1: Align the microscope body: Take out the microscope body and place it on the table. Then assemble the eyepiece and objective lens on the observation unit and align the low-power lens with the light hole.

[0027] Adjust the shutter so that the larger hole on it is aligned with the light hole. Look into the eyepiece with one eye and open the other eye. Adjust the reflector so that the light is reflected into the lens barrel through the light hole. A bright white circular field of view can be seen through the eyepiece to complete the light calibration.

[0028] Step 2, sample preparation: first prepare samples of various types of items to be tested, and prepare two samples of the same type of items to be tested. After the samples are prepared, an identification code is attached to them, and then the identification code information is recorded in the control module;

[0029] Step 3: Sample loading: consists of manual loading and automatic loading;

[0030] Manual loading: The driving mechanism in the storage component is turned on by the control module, so that the workstation disk is rotated and replaced, so as to realize the switching of multiple storage mechanisms thereon. Each time the storage mechanism is switched, it is paused, so that the staff can place two samples of the same type to be tested on the side plate 1 and the side plate 2 on the same storage mechanism. After the sample is placed, the pressing glass slide of the pressing clamp in the clamping assembly on it is manually adjusted to complete the loading of the sample, and then the control module is used to turn on the driving mechanism, and the cycle is repeated to complete the manual loading of different types of samples on the corresponding storage mechanism;

[0031] Automatic loading: The control module activates the drive mechanism in the storage component to rotate and displace the workbench, enabling the switching of multiple storage mechanisms thereon. Each time the storage mechanism completes the switching, it pauses. When the storage mechanism reaches the position of the auxiliary part, each pressing piece on the corresponding storage mechanism automatically opens, facilitating the staff to place the same type of samples to be tested on the first side plate and the second side plate thereon;

[0032] After the samples are placed, the control module activates the drive mechanism again to achieve the transposition between the storage mechanisms on the workbench. After the storage mechanism corresponding to the auxiliary part transposes and leaves, under the action of the compression spring, a reset movement is achieved, thereby realizing the clamping and limiting of the corresponding samples by each pressing piece one and pressing piece two. This process is repeated to complete the automatic loading of different types of samples on the corresponding storage mechanisms;

[0033] Step Four: Sample focusing: It consists of automatic focusing and manual focusing;

[0034] Automatic focusing: The recognition module recognizes the identification code of the sample on the storage mechanism and transmits the recognition information to the control module. The control module activates the motor one in the drive module according to the recognition information. The operation of the motor one drives the lead screw to move slowly under the reduction effect of the reducer main body, thereby realizing the slow lifting and lowering adjustment of the observation component;

[0035] Manual focusing: After automatic focusing is completed, the user manually adjusts the focusing structure to achieve a clear observation of the sample by the observation piece;

[0036] Step Five: Sample adjustment: After the sample is focused, during the observation process, the U-shaped plate in the corresponding storage mechanism can be horizontally pushed and adjusted to achieve a comprehensive observation of the sample. When switching the same type of samples, by adjusting the adjustment shaft, the driving gear moves, and under the action of the rack, the first side plate and the second side plate are transposed to achieve the transposition of the samples loaded thereon;

[0037] Step Six: Simple focusing: After the transposition of the same type of samples is completed, slightly adjust the focusing structure again to complete the focusing of the sample, facilitating the convenient observation thereof;

[0038] Step Seven: Focusing for the switching of different types of samples; The control module activates the drive mechanism to complete the rotation of the workbench, driving the multiple storage mechanisms arranged thereon to transpose. After the storage mechanism completes the transposition, the recognition module recognizes the sample to be tested again, and then the drive module operates to achieve automatic focusing. After automatic focusing is completed, manual focusing is used to achieve a clear observation of the sample.

[0039] Compared with the prior art, the beneficial effects of the present invention are:

[0040] 1. Through the combination of the identification module, control module, and drive module, the overall automatic adjustment of the observation component is realized, thereby improving the efficiency of the product during rough focusing. Then, in cooperation with the existing focusing structure, the manual convenient focusing of the product lens is realized, so as to effectively combine automatic and manual operations, and ensure the focusing effect while improving the focusing efficiency.

[0041] 2. By attaching an identification code to the sample to be measured, and then inputting the sample substance information corresponding to the identification code into the control module, the control module realizes the rough adjustment of the drive module for the observation component according to the information identified by the identification module, thereby efficiently completing the rough adjustment of the observation component.

[0042] 3. Through the setting of the object placement component, different types of samples can be loaded, and then the workstations can be switched in a rotating and switching manner, so as to efficiently switch the object to be measured. In cooperation with the identification code and the identification module, the efficient focusing of the observation component can be quickly realized when the sample completes the workstation switching.

[0043] 4. Multiple samples of the same type loaded on the object placement mechanism can be moved and transposed, so as to quickly replace the objects to be measured of the same type. Then, by manually adjusting the existing focusing structure, the convenient focusing of the product during the observation of the object to be measured is realized, reducing the time required for replacing the object to be measured, and further improving the efficiency of the product focusing and observation.

[0044] 5. When the object placement component rotates and switches, it can cooperate with the auxiliary component to lift the clamping component used to clamp the sample in the object placement mechanism, thereby canceling the clamping of the sample by the clamping component, so as to facilitate the replacement of the sample at this workstation, and thus realize the convenient replacement of the observed sample during the process of observing other samples. Description of the Drawings

[0045] Figure 1 It is a schematic three-dimensional structure diagram of a focusing mechanism and its focusing method for an optical microscope;

[0046] Figure 2 It is a schematic bottom view structure diagram of Embodiment 1 of the present invention;

[0047] Figure 3 It is a schematic bottom view structure diagram of Embodiment 2 of the present invention;

[0048] Figure 4 It is a schematic side partial cross-sectional structure diagram of Embodiment 2 of the present invention;

[0049] Figure 5 For Figure 1 The enlarged schematic diagram of the partial structure at A of

[0050] Figure 6 For Figure 1 The upward view structure schematic diagram of the stage

[0051] Figure 7 For Figure 2 The structure schematic diagram of the object placing component

[0052] Figure 8 For Figure 3 The structure schematic diagram of the auxiliary part and the object placing mechanism

[0053] Figure 9 For Figure 8 The upward view structure schematic diagram

[0054] Figure 10 For Figure 8 The partial sectional view structure schematic of the object placing mechanism Figure 1 ;

[0055] Figure 11 For Figure 8 The partial sectional view structure schematic of the object placing mechanism Figure 2 ;

[0056] Figure 12 For Figure 1 The enlarged schematic diagram of the local structure at position B

[0057] Figure 13 For Figure 8 The enlarged schematic diagram of the local structure at position C

[0058] Figure 14 For Figure 9 The enlarged schematic diagram of the local structure at position D

[0059] Figure 15 It is a system diagram of a focusing mechanism and its focusing method for an optical microscope

[0060] In the figure: 1, base; 2, arm; 3, stage; 4, object placing component; 41, support frame; 42, motor 2; 43, worm; 44, worm gear; 45, workbench; 46, object placing mechanism; 461, base part; 4611, L-shaped plate; 4612, slide rail; 4613, reset part: 462, U-shaped plate; 463, side plate 1; 464, side plate 2; 465, rack; 466, gear; 467, clip; 468, pressing part; 4681, movable rod 1; 4682, pressing piece 1; 4683, movable rod 2; 4684, pressing piece 2; 4685, special-shaped plate; 4686, round rod; 5, shutter; 6, reflector; 7, motor 1; 8, reducer main body; 9, lead screw; 10, focusing structure; 11, observation piece; 12, battery main body; 13, recognition module; 14, control module; 15, auxiliary part; 151, bracket; 152, arc table Detailed implementation mode

[0061] Example 1: Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 15 In the embodiment of the present invention, a focusing mechanism for an optical microscope includes a microscope main body composed of a mirror base 1, a mirror arm 2, a stage 3, a shutter 5, a reflector 6 and an observation component. Among them, the observation component is composed of a focusing structure 10 and an observation piece 11. The focusing structure 10 adopts the existing manual coarse focusing structure and fine focusing structure to ensure the clarity of observation during the focusing operation.

[0062] A driving module for driving the observation component to move up and down, an identification module 13 for identifying the measured sample, a control module 14 for central control processing, and a battery main body 12 for providing power are arranged on the mirror arm 2. The battery main body 12 is used to supply power to the identification module 13, the driving module and the control module 14. The types of the identification module 13 are diverse, and in this embodiment, a scanner device in the prior art is adopted.

[0063] The driving module is composed of a first motor 7, a reducer main body 8 and a lead screw 9. The first motor 7 and the lead screw 9 are respectively assembled at the input end and the output end of the reducer main body 8. The focusing structure 10 is threadedly connected to the lead screw 9. The power generated by the operation of the first motor 7 drives the lead screw 9 to rotate slowly after being decelerated by the reducer main body 8, so as to ensure the accuracy of the lifting adjustment of the observation component.

[0064] Please refer to Figures 1-4 In the embodiment of the present invention, a placement component 4 for loading the measured object is installed on the stage 3. The placement component 4 is composed of a driving mechanism, a working position disk 45 and a placement mechanism 46. Among them, the driving mechanism is loaded on the stage 3, and the working position disk 45 is arranged on the driving mechanism. There are four placement mechanisms 46, which are arranged on the working position disk 45 along the circumferential direction. The driving mechanism drives the working position disk 45 to rotate, so as to drive the multiple placement mechanisms 46 assembled thereon to switch working positions.

[0065] Please refer to Figures 7-11 In the embodiment of the present invention, the placement mechanism 46 includes a base member 461 arranged on the working position disk 45, and a U-shaped plate 462 is movably connected to the side wall of the base member 461. The movable connection of the U-shaped plate 462 on the base member 461 enables the overall lateral pushing adjustment of the U-shaped plate 462 during the use of the product.

[0066] On both inner walls of the U-shaped plate 462, a first side plate 463 and a second side plate 464 are slidably connected. The front and rear symmetric first side plates 463 and the front and rear symmetric second side plates 464 respectively form a storage structure for placing similar samples.

[0067] On each of the first side plate 463 and the second side plate 464, a rack 465 is provided. Between the two vertically symmetric racks 465, a gear 466 meshing with them for transmission is provided. Multiple gears 466 are connected in series through an adjustment shaft. On each of the first side plate 463 and the second side plate 464, a clamping assembly is provided. Through the rotational movement of the adjustment shaft, multiple gears 466 are synchronously driven to rotate, and then the corresponding first side plate 463 and the second side plate 464 are driven to adjust their displacements through the corresponding racks 465, so as to realize the misalignment adjustment of the similar samples after loading.

[0068] Please refer to Figure 1 、 Figure 4 、 Figure 5 and Figure 6 In the embodiment of the present invention, a fixed seat is integrally provided on the top shell wall of the lens base 1, and the lens arm 2 is installed on the fixed seat through a pin shaft. The angle adjustment of the lens arm 2 can be realized by the assembly of the pin shaft on the fixed seat. The stage 3 is composed of a bracket and a carrier plate. Among them, the carrier plate is fixedly connected to the top end of the bracket, and the bracket is fixedly connected to the bottom side wall of the lens arm 2 through bolts.

[0069] A light passing hole is provided on the carrier plate, and the shutter 5 is rotatably connected to the bottom shell wall of the carrier plate. Among them, the holes on the shutter 5 coincide with the light passing hole. The reflector 6 is installed on the bracket, and the reflector 6 is used to reflect light through the light passing hole. A plurality of holes are provided on the shutter 5 along the circumferential direction, and the diameters of the holes are different from each other, for switching the corresponding light passing holes.

[0070] A groove and a guide groove are provided on the top side wall of the lens arm 2. Among them, there are two guide grooves, which are respectively located on the front and rear sides of the groove. In each guide groove, a guide bar is slidably connected, and the sides of the plurality of guide bars away from the lens arm 2 are fixedly connected to the focusing structure 10 together. The setting of the guide groove and the guide bar is used to ensure the stability of the observation component during the automatic lifting adjustment.

[0071] The observation piece 11 is composed of a converter, a lens barrel, an eyepiece and an objective lens. Among them, the lens barrel is arranged on the top of the converter, and there are multiple objective lenses, which are respectively arranged on the bottom of the converter along the circumferential direction. There is a magnification difference between the multiple objective lenses, so as to realize a more detailed observation of the sample. The eyepiece is inserted into the top end of the lens barrel, and the eyepiece, the objective lens and the light passing hole are on the same axis line. The observation piece 11 is movably connected to the focusing structure 10. The movement of the focusing structure 10 realizes the manual rough adjustment and fine adjustment of the observation piece 11, so as to further ensure the clarity of the sample observation.

[0072] Please refer to Figure 1 、 Figure 4 and Figure 5 , in the embodiment of the present invention, the first motor 7 and the reducer main body 8 are both arranged on the top outer wall of the mirror arm 2. The bottom end of the lead screw 9 penetrates through the top shell wall of the groove and is rotatably connected to the bottom inner wall of the groove through a bearing. An internally threaded seat is threadedly connected to the lead screw 9, and the side wall of the internally threaded seat is installed on the focusing structure 10 through screws. The driving force of the first motor 7 is decelerated under the action of the reducer main body 8, thereby driving the lead screw 9 to rotate slowly. The internally threaded seat moves on the lead screw 9, so as to realize the lifting displacement of the focusing structure 10.

[0073] A notch located on the mirror arm 2 is opened on the left side of the reducer main body 8. The battery main body 12 is assembled in the notch for providing power. The identification module 13 is installed on the right shell wall of the mirror arm 2, and the control module 14 is arranged on the front shell wall of the mirror arm 2. The identification module 13 collects information and transmits it into the control module 14. The control module 14 compares the received information and then controls the driving module.

[0074] Please refer to Figure 7 , in the embodiment of the present invention, the driving mechanism includes a support frame 41 fixedly connected to the carrier plate by bolts. A cushion seat is installed on the top shell wall of the support frame 41, and a second motor 42 is connected to the cushion seat by bolts. A worm 43 is arranged at the output end of the second motor 42, and a worm gear 44 meshing with the worm 43 is arranged on the side of the worm 43. A rotating shaft is installed on the worm gear 44, and the bottom end of the rotating shaft is rotatably connected to the top shell wall of the support frame 41 through a bearing. The working station plate 45 is fixedly connected to the top end of the rotating shaft. An annular groove is opened on the bottom shell wall of the working station plate 45.

[0075] One end of the worm 43 away from the second motor 42 is rotatably connected to a support plate through a bearing, and the bottom end of the support plate is fixedly connected to the support frame 41. There is a self-locking function in the meshing transmission between the worm 43 and the worm gear 44, so as to avoid the phenomenon of the working station plate 45 being displaced under the action of rotational inertia when the rotation of the working station plate 45 is switched.

[0076] Four cutouts are opened on the working station plate 45 along the circumferential direction for serving as different working stations, and a plurality of placing mechanisms 46 correspond to the plurality of cutouts one by one. The plurality of working stations arranged on the working station plate 45 realize the switching operation of the working stations when the working station plate 45 rotates 90 degrees.

[0077] Please refer to Figures 10-11, in the embodiment of the present invention, the base member 461 includes an L-shaped plate 4611 fixedly connected to the top wall of the workbench 45 by screws. A slide rail 4612 is integrally provided on the side wall of the L-shaped plate 4611, and reset members 4613 are installed on both the upper and lower sides of the slide rail 4612 on the side wall of the L-shaped plate 4611. The convenient loading and unloading of the base member 461 on the workbench 45 enables the product to be quickly maintained and replaced.

[0078] The reset member 4613 is composed of an end plate, a guide rod, a reset spring and a carrier seat. Among them, there are two end plates, which are respectively arranged at both ends of the guide rod and fixedly connected to the side wall of the L-shaped plate 4611. The carrier seat and the reset spring are sleeved on the guide rod. Among them, there are two reset springs, which are respectively located on both sides of the carrier seat. The carrier seat and the U-shaped plate 462 are fixedly connected by bolts, and the U-shaped plate 462 is slidably connected to the slide rail 4612. The U-shaped plate 462 can slide smoothly horizontally on the slide rail 4612. Under the action of the reset spring in the reset member 4613, the U-shaped plate 462 can be quickly centered and reset by itself, realizing the accuracy and comprehensiveness of sample observation.

[0079] Two slide bars are integrally provided on the inner walls on both sides of the U-shaped plate 462. The first side plate 463 is slidably connected to the upper slide bar, and the second side plate 464 is slidably connected to the lower slide bar. The first side plate 463 and the second side plate 464 are stably moved and adjusted under the cooperation of the slide bars.

[0080] A convex strip is integrally provided on the side wall of each of the first side plate 463 and the second side plate 464. A plurality of racks 465 are respectively fixedly connected to the corresponding convex strips. Both ends of the adjusting shaft respectively penetrate through the corresponding side walls of the U-shaped plate 462, and an adjusting handle is installed. The movement of the adjusting shaft realizes the adjustment of a plurality of gears 466, thereby driving the movement of the racks 465.

[0081] Please refer to Figure 1 And Figure 12 , in the embodiment of the present invention, a first convex platform and a second convex platform are integrally provided on the inner walls of each of the first side plate 463 and the second side plate 464, and the gap between the first convex platform and the second convex platform is used to accommodate the sample to be measured.

[0082] The clamping assembly includes a pressing piece clamp 467 provided on the first convex platform. The pressing piece clamp 467 is composed of a positioning rod and a pressing glass sheet. Among them, the positioning rod is threadedly connected to the top wall of the first convex platform, and the pressing glass sheet is sleeved on the positioning rod. The pressing glass sheet adopts an elastic metal sheet in this embodiment, and thus, by adjusting the pressing glass sheet, the stable clamping of the sample is realized.

[0083] A focusing method for a focusing mechanism of an optical microscope proposed by the present invention includes the following steps:

[0084] Step 1. Light alignment of the microscope main body: Take out the microscope main body, place it on the table, then assemble the eyepiece and objective lens on the observation component 11, and align the low-power lens with the light aperture.

[0085] Adjust the diaphragm 5 so that the larger hole on it is aligned with the light aperture. Fix one eye on the eyepiece and keep the other eye open. Adjust the reflector 6 so that the light is reflected into the lens barrel through the light aperture. A bright white circular field of view can be seen through the eyepiece, thus completing the light alignment.

[0086] Step 2. Sample preparation: First, prepare samples from various items to be measured. Two samples of the same type of item to be measured are made for observation and comparison. After the sample preparation is completed, attach an identification code to it, and record the identification code information in the control module 14, so as to facilitate quick focusing during its observation.

[0087] Step 3. Sample loading: Manually load. Turn on the drive mechanism in the placement component 4 through the control module 14, so that the workbench plate 45 rotates and changes positions, thereby realizing the switching of multiple placement mechanisms 46 on it. Pause every time the placement mechanism 46 completes the switching, to facilitate the staff to place two samples of the same type to be measured on the side plate one 463 and side plate two 464 of the same placement mechanism 46. After the samples are placed, manually adjust the glass slide holder 467 in the clamping component on it to complete the loading of the samples. Then, turn on the drive mechanism again with the control module 14, and repeat the process to complete the manual loading of different types of samples on the corresponding placement mechanisms 46.

[0088] Step 4. Sample focusing: Consists of automatic focusing and manual focusing;

[0089] Automatic focusing: The identification module 13 scans the identification code of the corresponding sample on the placement mechanism 46 in the area to be observed. After the identification code scanning is completed, the identification module 13 transmits the scanned information to the control module 14. The control module 14 compares the received information with the pre-recorded information. After confirming the information, the control module 14 drives the motor one 7 in the drive module according to the relevant information requirements. The motor one 7 drives the lead screw 9 to rotate slowly after the deceleration movement of the reducer main body 8. The movement of the lead screw 9 enables the overall lifting adjustment of the observation component, thereby realizing the automatic rough focusing of the observation component.

[0090] Manual focusing: After the automatic rough focusing is completed, manually adjust the focusing structure 10 in the observation component, so that the observation component 11 moves, thereby completing the fine focusing of the observation component 11, facilitating the user to quickly focus and observe the sample to be measured.

[0091] Step Five, Sample Adjustment: After the sample is focused, during the observation process, the U-shaped plate 462 in the corresponding object placement mechanism 46 can be horizontally pushed and adjusted to achieve all-round observation of the sample. When switching to the same type of sample, by adjusting the adjustment shaft, the driving gear 466 is driven to move, and under the action of the rack 465, the first side plate 463 and the second side plate 464 are transposed to achieve the transposition of the samples loaded thereon.

[0092] Step Six, Simple Focusing: After the transposition of the same type of samples is completed, the focusing structure 10 is slightly adjusted again to complete the focusing of the sample, facilitating its convenient observation.

[0093] Step Seven, Focusing for Switching to Different Types of Samples; After observing multiple samples on the same object placement mechanism 46, the motor two 42 of the driving mechanism in the object placement component 4 is started through the control module 14. The operation of the motor two 42 causes the worm 43 to rotate, driving the worm wheel 44 to move, and driving the station plate 45 to rotate through the rotating shaft to achieve the station switching of multiple object placement mechanisms 46 thereon. After the object placement mechanism 46 is transposed, the recognition module 13 recognizes the sample to be measured again, and then the driving module is made to operate to achieve automatic focusing. After the automatic focusing is completed, manual focusing is used to achieve clear observation of the sample.

[0094] Embodiment Two: This embodiment is an improvement based on Embodiment One: Please refer to Figure 3 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 13 , in the embodiment of the present invention, the clamping assembly is composed of a pressing piece 468 and an auxiliary piece 15. Among them, the pressing piece 468 includes a first through hole opened on the upper first boss and a second through hole opened on the lower first boss. A first movable rod 4681 is movably connected in the first through hole, and a first pressing piece 4682 for pressing and clamping the sample is sleeved on the first movable rod 4681. An arc-shaped groove one is opened on the peripheral wall of the first movable rod 4681, and a first convex rod is slidably connected in the arc-shaped groove one. One end of the first convex rod away from the arc-shaped groove one is fixedly connected to an ear plate one, and the bottom end of the ear plate one is fixedly connected to the first boss. When the first movable rod 4681 moves up and down, under the cooperation of the arc-shaped groove one and the first convex rod, the first movable rod 4681 realizes a rotary up and down movement, driving the first pressing piece 4682 thereon to move accordingly.

[0095] A movable rod two 4683 is movably connected in the through hole two. A pressing piece two 4684 for pressing and clamping a sample is sleeved on the movable rod two 4683. The bottom end of the movable rod two 4683 penetrates through the corresponding side plate two 464 and is rotatably connected with a ball. An arc-shaped groove two is formed on the peripheral wall of the movable rod two 4683, and a convex rod two is slidably connected in the arc-shaped groove two. One end of the convex rod two away from the arc-shaped groove two is fixedly connected with an ear plate two, and the top end of the ear plate two is fixedly connected to the bottom shell wall of the side plate two 464. When the movable rod two 4683 moves up and down, it performs a rotary up and down movement under the cooperation of the arc-shaped groove two and the convex rod two, driving the pressing piece two 4684 thereon to perform corresponding activities.

[0096] The top end of the movable rod one 4681 is rotatably connected with a disc, and a special-shaped plate 4685 is installed on the top end of the disc through bolts. The other end of the special-shaped plate 4685 corresponds to the movable rod two 4683 below. A round hole is formed in the special-shaped plate 4685, and a round rod 4686 is arranged in the round hole. The bottom end of the round rod 4686 is fixedly connected to the corresponding side plate one 463, and a compression spring located on the round rod 4686 is sleeved between the side plate one 463 and the special-shaped plate 4685. The up and down movement of the movable rod two 4683 jacks up the special-shaped plate 4685, and the special-shaped plate 4685 drives the movable rod one 4681 to perform synchronous movement, stretching the compression spring. Then, under the elastic action of the compression spring, the special-shaped plate 4685 is reset, and the reset movement of the movable rod one 4681 and the movable rod two 4683 is synchronously realized.

[0097] Please refer to Figure 3 、 Figure 4 、 Figure 8 、 Figure 9 and Figure 14 In the embodiment of the present invention, the auxiliary member 15 includes a bracket 151 fixedly connected to the bottom shell wall of the support frame 41 through bolts. An arc-shaped table 152 is fixedly connected to the top of the bracket 151. Inclined surfaces are formed on both sides of the arc-shaped table 152 for facilitating the movable contact of the balls. Among them, the arc-shaped table 152 is located directly below the annular groove. The setting of the arc-shaped table 152 cooperates with the annular groove. Thus, during the rotation of the workbench 45, when the balls on the bottom end of the movable rod two 4683 of the clamping assembly in the object placing mechanism 46 thereon contact the inclined surfaces of the arc-shaped table 152, the movable rod two 4683 is driven to lift with the continuous movement of the workbench 45, thereby realizing the cancellation of the limit on the pressing piece 468.

[0098] A focusing method for a focusing mechanism of an optical microscope proposed by the present invention includes the following steps:

[0099] Step 1: Light alignment of the microscope main body: Take out the microscope main body, place it on the table, then assemble the eyepiece and objective lens on the observation member 11, and align the low-power lens with the light hole.

[0100] Adjust the shutter 5 so that the larger hole on it aligns with the light passing hole. Fix one eye on the eyepiece and keep the other eye open. Adjust the reflector 6 so that the light is reflected into the lens barrel through the light passing hole. A bright white circular field of view can be seen through the eyepiece, thus completing the optical alignment.

[0101] Step 2: Sample production: First, produce samples of various items to be measured. Make two samples of the same type of item to be measured for observation and comparison. After the sample production is completed, attach an identification code to it and record the identification code information in the control module 14, so as to facilitate quick focusing during the observation.

[0102] Step 3: Sample loading: Automatically load. Turn on the drive mechanism in the object placement component 4 through the control module 14, so that the workbench plate 45 rotates and changes positions, thereby realizing the switching of multiple object placement mechanisms 46 on it. Pause every time the object placement mechanism 46 completes the switching. During the movement of the workbench plate 45, the ball at the bottom of the movable rod two 4683 of the pressing piece 468 in the object placement mechanism 46 contacts the inclined surface of the arc-shaped table 152 in the auxiliary piece 15. The movement of the workbench plate 45 causes the ball to move on the inclined surface, and then the movable rod two 4683 gradually moves upward. When the movable rod two 4683 moves upward, it drives the pressing piece two 4684 to lift up. When the movable rod two 4683 moves upward, it rotates upward under the action of the arc-shaped groove two and the convex rod two, so that the pressing piece two 4684 is lifted in a rotational manner, thereby canceling the clamping action on the sample.

[0103] When the movable rod two 4683 moves upward, its top pushes up the upper special-shaped plate 4685, thereby stretching and squeezing the spring and driving the movable rod one 4681 to move synchronously. During the adjustment of the movable rod one 4681, it also drives the pressing piece one 4682 to lift in a rotational manner through the cooperation of the arc-shaped groove one and the convex rod one, canceling the clamping action on the sample.

[0104] When the object placement component 4 completes the station switching of the object placement mechanism 46 on it, multiple movable rods two 4683 on the object placement mechanism 46 are all on the auxiliary piece 15, and thus the clamping component in the object placement mechanism 46 can be opened, facilitating the user to place the sample on the object placement mechanism 46. After the sample is placed, the object placement mechanism 46 leaves the auxiliary piece 15 under the action of the rotation and position change of the object placement component 4. Under the action of the compressed spring, the pressing piece 468 then performs a reset movement, thereby realizing the automatic clamping and limiting of the sample. Repeat the cycle to complete the automatic loading of different types of samples on the corresponding object placement mechanisms 46.

[0105] Step 4: Sample focusing: Consists of automatic focusing and manual focusing;

[0106] Auto-focus: The recognition module 13 scans the identification code of the corresponding sample on the placement mechanism 46 in the area to be observed. After the identification code scanning is completed, the recognition module 13 transmits the scanned information to the control module 14. The control module 14 compares the received information with the pre-entered information. After confirming the information, the control module 14 drives the motor 7 in the drive module according to the relevant information requirements. After the deceleration movement of the reducer body 8 by the motor 7, the lead screw 9 is driven to rotate slowly. The movement of the lead screw 9 enables the overall lifting adjustment of the observation component, thereby realizing the automatic rough focusing of the observation component.

[0107] Manual focus: After the automatic rough focusing is completed, the focusing structure 10 in the observation component is manually adjusted, so that the observation piece 11 moves, thereby completing the fine focusing of the observation piece 11, which is convenient for the user to quickly focus on and observe the sample to be measured.

[0108] Step Five, Sample Adjustment: After the sample is focused, during the observation process, the U-shaped plate 462 in the corresponding placement mechanism 46 can be adjusted horizontally, thereby realizing the all-round observation of the sample. When the samples in the same placement mechanism 46 need to be replaced and observed, the adjustment shaft in the placement mechanism 46 is adjusted, thereby driving the corresponding gear 466 to move. During the rotation of the gear 466, the rack 465 engaged with it is driven to move, thereby driving the corresponding side plate one 463 and side plate two 464 to move out of position. Thus, the positions of two samples in the same placement mechanism 46 are adjusted, which is convenient for the observation and comparison of the same item.

[0109] Step Six, Simple Focus: After the replacement of the same type of samples is completed, the focusing structure 10 needs to be manually adjusted again, so that the observation piece 11 moves, thereby completing the fine focusing of the observation piece 11, which is convenient for the user to quickly focus on and observe the adjusted sample to be measured.

[0110] Step Seven, Switching Focus for Different Types of Samples; After observing multiple samples on the same placement mechanism 46, the control module 14 starts the motor 42 of the drive mechanism in the placement component 4. The operation of the motor 42 causes the worm 43 to rotate, driving the worm gear 44 to move, and driving the station plate 45 to rotate through the rotating shaft, realizing the station switching of multiple placement mechanisms 46 thereon. After the placement mechanism 46 is repositioned, the recognition module 13 identifies the sample to be measured again, and then makes the drive module operate to realize automatic focusing. After the automatic focusing is completed, manual focusing is performed again to achieve a clear observation of the sample.

[0111] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered within the protection scope of the present invention.

Claims

1. A focusing mechanism for an optical microscope, comprising a microscope body consisting of a microscope base (1), a microscope arm (2), a stage (3), a light shield (5), a reflector (6) and an observation component, wherein: The observation component is composed of a focusing structure (10) and an observation piece (11), and is characterized in that: the mirror arm (2) is provided with a driving module for driving the observation component to perform lifting movement, an identification module (13) for identifying the sample to be measured, a control module (14) for central control processing, and a battery body (12) for providing power, wherein the driving module is composed of a motor 1 (7), a reducer body (8), and a screw (9), wherein the motor 1 (7) and the screw (9) are respectively assembled at the input end and the output end of the reducer body (8), and the focusing structure (10) is threadedly connected to the screw (9); The loading platform (3) is provided with a placement component (4) for placing the object to be measured, the placement component (4) being composed of a driving mechanism, a work station plate (45) and a placement mechanism (46), wherein the driving mechanism is mounted on the loading platform (3), the work station plate (45) is arranged on the driving mechanism, and the placement mechanism (46) comprises a plurality of placement mechanisms (46) which are arranged on the work station plate (45) along a circumferential direction; The storage mechanism (46) comprises a base member (461) arranged on the work station plate (45), a U-shaped plate (462) is movably connected to the side wall of the base member (461), a side plate 1 (463) and a side plate 2 (464) are slidably connected to the inner walls on both sides of the U-shaped plate (462), a rack (465) is arranged on each side plate 1 (463) and the side plate 2 (464), and a gear (466) is arranged between the two symmetrical racks (465) for meshing and transmitting with the racks, The gears (466) are connected in series via an adjusting shaft, and a clamping assembly is provided on each of the first side plate (463) and the second side plate (464); the base member (461) comprises an L-shaped plate (4611) fixedly connected to the top shell wall of the work station plate (45) via screws, a slide rail (4612) is integrally provided on the side wall of the L-shaped plate (4611), and a reset member (4613) located on the side wall of the L-shaped plate (4611) is installed above and below the slide rail (4612).

2. A focusing mechanism for an optical microscope according to claim 1, characterized in that: A fixing seat is integrally provided on the top shell wall of the mirror base (1); the mirror arm (2) is mounted on the fixing seat via a pin shaft; the stage (3) is composed of a bracket and a carrier plate, wherein the carrier plate is fixedly connected to the top of the bracket, and the bracket is fixedly connected to the bottom side wall of the mirror arm (2) via bolts; a light-through hole is provided on the carrier plate; the shade (5) is rotatably connected to the bottom shell wall of the carrier plate, wherein the hole on the shade (5) overlaps with the light-through hole; the reflector (6) is mounted on the bracket, and the reflector (6) is used to reflect light passing through the light-through hole.

3. A focusing mechanism for an optical microscope according to claim 2, characterized in that: A groove and a guide groove are provided on the top side wall of the mirror arm (2), wherein there are two guide grooves, which are located at the front and rear sides of the groove respectively, and a guide bar is slidably connected to each guide groove, and the sides of the plurality of guide bars away from the mirror arm (2) are fixedly connected to the focusing structure (10); The observation piece (11) is composed of a converter, a lens barrel, an eyepiece and an objective lens, wherein the lens barrel is arranged at the top of the converter, the objective lens comprises a plurality of lenses, which are arranged at the bottom of the converter along a circumferential direction, and the eyepiece is plugged into the top of the lens barrel. The eyepiece, the objective lens and the light hole are located on the same axis. The observation piece (11) is movably connected to the focusing structure (10).

4. A focusing mechanism for an optical microscope according to claim 2, characterized in that: The motor 1 (7) and the reducer body (8) are both arranged on the top outer wall of the mirror arm (2); the bottom end of the screw rod (9) passes through the top shell wall of the groove and is rotatably connected to the bottom inner wall of the groove through a bearing; the screw rod (9) is threadedly connected to an inner groove seat, and the side wall of the inner groove seat is installed on the focusing structure (10) through screws; a notch located on the mirror arm (2) is opened on the left side of the reducer body (8); the battery body (12) is assembled in the notch for providing power; the identification module (13) is installed on the right shell wall of the mirror arm (2); and the control module (14) is arranged on the front shell wall of the mirror arm (2).

5. A focusing mechanism for an optical microscope according to claim 2, characterized in that: The driving mechanism comprises a support frame (41) fixedly connected to the carrier plate by bolts, a second motor (42) is mounted on the top shell wall of the support frame (41), a worm (43) is arranged at the output end of the second motor (42), a worm gear (44) meshing with the worm gear (43) is arranged on the side of the worm gear (43), a rotating shaft is mounted on the worm gear (44), the bottom end of the rotating shaft is rotatably connected to the top shell wall of the support frame (41) through a bearing, the work station disk (45) is fixedly connected to the top end of the rotating shaft, an annular groove is provided on the bottom shell wall of the work station disk (45), one end of the worm gear (43) away from the second motor (42) is rotatably connected to the support plate through a bearing, and the bottom end of the support plate is fixedly connected to the support frame (41); a boss first and a boss second are integrally arranged on the inner wall of each of the side plates (463) and the side plates (464), and the gap between the boss first and the boss second is used to accommodate the sample to be tested; The work station disk (45) is provided with a plurality of cutouts along a circumferential direction for serving as different work stations, and the plurality of placement mechanisms (46) correspond one to one to the plurality of cutouts.

6. A focusing mechanism for an optical microscope according to claim 1, characterized in that: The reset member (4613) is composed of an end plate, a guide rod, a reset spring and a carrier, wherein the end plates include two, which are respectively arranged at the two ends of the guide rod and fixedly connected to the side wall of the L-shaped plate (4611), and the carrier and the reset spring are sleeved on the guide rod, wherein the reset spring includes two, which are respectively located on both sides of the carrier, and the carrier is fixedly connected to the U-shaped plate (462) by bolts, and the U-shaped plate (462) is slidably connected to the slide rail (4612).

7. A focusing mechanism for an optical microscope according to claim 1, characterized in that: Two sliding bars are integrally provided on the inner walls on both sides of the U-shaped plate (462), the side plate 1 (463) is slidably connected to the upper sliding bar, and the side plate 2 (464) is slidably connected to the lower sliding bar, and each side wall of the side plate 1 (463) and the side plate 2 (464) is integrally provided with a convex bar, and a plurality of the racks (465) are respectively fixedly connected to the corresponding convex bars, and the two ends of the adjustment shaft respectively penetrate the corresponding side walls of the U-shaped plate (462) and are equipped with adjustment handles.

8. The focusing mechanism for an optical microscope according to claim 5, characterized in that: The clamping assembly comprises a sheet pressing clamp (467) arranged on the boss one, and the sheet pressing clamp (467) is composed of a positioning rod and a glass pressing slide, wherein the positioning rod is threadedly connected to the top shell wall of the boss one, and the glass pressing slide is sleeved on the positioning rod.

9. A focusing mechanism for an optical microscope according to claim 5, characterized in that: The clamping assembly is composed of a pressing piece (468) and an auxiliary piece (15), wherein the pressing piece (468) includes a through hole 1 formed on an upper boss 1 and a through hole 2 formed on a lower boss 1, a movable rod 1 (4681) is movably connected in the through hole 1, a pressing piece 1 (4682) for clamping a sample is sleeved on the movable rod 1 (4681), an arc groove 1 is formed on the peripheral wall of the movable rod 1 (4681), a convex rod 1 is slidably connected in the arc groove 1, an end of the convex rod 1 away from the arc groove 1 is fixedly connected to an ear plate 1, and the bottom end of the ear plate 1 is fixedly connected to the boss 1; A movable rod (4683) is movably connected in the through hole (4683), a pressing plate (4684) for clamping a sample is sleeved on the movable rod (4683), and the bottom end of the movable rod (4683) passes through the corresponding side plate (464) and is rollingly connected with a ball bearing, an arc groove (4683) is provided on the peripheral wall, a convex rod (4683) is slidably connected in the arc groove (4683), an end of the convex rod (4683) away from the arc groove (4683) is fixedly connected to an ear plate (4684), and the top end of the ear plate (4684) is fixedly connected to the bottom shell wall of the side plate (464); The top end of the movable rod 1 (4681) is movably connected to a special-shaped plate (4685), and the other end of the special-shaped plate (4685) corresponds to the movable rod 2 (4683) below. The special-shaped plate (4685) is provided with a round hole, and a round rod (4686) is provided in the round hole. The bottom end of the round rod (4686) is fixedly connected to the corresponding side plate 1 (463), and an extrusion spring located on the round rod (4686) is sleeved between the side plate 1 (463) and the special-shaped plate (4685); The auxiliary component (15) comprises a bracket (151) fixedly connected to the bottom shell wall of the support frame (41) by bolts, and a curved platform (152) is fixedly connected to the top of the bracket (151), and inclined surfaces are provided on both sides of the curved platform (152) to facilitate the movable contact of the ball, wherein the curved platform (152) is located directly below the annular groove.

10. A focusing method for a focusing mechanism of an optical microscope according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step 1: Align the microscope body: Take out the microscope body and place it on the table. Then assemble the eyepiece and objective lens on the observation unit (11) and align the low-power lens with the light aperture. Adjust the light shield (5) so that the larger hole on it is aligned with the light hole, look into the eyepiece with one eye, open the other eye, adjust the reflector (6) so that the light passes through the light hole and is reflected into the lens barrel, and a bright white circular field of view can be seen through the eyepiece, thereby completing the light calibration; Step 2, sample preparation: first prepare samples of various types of items to be tested, and prepare two samples of the same type of items to be tested. After the samples are prepared, an identification code is attached to them, and then the identification code information is recorded in the control module (14); Step 3: Sample loading: manual loading or automatic loading; Manual loading: The driving mechanism in the storage component (4) is turned on by the control module (14), so that the workstation plate (45) is rotated and replaced, thereby realizing the switching of the multiple storage mechanisms (46) thereon. Each time the storage mechanism (46) is switched, it is paused, so that the staff can place two samples of the same type to be tested on the side plate 1 (463) and the side plate 2 (464) on the same storage mechanism (46). After the samples are placed, the pressing glass slide of the pressing clamp (467) in the clamping assembly thereon is manually adjusted to complete the loading of the samples, and then the driving mechanism is turned on by the control module (14). The cycle is repeated to complete the manual loading of different types of samples on the corresponding storage mechanisms (46); Automatic loading: The driving mechanism in the storage component (4) is turned on through the control module (14), so that the work station plate (45) is rotated and replaced, thereby realizing the switching of the multiple storage mechanisms (46) thereon. Each time the storage mechanism (46) is switched, it is paused. When the storage mechanism (46) reaches the position where the auxiliary component (15) is located, each pressing piece (468) on the corresponding storage mechanism (46) is automatically opened, so that the staff can place the same type of samples to be tested on the side plate 1 (463) and the side plate 2 (464) thereon; After the sample is placed, the control module (14) is used to open the driving mechanism, thereby realizing the exchange of positions between the various placement mechanisms (46) on the work station plate (45). After the placement mechanism (46) corresponding to the auxiliary part (15) is exchanged and left, it is reset under the action of the extrusion spring, thereby realizing the clamping and limiting of the corresponding sample by each pressing plate 1 (4682) and pressing plate 2 (4684), and the cycle is repeated, thereby completing the automatic loading of different types of samples on the corresponding placement mechanism (46); Step 4: Sample focus: consists of automatic focus and manual focus; Automatic focusing: the identification module (13) identifies the identification code of the sample on the placement mechanism (46) and transmits the identification information to the control module (14). The control module (14) starts the motor 1 (7) in the drive module according to the identification information. The operation of the motor 1 (7) drives the lead screw (9) to move slowly under the reducing effect of the reducer body (8), thereby realizing the slow lifting and lowering adjustment of the observation component. Manual focus: After the automatic focus is completed, the user manually adjusts the focus structure (10) to achieve clear observation of the sample by the observation piece (11); Step 5, sample adjustment: After the sample is focused, the U-shaped plate (462) in the corresponding placement mechanism (46) can be adjusted horizontally during observation, so as to achieve all-round observation of the sample. When it is necessary to switch the same type of sample, the adjustment shaft is adjusted to drive the gear (466) to move, and the side plate 1 (463) and the side plate 2 (464) are replaced under the action of the rack (465), so as to achieve the replacement of the sample loaded thereon; Step 6: Simple focusing: After completing the transposition of the same type of samples, slightly adjust the focusing structure (10) again to complete the focusing of the sample, so as to facilitate the convenient observation of the sample; Step 7, switching focus of heterogeneous samples; the control module (14) is used to open the driving mechanism, thereby completing the rotation of the work station plate (45), driving the multiple placement mechanisms (46) arranged thereon to change positions. After the placement mechanisms (46) have completed the change of positions, the recognition module (13) recognizes the sample to be tested again, and then the driving module is operated to achieve automatic focus. After the automatic focus is completed, manual focus is used to achieve clear observation of the sample.

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