Microscope automatic focusing judgment device

Abstract

The utility model belongs to the field of microscopes, and particularly relates to an automatic focusing judgment device of a microscope, which comprises an automatic focusing body, an upper connecting cylinder is fixedly mounted at the center of the top of the automatic focusing body, a camera is fixedly mounted at the top of the upper connecting cylinder, and a lower connecting cylinder is fixedly mounted at the center of the bottom of the automatic focusing body. An objective lens is fixedly mounted at the bottom end of the lower connecting cylinder, a U-shaped groove is formed in the center of the interior of the automatic focusing body, the right side of the interior of the U-shaped groove is communicated with the outside, a mounting plate is inserted into the U-shaped groove, and mounting assemblies are arranged between the front and rear surfaces of the interior of the U-shaped groove and the front and rear surfaces of the mounting plate; the mounting plate and the U-shaped groove are mounted through the mounting assembly, and a judgment assembly is arranged in the mounting plate; through the installation assembly, the judgment assembly and the automatic focusing body can be conveniently installed and detached, the judgment assembly is convenient to detach, overhaul and replace, and therefore the device is convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of microscopes, in particular to an automatic focusing judgment device for microscopes. Background Art

[0002] A microscope is an optical instrument consisting of one lens or a combination of several lenses. It is a symbol of mankind's entry into the atomic age. It is mainly used to magnify tiny objects so that they can be seen by the naked eye. Microscopes have brought a whole new world to human vision. For the first time, people saw hundreds of "new" tiny animals and plants, as well as the internal structures of everything from the human body to plant fibers. Microscopes also help scientists discover new species and doctors treat diseases. And microscopes need to make judgments when they are automatically focusing.

[0003] However, most existing automatic focusing judgment devices for microscopes are inconvenient to disassemble, repair and replace the judgment structure during use, which makes the device inconvenient to use and has poor practicality. Therefore, in order to solve the above problem, an automatic focusing judgment device for microscope is proposed. Utility Model Content

[0004] In order to make up for the shortcomings of the prior art and solve the problem that most existing automatic focusing judgment devices for microscopes are inconvenient to disassemble, repair and replace the judgment structure when in use, the utility model provides an automatic focusing judgment device for microscopes.

[0005] The utility model adopts the following technical scheme to solve the technical problem: the utility model discloses an automatic focusing judgment device for a microscope, comprising an automatic focusing body, an upper connecting tube fixedly installed at the center of the top of the automatic focusing body, a camera fixedly installed at the top of the upper connecting tube, a lower connecting tube fixedly installed at the center of the bottom of the automatic focusing body, an objective lens fixedly installed at the bottom end of the lower connecting tube, a U-shaped groove is provided at the center of the interior of the automatic focusing body, and the right side of the interior of the U-shaped groove is communicated with the outside, a mounting plate is plugged into the interior of the U-shaped groove, mounting components are provided between the front and rear surfaces of the interior of the U-shaped groove and the front and rear surfaces of the mounting plate, and the mounting plate is installed with the U-shaped groove through the mounting component, a judgment component is provided inside the mounting plate, the judgment component inside the mounting plate is installed together with the mounting plate inside the U-shaped groove of the automatic focusing body through the mounting component, and the disassembly, inspection, replacement and reinstallation of the judgment component are facilitated by the mounting component, and then the automatic focusing of the automatic focusing body is detected and judged by the judgment component, and the automatic focusing has the advantages of fast focusing speed, strong anti-interference ability and high focusing accuracy.

[0006] Preferably, the interior of the judgment component is connected to the interior of the autofocus body, the interior of the upper connecting tube, the interior of the lower connecting tube, and the camera and the interior of the objective lens, so that the slice below the objective lens can be photographed by the camera, and the judgment component can also detect and judge the position of the slice through the objective lens.

[0007] Preferably, the judgment component includes an L-shaped groove, and the L-shaped groove is opened inside the mounting plate, the inside of the L-shaped groove is communicated with the inside of the automatic focusing body, a near-infrared semiconductor laser is fixedly installed on the right side of the upper surface of the inside of the L-shaped groove, a reflector is fixedly installed on the right side between the front and rear surfaces of the inside of the L-shaped groove and corresponding to the near-infrared semiconductor laser, a position sensor is fixedly installed on the right side of the inside of the L-shaped groove, a dichroic mirror is fixedly installed on the left side between the front and rear surfaces of the inside of the L-shaped groove and corresponding to the objective lens, and a detection circuit board is fixedly installed on the left side of the inside of the L-shaped groove, and the automatic focusing of the automatic focusing body is detected and judged by the judgment component, so that the automatic focusing has the advantages of fast focusing speed, strong anti-interference ability and high focusing accuracy.

[0008] Preferably, the mounting assembly includes an inner groove, and the inner groove is opened inside the autofocus body and penetrates front and back, the interior of the inner groove is communicated with the interior of the U-shaped groove, the left sides of the front and rear surfaces of the mounting plate and corresponding to the inner groove are provided with mounting grooves, the right sides of the upper and lower surfaces of the inner groove are provided with slots, a rotating rod is rotatably connected between the two slots through a bearing, a side of the outer surface of the rotating rod close to the center of the U-shaped groove is fixedly connected to the mounting rod, and one end of the mounting rod close to the center of the U-shaped groove is clamped in the mounting groove, and the rotating rod is away from the U A rotating plate is fixedly connected to one side at the center of the inner center of the U-shaped groove, a limiting groove is provided at the center of the left side of the rotating plate, a sliding plate is slidably connected to the front of the inner groove, an extrusion rod is fixedly connected to the center of the right side of the sliding plate, and the right end of the extrusion rod is fixedly connected to a limiting block, the limiting block is inserted into the limiting groove and movably connected to the limiting groove through a bearing, a spring is fixedly connected between the left side of the sliding plate and the left side of the inner groove, a connecting rod is fixedly connected to the center of the side of the sliding plate away from the center of the inner center of the U-shaped groove, the front end of the connecting rod passes through the inner groove and is fixedly connected to a handle plate.

[0009] Preferably, a vertical through groove is provided at the center of one side of the handle plate away from the inner center of the U-shaped groove, so as to facilitate the handle plate to be pulled and moved.

[0010] Preferably, the right side of the limit block and the right side inside the limit slot are both arranged in an arc shape to facilitate the movement of the limit block inside the limit slot.

[0011] Preferably, one end of the mounting rod close to the center of the U-shaped groove and the left side of the mounting groove are both arranged in an arc shape, so that the end of the mounting rod inserted into the mounting groove fits with the interior of the mounting groove and is easy to rotate out.

[0012] The utility model is beneficial in that:

[0013] 1. The utility model facilitates the installation and disassembly of the judgment component and the automatic focusing body through the installation component, and makes the judgment component easy to disassemble, repair and replace, so that the device is easy to use and has strong practicality.

[0014] 2. The utility model detects and judges the automatic focusing of the automatic focusing body through the judging component, and enables the automatic focusing to have the advantages of fast focusing speed, strong anti-interference ability and high focusing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure in the first embodiment;

[0017] Figure 2 It is a schematic diagram of a partial front cross-section structure in the first embodiment;

[0018] Figure 3 It is a schematic diagram of a partial top-sectional structure in Embodiment 1;

[0019] Figure 4 For Example 1 Figure 3 The enlarged structural diagram at A in the middle;

[0020] Figure 5 This is a schematic diagram of the handle structure in the second embodiment.

[0021] In the figure: 1. objective lens; 2. lower connecting tube; 3. autofocus body; 4. mounting plate; 5. mounting assembly; 501. mounting rod; 502. mounting groove; 503. inner groove; 504. handle plate; 505. groove; 506. spring; 507. sliding plate; 508. connecting rod; 509. extrusion rod; 510. rotating plate; 511. limit groove; 512. limit block; 513. rotating rod; 514. slot; 6. upper connecting tube; 7. camera; 8. judgment assembly; 801. detection circuit board; 802. dichroic mirror; 803. L-shaped groove; 804. near-infrared semiconductor laser; 805. reflector; 806. position sensor; 9. U-shaped groove; 10. handle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] See also Figure 1-4As shown, a microscope automatic focusing judgment device comprises an automatic focusing body 3, an upper connecting tube 6 is fixedly installed at the top center of the automatic focusing body 3, a camera 7 is fixedly installed on the top of the upper connecting tube 6, a lower connecting tube 2 is fixedly installed at the bottom center of the automatic focusing body 3, an objective lens 1 is fixedly installed at the bottom end of the lower connecting tube 2, a U-shaped groove 9 is opened at the center of the interior of the automatic focusing body 3, and the right side of the interior of the U-shaped groove 9 is communicated with the outside, a mounting plate 4 is plugged into the interior of the U-shaped groove 9, mounting components 5 are arranged between the front and rear surfaces of the interior of the U-shaped groove 9 and the front and rear surfaces of the mounting plate 4, and the mounting plate 4 is installed with the U-shaped groove 9 through the mounting components 5, and a judgment component 8 is arranged inside the mounting plate 4; when working, the mounting component 5 is first used to make The judgment component 8 inside the mounting plate 4 is installed together with the mounting plate 4 inside the U-shaped groove 9 of the automatic focusing body 3, and the mounting component 5 facilitates the disassembly, inspection, replacement and reinstallation of the judgment component 8. Then, the camera 7 shoots the slices through the upper connecting tube 6, the automatic focusing body 3, the lower connecting tube 2 and the objective lens 1, and the automatic focusing body 3 can be automatically focused, and then judged by the judgment component 8, and then the automatic focusing of the automatic focusing body 3 is detected and judged by the judgment component 8, and the automatic focusing has the advantages of fast focusing speed, strong anti-interference ability and high focusing accuracy. Therefore, the installation component 5 facilitates the installation and disassembly of the judgment component 8 and the automatic focusing body 3, and makes the judgment component 8 easy to disassemble, inspect and replace, so that the device is easy to use and has strong practicality.

[0025] The interior of the judgment component 8 is connected to the interior of the automatic focusing body 3, the interior of the upper connecting tube 6 and the interior of the lower connecting tube 2, and the camera 7 and the interior of the objective lens 1; when working, it is convenient to capture the slice below the objective lens 1 through the camera 7, and the judgment component 8 can also detect and judge the position of the slice through the objective lens 1.

[0026] The judging component 8 comprises an L-shaped groove 803, and the L-shaped groove 803 is arranged inside the mounting plate 4, the inside of the L-shaped groove 803 is communicated with the inside of the autofocus body 3, a near-infrared semiconductor laser 804 is fixedly installed on the right side of the upper surface inside the L-shaped groove 803, a reflector 805 is fixedly installed on the right side between the front and rear surfaces inside the L-shaped groove 803 and corresponding to the near-infrared semiconductor laser 804, a position sensor 806 is fixedly installed on the right side inside the L-shaped groove 803, a dichroic mirror 802 is fixedly installed on the left side between the front and rear surfaces inside the L-shaped groove 803 and corresponding to the objective lens 1, and a detection circuit board 801 is fixedly installed on the left side inside the L-shaped groove 803; when working, the near-infrared semiconductor laser 804 is used as a light source to emit a laser beam, the laser beam is irradiated on the reflector 805, turned 90 degrees and reflected to the dichroic mirror 802 and then passed through the light The laser beam is then rotated 90 degrees by the scientific glass, and after passing through the objective lens 1, it is reflected from the focus of the slice to the objective lens 1. After passing through the objective lens 1, the laser beam goes up to the dichroic mirror 802, and then rotated 90 degrees again to irradiate the position sensor 806. When the focus position of the slice changes, the position of the light spot irradiated on the position sensor 806 will change accordingly. After detecting the change in the light spot position, the position sensor 806 converts the change in the light spot position into a current signal output, and transmits the current signal to the detection circuit module on the detection circuit board 801. The displacement change can be calculated by relying on the corresponding detection circuit, and the displacement change is transmitted to a separately provided controller, thereby controlling the scanner to make corresponding movements to correct the focal length, and the light spot position returns to the focus. Therefore, the automatic focusing of the automatic focusing body 3 is detected and judged by the judgment component 8, and the automatic focusing has the advantages of fast focusing speed, strong anti-interference ability and high focusing accuracy.

[0027] The mounting assembly 5 includes an inner groove 503, and the inner groove 503 is opened inside the autofocus body 3 and penetrates from front to back, the inner groove 503 is connected to the inside of the U-shaped groove 9, the left sides of the front and rear surfaces of the mounting plate 4 and corresponding to the inner groove 503 are provided with mounting grooves 502, the right sides of the upper and lower surfaces of the inner groove 503 are provided with slots 514, a rotating rod 513 is rotatably connected between the two slots 514 through a bearing, a mounting rod 501 is fixedly connected to one side of the outer surface of the rotating rod 513 near the inner center of the U-shaped groove 9, and one end of the mounting rod 501 near the inner center of the U-shaped groove 9 is clamped in the mounting groove 5 02, the rotating rod 513 is fixedly connected with a rotating plate 510 on one side away from the center of the U-shaped groove 9, and a limiting groove 511 is provided at the center of the left side of the rotating plate 510. A sliding plate 507 is slidably connected to the front of the inner groove 503, and an extrusion rod 509 is fixedly connected to the center of the right side of the sliding plate 507. The right end of the extrusion rod 509 is fixedly connected to a limiting block 512, and the limiting block 512 is inserted into the limiting groove 511 and is movably connected to the limiting groove 511 through a bearing. A spring 506 is fixedly connected between the left side of the sliding plate 507 and the left side of the inner groove 503. The sliding plate 507 is away from the center of the U-shaped groove 9. A connecting rod 508 is fixedly connected to the center of one side of the center, and the front end of the connecting rod 508 passes through the inner groove 503 and is fixedly connected to the handle plate 504; when working, when the mounting plate 4 and the judgment component 8 inside it are disassembled, the handle plate 504 is first pulled to move the handle plate 504, and the handle plate 504 moves and drives the connecting rod 508 to move, and then the connecting rod 508 moves and drives the sliding plate 507 to slide inside the inner groove 503, and the sliding of the sliding plate 507 drives the spring 506 to be stretched so that the spring 506 has a rebound force, and then the sliding plate 507 drives the extrusion rod 509 to move while sliding to squeeze the limit block 512, and the limit block 512 is squeezed. The rotating plate 510 is driven to rotate under the action of the rotating rod 513 through the limit block 512 and the limit groove 511, and then the rotation of the rotating plate 510 drives the installation rod 501 to rotate through the rotating rod 513, and the installation rod 501 can be rotated to rotate out of the installation groove 502 to disengage from the clamping limit of the installation plate 4, and the installation plate 4 can be pulled out and disassembled from the U-shaped groove 9. When installing again, pull the plate 504 to insert the installation plate 4 into the U-shaped groove 9, and then release the pull plate so that the installation rod 501 can rotate and clamp into the installation groove 502 under the action of the rebound force of the spring 506 to limit the installation of the installation plate 4, and make the installation plate 4 firmly installed.

[0028] A vertically penetrating groove 505 is provided at the center of the handle plate 504 on one side away from the inner center of the U-shaped groove 9; during operation, the handle plate 504 can be pulled and moved.

[0029] The right side of the limiting block 512 and the right side of the limiting groove 511 are both arranged in an arc shape; during operation, the limiting block 512 is convenient to move inside the limiting groove 511 .

[0030] The end of the mounting rod 501 close to the center of the U-shaped groove 9 and the left side of the mounting groove 502 are both arranged in an arc shape; during operation, the end of the mounting rod 501 inserted into the mounting groove 502 is convenient for fitting with the interior of the mounting groove 502, and the mounting rod 501 is convenient for rotating out.

[0031] Embodiment 2

[0032] See also Figure 5 As shown, compared with Example 1, as another implementation of the utility model, a handle 10 is fixedly connected to the center of the right side of the mounting plate 4; during operation, the mounting plate 4 can be removed from the U-shaped groove 9 by the handle for disassembly.

[0033] Working principle: the camera 7 takes a picture of the slice through the upper connecting tube 6 and the autofocus body 3 and the lower connecting tube 2 and the objective lens 1, and the autofocus body 3 can automatically focus, and then uses the near-infrared semiconductor laser 804 as a light source to emit a laser beam. The laser beam irradiates the reflector 805, turns 90 degrees and reflects to the dichroic mirror 802, and then passes through the optical glass to turn the laser beam 90 degrees again, passes through the objective lens 1, and is reflected from the slice focus to the objective lens 1. After passing through the objective lens 1, the laser beam goes up to the dichroic mirror 802, and the laser beam turns 90 degrees again and irradiates the position sensor 806. When the focus position of the slice changes, The position of the light spot irradiated on the position sensor 806 will change accordingly. After detecting the change in the light spot position, the position sensor 806 converts the change in the light spot position into a current signal output, and transmits the current signal to the detection circuit module on the detection circuit board 801. The displacement change can be calculated by relying on the corresponding detection circuit, and the displacement change is transmitted to a separate controller, so as to control the scanner to make corresponding movements to correct the focal length, and the light spot position returns to the focus. Therefore, the automatic focusing of the automatic focusing body 3 is detected and judged by the judgment component 8, and the automatic focusing has a fast focusing speed and strong anti-interference ability. And the advantages of high focusing accuracy, at the same time, when the mounting plate 4 and the judgment component 8 inside it are disassembled, first pull the handle plate 504 to move the handle plate 504, and after the handle plate 504 moves, it drives the connecting rod 508 to move, and then the connecting rod 508 moves and drives the sliding plate 507 to slide inside the inner groove 503, and the sliding of the sliding plate 507 drives the spring 506 to be stretched so that the spring 506 has a rebound force, and then the sliding plate 507 drives the extrusion rod 509 to move while sliding to squeeze the limit block 512, and after the limit block 512 is squeezed, it drives the rotating plate 510 to pass through the limit under the action of the rotating rod 513 The positioning block 512 rotates under the limit of the active connection with the limit groove 511, and then the rotation of the rotating plate 510 drives the mounting rod 501 to rotate through the rotating rod 513, and the mounting rod 501 can be rotated to rotate out of the mounting groove 502 to disengage from the clamping limit of the mounting plate 4, and the mounting plate 4 can be pulled out and disassembled from the U-shaped groove 9. When installing again, pull the plate 504 to insert the mounting plate 4 into the U-shaped groove 9, and then release the pull plate so that the mounting rod 501 rotates and clamps into the mounting groove 502 under the action of the rebound force of the spring 506 to limit the mounting plate 4 and ensure that the mounting plate 4 is firmly installed.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A microscope automatic focusing judgment device, characterized in that: The invention comprises an automatic focusing body (3), wherein an upper connecting tube (6) is fixedly mounted at the top center of the automatic focusing body (3), a camera (7) is fixedly mounted at the top of the upper connecting tube (6), a lower connecting tube (2) is fixedly mounted at the bottom center of the automatic focusing body (3), an objective lens (1) is fixedly mounted at the bottom end of the lower connecting tube (2), a U-shaped groove (9) is provided at the center of the interior of the automatic focusing body (3), and the right side of the interior of the U-shaped groove (9) is communicated with the outside, a mounting plate (4) is inserted into the interior of the U-shaped groove (9), mounting components (5) are arranged between the front and rear surfaces of the interior of the U-shaped groove (9) and the front and rear surfaces of the mounting plate (4), and the mounting plate (4) is mounted with the U-shaped groove (9) through the mounting components (5), and a judgment component (8) is arranged inside the mounting plate (4).

2. The automatic focusing judgment device for a microscope according to claim 1, characterized in that: The interior of the judgment component (8) is in communication with the interior of the automatic focusing body (3), the interior of the upper connecting tube (6) is in communication with the interior of the lower connecting tube (2), and the camera (7) is in communication with the interior of the objective lens (1).

3. The automatic focusing judgment device for a microscope according to claim 2, characterized in that: The judgment component (8) comprises an L-shaped groove (803), and the L-shaped groove (803) is arranged inside the mounting plate (4), the inside of the L-shaped groove (803) is communicated with the inside of the autofocus body (3), a near-infrared semiconductor laser (804) is fixedly mounted on the right side of the upper surface inside the L-shaped groove (803), a reflector (805) is fixedly mounted on the right side between the front and rear surfaces inside the L-shaped groove (803) and corresponding to the near-infrared semiconductor laser (804), a position sensor (806) is fixedly mounted on the right side inside the L-shaped groove (803), a dichroic mirror (802) is fixedly mounted on the left side between the front and rear surfaces inside the L-shaped groove (803) and corresponding to the objective lens (1), and a detection circuit board (801) is fixedly mounted on the left side inside the L-shaped groove (803).

4. The automatic focusing judgment device for a microscope according to claim 3, characterized in that: The mounting assembly (5) comprises an inner groove (503), and the inner groove (503) is arranged inside the autofocus body (3) and penetrates from front to back, the inner groove (503) is communicated with the inner groove (9), the mounting plate (4) is provided with mounting grooves (502) on the left sides of the front and rear surfaces and at positions corresponding to the inner groove (503), the inner groove (503) is provided with slots (514) on the right sides of the upper and lower surfaces, a rotating rod (513) is rotatably connected between the two slots (514) via a bearing, the outer surface of the rotating rod (513) is fixedly connected with a mounting rod (501) on one side close to the inner center of the U-shaped groove (9), and one end of the mounting rod (501) close to the inner center of the U-shaped groove (9) is clamped in the mounting groove (502), and the rotating rod (513) is away from the inner center of the U-shaped groove (9). A rotating plate (510) is fixedly connected to one side, a limiting groove (511) is provided at the center of the left side of the rotating plate (510), a sliding plate (507) is slidably connected to the front of the inner groove (503), an extrusion rod (509) is fixedly connected to the center of the right side of the sliding plate (507), a limiting block (512) is fixedly connected to the right end of the extrusion rod (509), the limiting block (512) is inserted into the limiting groove (511) and is movably connected to the limiting groove (511) through a bearing, a spring (506) is fixedly connected between the left side of the sliding plate (507) and the left side of the inner groove (503), a connecting rod (508) is fixedly connected to the center of the side of the sliding plate (507) away from the center of the U-shaped groove (9), the front end of the connecting rod (508) passes through the inner groove (503) and is fixedly connected to the handle plate (504).

5. The automatic focusing judgment device for a microscope according to claim 4, characterized in that: A groove (505) that penetrates vertically is formed at the center of one side of the handle plate (504) away from the inner center of the U-shaped groove (9).

6. The automatic focusing judgment device for a microscope according to claim 5, characterized in that: The right side of the limiting block (512) and the right side inside the limiting groove (511) are both arranged in an arc shape.

7. The automatic focusing judgment device for a microscope according to claim 6, characterized in that: One end of the mounting rod (501) close to the inner center of the U-shaped groove (9) and the left side of the inner part of the mounting groove (502) are both arranged in an arc shape.

Images