Focusing structure and microscopic device

Abstract

The utility model discloses a focus fixing structure and a microscopic device, and relates to the technical field of biological research, the focus fixing structure comprises a pedestal, a slide glass and a top holding member, the pedestal is provided with an objective lens; the slide glass is arranged on one side of the objective lens in a sliding manner; and the supporting piece is arranged between the objective lens and the slide glass, the supporting piece is connected with the base, and the end, close to the slide glass, of the supporting piece abuts against the slide glass, so that the vertical distance between the slide glass and the objective lens is kept unchanged. According to the technical scheme provided by the utility model, the problem that the focal length between the objective lens and the sample is changed due to the bending deformation of the slide glass or the guide rail processing or assembling error in the movement process of the slide glass can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of biological research, in particular to a fixed-focus structure and a microscopic device. Background Art

[0002] Microscopic devices are often used in life science research. Microscopic devices cover multiple fields such as optical imaging principles, precision mechanical design, electronic signal processing, automation control, image analysis algorithms, biological sample processing technologies, data management and statistical analysis methods, and user interface design. These technologies together constitute the basis of microscopic devices, enabling them to accurately detect, analyze, and count various types of cell samples, and are widely used in fields such as biomedical research, clinical diagnosis, drug screening, and environmental monitoring, providing important data support for scientific research and medical health.

[0003] When conventional microscopic devices detect multiple samples on the same set of slides, due to the bending deformation of the slides or errors in the processing or assembly of the guide rails during the movement of the slides, the problem of the change in the focal length between the objective lens and the sample usually occurs, which in turn leads to unclear imaging and inaccurate counting of the microscopic device, causing great interference to the results of experimental research. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a fixed-focus structure and a microscopic device, aiming to solve the problem that the focal length between the objective lens and the sample usually changes due to the bending deformation of the slide or errors in the processing or assembly of the guide rails during the movement of the slide.

[0005] To achieve the above purpose, a fixed-focus structure proposed by the utility model includes: a base, a slide, and a holding member. An objective lens is provided on the base; the slide is slidably arranged on one side of the objective lens; the holding member is arranged between the objective lens and the slide, the holding member is connected to the base, and one end of the holding member close to the slide abuts against the slide to keep the vertical distance between the slide and the objective lens unchanged.

[0006] In an embodiment, the fixed-focus structure further includes a sliding seat and a pressing block. The sliding seat is slidably connected to the base. The sliding seat is vertically provided with a through hole. The pressing block is elastically connected to the sliding seat and encloses a clamping space with the sliding seat; the pressing block applies a force to the slide in the direction of the holding member. The slide is clamped and limited in the clamping space and blocks the through hole; at least two sample chambers for storing samples to be measured are provided on the slide.

[0007] In one embodiment, the abutting member is disposed on the side of the base facing the wafer, and the abutting member is in sliding contact with the wafer; at least part of the structure of the abutting member is located above the objective lens, and a collection port for avoiding the objective lens is provided.

[0008] When the slide base slides relative to the base, the slide base drives different sample chambers on the wafer to pass through the collection port, so that the objective lens can collect microscopic images of the samples to be tested on the wafer through the collection port.

[0009] In one embodiment, an elastic member is disposed on the side of the slide base facing away from the pressing block, and two ends of the elastic member are elastically abutted against the slide base and the pressing block respectively.

[0010] In one embodiment, a clamping groove is formed on the pressing block, the clamping groove is located at one end of the pressing block close to the slide base, the clamping groove extends along the sliding direction of the slide base, and the top wall of the abutting member and the inner wall of the clamping groove clamp and limit the wafer.

[0011] In one embodiment, at least two arc-shaped convex platforms are formed at one end of the abutting member close to the wafer, each arc-shaped convex platform extends along the sliding direction of the slide base, and each arc-shaped convex platform is respectively disposed at two sides of the collection port at intervals.

[0012] In one embodiment, a holding wheel is disposed on each arc-shaped convex platform, the holding wheel is located at one end of the arc-shaped convex platform close to the wafer, the holding wheel is rotatably connected to the abutting member, and the holding wheel is in rotational contact with the wafer.

[0013] The present utility model further provides a microscopic device, including: a focusing structure, an illumination system, an imaging system and a focusing system. The illumination system is detachably connected to the base, the illumination system is located on the side of the wafer facing away from the objective lens, and the illumination system is used to enhance the contrast of the samples in the wafer; the imaging system is detachably connected to the base, the imaging system is located on the side of the objective lens facing away from the wafer, and the imaging system is used to record microscopic images of the samples to be tested on the wafer collected by the objective lens; the focusing system is slidably connected to the objective lens, and the focusing system is used to adjust the distance between the objective lens and the wafer.

[0014] In one embodiment, the imaging system includes a base and a camera, the base is connected to the base, the base is located on the side of the base facing away from the wafer, the camera is detachably connected to the base, and the camera is located at one end of the base close to the base.

[0015] In one embodiment, the focusing system includes a focusing bracket and a focusing motor. The focusing bracket is located between the base and the pedestal and is connected to the base. The focusing bracket is detachably connected to the objective lens, and the focusing bracket is detachably connected to the output end of the focusing motor. The focusing motor is used to adjust the distance between the objective lens and the slide.

[0016] The technical solution of the present utility model solves the problem of focal length change caused by the bending of the slide or the inconsistent thickness of the bottom film during the detection of multiple samples in the traditional microscopic device, as well as the processing error of the guide rail during the movement of the slide, by setting a fixed-focus structure. Specifically, it includes a pedestal, an objective lens, and a holding member. The slide stores the sample to be detected. The objective lens is arranged on the pedestal, and the holding member is arranged on the side of the pedestal facing the slide and is in sliding contact with the slide. When the slide slides relative to the pedestal, the slide passes by one side of the objective lens, enabling the objective lens to collect the microscopic image of the sample to be detected on the slide. This design ensures that the distance between the objective lens and the slide remains unchanged, achieving the fixed-focus function. This design solves the problem of the change in the focal length between the objective lens and the sample due to reasons such as the bending deformation of the slide or the different thicknesses of the bottom films of the slides; improves the stability and clarity of imaging, ensures the accuracy of cell counting, simplifies the operation process, enhances the versatility and applicability of the device, and provides an efficient and accurate cell counting solution for fields such as biomedical research and clinical diagnosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0018] Figure 1 It is a schematic structural diagram of an embodiment of the fixed-focus structure provided by the present utility model;

[0019] Figure 2 It is a schematic structural diagram of another embodiment of the fixed-focus structure provided by the present utility model;

[0020] Figure 3 It is a schematic structural diagram of an embodiment of the microscopic device provided by the present utility model;

[0021] Figure 4 It is a schematic structural diagram of still another embodiment of the fixed-focus structure provided by the present utility model;

[0022] Figure 5 It is a schematic structural diagram of yet another embodiment of the fixed-focus structure provided by the present utility model;

[0023] Figure 6 Structural schematic diagram of an embodiment of the sliding seat provided by the present utility model;

[0024] Figure 7 Structural schematic diagram of another embodiment of the lighting system provided by the present utility model;

[0025] Figure 8 Structural schematic diagram of an embodiment of the focusing system and the imaging system provided by the present utility model;

[0026] Figure 9 Structural schematic diagram of an embodiment of the holding member provided by the present utility model;

[0027] Figure 10 Structural schematic diagram of an embodiment of the pressing block provided by the present utility model.

[0028] Explanation of the reference numerals in the drawings:

[0029] 200, microscope device; 100, fixed-focus structure; 1, base; 11, guide rail; 12, holding member; 121, holding wheel; 12a, collection port; 2, sliding seat; 2a, through port; 21, pressing block; 21a, clamping groove; 22, elastic member; 3, slide; 31, sample chamber; 4, objective lens; 5, sliding motor; 110, lighting system; 61, lighting bracket; 62, light source; 120, focusing system; 71, focusing bracket; 72, focusing motor; 130, imaging system; 81, base; 82, camera.

[0030] The realization, functional features and advantages of the object of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, such descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or is impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0034] The present utility model provides a fixed-focus structure 100.

[0035] Please refer to Figures 1 to 10 , in an embodiment of the present utility model, the fixed-focus structure 100 includes: a base 1, a carrier 3, and a holding member 12. An objective lens 4 is provided on the base 1; the carrier 3 is slidably disposed on one side of the objective lens 4; the holding member 12 is disposed between the objective lens 4 and the carrier 3, the holding member 12 is connected to the base 1, and one end of the holding member 12 close to the carrier 3 abuts against the carrier 3 so as to keep the vertical distance between the carrier 3 and the objective lens 4 unchanged.

[0036] In an embodiment, the base 1 plays a crucial role in the fixed-focus structure 100 of the present utility model. Its main function is to provide a stable support platform for the entire fixed-focus structure 100. The design of the base 1 needs to ensure sufficient rigidity and stability to withstand the weights of components such as the objective lens 4 and the holding member 12 and the forces that may be generated during operation. The base 1 is usually made of high-strength and wear-resistant materials such as aluminum alloy or stainless steel. These materials not only have excellent mechanical properties but also are convenient for processing and have high cost-effectiveness. Aluminum alloy is widely used due to its light weight, high strength, and good thermal stability; stainless steel has better corrosion resistance and durability.

[0037] In an embodiment, the carrier 3 is slidably connected to the base 1 in the horizontal direction through a guide rail 11 or a gear drive or other means to ensure stability during movement. The detection carrier can move smoothly in the horizontal direction to detect the samples on the carrier 3, while ensuring the stability of the sample during the detection process and the clarity of imaging.

[0038] In this embodiment, the main function of the objective lens 4 is to magnify the microscopic images of the samples to be measured, so that these images can be captured and observed with high resolution. The objective lens 4 is located on the base 1 and is precisely aligned with the holding member 12 and the collection port 12a of the focusing structure 100 to ensure the accuracy of image acquisition. The magnification and numerical aperture of the objective lens 4 determine its ability to resolve sample details, and its design and quality directly affect the clarity of imaging and the accuracy of cell counting. The microscopic images collected by the objective lens 4 can be transmitted to an image analysis system for cell counting, classification, and morphological analysis, providing important data support for biomedical research, clinical diagnosis, etc.

[0039] In one embodiment, the holding member 12 is disposed between the objective lens 4 and the slide 3, and the stability of the slide 3 during movement and the accuracy of positioning are ensured by means of a fixture or an elastic device, etc. The holding member 12 is disposed between the objective lens 4 and the slide 3. The holding member 12 is connected to the base 1. One end of the holding member 12 close to the slide 3 abuts against the slide 3 so that the vertical distance between the slide 3 and the objective lens 4 remains unchanged. Such a design ensures that the distance between the lens of the objective lens 4 and the slide 3 remains unchanged, ensuring the clarity and accuracy of sample imaging.

[0040] The technical solution of the present utility model solves the problem of focal length change caused by the bending of the slide 3 or the inconsistent thickness of the negative film and the processing error of the guide rail during the movement of the slide in the multi-sample detection of the traditional microscopic device 200 by setting a focusing structure 100, specifically including a base 1, an objective lens 4, and a holding member 12; the sample to be measured is placed on the slide 3; the objective lens 4 is disposed on the base 1, and the holding member 12 is disposed on the side of the base 1 facing the slide 3 and slidably abuts against the slide 3; when the slide 3 slides relative to the base 1, the slide 3 passes by one side of the objective lens 4, enabling the objective lens 4 to collect the microscopic images of the samples to be measured on the slide 3; such a design ensures that the distance between the objective lens 4 and the slide 3 remains unchanged, achieving the focusing function. This design solves the problem of the change in the focal length between the objective lens 4 and the sample due to reasons such as the bending deformation of the slide 3 or the different thicknesses of the negative films of the slide 3; improves the stability and clarity of imaging, ensures the accuracy of cell counting, simplifies the operation process, enhances the versatility and applicability of the device, and provides an efficient and accurate cell counting solution for fields such as biomedical research and clinical diagnosis.

[0041] In one embodiment of the present utility model, please refer to Figure 6, the fixed-focus structure 100 further includes a sliding seat 2 and a pressing block 21. The sliding seat 2 is slidably connected to the base 1. The sliding seat 2 is vertically penetrated with a through port 2a. The pressing block 21 is elastically connected to the sliding seat 2 and encloses a clamping space with the sliding seat 2. The pressing block 21 applies a force to the carrier 3 in the direction of the abutting member 12. The carrier 3 is clamped and limited within the clamping space and blocks the through port 2a. The carrier 3 is provided with at least two sample chambers 31 for storing the samples to be tested.

[0042] In an embodiment, the detection carrier includes a sliding seat 2, a pressing block 21, and a carrier 3. The sliding seat 2 and the base 1 are slidably connected in the horizontal direction by means of a guide rail 11 or a gear drive to ensure stability during movement. A vertically penetrating through port 2a is designed on the sliding seat 2, which is the channel for the objective lens 4 to collect microscopic images. The pressing block 21 is connected to the sliding seat 2 through an elastic element, which can be realized by a spring or elastic rubber, etc. A clamping space is formed between the pressing block 21 and the sliding seat 2, and the elastic element provides necessary pressure to ensure the stability of the carrier 3 during the sliding detection. The carrier 3 is clamped and limited within the clamping space to ensure the accuracy of the carrier 3 during movement and positioning. At least two sample chambers 31 are provided on the carrier 3 for storing the cell samples to be tested. In terms of design, it enables the operator to conduct lateral comparison of multiple groups of samples simultaneously and is also convenient for the objective lens 4 to collect microscopic images of the samples through the through port 2a. The detection carrier can move smoothly in the horizontal direction to achieve one-by-one detection of multiple sample chambers 31, while ensuring the stability of the samples during the detection process and the clarity of imaging.

[0043] In an embodiment of the present utility model, please refer to Figure 6 , the abutting member 12 is provided on one side of the base 1 facing the carrier 3. The abutting member 12 is slidably abutted against the carrier 3. At least part of the structure of the abutting member 12 is located above the objective lens 4 and is provided with a collection port 12a for avoiding the objective lens 4. When the sliding seat 2 slides relative to the base 1, the sliding seat 2 drives different sample chambers 31 on the carrier 3 to pass through the collection port 12a, so that the objective lens 4 can collect microscopic images of the samples to be tested on the carrier 3 through the collection port 12a.

[0044] In this embodiment, the holding member 12 is located on the side of the base 1 facing the carrier 3. The pressing block 21 applies a stable force to the carrier 3 through elastic connection. The direction of this force is towards the holding member 12, so that the carrier 3 and the holding member 12 achieve sliding contact, ensuring the stability of the carrier 3 during movement and the accuracy of positioning. At least a part of the structure of the holding member 12 is located directly above the objective lens 4, and a collection port 12a is provided on the holding member 12. The size of the collection port 12a is adapted to the lens of the objective lens 4 to avoid the objective lens 4, allowing the objective lens 4 to directly align with the sample chamber 31 on the carrier 3 through the collection port 12a for microscopic image acquisition. Such a design ensures that the distance between the lens of the objective lens 4 and the sample chamber 31 on the carrier 3 remains unchanged, ensuring the clarity and accuracy of sample imaging.

[0045] In an embodiment of the present utility model, please refer to Figure 6 , on the side of the slide base 2 facing away from the pressing block 21, an elastic member 22 is provided. The two ends of the elastic member 22 are elastically abutted against the slide base 2 and the pressing block 21 respectively.

[0046] In a specific embodiment of the present utility model, an elastic member 22 is assembled on the side of the slide base 2 facing away from the pressing block 21. The elastic member 22 is generally made of materials such as springs or elastic rubbers. The two ends of the elastic member 22 are elastically abutted against the slide base 2 and the pressing block 21 through bolt structures. Specifically, one end of the elastic member 22 is fixed or connected to a corresponding part of the slide base 2, and the other end is connected to a corresponding part of the pressing block 21 through a bolt structure, forming an elastic clamping structure. This design enables the pressing block 21 to automatically adjust the pressure according to the position change of the carrier 3 while applying a force to the carrier 3, maintaining the stability and positioning accuracy of the carrier 3. The elastic characteristics of the elastic member 22 allow a certain degree of displacement and deformation, thereby absorbing the minute vibrations and impacts caused by operations or sample loading, ensuring the smoothness and reliability of the entire microscopic device 200 during the detection process.

[0047] In an embodiment of the present utility model, please refer to Figure 6 and Figure 10 , a clamping groove 21a is provided on the pressing block 21. The clamping groove 21a is located at one end of the pressing block 21 close to the slide base 2. The clamping groove 21a extends along the sliding direction of the slide base 2. The top wall of the holding member 12 and the inner wall of the clamping groove 21a clamp and limit the carrier 3.

[0048] In this embodiment, the surface of the pressing block 21 is designed with a clamping groove 21a extending along the sliding direction of the sliding seat 2. The clamping groove 21a is located at one end of the pressing block 21 close to the sliding seat 2. The inner wall of the clamping groove 21a is specially designed to cooperate with the edge part of the carrier sheet 3 to achieve stable clamping of the carrier sheet 3. The top wall of the holding member 12 and the inner wall of the clamping groove 21a on the pressing block 21 work together to limit the carrier sheet 3, ensuring that the carrier sheet 3 maintains the correct position and direction when moving on the sliding seat 2. This design not only provides a simple and effective mechanism for fixing the carrier sheet 3, but also ensures the smoothness and stability of the carrier sheet 3 during movement by making the extending direction of the clamping groove 21a consistent with the sliding direction of the sliding seat 2; the cooperation between the top wall of the sliding seat 2 and the inner wall of the clamping groove 21a also provides the necessary clamping force to prevent the carrier sheet 3 from shifting or vibrating during the detection process, thereby ensuring the accurate counting of cell samples and the imaging quality.

[0049] In an embodiment of the present utility model, please refer to Figure 9 , at least two arc-shaped protrusions are formed at one end of the holding member 12 close to the carrier sheet 3. Each arc-shaped protrusion extends along the sliding direction of the sliding seat 2, and each arc-shaped protrusion is respectively arranged at both sides of the collection port 12a at intervals.

[0050] In this embodiment, at least two arc-shaped protrusions are formed at one end of the holding member 12 close to the carrier sheet 3. These protrusions are symmetrically distributed on both sides of the collection port 12a as required. Each arc-shaped protrusion extends along the sliding direction of the sliding seat 2, ensuring a match with the sliding path of the carrier sheet 3. These arc-shaped protrusions are respectively arranged at both sides of the collection port 12a at intervals, providing additional support and positioning points for the sample chamber 31 of the carrier sheet 3 to be detected. The design of the arc-shaped protrusions not only enhances the stability of the carrier sheet 3, but also helps to guide the carrier sheet 3 to smoothly pass through the collection port 12a, ensuring the precise alignment of the sample chamber 31 and the high-quality acquisition of microscopic images during the cell counting process, and ensuring that the focal length between the objective lens 4 and the sample chamber 31 to be detected remains unchanged. In this way, the cooperation between the arc-shaped protrusions of the holding member 12 and the collection port 12a further improves the operation accuracy of the microscopic device 200 and the reliability of sample detection.

[0051] In an embodiment of the present utility model, please refer to Figure 9 , a holding wheel 121 is provided on each arc-shaped protrusion. The holding wheel 121 is located at one end of the arc-shaped protrusion close to the carrier sheet 3. The holding wheel 121 is rotatably connected to the holding member 12, and the holding wheel 121 is in rotational contact with the carrier sheet 3.

[0052] In one embodiment, a holding wheel 121 is mounted on each arc-shaped boss. These holding wheels 121 are located at one end of the arc-shaped boss close to the carrier 3, ensuring that the contact point with the carrier 3 is in the optimal position. The holding wheel 121 and the holding member 12 are rotatably connected, such as by mechanical structures such as bearings or hinges, allowing the holding wheel 121 to rotate freely within a certain range to adapt to the movement and position change of the carrier 3. The holding wheel 121 and the carrier 3 are also in rotational abutment, meaning that the carrier 3 can roll smoothly on the holding wheel 121, reducing friction and improving the flexibility of the movement of the carrier 3. This design not only provides an effective mechanism for positioning and supporting the carrier 3, but also enhances the stability and accuracy of the carrier 3 when passing through the collection port 12a through the rotational characteristics of the holding wheel 121, thus ensuring high efficiency and high quality in the microscopic image acquisition during the cell counting process.

[0053] The present utility model also proposes a microscopic device 200. Please refer to Figure 3 , the microscopic device 200 includes a focusing structure 100, an illumination system 110, an imaging system 130, and a focusing system 120. The specific structure of the focusing structure 100 refers to the above embodiment. Since the microscopic device 200 adopts all the technical solutions of the above all embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here. Among them, the illumination system 110 is detachably connected to the base 1, the illumination system 110 is located on the side of the carrier 3 facing away from the objective lens 4, and the illumination system 110 is used to enhance the contrast of the sample in the carrier 3; the imaging system 130 is detachably connected to the base 1, the imaging system 130 is located on the side of the objective lens 4 facing away from the carrier 3, and the imaging system 130 is used to record the microscopic image of the sample to be measured on the carrier 3 collected by the objective lens 4; the focusing system 120 is slidably connected to the objective lens 4, and the focusing system 120 is used to adjust the distance between the objective lens 4 and the carrier 3.

[0054] In a specific embodiment of the present utility model, the microscopic device 200 integrates a focusing system, an illumination system 110, an imaging system 130, and a focusing system 120 to achieve efficient and accurate cell counting. The illumination system 110 is connected to the base 1 by a detachable connection method such as bolts or buckles, and is arranged on the side of the carrier 3 facing away from the objective lens 4. By providing uniform or specific pattern illumination, it enhances the contrast of the sample in the carrier 3 and improves the imaging quality. The imaging system 130 is also connected to the base 1 by a detachable method such as bolts or buckles, and is located on the side of the objective lens 4 facing away from the carrier 3. It is equipped with a camera 82 or other image capture devices for recording the microscopic image collected by the objective lens 4. The focusing system 120 is designed to be slidably connected to the objective lens 4, and adjusts the distance between the objective lens 4 and the carrier 3 through a focusing motor 72 or a manual mechanism to ensure the clarity and accuracy of the image. The focusing system ensures the relative position of the objective lens 4 and the carrier 3 is fixed to maintain the stability of imaging.

[0055] In an embodiment of the present utility model, please refer to Figure 3 and Figure 8 , the imaging system 130 includes a base 81 and a camera 82. The base 81 is connected to the base 1, and the base 81 is located on the side of the base 1 facing away from the slide 3. The camera 82 is detachably connected to the base 81, and the camera 82 is located at one end of the base 81 close to the base 1.

[0056] In one embodiment, the imaging system 130 consists of two main parts, namely the base 81 and the camera 82. The base 81 is designed to be connected to the base 1 to provide a support platform for the camera 82. The position of the base 81 is on the side of the base 1 facing away from the slide 3 to avoid interference with the movement range of the slide 3. As the core component of the imaging system 130, the camera 82 is connected to the base 81 through a detachable connection method such as bolts or snaps. This design not only facilitates the installation and maintenance of the camera 82 but also allows different types of cameras 82 to be replaced according to needs to meet different imaging requirements. The camera 82 is installed at one end of the base 81 close to the base 1 to ensure alignment with the microscopic image path collected by the objective lens 4, so as to record and transmit high-quality cell sample images. Through this design, the imaging system 130 can efficiently capture the sample images under the objective lens 4 and provide clear image data for subsequent image analysis and cell counting.

[0057] In an embodiment of the present utility model, please refer to Figure 3 and Figure 8 , the focusing system 120 includes a focusing bracket 71 and a focusing motor 72. The focusing bracket 71 is located between the base 81 and the base 1 and is connected to the base 81; the focusing bracket 71 is detachably connected to the objective lens 4, and the focusing bracket 71 is detachably connected to the output end of the focusing motor 72. The focusing motor 72 is used to adjust the distance between the objective lens 4 and the slide 3.

[0058] In a specific embodiment of the present utility model, the focusing system 120 is composed of a focusing bracket 71 and a focusing motor 72. The focusing bracket 71 is arranged between the base 81 and the base 1, and is fixedly connected or bolted to the base 81 to ensure the positioning accuracy of the entire focusing system 120. The focusing bracket 71 is detachably connected to the objective lens 4 by a buckle or a bolt, allowing for quick adjustment of the position of the objective lens 4 to adapt to different slides 3 or samples, thereby achieving precise focusing. The other end of the focusing bracket 71 is connected to the output end of the focusing motor 72 by a detachable connection means such as a bolt or a buckle. This design provides flexibility and convenience for maintenance. The focusing motor 72, as a power source, drives the focusing bracket 71 to move according to the operator's instructions or the feedback of the automatic control system, thereby finely adjusting the initial distance between the objective lens 4 and the slide 3 to ensure the clarity and accuracy of the microscopic image. Through this design, the focusing system 120 can achieve automatic or manual precise focusing operations, significantly improving the imaging quality and operation convenience of the microscopic device 200.

[0059] The above is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A fixed focus structure, characterized in that: include: A base (1), wherein an objective lens (4) is provided on the base (1); a carrier sheet (3), the carrier sheet (3) being slidably disposed on one side of the objective lens (4); and A supporting member (12) is provided between the objective lens (4) and the slide (3), the supporting member (12) is connected to the base (1), and one end of the supporting member (12) close to the slide (3) abuts against the slide (3) so that the vertical distance between the slide (3) and the objective lens (4) remains unchanged.

2. The fixed focus structure according to claim 1, characterized in that: The fixed focus structure further comprises a slide (2) and a pressure block (21); the slide (2) is slidably connected to the base (1); a through opening (2a) is vertically penetrated through the slide (2); the pressure block (21) is elastically connected to the slide (2) and encloses the slide (2) to form a clamping space; the pressure block (21) applies a force in the direction of the top holding member (12) to the carrier (3); the carrier (3) is clamped and limited within the clamping space and blocks the through opening (2a); the carrier (3) is provided with at least two sample chambers (31) for storing samples to be tested.

3. The fixed focus structure according to claim 2, characterized in that: The supporting member (12) is arranged on a side of the base (1) facing the slide (3), and the supporting member (12) is in sliding contact with the slide (3); at least a part of the structure of the supporting member (12) is located above the objective lens (4), and a collection port (12a) is provided to avoid the objective lens (4); When the slide (2) slides relative to the base (1), the slide (2) drives the different sample chambers (31) on the carrier (3) to pass through the collection port (12a), so that the objective lens (4) can collect a microscopic image of the sample to be tested on the carrier (3) through the collection port (12a).

4. The fixed focus structure according to claim 3, characterized in that: An elastic member (22) is provided on the side of the slide seat (2) facing away from the pressing block (21), and two ends of the elastic member (22) are elastically abutted against the slide seat (2) and the pressing block (21) respectively.

5. The fixed focus structure according to claim 3, characterized in that: The pressing block (21) is provided with a clamping groove (21a), and the clamping groove (21a) is located at one end of the pressing block (21) close to the slide seat (2). The clamping groove (21a) extends along the sliding direction of the slide seat (2), and the top wall of the supporting member (12) and the inner wall of the clamping groove (21a) clamp and limit the carrier (3).

6. The fixed focus structure according to claim 3, characterized in that: At least two arc-shaped bosses (121) are formed at one end of the supporting member (12) close to the carrier (3), each of the arc-shaped bosses (121) extends along the sliding direction of the slide seat (2), and each of the arc-shaped bosses (121) is arranged at intervals on both sides of the collection port (12a).

7. The fixed focus structure according to claim 6, characterized in that: A supporting wheel (122) is provided on each of the arc-shaped bosses (121). The supporting wheel (122) is located at one end of the arc-shaped boss (121) close to the carrier (3). The supporting wheel (122) is rotatably connected to the supporting member (12), and the supporting wheel (122) is rotatably abutted against the carrier (3).

8. A microscopic device, characterized in that: include: The fixed focus structure according to any one of claims 1 to 7; an illumination system (110), the illumination system (110) being detachably connected to the base (1), the illumination system (110) being located on a side of the slide (3) facing away from the objective lens (4), and the illumination system (110) being used to enhance the contrast of the sample in the slide (3); An imaging system (130), the imaging system (130) being detachably connected to the base (1), the imaging system (130) being located on a side of the objective lens (4) facing away from the slide (3), and the imaging system (130) being used to record a microscopic image of a sample to be tested on the slide (3) captured by the objective lens (4); as well as A focusing system (120) is slidably connected to the objective lens (4), and the focusing system (120) is used to adjust the distance between the objective lens (4) and the carrier (3).

9. The microscopic device according to claim 8, characterized in that The imaging system (130) comprises a base (81) and a camera (82); the base (81) is connected to the base (1); the base (81) is located on a side of the base (1) facing away from the carrier (3); the camera (82) is detachably connected to the base (81); the camera (82) is located at one end of the base (81) close to the base (1).

10. The microscopic device according to claim 9, characterized in that The focusing system (120) comprises a focusing bracket (71) and a focusing motor (72); the focusing bracket (71) is located between the base (81) and the pedestal (1), and is connected to the base (81); the focusing bracket (71) is detachably connected to the objective lens (4); the focusing bracket (71) is detachably connected to an output end of the focusing motor (72); and the focusing motor (72) is used to adjust the distance between the objective lens (4) and the carrier (3).

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