Objective lens leveling mechanism

Abstract

The utility model provides an objective lens leveling mechanism, which comprises an objective lens carrier plate and a fixing plate, an objective lens is arranged on the objective lens carrier plate, a spring mechanism is arranged between the fixing plate and the objective lens carrier plate, and the spring mechanism applies tension towards the direction of the fixing plate to the objective lens carrier plate; a sphere is arranged between the objective lens carrying plate and the fixing plate, sphere positioning grooves corresponding to the sphere are formed in the fixing plate and the objective lens carrying plate, and the two sides of the sphere are embedded into the sphere positioning grooves in the fixing plate and the objective lens carrying plate respectively; the fixing plate is adjustably connected with a first adjusting screw rod and a second adjusting screw rod. One end of the first adjusting screw rod and one end of the second adjusting screw rod abut against the objective lens carrying plate. According to the utility model, the objective lens carrier plate is pushed through the first adjusting screw rod and the second adjusting screw rod, so that the angle of the plane where the objective lens carrier plate is located is adjusted, and the sag degree between an objective lens and a sample surface is adjusted; by adjusting the sag degree between the objective lens and the sample surface, the imaging quality can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of microscopes, and particularly relates to an objective lens leveling mechanism. Background Art

[0002] In the field of medical image scanning, whether the objective lens is perpendicular to the sample surface is one of the important factors affecting the quality of the scanned image; medical image scanners or microscopes (such as microscopes and simple slide scanners) generally make the objective lens mounting surface parallel to the sample stage through precision machining and precision assembly of the objective lens mounting surface and the sample stage, so as to make the objective lens perpendicular to the sample surface.

[0003] The above method has the following disadvantages: 1. The processing and assembly requirements are extremely high, professional processing and assembly personnel need to be equipped, the cost is high, and the difficulty is great; 2. Once installed, it is impossible to make appropriate adjustments to the mounting surface of the objective lens according to the actual situation. Once it is found that the objective lens is not perpendicular to the sample stage after installation, it is necessary to disassemble, repair, process and install again, and the process is complicated. Summary of the Invention

[0004] The purpose of the utility model is to solve the deficiencies in the prior art and provide an objective lens leveling mechanism.

[0005] The purpose of the utility model is achieved through the following technical solutions: An objective lens leveling mechanism includes an objective lens carrier plate and a fixing plate. The objective lens is arranged on the objective lens carrier plate. A spring mechanism is arranged between the fixing plate and the objective lens carrier plate, and the spring mechanism applies a pulling force towards the fixing plate to the objective lens carrier plate; a sphere is arranged between the objective lens carrier plate and the fixing plate, and sphere positioning grooves corresponding to the sphere are arranged on both the fixing plate and the objective lens carrier plate. Both sides of the sphere are respectively embedded in the sphere positioning grooves on the fixing plate and the objective lens carrier plate;

[0006] The fixing plate is adjustably connected with a first adjusting screw and a second adjusting screw, and one ends of the first adjusting screw and the second adjusting screw are in contact with the objective lens carrier plate.

[0007] Preferably, an objective lens through hole is arranged on the fixing plate, and the objective lens passes through the objective lens through hole on the base plate.

[0008] Preferably, the sphere is made of wear-resistant ceramic material.

[0009] Preferably, the spring mechanism includes at least three springs, and both ends of the springs are respectively connected with the fixing plate and the objective lens carrier plate.

[0010] Preferably, spring pull rods corresponding to the springs are respectively arranged on the fixing plate and the objective lens carrier plate, and both ends of the springs are respectively connected with the spring pull rods.

[0011] Preferably, the fixing plate is provided with a first threaded hole corresponding to the first adjusting screw and a second threaded hole corresponding to the second adjusting screw. The first adjusting screw is threadedly connected to the first threaded hole, and the second adjusting screw is threadedly connected to the second threaded hole.

[0012] Preferably, one end of the first adjusting screw and the second adjusting screw close to the objective lens carrier plate is spherical. One end of the first adjusting screw and the second adjusting screw close to the objective lens carrier plate can be heat-treated such as quenching to improve the hardness and wear resistance of the ends of the first adjusting screw and the second adjusting screw.

[0013] Preferably, the objective lens carrier plate is provided with a limiting rod group corresponding to the first adjusting screw. The limiting rod group includes two parallel limiting rods. One end of the first adjusting screw close to the objective lens carrier plate is located between the two limiting rods and contacts both limiting rods simultaneously.

[0014] Preferably, the objective lens carrier plate is provided with a wear-resistant sheet corresponding to the second adjusting screw. One end of the second adjusting screw close to the objective lens carrier plate contacts the surface of the wear-resistant sheet.

[0015] Preferably, the wear-resistant sheet is made of wear-resistant ceramic material.

[0016] The beneficial effects of the present utility model are as follows: The present utility model pushes the objective lens carrier plate through the first adjusting screw and the second adjusting screw, thereby adjusting the angle of the plane where the objective lens carrier plate is located, and further adjusting the perpendicularity between the objective lens and the sample surface; by adjusting the perpendicularity between the objective lens and the sample surface, the imaging quality can be adjusted. When the present utility model adjusts the angle of the objective lens, the operation is simple and convenient, and the angle of the objective lens can be quickly adjusted as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model.

[0018] Figure 2 is a schematic structural diagram of the present utility model after removing the fixing plate.

[0019] Figure 3 is a schematic structural diagram of the objective lens carrier plate.

[0020] Figure 4 is a schematic structural diagram of the fixing plate.

[0021] In the figure: 1. Objective lens carrier plate, 2. Fixing plate, 3. Objective lens, 4. Sphere, 5. Spring, 6. First adjusting screw, 7. Second adjusting screw, 8. Sphere positioning groove, 9. Wear-resistant sheet, 10. First threaded hole, 11. Second threaded hole, 12. Objective lens through hole, 13. Spring pull rod, 14. Limiting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model 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 the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the protection scope of the present utility model.

[0023] As Figures 1 to 4 shown, an objective lens leveling mechanism includes an objective lens carrier plate 1 and a fixing plate 2. The objective lens 3 is arranged on the objective lens carrier plate 1. A spring mechanism is provided between the fixing plate 2 and the objective lens carrier plate 1, and the spring mechanism applies a pulling force to the objective lens carrier plate 1 in the direction towards the fixing plate 2; a sphere 4 is provided between the objective lens carrier plate 1 and the fixing plate 2. Sphere positioning grooves 8 corresponding to the sphere 4 are provided on both the fixing plate 2 and the objective lens carrier plate 1, and both sides of the sphere 4 are respectively embedded in the sphere positioning grooves 8 on the fixing plate 2 and the objective lens carrier plate 1;

[0024] The fixing plate 2 is adjustably connected with a first adjusting screw 6 and a second adjusting screw 7, and one ends of the first adjusting screw 6 and the second adjusting screw 7 are in contact with the objective lens carrier plate 1.

[0025] Among them, the spring mechanism applies a pulling force to the objective lens carrier plate 1 in the direction towards the fixing plate 2. Through this pulling force, both sides of the sphere 4 can be tightly attached to the fixing plate 2 and the objective lens carrier plate 1, and at the same time, one ends of the first adjusting screw 6 and the second adjusting screw 7 are also in tight contact with the objective lens carrier plate 1. The first adjusting screw 6, the second adjusting screw 7 and the sphere 4 are arranged in a triangular shape. Both the first adjusting screw 6 and the second adjusting screw 7 are in threaded cooperation with the fixing plate 2. By rotating the first adjusting screw 6 and the second adjusting screw 7, the first adjusting screw 6 and the second adjusting screw 7 can be moved, and the objective lens carrier plate 1 can be pushed by the first adjusting screw 6 and the second adjusting screw 7, so as to adjust the angle of the plane where the objective lens carrier plate 1 is located, and further adjust the perpendicularity between the objective lens 3 and the sample surface; by adjusting the perpendicularity between the objective lens 3 and the sample surface, the imaging quality can be adjusted. When the present utility model adjusts the angle of the objective lens 3, the operation is simple and convenient, and the angle of the objective lens 3 can be quickly adjusted as needed.

[0026] An objective lens through hole 12 is provided on the fixing plate 2. One end of the objective lens 3 is fixedly connected to the objective lens carrier plate 1, and the objective lens 3 passes through the objective lens through hole 12 on the base plate.

[0027] In this embodiment, the sphere 4 is made of wear-resistant ceramic material. The wear-resistant ceramic material has high hardness and wear resistance, which can reduce the wear of the sphere 4 during rotation. The sphere positioning groove 8 is a spherical groove matching the diameter of the sphere 4. The sphere 4 can roll in the sphere positioning groove 8.

[0028] The spring mechanism includes at least three springs 5, and both ends of the spring 5 are respectively connected to the fixed plate 2 and the objective lens carrier plate 1. In this embodiment, the spring mechanism includes four springs 5.

[0029] Among them, spring pull rods 13 corresponding to the springs 5 are respectively provided on the fixed plate 2 and the objective lens carrier plate 1, and both ends of the spring 5 are respectively connected to the spring pull rods 13.

[0030] A first threaded hole 10 corresponding to the first adjusting screw 6 and a second threaded hole 11 corresponding to the second adjusting screw 7 are provided on the fixed plate 2. The first adjusting screw 6 is threadedly connected to the first threaded hole 10, and the second adjusting screw 7 is threadedly connected to the second threaded hole 11. Both the first adjusting screw 6 and the second adjusting screw 7 are perpendicular to the fixed plate 2.

[0031] Furthermore, one ends of the first adjusting screw 6 and the second adjusting screw 7 close to the objective lens carrier plate 1 are spherical. A group of limiting rods 14 corresponding to the first adjusting screw 6 is provided on the objective lens carrier plate 1. The group of limiting rods 14 includes two parallel limiting rods 14. One end of the first adjusting screw 6 close to the objective lens carrier plate 1 is located between the two limiting rods 14 and contacts both of the two limiting rods 14 at the same time. Among them, both of the two limiting rods 14 are round rods. The end part of the first adjusting screw 6 is arranged between the two limiting rods 14, and the end part of the first adjusting screw 6 is partially embedded into the gap between the two limiting rods 14, so as to limit the relative sliding between the fixed plate 2 and the objective lens carrier plate 1 and avoid affecting the adjustment accuracy due to the relative sliding between the fixed plate 2 and the objective lens carrier plate 1.

[0032] A wear-resistant piece 9 corresponding to the second adjusting screw 7 is provided on the objective lens carrier plate 1. One end of the second adjusting screw 7 close to the objective lens carrier plate 1 contacts the surface of the wear-resistant piece 9. In this embodiment, the wear-resistant piece 9 is made of wear-resistant ceramic material. The wear-resistant piece 9 can reduce the wear generated when contacting the adjusting screw, so as to ensure the adjustment accuracy.

[0033] The present utility model is not limited to the above best embodiment. Anyone can obtain other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in its shape or structure, as long as it has a technical solution identical or similar to that of the present application, it falls within the protection scope of the present utility model.

Claims

1. An objective lens leveling mechanism, characterized in that, It includes an objective lens carrier plate and a fixing plate. The objective lens is arranged on the objective lens carrier plate. A spring mechanism is provided between the fixing plate and the objective lens carrier plate, and the spring mechanism applies a pulling force towards the fixing plate to the objective lens carrier plate. A sphere is provided between the objective lens carrier plate and the fixing plate. Sphere positioning grooves corresponding to the sphere are provided on both the fixing plate and the objective lens carrier plate, and both sides of the sphere are respectively embedded in the sphere positioning grooves on the fixing plate and the objective lens carrier plate. The fixing plate is adjustably connected with a first adjusting screw and a second adjusting screw, and one ends of the first adjusting screw and the second adjusting screw abut against the objective lens carrier plate.

2. The objective lens leveling mechanism according to claim 1, characterized in that, An objective lens through hole is provided on the fixing plate, and the objective lens passes through the objective lens through hole on the base plate.

3. The objective lens leveling mechanism according to claim 1, wherein The sphere is made of wear-resistant ceramic material.

4. An objective lens leveling mechanism according to claim 1, characterized in that, The spring mechanism includes at least three springs, and both ends of the springs are respectively connected with the fixing plate and the objective lens carrier plate.

5. An objective lens leveling mechanism according to claim 4, characterized in that, Spring pull rods corresponding to the springs are respectively provided on the fixing plate and the objective lens carrier plate, and both ends of the springs are respectively connected with the spring pull rods.

6. The objective lens leveling mechanism according to claim 1, characterized in that, A first threaded hole corresponding to the first adjusting screw and a second threaded hole corresponding to the second adjusting screw are provided on the fixing plate. The first adjusting screw is threadedly connected in the first threaded hole, and the second adjusting screw is threadedly connected in the second threaded hole.

7. An objective lens leveling mechanism according to claim 1, wherein, One ends of the first adjusting screw and the second adjusting screw close to the objective lens carrier plate are spherical.

8. An objective lens leveling mechanism according to claim 7, characterized in that, A limiting rod group corresponding to the first adjusting screw is provided on the objective lens carrier plate. The limiting rod group includes two parallel limiting rods, and one end of the first adjusting screw close to the objective lens carrier plate is located between the two limiting rods and contacts both of the limiting rods at the same time.

9. The objective lens leveling mechanism according to claim 7, characterized in that, A wear-resistant sheet corresponding to the second adjusting screw is provided on the objective lens carrier plate, and one end of the second adjusting screw close to the objective lens carrier plate contacts the surface of the wear-resistant sheet.

10. The objective lens leveling mechanism according to claim 9, characterized in that, The wear-resistant sheet is made of wear-resistant ceramic material.

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