Multi-degree-of-freedom adjustable microscope objective table

Abstract

The invention discloses a multi-degree-of-freedom adjustable microscope objective table, and relates to the technical field of microscope accessories. Comprising a base, an inclined platform, a supporting arm, a microscope lens, a lens depth rotary knob, a lens angle rotary knob, a lens height rotary knob, a supporting arm horizontal rotary knob, a supporting arm vertical rotary knob, a platform vertical rotary knob, a platform horizontal rotary knob, an inclined adjusting module, a cross roller X-axis guide rail, a cross roller Y-axis guide rail, a cross roller bearing and a pre-pressing spring set. The invention discloses a piezoelectric ceramic driver. According to the invention, through combination of the piezoelectric ceramic driver, the cross roller guide rail, the cross roller bearing and the pre-pressing spring group, micro-angle inclination adjustment of the microscope objective table in the front-back direction and the left-right direction is realized. The platform is characterized in that modular design and a decoupling anti-shake mechanism are adopted, the structure is compact, micron-sized displacement can be amplified at high precision, the limitation that a traditional objective table can only conduct translation or small-angle adjustment is overcome, and shaking of the platform is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of microscope accessories, in particular to a multi-degree-of-freedom adjustable microscope stage. Background Art

[0002] With the rapid development of high-precision research fields such as modern biomedicine, materials science, and micro-nano manufacturing, microscopes and their supporting devices play a vital role in scientific research and industrial testing. In order to meet diverse observation needs, the microscope stage not only needs to have basic translation adjustment functions, but also needs to achieve multi-degree-of-freedom adjustment such as tilt and rotation to a certain extent, so that researchers can observe samples in detail from different angles.

[0003] Most of the existing traditional microscope stages only support single translation adjustment in the X and Y directions, and it is difficult to achieve multi-dimensional posture adjustment such as front and back, left and right tilt. Although some high-end stages have made improvements in Z direction or small angle tilt, their structures are often complex, large in size, and have high manufacturing costs; there are still limitations in precision and stability, and they cannot meet the needs of more flexible and multi-angle observation of samples.

[0004] In addition, when adjusting tiny angles or micron-level displacements, traditional stages often lack sufficient decoupling mechanisms and anti-shake measures, which can easily cause additional shaking or displacement errors during the tilt or micro-movement process of the stage. Especially when observing living biological samples or tiny structures, this shaking will significantly affect image clarity and measurement accuracy. Summary of the invention

[0005] The main purpose of the present invention is to provide a multi-degree-of-freedom adjustable microscope stage, which can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: an inclined platform is arranged above the base, a support arm is arranged above the other side of the base, a microscope lens is arranged at the upper end of the support arm, a lens depth knob is arranged on one side of the microscope lens, a lens angle knob is arranged on one side above the support arm, a lens height knob is arranged on the other side above the support arm, a support arm horizontal knob is arranged on the outer side of the bottom of the support arm, a support arm vertical knob is arranged on one side of the base and directly below the support arm, a platform vertical knob is arranged on one side of the inclined platform, and a platform horizontal knob is also arranged on one side of the inclined platform; A tilt adjustment module is arranged at the bottom of the tilt platform, and the tilt adjustment module is externally connected to a cross-roller X-axis guide and a cross-roller Y-axis guide. A cross-roller bearing is arranged at the other end of each of the cross-roller X-axis guide and the cross-roller Y-axis guide, and a preload spring group is arranged inside the cross-roller bearing. A piezoelectric ceramic driver is also arranged at the bottom of the tilt platform, and the piezoelectric ceramic driver is electrically connected to the tilt adjustment module 12.

[0007] Furthermore, the outer ring of the cross roller bearing and the tilt adjustment module are limitedly matched by a positioning pin, and the diameter of the positioning pin is 1.0-2.0 mm.

[0008] Furthermore, the preload spring group includes a plurality of leaf springs uniformly distributed in a ring shape on the outer periphery of the cross roller bearing, and the thickness of the leaf springs is 0.2-0.5 mm.

[0009] Furthermore, the platform vertical knob and the platform horizontal knob are both connected to the side of the tilting platform through a knurled nut, and the outer diameter of the knurled nut is 12 to 15 mm.

[0010] Furthermore, the bottom end of the support arm and the base are connected by a square mortise and tenon structure, the mortise side length of the square mortise and tenon structure is 10 to 15 mm, and a pressure plate and a fastening screw are provided at the mortise and tenon joint.

[0011] Compared with the prior art, the present invention has the following beneficial effects: In view of the problem that the traditional microscope stage only supports single-plane movement and cannot achieve multi-dimensional posture adjustment, the present invention adds a tilt adjustment module and a corresponding drive and transmission mechanism between the base and the stage, so that the stage can not only perform X and Y translation, but also achieve flexible tilt and fine adjustment in the front and back, left and right directions. Compared with the conventional complex structure, the present invention adopts a modular design, with a compact overall structure, small size, low manufacturing and assembly costs, and is easy to promote and apply in a variety of microscope systems.

[0012] In view of the problem that traditional stages are prone to shaking or lack of precision when adjusting small angles or micron-level displacements, the present invention sets decoupling and anti-shake devices such as cross roller guides and preload spring groups between the tilting platform and the base, and cooperates with high-precision piezoelectric ceramic drivers to achieve precise amplification control of the tilting posture of the stage. This design not only effectively reduces the shaking caused by loose structure or external interference, but also ensures the stability and high precision of the platform during the multi-degree-of-freedom adjustment process, meeting the needs of multi-angle and high-resolution observation of samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a left view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the upper structure of the inclined platform of the present invention; Figure 4 It is a cross-sectional view of part A of the present invention.

[0014] In the figure: 1. base; 2. tilting platform; 3. support arm; 4. microscope lens; 5. lens depth knob; 6. lens angle knob; 7. lens height knob; 8. support arm horizontal knob; 9. support arm vertical knob; 10. platform vertical knob; 11. platform horizontal knob; 12. tilt adjustment module; 13. cross roller X-axis guide; 14. cross roller Y-axis guide; 15. cross roller bearing; 16. preload spring group; 17. piezoelectric ceramic driver. DETAILED DESCRIPTION

[0015] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and is not a limitation of the scope of protection, applicability or examples set forth in the claims. The functions and arrangements of the elements discussed can be changed without departing from the scope of protection of the contents of this specification. Various examples can omit, replace or add various processes or components as needed. For example, the described method can be performed in an order different from the described order, and various steps can be added, omitted or combined. In addition, the features described relative to some examples can also be combined in other examples.

[0016] As used herein, the term "including" and its variations represent open terms, meaning "including but not limited to". The term "based on" means "based at least in part on". The terms "one embodiment" and "an embodiment" mean "at least one embodiment". The term "another embodiment" means "at least one other embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other definitions may be included below, whether explicit or implicit. Unless the context clearly indicates otherwise, the definition of a term is consistent throughout the specification.

[0017] Example See also Figure 1-4 , the present invention provides a technical solution: A multi-degree-of-freedom adjustable microscope stage, wherein a tilting platform 2 is arranged above the base 1, a support arm 3 is arranged above the other side of the base 1, a microscope lens 4 is arranged on the upper end of the support arm 3, a lens depth knob 5 is arranged on one side of the microscope lens 4, a lens angle knob 6 is arranged on one side above the support arm 3, a lens height knob 7 is arranged on the other side above the support arm 3, a support arm horizontal knob 8 is arranged on the outer side of the bottom of the support arm 3, a support arm vertical knob 9 is arranged on one side of the base 1 and directly below the support arm 3, a platform vertical knob 10 is arranged on one side of the tilting platform 2, and a platform horizontal knob 11 is also arranged on one side of the tilting platform 2; A tilt adjustment module 12 is arranged at the bottom of the tilt platform 2, and the tilt adjustment module 12 is externally connected to a cross roller X-axis guide 13 and a cross roller Y-axis guide 14. The other ends of the cross roller X-axis guide 13 and the cross roller Y-axis guide 14 are respectively provided with a cross roller bearing 15, and a preload spring group 16 is arranged inside the cross roller bearing 15. A piezoelectric ceramic driver 17 is also arranged at the bottom of the tilt platform 2, and the piezoelectric ceramic driver 17 is electrically connected to the tilt adjustment module 12.

[0018] Furthermore, the outer ring of the cross roller bearing 15 and the tilt adjustment module 12 are limitedly matched by positioning pins, and the diameter of the positioning pins is 1.0-2.0 mm.

[0019] Furthermore, the preload spring group 16 includes a plurality of leaf springs uniformly distributed in a ring shape on the outer periphery of the cross roller bearing 15, and the thickness of the leaf springs is 0.2-0.5 mm.

[0020] Furthermore, the platform vertical knob 10 and the platform horizontal knob 11 are both connected to the side of the tilting platform 2 through a knurled nut, and the outer diameter of the knurled nut is 12 to 15 mm.

[0021] Furthermore, the bottom end of the support arm 3 is connected to the base 1 by a square mortise and tenon structure, the mortise side length of the square mortise and tenon structure is 10 to 15 mm, and a pressure plate and a fastening screw are provided at the mortise and tenon joint.

[0022] The present invention is mainly composed of a base, a tilting platform, a support arm, a micro lens and related adjustment components. A tilting adjustment module is arranged between the tilting platform and the base, and a cross roller X-axis guide rail, a cross roller Y-axis guide rail, a cross roller bearing and a preload spring group are integrated inside. It is driven by a piezoelectric ceramic driver to achieve micro-angle tilting in the front and back and left and right directions. Its basic working principle is that when the piezoelectric ceramic driver receives an electrical signal, it generates micron-level expansion and contraction, and the precision guide rail and support structure in the tilting adjustment module convert the expansion and contraction displacement into a small-angle swing of the tilting platform; the cross roller bearing and the preload spring group jointly play the role of supporting and suppressing excess shaking, ensuring the high precision and stability of the tilting platform during movement.

[0023] The piezoelectric ceramic driver can produce 1 to 5 microns of expansion and contraction under the action of an external voltage. If a larger range of tilt is required, a lever amplification or a flexible hinge amplification mechanism can be added between the driver and the tilt adjustment module to further amplify the tiny displacement and transmit it to the tilt platform.

[0024] This process is completed in milliseconds, thus achieving rapid response, which is particularly suitable for high-precision, multi-angle microscopic observation.

[0025] The X-axis guide rail and the Y-axis guide rail are arranged crosswise in a mutually perpendicular manner, which limits the redundant translation of the tilting platform in the horizontal direction, so that it can only tilt around the X or Y axis.

[0026] Crossed roller bearings provide low-friction, high-rigidity support by rolling rollers back and forth between the guide rails to prevent the platform from shaking or irregular deflection.

[0027] The preload spring group is distributed around the cross roller bearing or inside the tilt adjustment module, applying a continuous downward or inward preload force to the platform to eliminate the tiny gap caused by processing or assembly.

[0028] During the platform tilting process, a dynamic balance is maintained between the spring force and the actuator thrust, which can effectively reduce vibration and improve repeat positioning accuracy.

[0029] The support arm is fixed to one side by a mortise and tenon joint or bolt structure on the base, and can be fine-tuned in both horizontal and vertical directions.

[0030] The microscope lens can be fine-tuned in multiple dimensions through the lens depth knob, lens angle knob and lens height knob, which facilitates quick focusing and positioning for different samples or different observation angles.

[0031] The equipment operation process is as follows: Fix the base on the experimental platform and adjust the macro position of the support arm and the microscope head to roughly align them with the area of ​​the sample to be observed.

[0032] If you need to change the working distance or angle of the microscope lens, you can adjust and lock it using the corresponding knob.

[0033] When the sample needs to be observed at an angle, a corresponding control voltage is applied to the piezoelectric ceramic driver to cause it to expand and contract slightly.

[0034] This extension and retraction is amplified mechanically inside the tilt adjustment module or acts directly on the cross roller guide and cross roller bearing, causing the tilting platform to tilt at a micro angle around the X-axis or Y-axis.

[0035] The preloaded spring group continuously locks and dampens the platform during the entire tilting process to avoid lateral shaking or gap vibration.

[0036] After the platform completes the tilt adjustment, the operator can obtain multi-angle images of the sample through the microscope lens or the connected imaging system.

[0037] If finer tilt accuracy is required, high-precision control at the sub-micron or milliradian level can be achieved by increasing the voltage resolution or using a higher-precision driver combined with high-rigidity support of the guide rails and bearings.

[0038] If the tilt angle needs to be switched multiple times during the observation process, the high rigidity and low friction characteristics of the present invention can ensure that the tilt platform has high consistency and repeatability each time it returns to the initial position or a specific angle.

[0039] Those skilled in the art should understand that the various embodiments disclosed above can be changed and modified in various ways without departing from the essence of the invention. Therefore, the protection scope of the present invention should be defined by the appended claims.

[0040] It should be noted that not all steps and units in the above processes are necessary, and some steps or units can be ignored according to actual needs. The execution order of each step is not fixed and can be determined as needed. The device structure described in the above embodiments can be a physical structure or a logical structure, that is, some units may be implemented by the same physical entity, or some units may be implemented by multiple physical entities, or some components in multiple independent devices may be implemented together.

[0041] The specific embodiments set forth above describe exemplary embodiments, but do not represent all embodiments that may be implemented or fall within the scope of protection of the claims. The term "exemplary" used throughout this specification means "used as an example, instance, or illustration" and does not mean "preferred" or "having advantages" over other embodiments. For the purpose of providing an understanding of the described techniques, the specific embodiments include specific details. However, these techniques may be implemented without these specific details. In some instances, in order to avoid obscuring the concepts of the described embodiments, well-known structures and devices are shown in block diagram form.

[0042] The above description of the present disclosure is provided to enable any person of ordinary skill in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to those of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of protection of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but is consistent with the widest range of principles and novel features disclosed herein.

Claims

1. A multi-degree-of-freedom adjustable microscope stage, comprising a base (1), a tilting platform (2), a tilt adjustment module (12), a cross roller bearing (15), and a piezoelectric ceramic driver (17), wherein: A tilting platform (2) is arranged above the base (1), a support arm (3) is arranged above the other side of the base (1), a microscope lens (4) is arranged at the upper end of the support arm (3), a lens depth knob (5) is arranged on one side of the microscope lens (4), a lens angle knob (6) is arranged on one side above the support arm (3), a lens height knob (7) is arranged on the other side above the support arm (3), a support arm horizontal knob (8) is arranged on the outer side of the bottom of the support arm (3), a support arm vertical knob (9) is arranged on one side of the base (1) and directly below the support arm (3), a platform vertical knob (10) is arranged on one side of the tilting platform (2), and a platform horizontal knob (11) is also arranged on one side of the tilting platform (2); A tilt adjustment module (12) is arranged at the bottom of the tilt platform (2); the tilt adjustment module (12) is externally connected to a cross roller X-axis guide rail (13) and a cross roller Y-axis guide rail (14); the other ends of the cross roller X-axis guide rail (13) and the cross roller Y-axis guide rail (14) are respectively provided with a cross roller bearing (15); a preload spring group (16) is arranged inside the cross roller bearing (15); a piezoelectric ceramic driver (17) is also arranged at the bottom of the tilt platform (2); and the piezoelectric ceramic driver (17) is electrically connected to the tilt adjustment module (12).

2. The multi-degree-of-freedom adjustable microscope stage according to claim 1, characterized in that: The outer ring of the cross roller bearing (15) and the tilt adjustment module (12) are limitedly matched via a positioning pin, and the diameter of the positioning pin is 1.0 to 2.0 mm.

3. The multi-degree-of-freedom adjustable microscope stage according to claim 1, characterized in that: The preload spring group (16) comprises a plurality of leaf springs which are evenly distributed in a ring shape on the outer periphery of the cross roller bearing (15); the thickness of the leaf springs is 0.2 to 0.5 mm.

4. The multi-degree-of-freedom adjustable microscope stage according to claim 1, characterized in that: The platform vertical knob (10) and the platform horizontal knob (11) are both connected to the side of the tilting platform (2) via a knurled nut, and the outer diameter of the knurled nut is 12 to 15 mm.

5. The multi-degree-of-freedom adjustable microscope stage according to claim 1, characterized in that: The bottom end of the support arm (3) and the base (1) are connected by a square mortise and tenon structure, the mortise side length of the square mortise and tenon structure is 10 to 15 mm, and a pressure plate and a fastening screw are provided at the mortise and tenon joint.

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