Microscope objective lens rotary table and microscope

Abstract

The invention provides a microscope objective lens rotary table and a microscope, the microscope objective lens rotary table comprises a base and a rotary table which is rotatably connected to the base and forms an accommodating space with the base, the base is provided with a light through hole, the rotary table is provided with a plurality of objective lens assembly holes, and the light through hole can directly face any objective lens assembly hole; the microscope objective lens rotary table further comprises a rotary connecting piece which is contained in the containing space and fixedly connected with the rotary table, a motor which is coaxially arranged with the rotary connecting piece, a speed reducer which is coaxially and fixedly connected with the motor, and a first rotary encoder which is coaxially arranged with the rotary connecting piece, the speed reducer drives the rotary connecting piece to rotate and drives the first rotary encoder and the rotary disc to rotate, and the first rotary encoder is used for detecting rotation angle data of the motor and feeding back the rotation angle data to an external controller. The motor drives the speed reducer to rotate, the speed reducer drives the rotary connecting piece and drives the first rotary encoder and the rotary disc to rotate, full-closed-loop feedback of the position is achieved, and the positioning precision is higher.

Description

[Technical field]

[0001] The invention belongs to the technical field of microscopes, and in particular relates to a microscope objective lens turntable and a microscope. [Background technology]

[0002] A microscope is an optical instrument used to observe tiny objects. Through the optical design of the objective lens, the light of the observed sample can be converged to form a clear image. Whether it is the same observation sample or different observation samples, there may be a need for different magnification effects. Therefore, a microscope objective turret is provided in the related art. When observing, the objective lens of different magnifications can be selected and replaced by rotating the turret. However, for the microscope objective turret in the related art, the positioning unit adopts a mechanical positioning method in which a spring is embedded in a groove, which cannot achieve precise positioning.

[0003] Therefore, it is necessary to provide a new microscope objective lens turret. [Summary of the invention]

[0004] The purpose of the present invention is to provide a microscope objective lens turret that can solve the technical problem that accurate positioning cannot be achieved in the related art.

[0005] The technical solution of the present invention is as follows:

[0006] A first aspect provides a microscope objective turret, comprising a base, a turntable rotatably connected to the base and forming a receiving space with the base, the base being provided with a light-through hole, the turntable being provided with a plurality of objective lens assembly holes, the light-through hole being directly opposite to any of the objective lens assembly holes; the microscope objective turret also comprises a rotating connection member received in the receiving space and fixedly connected to the turntable, a motor coaxially arranged with the rotating connection member, a reducer coaxially and fixedly connected with the motor, and a first rotary encoder coaxially arranged with the rotating connection member, the motor being used to drive the reducer to rotate, the reducer driving the rotating connection member to rotate and driving the first rotary encoder and the turntable to rotate, the first rotary encoder being used to detect rotation angle data of the motor and feed back the data to an external controller.

[0007] Further, in some embodiments, the rotating connecting member includes a connecting portion fixedly assembled on the turntable, and a connecting shaft fixedly connected to the connecting portion, and an end of the connecting shaft away from the connecting portion is connected to the first rotary encoder.

[0008] Further, in some embodiments, the first rotary encoder has a first rotating part coaxially arranged with the connecting shaft, and a first detecting part arranged on the outer peripheral side of the first rotating part; the first detecting part is used to detect the rotation angle data of the first rotating part and feed it back to an external controller.

[0009] Furthermore, in some embodiments, the microscope objective turret also includes a coupling, which is arranged between the motor and the reducer, and the reducer and the motor rotate coaxially through the coupling, and the connecting shaft is sequentially passed through the reducer, the coupling, and the motor from the connecting part to be connected to the first rotary encoder.

[0010] Furthermore, in some embodiments, the microscope objective turret also includes a motor support for accommodating the motor, and the motor support is fixedly accommodated in the accommodating space; the motor support has a first avoidance hole and a second avoidance hole along both ends of the connecting shaft, the coupling is at least partially located in the first avoidance hole to be connected to the motor, and one end of the connecting shaft close to the first rotary encoder extends out through the second avoidance hole to be assembled and connected with the first rotary encoder.

[0011] Furthermore, in some embodiments, the motor support includes a base fixedly connected to the base and a side wall connected to one side of the base and surrounding the outer peripheral side of the motor, the base is provided with a groove, and the side of the base facing away from the side wall covers the groove to enclose with the groove to form an assembly space for accommodating the first rotary encoder.

[0012] Furthermore, in some embodiments, the microscope objective turret further includes a second rotary encoder disposed between the motor support and the coupling, and the second rotary encoder is used to detect the rotation angle data of the motor and feed back the data to an external controller.

[0013] Furthermore, in some embodiments, the second rotary encoder includes a second rotating part that is sleeved and fixed outside the coupling, and a second detection part that is ringed on the outer circumference of the second rotating part and fixedly connected to the motor support, and the second detection part is used to detect the rotation angle data of the second rotating part and feed it back to an external controller.

[0014] Further, in some embodiments, a first limiting groove opening toward the turntable is formed on the outer peripheral side of the base, and a second limiting groove opening toward the base is formed on the outer peripheral side of the turntable, and the first limiting groove and the second limiting groove are arranged opposite to each other and spaced apart to form a limiting space; the microscope objective turntable also includes a support member arranged in the limiting space.

[0015] A second aspect of the present invention provides a microscope, comprising a plurality of objective lenses and the microscope objective lens turret as described above, wherein the plurality of objective lenses are detachably connected to the plurality of objective lens assembly holes.

[0016] The beneficial effects of the present invention are: in the present invention, the turntable can rotate relative to the base, and the light-through hole on the base can be directly opposite to any objective lens assembly hole on the turntable, so that when the object lens is assembled to the objective lens assembly hole, an optical path can be formed between the light-through hole and the object lens to realize the magnification function of the object lens. And a plurality of objective lens assembly holes can match different object lenses, thereby meeting the needs of different magnification effects. In addition, the motor, the speed reducer, the rotating connecting member and the first rotary encoder are coaxially arranged, wherein the rotating connecting member and the turntable are fixedly connected, therefore, the motor drives the speed reducer to rotate, the speed reducer drives the rotating connecting member to rotate, and drives the first rotary encoder and the turntable to rotate synchronously at the same time, so that the first rotary encoder can feed back the rotation angle data of the motor to an external controller, and the controller can judge whether to reach the set position according to the difference between the actual data and the set data, if not, the motor continues to drive the rotation until the objective lens assembly hole as the target object on the turntable reaches the set target position, thereby realizing the positioning of the objective lens assembly hole, and finally making the object lens and the light-through hole directly opposite. Therefore, the present invention can determine whether the turntable is rotated in place according to the first rotary encoder. Compared with the mechanical positioning method in the related art, the present invention can achieve full closed-loop feedback of the position, and the positioning accuracy is higher. In addition, by adding a reducer in the present invention, a smaller power motor can be used to obtain a larger torque, thereby increasing the lifting load capacity.

Brief Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the microscope objective lens turret according to the first embodiment of the present invention;

[0018] Figure 2 The microscope objective lens turret edge of the first embodiment of the present invention Figure 1 Schematic diagram of the cross section of line AA;

[0019] Figure 3 It is a schematic diagram of the three-dimensional exploded structure of the microscope objective lens turret according to the first embodiment of the present invention;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the microscope objective lens turret according to the second embodiment of the present invention;

[0021] Figure 5 The microscope objective lens turret edge of the second embodiment of the present invention Figure 4 Schematic diagram of the cross section of line AA;

[0022] Figure 6 It is a schematic diagram of the three-dimensional exploded structure of the microscope objective lens turret according to the second embodiment of the present invention.

[0023] In the figure: 1. base; 11. light-through hole; 12. groove; 13. first limiting groove; 14. boss; 141. mounting hole; 2. turntable; 21. objective lens assembly hole; 22. second limiting groove; 3. rotating connector; 31. connecting part; 32. connecting shaft; 4. motor; 5. reducer; 6. first rotary encoder; 61. first rotating part; 62. first detecting part; 7. coupling; 8. motor support; 801. first avoidance hole; 802. second avoidance hole; 81. base; 82. side wall; 9. second rotary encoder; 91. second rotating part; 92. second detecting part; 10. support member; 100. accommodating space. [Specific implementation method]

[0024] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0025] See also Figures 1 to 3 The first embodiment of the present invention provides a microscope objective turret, comprising a base 1, a turntable 2 rotatably connected to the base 1 and forming a receiving space 100 with the base 1, the base 1 is provided with a light hole 11, and the turntable 2 is provided with a plurality of objective lens assembly holes 21, and the light hole 11 can be directly opposite to any objective lens assembly hole 21; the microscope objective turret also includes a rotating connection member 3 received in the receiving space 100 and fixedly connected to the turntable 2, a motor 4 coaxially arranged with the rotating connection member 3, a reducer 5 coaxially and fixedly connected with the motor 4, and a first rotary encoder 6 coaxially arranged with the rotating connection member 3, the motor 4 is used to drive the reducer 5 to rotate, the reducer 5 drives the rotating connection member 3 to rotate and drives the first rotary encoder 6 and the turntable 2 to rotate, and the first rotary encoder 6 is used to detect the rotation angle data of the motor 4 and feed it back to an external controller.

[0026] In the embodiment of the present invention, the turntable 2 can rotate relative to the base 1, and the light hole 11 on the base 1 can be aligned with any objective lens assembly hole 21 on the turntable 2. In this way, when the objective lens is assembled in the objective lens assembly hole 21, an optical path can be formed between the light hole 11 and the objective lens to achieve the magnification function of the objective lens. In addition, the multiple objective lens assembly holes 21 can match different objective lenses, thereby meeting the needs of different magnification effects. In addition, motor 4, speed reducer 5, rotating connection member 3 and first rotary encoder 6 are coaxially arranged, wherein rotating connection member 3 and rotating disk 2 are fixedly connected, therefore, motor 4 drives speed reducer 5 to rotate, speed reducer 5 drives rotating connection member 3 to rotate, and drives first rotary encoder 6 and rotating disk 2 to rotate synchronously simultaneously, like this, first rotary encoder 6 can feed back the rotation angle data of motor 4 to external controller, controller can judge whether to reach the set position according to the difference of actual data and setting data, if not, then motor 4 continues to drive rotation, until the object lens assembly hole 21 as the target object on rotating disk 2 reaches the set target position, thereby can realize the positioning of object lens assembly hole 21, finally make object lens and light-clearing hole 11 just opposite.Therefore, embodiment one of the present invention can judge whether rotating disk 2 is rotated into place according to first rotary encoder 6, compared with the positioning mode of mechanical positioning in related art, embodiment one of the present invention can realize the full closed-loop feedback of position, and positioning accuracy is higher.In addition, in embodiment one of the present invention, by adding speed reducer 5, thus can obtain larger torque with less powerful motor 4, increase lifting load capacity.

[0027] Furthermore, the rotating connecting member 3 includes a connecting portion 31 fixedly assembled on the turntable 2 , and a connecting shaft 32 fixedly connected to the connecting portion 31 , and one end of the connecting shaft 32 away from the connecting portion 31 is connected to the first rotary encoder 6 .

[0028] Specifically, the connection between the connection part 31 and the connection shaft 32 can be T-shaped; the connection part 31 and the connection shaft 32 can be set as one piece, or can be separated and detachably connected. Among them, the connection part 31 is assembled and connected to the turntable 2, and the two are relatively fixed; the connection shaft 32 protrudes from the connection part 31 to be assembled and connected with the first rotary encoder 6. Therefore, the first rotary encoder 6 and the turntable 2 can be coaxially rotated through the connection part 31 and the connection shaft 32, so that it is possible to judge whether the turntable 2 is rotated to the right position through the first rotary encoder 6. Compared with the mechanical positioning method in the related art, the first embodiment of the present invention can realize full closed-loop feedback of the position, and the positioning accuracy is higher.

[0029] Furthermore, the first rotary encoder 6 has a first rotating portion 61 coaxially arranged with the connecting shaft 32 and a first detecting portion 62 arranged on the outer peripheral side of the first rotating portion 61; the first detecting portion 62 is used to detect the rotation angle data of the first rotating portion 61 and feed it back to the external controller.

[0030] Specifically, the first rotary encoder 6 includes a first rotating portion 61 and a first detecting portion 62, wherein the first rotating portion 61 is fixedly connected to the connecting shaft 32 of the rotating connector 3, and the first detecting portion 62 is arranged on the peripheral side of the first rotating portion 61. The turntable 2 is fixedly connected to the connecting portion 31, and the first rotating portion 61 is fixedly connected to the side of the connecting shaft 32 away from the turntable 2, that is, the first rotating portion 61 and the turntable 2 are arranged at both ends of the rotating connector 3, so that when the motor 4 drives the reducer 5 to rotate, the reducer 5 drives the rotating connector to rotate, and the rotating connector can drive the first rotating portion 61 and the turntable 2 to rotate synchronously, and the first detecting portion 62 is located on the peripheral side of the first rotating portion 61, and the first detecting portion 62 is relatively fixed. The first detecting portion 62 can detect the rotation angle of the first rotating portion 61, that is, detect the rotation angle of the motor 4, and feed back the rotation angle data to the external controller, so that the objective lens assembly hole 21 of the turntable 2 can be positioned, so that the objective lens assembly hole 21 can accurately reach the set position. Compared with the mechanical positioning method in the related art, the first embodiment of the present invention can achieve full closed-loop feedback of the position and has higher positioning accuracy.

[0031] Furthermore, an embedding groove is formed at one end of the connecting shaft 32 away from the connecting portion 31 , and the first rotating portion 61 has a protruding shaft protruding from the first detecting portion 62 , and the protruding shaft is embedded in the embedding groove.

[0032] Specifically, an embedding groove may be provided at the center of the connecting shaft 32, and a protruding shaft may be provided at the center of the first rotating portion 61. By embedding the protruding shaft in the embedding groove, the first rotating portion 61 and the connecting shaft 32 may be assembled and connected, so that the first rotating portion 61 and the connecting shaft 32 may be relatively fixed. In this way, when the connecting shaft 32 rotates, the first rotating portion 61 and the connecting portion 31 may rotate synchronously, and the connecting portion 31 may drive the turntable 2 to rotate synchronously, so that the positioning detection of the objective lens assembly hole 21 may be realized through the first rotary encoder 6.

[0033] Furthermore, the microscope objective turret also includes a coupling 7, which is arranged between the motor 4 and the reducer 5. The reducer 5 and the motor 4 rotate coaxially through the coupling 7. The connecting shaft 32 is sequentially passed through the reducer 5, the coupling 7, and the motor 4 from the connecting part 31 to be connected to the first rotary encoder 6.

[0034] Specifically, a coupling 7 is provided between the speed reducer 5 and the motor 4, so that the speed reducer 5 and the motor 4 can be coaxially rotated. The speed reducer 5, the coupling 7 and the motor 4 are all hollow structures, and the connecting shaft 32 passes through the speed reducer 5, the coupling 7 and the motor 4 from one end of the connecting portion 31 in sequence, and protrudes from the motor 4 and extends to be connected to the first rotary encoder 6, so as to be assembled and connected with the first rotary encoder 6. In this way, through the coupling 7, the motor 4 can drive the speed reducer 5 to rotate, thereby driving the connecting portion 31 and the connecting shaft 32 to drive, and then drive the rotating disk 2 and the first rotary encoder 6 to rotate synchronously, so as to realize the accurate positioning of the object lens assembly hole 21 of the rotating disk 2. In addition, by arranging the rotating connecting member 3 to be penetrated in the speed reducer 5, the coupling 7 and the motor 4, so that the two ends of the rotating connection are connected to the rotating disk 2 and the first rotary encoder 6 respectively, so that the internal space utilization rate of the device can be improved, the structure is more compact, and the size is reduced.

[0035] Furthermore, the microscope objective turret also includes a motor support 8 for accommodating the motor 4, and the motor support 8 is fixedly accommodated in the accommodating space 100; the motor support 8 has a first avoidance hole 801 and a second avoidance hole 802 along both ends of the connecting shaft 32, and the coupling 7 is at least partially located in the first avoidance hole 801 to be connected to the motor 4, and one end of the connecting shaft 32 close to the first rotary encoder 6 extends out through the second avoidance hole 802 to be assembled and connected with the first rotary encoder 6.

[0036] Specifically, the microscope objective turret also includes a motor support 8 for accommodating the motor 4 and fixedly assembled on the base 1, and the motor support 8 is accommodated in the accommodation space 100. The motor support 8 is respectively provided with a first avoidance hole 801 and a second avoidance hole 802 along the two ends of the connecting shaft 32, wherein at least part of the coupling 7 is located in the first avoidance hole 801, so that the coupling 7 can be connected to the motor 4, and the other end of the coupling 7 is connected to the reducer 5 outside the first avoidance hole 801; the connecting shaft 32 is sequentially penetrated by the reducer 5, the coupling 7 and the motor 4 from the connecting portion 31, and the connecting shaft 32 protrudes from the second avoidance hole 802, so that the connecting shaft 32 can be assembled and connected with the first rotary encoder 6 outside the second avoidance hole 802. Such an arrangement allows the rotating connector 3, the motor support 8, the motor 4, the reducer 5, and the coupling 7 to be stably accommodated in the accommodation space 100, which can improve the internal space utilization of the device, make the structure more compact, and reduce the size.

[0037] Furthermore, the motor support 8 includes a base 81 fixedly connected to the base 1 and a side wall 82 connected to one side of the base 81 and surrounding the outer peripheral side of the motor 4. The base 1 is provided with a groove 12, and the side of the base 81 facing away from the side wall 82 covers the groove 12 to enclose with the groove 12 to form an assembly space for accommodating the first rotary encoder 6.

[0038] Specifically, the motor support 8 includes a base 81 and a side wall 82, wherein the base 81 and the base 1 can be assembled and connected by screw connection, concave-convex fitting connection or welding, and the side wall 82 surrounds the outer peripheral side of the motor 4. In addition, the base 1 is also provided with a groove 12, the opening of the groove 12 faces the motor support 8, and the base 81 covers the groove 12, so that an assembly space can be enclosed between the base 81 and the groove 12, and the first rotary encoder 6 can be accommodated in the assembly space, so that the relative positions of the base 1, the first rotary encoder 6, the rotating connector 3, the motor support 8, the motor 4, the reducer 5, the coupling 7 and the turntable 2 can be determined.

[0039] Furthermore, the base 81 can be a bottom plate structure, and the side wall 82 can be a hollow annular column. Both ends of the side wall 82 have openings, wherein the opening at one end is a first avoidance hole 801, and the opening at the other end is covered by the side of the base 81 facing away from the groove 12. The second avoidance hole 802 is opened in the base 81, so that the connecting shaft 32 of the rotating connecting member 3 protrudes from the base 81 along the assembly space to be connected to the first rotary encoder 6.

[0040] Furthermore, a first limiting groove 13 opening toward the turntable 2 is formed on the outer peripheral side of the base 1, and a second limiting groove 22 opening toward the base 1 is formed on the outer peripheral side of the turntable 2. The first limiting groove 13 and the second limiting groove 22 are arranged opposite to each other and spaced apart to form a limiting space; the microscope objective turntable also includes a support member 10 arranged in the limiting space.

[0041] Specifically, the support member 10 is a rigid structure. The first limiting groove 13 and the second limiting groove 22 can be [-shaped, with openings facing each other, so that a limiting space is formed between the two limiting grooves, and there is a gap between the two limiting grooves, so that the limiting space includes the internal space defined by the two limiting grooves and the gap between the two limiting grooves, and the support member 10 is located in the limiting space. With such an arrangement, when the motor 4 drives the turntable 2 to rotate relative to the base 1, the support member 10 will not interfere with the relative rotation of the turntable 2 and the base 1, and can also provide a supporting force, so that the turntable 2 and the base 1 can stably rotate relative to each other under the support of the support member 10. Since the support member 10 is a rigid structure, compared with the structural method of using an inner ring bearing and an outer ring ball support in the related art, the turntable 2 will not generate a deflection angle in the radial direction when rotating, which can strictly ensure the position accuracy, improve the structural rigidity, and improve the structural bearing capacity.

[0042] Furthermore, the microscope objective turret further comprises a boss 14 fixedly connected to the side of the base 1 away from the turntable 2 , the boss 14 is provided with a mounting hole 141 communicating with the light through hole 11 , and the boss 14 is used to connect with an external device.

[0043] Specifically, the boss 14 can be a dovetail groove, which can be used to match external equipment to achieve connection between the whole device and the external equipment. Different external equipment can match different bosses 14, so that the microscope objective turret can match different external equipment, improving practicality.

[0044] Furthermore, a light-through sleeve for preventing stray light is provided on the light-through hole 11. The light-through sleeve can prevent stray light in the optical path. In addition, a boss 14 is provided at one end of the light-through sleeve away from the turntable 2.

[0045] Furthermore, the turntable 2 is provided with a plurality of adapter rings corresponding to the objective lens mounting holes 21 one by one, and different adapter rings are used to match different objective lenses, thereby meeting the requirements of various magnifications. When the objective lens needs to be replaced, the turntable 2 can be rotated so that the objective lens mounting hole 21 as the target object on the turntable 2 is rotated to a set position so that the objective lens mounting hole 21 can be directly opposite to the light-through hole 11, and then the required adapter ring and objective lens can be replaced.

[0046] See also Figures 3 to 6 , a second embodiment of the present invention provides a microscope objective turret. Similar to the first embodiment, the microscope objective turret of the second embodiment of the present invention also includes a base 1, a turntable 2 rotatably connected to the base 1 and forming a receiving space 100 with the base 1, the base 1 is provided with a light through hole 11, and the turntable 2 is provided with a plurality of objective lens assembly holes 21, and the light through hole 11 can be directly opposite to any objective lens assembly hole 21; the microscope objective turret also includes a rotating connection member 3 accommodated in the receiving space 100 and fixedly connected to the turntable 2, a motor 4 coaxially arranged with the rotating connection member 3, a reducer 5 coaxially and fixedly connected with the motor 4, and a first rotary encoder 6 coaxially arranged with the rotating connection member 3, the motor 4 is used to drive the reducer 5 to rotate, the reducer 5 drives the rotating connection member 3 to rotate and drives the first rotary encoder 6 and the turntable 2 to rotate, and the first rotary encoder 6 is used to detect the rotation angle data of the motor 4 and feed it back to an external controller.

[0047] In this way, the microscope objective turret of the second embodiment of the present invention can also determine whether the turntable 2 is rotated in place according to the first rotary encoder 6. Compared with the mechanical positioning method in the related art, the second embodiment of the present invention can achieve full closed-loop feedback of the position, and the positioning accuracy is higher. In addition, by adding a reducer 5 in the second embodiment of the present invention, a smaller power motor 4 can be used to obtain a larger torque, thereby increasing the lifting load capacity, which will not be described in detail here.

[0048] In addition, the specific structures of the rotating connector 3, the reducer 5 and the first rotary encoder 6 in the microscope objective turret of the second embodiment of the present invention can be the same as the specific structures of the first embodiment, so that the second embodiment has the same effect, which will not be repeated here.

[0049] Furthermore, the types of the motor 4 of the first embodiment and the motor 4 of the second embodiment may be the same or different. For example, in some possible implementations, the motor 4 of the first embodiment may be a stepper motor, and the motor 4 of the second embodiment may be a DC motor; in other possible implementations, the motors 4 of the first embodiment and the second embodiment may both be stepper motors or both may be DC motors.

[0050] Furthermore, the microscope objective lens turret of the second embodiment may also include a coupling 7, and the specific structure and appearance of the coupling 7 may be adapted to the adjustment of the motor 4, which will not be described in detail here.

[0051] In addition, the base 1 and the turntable 2 of the second embodiment can also form a receiving space 100, and the shapes of the receiving space 100 of the second embodiment and the receiving space 100 of the first embodiment can be the same or different, which can specifically depend on the shape of the turntable 2. Exemplarily, in some possible implementations, the turntable 2 of the first embodiment has a protruding structure on the side away from the base 1, and the protruding structure is cylindrical; the turntable 2 of the second embodiment has a protruding structure on the side away from the base 1, and the protruding structure is truncated. In some possible implementations, the turntables of the first embodiment and the second embodiment can both be tower-shaped.

[0052] Furthermore, the microscope objective turntable of the second embodiment may also include a support member 10, and the base 1 and the turntable 2 may also strictly ensure position accuracy through the first limiting groove 13, the second limiting groove 22 and the support member 10, thereby improving structural rigidity and structural bearing capacity, which will not be elaborated here.

[0053] Furthermore, the microscope objective lens turret of the second embodiment of the present invention may also include a motor support 8, and the specific structure and effect of the motor support 8 may be the same as the specific structure and effect of the motor support 8 of the first embodiment, which will not be described in detail here.

[0054] Furthermore, the microscope objective lens turret of the second embodiment can also be provided with a boss 14 on the base 1, a light-through sleeve on the light-through hole 11, and an adapter ring on the objective lens assembly hole 21, which has the same structure and effect and will not be elaborated here.

[0055] Furthermore, the difference from the first embodiment is that the microscope objective turret of the second embodiment also includes a second rotary encoder 9 arranged between the motor support 8 and the coupling 7, and the second rotary encoder 9 is used to detect the rotation angle data of the motor 4 and feed it back to the external controller.

[0056] Specifically, the objective lens turret of the microscope in the second embodiment is further provided with a second rotary encoder 9 near the motor 4. While the motor 4 drives the reducer 5 to rotate, it can also drive the second rotary encoder 9 to rotate, so that the rotation angle data of the motor 4 can be detected by the second rotary encoder 9 and fed back to the external controller, and the controller can judge whether the set position is reached according to the difference between the actual data and the set data, if not, the motor 4 continues to drive the rotation until the objective lens assembly hole 21 as the target object on the turntable 2 reaches the set target position, so that the positioning of the objective lens assembly hole 21 can be achieved.

[0057] In addition, the coupling 7 is at least partially located in the first avoidance hole 801 of the motor support 8. By arranging the second rotary encoder 9 between the motor support 8 and the coupling 7, the second rotary encoder 9 is also located in the first avoidance hole 801, and the first rotary encoder 6 is located outside the second avoidance hole 802 of the motor support 8. In this way, the first rotary encoder 6 and the second rotary encoder 9 are respectively located at both ends of the connecting shaft 32. Therefore, coarse positioning can be achieved by the second rotary encoder 9, and fine positioning can be achieved by the first rotary encoder 6, that is, a dual encoder positioning method can be realized, so that the turntable 2 can accurately reach the set position.

[0058] Furthermore, the second rotary encoder 9 includes a second rotating part 91 which is sleeved and fixed outside the coupling 7, and a second detecting part 92 which is arranged on the outer peripheral side of the second rotating part 91 and fixedly connected to the motor support 8. The second detecting part 92 is used to detect the rotation angle data of the second rotating part 91 and feed it back to the external controller.

[0059] Specifically, the second rotary encoder 9 includes a second rotating part 91 and a second detecting part 92, wherein the second rotating part 91 and the coupling 7 are relatively fixed, so that the motor 4 can drive the coupling 7, the second rotating part 91 and the turntable 2 to rotate synchronously, and the second detecting part 92 is fixedly connected to the motor support 8, so that the second detecting part 92 can detect the rotation angle data of the second rotating part 91, that is, detect the rotation angle data of the turntable 2, and feed it back to an external controller, and the controller can judge whether the set position is reached according to the difference between the actual data and the set data. If not, the motor 4 continues to drive the rotation until the objective lens assembly hole 21 on the turntable 2 as the target object reaches the set target position, thereby realizing the positioning of the objective lens assembly hole 21.

[0060] A third embodiment of the present invention provides a microscope, including a plurality of objective lenses and a microscope objective lens turret, wherein the plurality of objective lenses are detachably connected to a plurality of objective lens assembly holes 21 .

[0061] In the embodiment of the present invention, different objective lenses can be installed on the same objective lens turret, so as to meet the requirements of various magnifications. In addition, since the objective lens turret is provided with a first rotary encoder 6, when the objective lens needs to be replaced, when the turntable 2 is rotated, the position change can be detected by the first rotary encoder 6, so that the objective lens assembly hole 21 of the turntable 2 can be rotated to a preset position, thereby achieving high-precision positioning and meeting actual requirements.

[0062] The above are merely embodiments of the present invention. It should be pointed out that, for those skilled in the art, improvements can be made without departing from the creative concept of the present invention, but these all fall within the protection scope of the present invention.

Claims

1. A microscope objective lens turret, comprising a base, a turntable rotatably connected to the base and forming a receiving space with the base, the base is provided with a light-through hole, the turntable is provided with a plurality of objective lens mounting holes, the light-through hole can be directly opposite to any of the objective lens mounting holes; characterized in that: The microscope objective turret also includes a rotating connection member accommodated in the accommodation space and fixedly connected to the turntable, a motor coaxially arranged with the rotating connection member, a reducer coaxially arranged with the motor and fixedly connected, and a first rotary encoder coaxially arranged with the rotating connection member, wherein the motor is used to drive the reducer to rotate, the reducer drives the rotating connection member to rotate and drives the first rotary encoder and the turntable to rotate, and the first rotary encoder is used to detect the rotation angle data of the motor and feed it back to an external controller.

2. The microscope objective turret according to claim 1, characterized in that: The rotating connecting member includes a connecting portion fixedly assembled on the rotating disk, and a connecting shaft fixedly connected to the connecting portion, and one end of the connecting shaft away from the connecting portion is connected to the first rotary encoder.

3. The microscope objective lens turret according to claim 2, characterized in that: The first rotary encoder includes a first rotating portion coaxially arranged with the connecting shaft, and a first detecting portion arranged on the outer peripheral side of the first rotating portion; the first detecting portion is used to detect the rotation angle data of the first rotating portion and feed back the data to an external controller.

4. The microscope objective lens turret according to claim 2, characterized in that: The microscope objective turret also includes a coupling, which is arranged between the motor and the reducer. The reducer and the motor rotate coaxially through the coupling. The connecting shaft is sequentially passed through the reducer, the coupling, and the motor from the connecting part to be connected to the first rotary encoder.

5. The microscope objective lens turret according to claim 4, characterized in that: The microscope objective turret also includes a motor support for accommodating the motor, and the motor support is fixedly accommodated in the accommodating space; the motor support has a first avoidance hole and a second avoidance hole along both ends of the connecting shaft, the coupling is at least partially located in the first avoidance hole to be connected to the motor, and one end of the connecting shaft close to the first rotary encoder extends out through the second avoidance hole to be assembled and connected with the first rotary encoder.

6. The microscope objective lens turret according to claim 5, characterized in that: The motor support includes a base fixedly connected to the pedestal and a side wall connected to one side of the base and surrounding the outer circumference of the motor. The base is provided with a groove, and the side of the base facing away from the side wall covers the groove to enclose the groove to form an assembly space for accommodating the first rotary encoder.

7. The microscope objective lens turret according to claim 5, characterized in that: The microscope objective turret further comprises a second rotary encoder disposed between the motor support and the coupling, wherein the second rotary encoder is used to detect the rotation angle data of the motor and feed back the data to an external controller.

8. The microscope objective lens turret according to claim 7, characterized in that: The second rotary encoder includes a second rotating part sleeved and fixed outside the coupling, and a second detecting part arranged around the outer circumference of the second rotating part and fixedly connected to the motor support, wherein the second detecting part is used to detect the rotation angle data of the second rotating part and feed it back to an external controller.

9. The microscope objective lens turret according to claim 1, characterized in that: A first limiting groove opening toward the turntable is formed on the outer peripheral side of the base, and a second limiting groove opening toward the base is formed on the outer peripheral side of the turntable. The first limiting groove and the second limiting groove are arranged opposite to each other and spaced apart to form a limiting space; the microscope objective turret also includes a support member arranged in the limiting space.

10. A microscope, characterized in that: It comprises a plurality of objective lenses and a microscope objective lens turret as claimed in any one of claims 1 to 9, wherein the plurality of objective lenses are detachably connected to the plurality of objective lens assembly holes.

Images