Multi-objective switching device for microscope

Abstract

The utility model discloses a multi-objective switching device for a microscope, which comprises an objective module and a driving mechanism, the driving mechanism comprises a linear driving mechanism and a rotary driving mechanism, the linear driving mechanism is used for driving the objective module to move towards or away from the linear driving mechanism, and the rotary driving mechanism comprises a rotating shaft. The objective lens module comprises a plurality of objective lenses and objective lens mounting pieces; the objective lens mounting pieces are connected with the rotating shaft; the objective lens mounting part is mounted around the rotating shaft, one side, far away from the rotating shaft, of the objective lens mounting part is detachably connected with at least two objective lenses, and magnification times of the objective lenses are different. According to the multi-objective switching device for the microscope, the switching of the objective can be realized by utilizing the rotation of the rotating shaft, and the included angle between the objective can be adjusted according to the actual situation, so that the adjustment of the number of the objective installed by the objective installation piece can be realized, and the whole structure is compact and small, and can be applied to an inverted microscope system.

Description

Technical Field

[0001] The utility model relates to the field of microscopes, in particular to a multi-objective lens switching device for microscopes. Background Art

[0002] In order to observe biological tissue information of different sizes, a microscope is usually equipped with multiple objective lenses. In order to facilitate the switching of objective lenses, the traditional microscope system adopts a disc-type manual switching structure. Since the disc-type switching structure is large in size, it is difficult to realize the automation of the disc-type switching structure without changing the structure and volume of the microscope system.

[0003] There is also a linear electric objective lens switching device disclosed in the prior art, such as the Chinese patent with publication number CN201510363669.1, which includes a fixed plate, a switching plate, an objective lens mounting plate, and a non-standard objective lens; the linear electric objective lens switching device adopts a stacked embedded structure, the fixed plate is horizontally installed above the sample, the switching plate is below the fixed plate, the fixed plate and the switching plate are connected by a precision linear guide and a ball slider as a moving pair, the objective lens mounting plate is installed below the switching plate, and the non-standard objective lens is installed on the objective lens mounting plate; the linear electric objective lens switching device drives the objective lens mounting plate to switch along a straight line direction through a linear magnetic shaft motor, and each The non-standard objective lens corresponds to a position on the grating ruler. The upper computer determines the position of the switching plate through the grating ruler reader and controls the linear magnetic axis motor to switch the non-standard objective lens; the stator of the linear magnetic axis motor, two precision linear guides and the grating ruler reader are installed under the fixed plate, the stator and the grating ruler reader are located on both sides of the precision linear guide, and the stator and the grating ruler reader are partially embedded in the fixed plate; the magnetic axis of the linear magnetic axis motor, the grating ruler and the ball slider are installed above the switching plate, and the ball of the ball slider is embedded in the groove of the precision linear guide under the fixed plate, so that the switching plate and the fixed plate are constrained to each other in the vertical direction and can slide freely along the precision linear guide.

[0004] Although the linear electric objective lens switching device disclosed in the above patent reduces the space occupied by the switching device to a certain extent, it requires a larger linear motion space and is limited by the opening area of ​​the sample placement platform guide rail. This linear switching structure is not compatible with the inverted microscope system. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides a multi-objective lens switching device for a microscope.

[0006] A multi-objective lens switching device for a microscope, comprising an objective lens module and a driving mechanism, wherein the driving mechanism comprises a linear driving mechanism and a rotary driving mechanism, wherein the linear driving mechanism is used to drive the objective lens module to move toward or away from the linear driving mechanism, wherein the rotary driving mechanism comprises a rotary shaft, wherein the objective lens module comprises a plurality of objective lenses and an objective lens mounting member, wherein the objective lens mounting member is connected to the rotary shaft;

[0007] The objective lens mounting piece is mounted around the rotation axis, and at least two objective lenses are detachably connected to a side of the objective lens mounting piece away from the rotation axis, and the magnification of each objective lens is different.

[0008] Specifically, since the objective lens mount is installed around the rotating axis, the rotation of the rotating axis will cause the objective lens mount to rotate, and several objective lenses are installed on the objective lens mount, so the rotation of the objective lens mount can achieve the switching between objective lenses; in addition, the driving mechanism includes a linear driving mechanism and a rotating driving mechanism. With the cooperation of the two, both the switching of the objective lens and the adjustment of the distance between the objective lens and the sample can be achieved.

[0009] Preferably, the objective lens mounting member is an arc-shaped plate, and the distances from each point of the inner wall of the arc-shaped plate to the center of the rotation axis are equal.

[0010] Specifically, this structure is that the arc plate is arranged around the rotation axis, and the rotation axis is located at the center of the arc plate. This position arrangement combined with the structure of the arc plate can significantly reduce the structure of the objective lens module, thereby reducing the volume of the multi-objective lens switching device, so that the multi-objective lens switching device for a microscope provided by the utility model can be better applied to an inverted microscope system.

[0011] Preferably, the objective lens module further comprises at least one photoelectric sensor, wherein the photoelectric sensor is fixed to the rotating shaft and is used to detect the position of the objective lens mounting member.

[0012] Specifically, the arc plate is a non-closed structure. Therefore, during actual use, the rotation axis does not always rotate in one direction when the objective lens is switched. The rotation direction of the rotation axis needs to be adjusted in real time according to the position of the arc plate. Therefore, it is appropriate to set a photoelectric sensor to detect the position of the objective lens mounting part in real time.

[0013] Preferably, it also includes a control system, which is used to control the actions of the linear drive mechanism and the rotary drive mechanism. The control system is electrically connected to the photoelectric sensor and is used to receive data detected by the photoelectric sensor.

[0014] Specifically, under this structure, the switching of the objective lens and the adjustment of the position distance between the objective lens and the sample can be digitally monitored and automated, which can significantly improve the accuracy of objective lens switching and position movement and reduce the intensity of manual labor.

[0015] Preferably, there are two objective lenses, and the angle between the two objective lenses is 45°-135°, and the distance from each point of the inner wall of the arc plate to the center of the rotation axis is 5-10 mm.

[0016] More preferably, when there are two objective lenses, the angle between the two objective lenses is 90°.

[0017] Preferably, there are three objective lenses, and the angle between adjacent objective lenses is 15°-45°, and the distance between each point of the inner wall of the arc-shaped plate and the center of the rotation axis is 10-15 mm.

[0018] Preferably, the rotary drive mechanism is disposed above the linear drive mechanism, the objective lens module is connected to the rotary drive mechanism, and the linear drive mechanism drives the rotary drive mechanism and the objective lens module to move in a direction away from or close to the linear drive mechanism.

[0019] Specifically, this structure, that is, the objective lens module is connected to the linear drive mechanism through the rotary drive mechanism, makes the structure of the entire multi-objective lens switching device more compact, and adjusts the distance between the objective lens and the sample more conveniently and quickly.

[0020] Preferably, the rotation drive mechanism is a servo motor.

[0021] Compared with the prior art, the utility model is beneficial in that:

[0022] An objective lens mounting part installed around a rotating shaft is provided, and a plurality of objective lenses are mounted on the objective lens mounting part, and the rotating shaft is connected to the objective lens mounting part, so that the objective lenses can be switched by rotating the rotating shaft, and the angles between the objective lenses can be adjusted according to actual conditions, thereby achieving adjustment of the number of objective lenses installed on the objective lens mounting part, and the entire structure is compact and small, and can be applied to an inverted microscope system; in addition, since the driving mechanism includes a linear driving mechanism and a rotating driving mechanism, the multi-objective lens switching device for a microscope provided by the utility model can achieve both switching of the objective lenses and adjustment of the positions of the objective lenses, making the entire device more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A stereoscopic diagram of a multi-objective lens switching device for a microscope provided by the utility model (dual objective lens);

[0024] Figure 2 A stereoscopic diagram of a multi-objective lens switching device for a microscope provided by the utility model (three objective lenses);

[0025] Figure 3 A stereoscopic diagram of a multi-objective lens switching device for a microscope provided by the utility model (five objective lenses). DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] like Figure 1-3 As shown, a multi-objective lens switching device for a microscope includes an objective lens module and a driving mechanism, wherein the driving mechanism includes a linear driving mechanism 10 and a rotary driving mechanism 20, wherein the linear driving mechanism 10 is used to drive the objective lens module to move toward or away from the linear driving mechanism 10, wherein the rotary driving mechanism 20 includes a rotary shaft 21, and the objective lens module includes a plurality of objective lenses 31 and an objective lens mounting member 32, wherein the objective lens mounting member 32 is connected to the rotary shaft 21;

[0028] The objective lens mounting member 32 is mounted around the rotation axis 21 , and at least two objective lenses 31 are detachably connected to a side of the objective lens mounting member 32 away from the rotation axis 21 , and the magnification of each objective lens 31 is different.

[0029] Since the objective lens mounting member 32 is installed around the rotating shaft 21, the rotation of the rotating shaft 21 will cause the objective lens mounting member 32 to rotate. Several objective lenses 31 are mounted on the objective lens mounting member 32. Therefore, the rotation of the objective lens mounting member 32 can realize the switching between the objective lenses 31. In addition, the driving mechanism includes a linear driving mechanism 10 and a rotating driving mechanism 20. With the cooperation of the two, both the switching of the objective lens 31 and the adjustment of the distance between the objective lens 31 and the sample can be realized.

[0030] The objective lens mounting member 32 is an arc-shaped plate, and the distances from the center of the rotating shaft 21 to each point on the inner wall of the arc-shaped plate are equal.

[0031] This structure is that the arc plate is arranged around the rotating shaft 21, and the rotating shaft 21 is located at the center of the arc plate. This position arrangement combined with the structure of the arc plate can significantly reduce the structure of the objective lens module, thereby reducing the volume of the multi-objective lens switching device, so that the multi-objective lens switching device for a microscope provided by the utility model can be better suitable for an inverted microscope system.

[0032] The objective lens module further includes at least one photoelectric sensor 33 . The photoelectric sensor 33 is fixed to the rotating shaft 21 . The photoelectric sensor 33 is used to detect the position of the objective lens mounting member 32 .

[0033] The arc plate is a non-closed structure. Therefore, during actual use, when the objective lens 31 is switched, the rotating shaft 21 does not always rotate in one direction. The rotation direction of the rotating shaft 21 needs to be adjusted in real time according to the position of the arc plate. Therefore, it is appropriate to set a photoelectric sensor 33 to detect the position of the objective lens mounting part 32 in real time.

[0034] It also includes a control system, which is used to control the actions of the linear drive mechanism 10 and the rotary drive mechanism 20 . The control system is electrically connected to the photoelectric sensor 33 and is used to receive data detected by the photoelectric sensor 33 .

[0035] In this structure, the switching of the objective lens 31 and the adjustment of the position distance between the objective lens 31 and the sample can be digitally monitored and automated, which can significantly improve the accuracy of switching and position movement of the objective lens 31 and reduce the intensity of manual labor.

[0036] like Figure 1 As shown, there are two objective lenses 31, and the angle between the two objective lenses 31 is 45°-135°, and the distance from each point of the inner wall of the arc plate to the center of the rotation axis 21 is 5-10 mm;

[0037] Optimally, when there are two objective lenses 31 , the angle between the objective lenses 31 is 90°.

[0038] like Figure 2 As shown, there are three objective lenses 31, and the angle between adjacent objective lenses 31 is 15°-45°, and the distance between each point of the inner wall of the arc plate and the center of the rotation axis 21 is 10-15 mm.

[0039] like Figure 3 As shown, there can also be five objective lenses 31. Theoretically, when the diameter of the objective lens mounting member 32 is large enough, the number of objective lenses 31 can be arbitrarily selected as long as there is no interference between the objective lenses 31 and there is no interference between the objective lenses 31 and other structures.

[0040] The rotary drive mechanism 20 is disposed above the linear drive mechanism 10 , the objective lens module is connected to the rotary drive mechanism 20 , and the linear drive mechanism 10 drives the rotary drive mechanism 20 and the objective lens module to move away from or close to the linear drive mechanism 10 .

[0041] This structure, that is, the objective lens module is connected to the linear drive mechanism 10 via the rotary drive mechanism 20, makes the structure of the entire multi-objective lens switching device more compact, and makes it more convenient and quick to adjust the distance between the objective lens 31 and the sample.

[0042] The rotation drive mechanism 20 is a servo motor.

Claims

1. A multi-objective lens switching device for a microscope, comprising an objective lens module and a driving mechanism, characterized in that: The driving mechanism includes a linear driving mechanism and a rotary driving mechanism, wherein the linear driving mechanism is used to drive the objective lens module to move toward or away from the linear driving mechanism, the rotary driving mechanism includes a rotary shaft, and the objective lens module includes a plurality of objective lenses and an objective lens mounting member, wherein the objective lens mounting member is connected to the rotary shaft; The objective lens mounting piece is mounted around the rotation axis, and at least two objective lenses are detachably connected to a side of the objective lens mounting piece away from the rotation axis, and the magnification of each objective lens is different.

2. The multi-objective lens switching device for a microscope according to claim 1, characterized in that: The objective lens mounting member is an arc-shaped plate, and the distances from each point of the inner wall of the arc-shaped plate to the center of the rotation axis are equal.

3. The multi-objective lens switching device for a microscope according to claim 2, characterized in that: The objective lens module further comprises at least one photoelectric sensor, which is fixed to the rotating shaft and is used to detect the position of the objective lens mounting member.

4. The multi-objective lens switching device for a microscope according to claim 3, characterized in that: It also includes a control system, which is used to control the actions of the linear drive mechanism and the rotary drive mechanism. The control system is electrically connected to the photoelectric sensor and is used to receive data detected by the photoelectric sensor.

5. The multi-objective lens switching device for a microscope according to claim 2, characterized in that: There are two objective lenses, and the angle between the two objective lenses is 45°-135°.

6. The multi-objective lens switching device for a microscope according to claim 5, characterized in that: When there are two objective lenses, the distance between each location of the inner wall of the arc-shaped plate and the center of the rotation axis is 5-10 mm.

7. The multi-objective lens switching device for a microscope according to claim 2, characterized in that: There are three objective lenses, and the angle between adjacent objective lenses is 15°-45°.

8. The multi-objective lens switching device for a microscope according to claim 7, characterized in that: When there are three objective lenses, the distance between each location of the inner wall of the arc-shaped plate and the center of the rotation axis is 10-15 mm.

9. The multi-objective lens switching device for a microscope according to claim 1, characterized in that: The rotary drive mechanism is arranged above the linear drive mechanism, the objective lens module is connected to the rotary drive mechanism, and the linear drive mechanism drives the rotary drive mechanism and the objective lens module to move in a direction away from or close to the linear drive mechanism.

10. The multi-objective lens switching device for a microscope according to claim 1, characterized in that: The rotation driving mechanism is a servo motor.

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