CN221225145U

CN221225145U - Automatic focusing device for microscope

Info

Publication number: CN221225145U
Application number: CN202322991986.0U
Authority: CN
Inventors: 秦亚强; 降雨强; 方雅亮; 赵宇; 杨新航
Original assignee: Beijing Jingzhe Biotechnology Co ltd
Current assignee: Beijing Jingzhe Biotechnology Co ltd
Priority date: 2023-11-06
Filing date: 2023-11-06
Publication date: 2024-06-25
Anticipated expiration: 2033-11-06

Abstract

The utility model belongs to the field of machinery, and discloses an automatic focusing device of a microscope, which comprises the following components: the device comprises a base, a horizontal positioning block, a vertical positioning block, a motor, a transmission assembly, a driving gear and a driven gear, wherein the base is arranged close to a focusing knob of a microscope; the horizontal positioning block is detachably fixed on the base; the vertical positioning block is detachably fixed on the horizontal positioning block; the motor is arranged on the vertical positioning block; the transmission component is connected with the shaft of the motor; the driving gear is connected with the transmission assembly; the driven gear is arranged on a focusing knob of the microscope; the driving gear is meshed with the driven gear. In the embodiment of the utility model, the motor is arranged to drive the focusing knob, so that real-time focusing can be realized, and the high cleanliness of the sample pool is ensured.

Description

Automatic focusing device for microscope

Technical Field

The present utility model relates generally to the field of mechanical technology. More particularly, the present utility model relates to an autofocus apparatus for a microscope.

Background

The existing medical clinical detection adopts different microscopic detection methods to detect the concentration, activity and morphology of sperm respectively.

The motility of the sperms can be completed manually or by computer assistance, the movement speed of the sperms is extremely high and is tens of micrometers/second, and continuous observation and accurate observation are required. In order to obtain a clear image, a focusing knob of a microscope is required to be adjusted to achieve an ideal focal length, so that a clear image of sperm movement in a sample cell is obtained.

In the process of observing sperm movement, the interference of external factors needs to be effectively eliminated. External interference factors include: the microscope is focused through manual operation, so that the working efficiency is low and real-time tracking cannot be performed. During manual focusing, the focusing knob is closer to the sample pool, so that high cleanliness of the sample pool cannot be guaranteed.

In view of the foregoing, there is a need for an automatic focusing apparatus for a microscope, which reduces interference to the observation process caused by focusing operation of the microscope, achieves real-time focusing, and ensures high cleanliness of a sample cell.

Disclosure of Invention

To solve at least one or more of the technical problems mentioned above, embodiments of the present utility model provide an autofocus device for a microscope, including: the device comprises a base 1, a horizontal positioning block 2, a vertical positioning block 3, a motor 4, a transmission assembly 5, a driving gear 6 and a driven gear 7, wherein the base 1 is arranged close to a focusing knob of a microscope; the horizontal positioning block 2 is detachably fixed on the base 1; the vertical positioning block 3 is detachably fixed on the horizontal positioning block 2; the motor 4 is arranged on the vertical positioning block 3; the transmission assembly 5 is connected with the shaft of the motor 4; the driving gear 6 is connected with the transmission assembly 5; the driven gear 7 is arranged on a focusing knob of the microscope; the driving gear 6 is meshed with the driven gear 7.

According to one embodiment of the utility model, the base 1 is provided with a first positioning slot 11 extending parallel to the rotation face of the focusing knob of the microscope; the base 1 is fixed by a first positioning groove 11; the first positioning groove 11 is provided in a direction such that the position can be adjusted in the horizontal direction when the base 1 is fixed.

According to one embodiment of the utility model, the first positioning groove 11 comprises two mutually parallel through grooves, which are respectively positioned at one end of the base 1 close to the focusing knob of the microscope and one end of the base remote from the focusing knob of the microscope.

According to one embodiment of the utility model, the base 1 is provided with at least two horizontal positioning holes 12 arranged in a direction perpendicular to the rotation plane of the focusing knob of the microscope; the horizontal positioning block 2 is provided with a second positioning groove 21 extending in a direction perpendicular to the rotation surface of the focusing knob of the microscope; the spacing between at least two horizontal positioning holes 12 is the same as the length of the second positioning groove 21; the fixed structure of the horizontal positioning block 2 and the base 1 is as follows: the horizontal positioning holes 12 and the second positioning grooves 21 corresponding to the passing positions of the bolts are used for fixing.

According to one embodiment of the utility model, the second positioning groove 21 comprises two mutually parallel through grooves respectively positioned at two ends of the horizontal positioning block 2 in a direction parallel to the rotating surface of the focusing knob of the microscope; the horizontal positioning holes 12 include two rows and are provided corresponding to the second positioning grooves 21.

According to one embodiment of the utility model, the horizontal positioning block 2 is provided with a receiving groove 22 extending vertically; the bottom of the vertical positioning block 3 is provided with a fixing part 31 which is matched with the accommodating groove 22 in size, and the top of the vertical positioning block is provided with a bearing part 32 which is larger than the accommodating groove 22; the accommodation groove 22 is provided with a vertical positioning hole 23; the fixing portion 31 is provided with a third positioning groove 33 extending vertically; the fixing part 31 is embedded in the accommodating groove 22, and the third positioning groove 33 corresponds to the vertical positioning hole 23; the fixing structure of the vertical positioning block 3 and the horizontal positioning block 2 is as follows: the vertical positioning holes 23 and the third positioning grooves 33 corresponding to the passing positions of the bolts are used for fixing.

According to one embodiment of the utility model, the third positioning groove 33 is provided with two mutually parallel; the vertical positioning hole 23 is provided corresponding to the third positioning groove 33.

According to one embodiment of the utility model, the vertical positioning block 3 is provided with a mounting hole 34 in the direction of the rotation face of the focusing knob of the vertical microscope; the motor 4 is fixed on the vertical positioning block 3 through a mounting hole 34; the shaft of the motor 4 extends towards the focusing knob of the microscope; the transmission assembly 5 is connected to the end of the shaft of the motor 4.

According to one embodiment of the utility model, the transmission assembly 5 comprises a clutch and a coupling connected to each other.

According to one embodiment of the utility model, the motor 4 comprises a remote control for controlling the start-stop and rotation modes of the motor.

In the embodiment of the utility model, real-time focusing can be realized by arranging the motor to drive the focusing knob. The motor can adjust the position along the direction of approaching to or separating from the focusing knob of the microscope by arranging the horizontal positioning block. By arranging the vertical positioning block, the motor can adjust the position in the vertical direction. The size of the top of the vertical positioning block is larger than that of the accommodating groove, so that the lowest position of the motor can be limited. The transmission mechanism comprises a clutch and a coupler, so that the power transmission between the motor and the driving gear is controllable. Through setting up remote control unit, the power take off of remote control motor can realize operating personnel and sample cell keep the interval, ensures the high cleanliness factor of sample cell.

Drawings

The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present utility model will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. In the drawings, embodiments of the utility model are illustrated by way of example and not by way of limitation, and like reference numerals refer to similar or corresponding parts and in which:

FIG. 1 illustrates an exemplary application scenario of an embodiment of the present utility model;

FIG. 2 illustrates an exploded view of an autofocus device for a microscope in accordance with some embodiments of the present utility model;

FIG. 3 illustrates a side view schematic of an autofocus arrangement for a microscope in accordance with some embodiments of the utility model;

FIG. 4 illustrates a schematic top view of an autofocus apparatus for a microscope in accordance with some embodiments of the present utility model;

Fig. 5 illustrates a schematic view of a side of an autofocus apparatus for a microscope near a focus knob in accordance with some embodiments of the utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be understood that the terms "comprises" and "comprising," when used in this specification and in the claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in the specification and claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the present specification and claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

As used in this specification and the claims, the term "if" may be interpreted as "when..once" or "in response to a determination" or "in response to detection" depending on the context. Similarly, the phrase "if a determination" or "if a [ described condition or event ] is detected" may be interpreted in the context of meaning "upon determination" or "in response to determination" or "upon detection of a [ described condition or event ]" or "in response to detection of a [ described condition or event ]".

Specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

Fig. 1 shows a microscope. The automatic focusing device of the microscope in the embodiment of the utility model can be suitable for microscopes of different types, and the motor 4 drives the focusing knob to perform real-time focusing.

Fig. 2 illustrates an exploded view of an autofocus device for a microscope in accordance with some embodiments of the present utility model.

Fig. 3 illustrates a side view schematic of an autofocus arrangement for a microscope in accordance with some embodiments of the utility model.

Fig. 4 illustrates a schematic top view of an autofocus arrangement for a microscope in accordance with some embodiments of the present utility model.

As shown in fig. 2 to 5, the auto-focusing apparatus for a microscope includes: the device comprises a base 1, a horizontal positioning block 2, a vertical positioning block 3, a motor 4, a transmission assembly 5, a driving gear 6 and a driven gear 7, wherein the base 1 is arranged close to a focusing knob of a microscope; the horizontal positioning block 2 is detachably fixed on the base 1; the vertical positioning block 3 is detachably fixed on the horizontal positioning block 2; the motor 4 is arranged on the vertical positioning block 3; the transmission assembly 5 is connected with the shaft of the motor 4; the driving gear 6 is connected with the transmission assembly 5; the driven gear 7 is arranged on a focusing knob of the microscope; the driving gear 6 is meshed with the driven gear 7.

The base 1 is mounted on a table together with the microscope in fig. 1, and the base 1 may be located on the same plane as the microscope or on a different plane. The base 1 is plate-shaped and can provide relatively stable support. The "the base 1 is close to the focusing knob of the microscope" means that the base 1 is positioned on one side of the microscope where the focusing knob is arranged, so that power transmission between the motor 4 and the focusing knob is facilitated.

The horizontal positioning block 2 is fixed on the base 1, and the term "detachably fixed" refers to that the horizontal positioning block 2 is fixedly connected with the base 1 when the motor 4 is in a working state. The horizontal positioning block 2 may be fixed at a plurality of positions in the horizontal direction on the base 1. The horizontal positioning block 2 can be moved in a detachable and refastenable manner.

The vertical positioning block 3 is detachably fixed on the horizontal positioning block 2, which means that the vertical positioning block 3 is fixedly connected with the horizontal positioning block 2 when the motor 4 is in a working state. The vertical positioning block 3 may be fixed at a plurality of positions in the vertical direction on the horizontal positioning block 2. The vertical positioning block 3 can be moved by means of detachment and re-fixation.

The motor 4 is fixed on the vertical positioning block 3, so that the position of the motor 4 is fixed through the base 1, the horizontal positioning block 2 and the vertical positioning block. The position of the motor 4 is fixed in alignment with the focus knob.

The shaft of the motor 4 outputs power, the power is transmitted to the driving gear 6 through the transmission assembly 5, the power is transmitted to the driven gear 7 again through the meshing of the driving gear 6 and the driven gear 7, and the driven gear 7 is fixedly arranged on the focusing knob, so that the power output of the motor 4 to the focusing knob is realized.

In the embodiment of the utility model, the motor 4 drives the focusing knob, so that real-time focusing can be realized, an operator can keep a distance from a sample pool of the microscope, and external interference is reduced. The position of the motor 4 is fixed through the base 1, the horizontal positioning block 2 and the vertical positioning block, so that the power loss of the motor 4 can be reduced. The accuracy of focusing can be adjusted by setting a gear ratio through gear transmission.

As shown in fig. 1, the base 1 is provided with a first positioning groove 11 extending parallel to the rotation surface of the focus knob of the microscope; the base 1 is fixed by a first positioning groove 11; the first positioning groove 11 is provided in a direction such that the position can be adjusted in the horizontal direction when the base 1 is fixed.

The first positioning groove 11 formed on the base 1 is a through groove, i.e. penetrates through the upper surface and the lower surface of the base 1. The base 1 is mounted on the operating platform by means of a first positioning slot 11. For example: the bolt that sets up vertical extension on operation platform is fixed, places base 1 on operation platform for continue upwards to extend after the bolt passes first constant head tank 11, set up the nut of down precession on the bolt, the size of nut is greater than the size of first constant head tank 11, when the nut constantly precesses to pressing the upper surface of base 1, can fix base 1 on operation platform.

In the embodiment of the present utility model, it is necessary to correspond the motor 4 to the focus knob, and the base 1 has a function of adjusting the position in the horizontal direction. By adjusting the relative position of the first positioning groove 11 and the bolt passing through the first positioning groove 11, the position of the base 1 can be adjusted in the horizontal direction extending parallel to the rotation surface of the focusing knob of the microscope, thereby realizing the function of adjusting the position of the motor 4, so that the motor 4 is aligned with the focusing knob, that is, the driving gear 6 and the driven gear 7 are meshed.

According to one embodiment of the utility model, the first positioning groove 11 comprises two mutually parallel through grooves, which are respectively positioned at one end of the base 1 close to the focusing knob of the microscope and one end of the base far from the focusing knob of the microscope.

The both ends of base 1 all set up first constant head tank 11, on the one hand can be with the fixed more firm of base 1, on the other hand, can avoid base 1 to rotate on the horizontal plane, keep the stability of its position.

As shown in fig. 1 and 3, the base 1 is provided with at least two horizontal positioning holes 12 arranged in a direction perpendicular to a rotation surface of a focus knob of the microscope; the horizontal positioning block 2 is provided with a second positioning groove 21 extending in a direction perpendicular to the rotation surface of the focusing knob of the microscope; the spacing between at least two horizontal positioning holes 12 is the same as the length of the second positioning groove 21; the fixed structure of the horizontal positioning block 2 and the base 1 is as follows: the horizontal positioning holes 12 and the second positioning grooves 21 corresponding to the passing positions of the bolts are used for fixing.

The horizontal positioning block 2 is fixed by the correspondence of the second positioning groove 21 and the horizontal positioning hole 12. For example: the two ends of the bolt are respectively screwed into and pressed by nuts through the horizontal positioning holes 12 and the second positioning grooves 21 corresponding to the passing positions of the bolt. For another example, an internal thread is provided in the horizontal positioning hole 12 and is engaged with the external thread of the bolt, one end of the bolt is fixed in the horizontal positioning hole 12 by screwing the bolt, the other end of the bolt passes through the second positioning groove 21, and the horizontal positioning block 2 is fixed by screwing the nut.

The horizontal positioning holes 12 are arranged in a direction perpendicular to the rotation surface of the focus knob of the microscope so that the horizontal fixing block can adjust the fixed position toward the direction approaching to the focus knob or away from the focus knob, facilitating alignment of the motor 4 with the focus knob.

The number of the horizontal positioning holes 12 is plural, and the distance between at least two horizontal positioning holes 12 is the same as the length of the second positioning groove 21, so that two bolts can be arranged, and the two bolts respectively penetrate through the two ends of the second positioning groove 21, so that the horizontal positioning block 2 is firmly fixed on the base 1.

The horizontal positioning blocks 2 are respectively fixed from two ends, so that the stability of the horizontal positioning blocks 2 can be further enhanced. The through groove means that the second positioning groove 21 penetrates the upper surface and the lower surface of the horizontal fixing block.

As shown in fig. 1 and 5, according to one embodiment of the present utility model, the horizontal positioning block 2 is provided with a receiving groove 22 extending in a vertical direction; the bottom of the vertical positioning block 3 is provided with a fixing part 31 which is matched with the accommodating groove 22 in size, and the top of the vertical positioning block is provided with a bearing part 32 which is larger than the accommodating groove 22; the accommodation groove 22 is provided with a vertical positioning hole 23; the fixing portion 31 is provided with a third positioning groove 33 extending vertically; the fixing part 31 is embedded in the accommodating groove 22, and the third positioning groove 33 corresponds to the vertical positioning hole 23; the fixing structure of the vertical positioning block 3 and the horizontal positioning block 2 is as follows: the vertical positioning holes 23 and the third positioning grooves 33 corresponding to the passing positions of the bolts are used for fixing.

The fixing portion 31 and the bearing portion 32 of the vertical positioning block 3 are integrated and divided into two areas according to different functions, as shown by the dashed line frame in fig. 5, and the dividing standard of the two areas is the size of the dimension. The fixing block can be inserted into the accommodating groove 22 of the horizontal positioning block 2, and when the vertical positioning block 3 is located at the lowest position, the notch position of the accommodating groove 22 is abutted with the bottom of the bearing part 32, so that the vertical positioning block 3 is limited to move downwards continuously.

The receiving groove 22 may be provided as a half groove as in fig. 1, or may be provided as a groove recessed downward from the upper surface of the horizontal fixing block.

As shown in fig. 1 and 5, the wall of the receiving groove 22 is provided with a vertical positioning hole 23 extending in the lateral direction, and a bolt extending in the lateral direction may be provided to be mounted in the vertical positioning hole 23. The fixing portion 31 is provided with a third positioning groove 33 extending vertically, the third positioning groove 33 penetrates through the vertical fixing block in the transverse direction, the position of the third positioning groove 33 corresponds to the vertical positioning hole 23, a bolt installed in the vertical positioning hole 23 penetrates through the third positioning groove 33 to extend, a nut is arranged on the bolt to be screwed towards the vertical positioning hole 23, and therefore the fixing portion 31 can be pressed in the accommodating groove 22. By adjusting the relative position of the third positioning groove 33 and the vertical positioning hole 23, the fixed height of the vertical positioning block 3 in the vertical direction can be adjusted, so that the position of the motor 4 in the vertical direction can be adjusted, and the motor is convenient to align with the focusing knob.

According to one embodiment of the utility model, the third positioning groove 33 is provided with two mutually parallel; the vertical positioning hole 23 is provided corresponding to the third positioning groove 33. By providing two third positioning grooves 33 parallel to each other, the vertical positioning block 3 can be fixed more firmly.

As shown in fig. 1 and 5, the vertical positioning block 3 is provided with a mounting hole 34 in the direction of the rotation surface of the focus knob of the vertical microscope; the motor 4 is fixed on the vertical positioning block 3 through a mounting hole 34; the shaft of the motor 4 extends towards the focusing knob of the microscope; the transmission assembly 5 is connected to the end of the shaft of the motor 4.

In the bearing portion 32 of the vertical positioning block 3, there are provided mounting positions of the motor 4 including mounting holes 34 for fixing the housing of the motor 4 and bolt holes for fixing the housing of the motor 4 with the bearing portion 32 of the vertical positioning block 3. The shaft of the motor 4 extends through the mounting hole 34 toward the focus knob to align the focus knob.

As shown in fig. 3, the transmission assembly 5 includes a clutch and a coupling connected to each other according to an embodiment of the present utility model.

The motor 4 and the driving gear 6 are connected through a clutch and a coupling, and the specific connection relation is the prior art, so the utility model is not limited. In the utility model, by arranging the clutch, a power transmission channel between the motor 4 and the driving gear 6 can be cut off or connected, so that the power can be conveniently and accurately output.

According to one embodiment of the utility model, the motor 4 comprises a remote control for controlling the start-stop and rotation modes of the motor 4.

The remote control device may be connected to the main body of the motor 4 in a wireless or wired manner, to control the rotation speed, forward rotation, reverse rotation, etc. of the motor 4. The motor 4 may be a motor 4 with a built-in software program control, and the motor 4 may be rotated forward or backward by a pulse signal. The remote control device and the program control of the motor 4 can be realized by the prior art, and the improvement of the utility model is not limited to this and will not be described in detail.

The driven gear 7 can be fixedly connected with the focusing knob in various modes such as welding, bonding, riveting and the like, power transmission is carried out through meshing between the driving gear 6 and the driven gear 7, and the gear ratio can be set so as to meet the precision of microscope focusing, and compared with manual focusing, the automatic focusing is more accurate.

In the embodiment of the utility model, the motor 4 provides power to drive the focusing knob, and the base 1, the horizontal fixing block and the vertical fixing block provide stable support, so that automatic focusing can be realized. The base 1, the horizontal fixing block and the vertical fixing block provide position-adjustable support, so that the automatic focusing device can be suitable for microscopes of different types and sizes.

While various embodiments of the present utility model have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous modifications, changes, and substitutions will occur to those skilled in the art without departing from the spirit and scope of the utility model. It should be understood that various alternatives to the embodiments of the utility model described herein may be employed in practicing the utility model. The appended claims are intended to define the scope of the utility model and are therefore to cover all equivalents or alternatives falling within the scope of these claims.

Claims

1. An autofocus apparatus for a microscope, comprising:

A base (1), a horizontal positioning block (2), a vertical positioning block (3), a motor (4), a transmission component (5), a driving gear (6) and a driven gear (7),

The base (1) is arranged close to a focusing knob of the microscope;

The horizontal positioning block (2) is detachably fixed on the base (1);

The vertical positioning block (3) is detachably fixed on the horizontal positioning block (2);

the motor (4) is arranged on the vertical positioning block (3);

The transmission assembly (5) is connected with the shaft of the motor (4);

The driving gear (6) is connected with the transmission assembly (5);

the driven gear (7) is arranged on a focusing knob of the microscope;

The drive gear (6) is meshed with the driven gear (7).

2. The autofocus device of claim 1, wherein the focus adjustment mechanism is configured to automatically focus the lens of the lens,

The base (1) is provided with a first positioning groove (11) extending parallel to the rotating surface of the focusing knob of the microscope;

the base (1) is fixed through the first positioning groove (11);

The first positioning groove (11) is arranged in a direction which enables the position of the base (1) to be adjusted along the horizontal direction when the base is fixed.

3. The autofocus device of claim 2, wherein the focus adjustment mechanism is configured to automatically focus the lens of the lens,

The first positioning groove (11) comprises two through grooves which are parallel to each other, and the through grooves are respectively positioned at one end of the base (1) which is close to the focusing knob of the microscope and one end which is far away from the focusing knob of the microscope.

4. The autofocus device of claim 1, wherein the focus adjustment mechanism is configured to automatically focus the lens of the lens,

At least two horizontal positioning holes (12) which are arranged along the direction vertical to the rotating surface of the focusing knob of the microscope are formed in the base (1);

The horizontal positioning block (2) is provided with a second positioning groove (21) extending along the direction perpendicular to the rotating surface of the focusing knob of the microscope;

The distance between at least two horizontal positioning holes (12) is the same as the length of the second positioning groove (21);

the fixing structure of the horizontal positioning block (2) and the base (1) is that: the horizontal positioning holes (12) and the second positioning grooves (21) which are corresponding to the passing positions of the bolts are used for fixing.

5. The autofocus device of claim 4, wherein,

The second positioning groove (21) comprises two through grooves which are parallel to each other and are respectively positioned at two ends of the horizontal positioning block (2) in the direction parallel to the rotating surface of the focusing knob of the microscope;

The horizontal positioning holes (12) comprise two rows and are arranged corresponding to the second positioning grooves (21).

6. The autofocus device of claim 1, wherein the focus adjustment mechanism is configured to automatically focus the lens of the lens,

The horizontal positioning block (2) is provided with a containing groove (22) extending along the vertical direction;

the bottom of the vertical positioning block (3) is provided with a fixing part (31) matched with the accommodating groove (22), and the top of the vertical positioning block is provided with a bearing part (32) larger than the accommodating groove (22);

the accommodating groove (22) is provided with a vertical positioning hole (23);

The fixing part (31) is provided with a third positioning groove (33) extending vertically;

The fixing part (31) is embedded in the accommodating groove (22), and the third positioning groove (33) corresponds to the vertical positioning hole (23);

The fixing structure of the vertical positioning block (3) and the horizontal positioning block (2) is as follows: and the vertical positioning holes (23) and the third positioning grooves (33) which are corresponding to the passing positions of the bolts are used for fixing.

7. The autofocus device of claim 6, wherein,

The third positioning groove (33) is provided with two mutually parallel positioning grooves;

the vertical positioning holes (23) are arranged corresponding to the third positioning grooves (33).

8. The autofocus device of claim 1, wherein the focus adjustment mechanism is configured to automatically focus the lens of the lens,

The vertical positioning block (3) is provided with a mounting hole (34) which is vertical to the direction of the rotating surface of the focusing knob of the microscope;

the motor (4) is fixed on the vertical positioning block (3) through the mounting hole (34);

The shaft of the motor (4) extends towards the focusing knob of the microscope;

The transmission assembly (5) is connected to the end of the shaft of the motor (4).

9. The autofocus device of claim 1, wherein the focus adjustment mechanism is configured to automatically focus the lens of the lens,

The transmission assembly (5) comprises a clutch and a coupling which are connected with each other.

10. The autofocus device of claim 1, wherein the focus adjustment mechanism is configured to automatically focus the lens of the lens,

The motor (4) comprises a remote control device for controlling the start and stop of the motor and the rotation mode.