Ophthalmoscope module and operating microscope

Abstract

The invention belongs to the technical field of microscopes, and discloses an ophthalmoscope module and an operating microscope. The ophthalmoscope module comprises a fixed bottom plate, a fundus lens main body module and a front lens module. The fundus lens body module is in sliding connection with the fixed bottom plate in the first direction, and the front lens module is fixedly connected to the fundus lens body module through the holder assembly. The fundus lens body module comprises a focusing lens set and a linkage supporting mechanism, and when the fundus lens body module slides along the fixed bottom plate, the linkage supporting mechanism synchronously drives the focusing lens set to move in the second direction. When the ophthalmoscope module and the operating microscope are converted from the anterior segment mode to the posterior segment mode, the focusing lens group can be adjusted to move along the second direction at the same time, so that the focusing lens group moves to the working position, and the required imaging effect is met.

Description

Technical Field

[0001] The present invention relates to the technical field of microscopes, and in particular to an ophthalmoscope module and an operating microscope. Background Art

[0002] Optical observation devices, such as operating microscopes, generally include a head part and an ophthalmoscope module. The head part includes a main microscope lens body and an objective lens. The main microscope lens body is provided with an OCT convex structure, and the objective lens is arranged on the main microscope lens body and on one side of the OCT convex structure. The ophthalmoscope module is slidably mounted at the bottom of the OCT convex structure. Due to the limitations and requirements of the optical path setting, the heights of the objective lens and the OCT convex structure are different, resulting in the bottoms of the two not being flush.

[0003] On the other hand, since different manufacturers will be equipped with ophthalmoscope modules designed and produced by themselves, these ophthalmoscope modules can only be well adapted to the ophthalmic operating microscopes of their own manufacturers. However, there are still some situations. For example, the ophthalmic operating microscope of manufacturer A needs to be adapted to the ophthalmoscope module of manufacturer B. Since the distance between the objective lens and the focusing component of the ophthalmoscope module is a fixed initial value, in order to adapt to the head structures of different manufacturers, it is necessary to adjust the position of the focusing lens group of the ophthalmoscope module in the vertical direction. Summary of the Invention

[0004] The purpose of the present invention is to provide an ophthalmoscope module and an operating microscope, aiming to solve the problem that the position of the focusing lens group of the ophthalmoscope module in the vertical direction cannot be adjusted in the prior art. When the ophthalmoscope module and the operating microscope are converted from the anterior segment mode to the posterior segment mode, the movement of the focusing lens group in the second direction can be adjusted simultaneously, so that the focusing lens group moves to the working position to meet the required imaging effect.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] An ophthalmoscope module, comprising:

[0007] A fixed bottom plate;

[0008] An ophthalmoscope head main body module, including a focusing lens group and a linkage support mechanism;

[0009] A front lens module, the front lens module is fixedly connected to the ophthalmoscope head main body module through a cage assembly;

[0010] Wherein, the ophthalmoscope head main body module is slidably connected to the fixed bottom plate in a first direction; when the ophthalmoscope head main body module slides along the fixed bottom plate, the linkage support mechanism synchronously drives the focusing lens group to move in a second direction.

[0011] In some possible embodiments, the linkage support mechanism includes a linkage rod, which includes two branch rods fixed at an angle and a connecting shaft, wherein one branch rod is transmission-connected to the focusing lens group via a sleeve ring, and a first limiting component is fixedly provided at the end of the other branch rod, and a second limiting component corresponding to the first limiting component is provided on the fixed base plate.

[0012] In some possible embodiments, the second limiting component is a guide groove, which includes a straight groove portion and an arcuate groove portion that are interconnected, the arcuate groove portion is arranged close to the focusing lens group, the straight groove portion is arranged away from the focusing lens group, and the extension direction of the straight groove portion is parallel to the first direction.

[0013] In some possible implementations, the first limiting component is a roller; the roller is received in the guide groove of the fixed bottom plate and is in rolling contact with the side wall of the guide groove.

[0014] In some possible implementations, the branch rod on which the first limiting assembly is installed is protruded with an auxiliary tooth, and the auxiliary tooth is installed with a guide structure, and the guide structure is rollingly matched with a guide groove of the linkage support mechanism.

[0015] In some possible implementations, the sleeve ring is provided with an oblique groove, the focusing lens assembly includes a protruding rod matched with the oblique groove, and one of the branch rods is rotatably connected to a connecting protrusion of the sleeve ring.

[0016] In some possible embodiments, the linkage support mechanism includes two parallel slider groups, each slider group includes at least two spaced-apart sliders, the sliders are provided with dovetail grooves, and the two opposite edges of the fixed base plate are provided with guide rails, and the two guide rails respectively correspond to and cooperate with the dovetail grooves of the sliders of the two slider groups.

[0017] In some possible embodiments, the fundus ophthalmoscope module also includes a positioning structure, which includes a positioning groove and a positioning bead that are interlocked with each other, the positioning groove is arranged on the linkage support mechanism, and the positioning bead is arranged on the fixed base plate, or the positioning groove is arranged on the fixed base plate, and the positioning bead is arranged on the linkage support mechanism.

[0018] In some possible embodiments, there is also a protective cover, which is detachably mounted on the bottom of the fundus lens main body module; the front lens module is fixedly connected to the fundus lens main body module via a retaining frame assembly, or the front lens module is fixedly connected to the protective cover via a retaining frame assembly.

[0019] The operating microscope includes a head and an ophthalmoscope module as described in any of the above solutions. The head includes a main mirror body and an objective lens. The fixed base plate is installed at the bottom of the main mirror body. The ophthalmoscope head body module slides along the fixed base plate, and the linkage support mechanism simultaneously drives the focusing lens group to move in the second direction, so that the optical lens group of the focusing lens group and the objective lens can be coaxial.

[0020] Advantages of the present invention:

[0021] For the ophthalmoscope module provided by the present invention, by setting the ophthalmoscope head body module to be slidably connected to the fixed base plate, when the ophthalmoscope head body module slides along the fixed base plate, the linkage support mechanism synchronously drives the focusing lens group to move in the second direction, so that the focusing lens group moves to a suitable position to adapt to the head structures of different manufacturers to meet the required imaging effect.

[0022] The operating microscope provided by the present invention includes the above ophthalmoscope module. When the operating microscope is converted from the anterior segment mode to the posterior segment mode, it can simultaneously adjust the movement of the focusing lens group in the second direction, so that the focusing lens group moves to the working position to meet the required imaging effect. Description of the drawings

[0023] Figure 1 is a schematic diagram of the state of the operating microscope provided by the embodiment of the present invention in the anterior segment mode;

[0024] Figure 2 is a schematic diagram of the state of the operating microscope provided by the embodiment of the present invention in the posterior segment mode;

[0025] Figure 3 is an exploded view of the ophthalmoscope module provided by the embodiment of the present invention;

[0026] Figure 4 is an assembly schematic diagram of the linkage support mechanism and the focusing lens group from one perspective provided by the embodiment of the present invention;

[0027] Figure 5 is an assembly schematic diagram of the linkage support mechanism and the focusing lens group from another perspective provided by the embodiment of the present invention;

[0028] Figure 6 is an assembly schematic diagram of the drive focusing mechanism and the focusing lens group provided by the embodiment of the present invention;

[0029] Figure 7 is Figure 6 a partial enlarged view of part A in;

[0030] Figure 8 is a cross-sectional view of the focusing lens group provided by the embodiment of the present invention.

[0031] In the figure:

[0032] 100, fundus camera module; 110, upper cover body; 111, guiding groove; 112, slider; 121, linkage rod; 1211, auxiliary tooth; 1212, guiding structure; 122, socket ring; 1221, inclined groove; 1222, connecting convex block; 123, roller; 124, connecting shaft; 130, focusing lens group; 131, convex rod; 132, adjusting ring; 133, first lens structure; 1331, inner sleeve; 1332, first lens; 1333, rod structure; 134, second lens structure; 1341, outer sleeve; 13411, vertical groove; 1342, second lens; 140, fixed bottom plate; 141, guiding connection groove; 1411, linear groove part; 1412, arc groove part; 142, guide rail; 143, mounting interface part; 151, positioning bead; 160, protective sleeve; 170, focusing lens group outer sleeve; 180, cage assembly; 190, front lens assembly; 1011, lead screw; 1012, lead screw nut; 1013, manual focusing knob; 1014, driving part; 10151, driving wheel; 10152, driven wheel; 10153, first mounting plate; 10154, second mounting plate; 10155, guiding connection rod; 10156, guiding connection wheel; 1016, transmission rod; 10161, kidney-shaped groove; 1017, driving rod; 200, machine head; 210, main mirror body; 211, convex structure; 220, objective lens. Detailed implementation manners

[0033] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the convenience of description, only parts related to the present invention are shown in the drawings, rather than all structures.

[0034] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly under and obliquely under the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0036] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] It should be added that regarding the fixed connection, for example, the fixed connection between A and B does not limit the direct fixed connection relationship between A and B. If A and B form an overall fixed positional relationship through other structures, it also belongs to the scope of interpretation of this fixed connection.

[0038] As Figures 1 to 5 shown, this embodiment provides an ophthalmoscope module 100, which includes a fixed base plate 140, an ophthalmoscope lens body module and a front lens module. The ophthalmoscope lens body module is slidably connected to the fixed base plate 140 along a first direction, and the front lens module is fixedly connected to the ophthalmoscope lens body module through a holder assembly 180. The ophthalmoscope lens body module includes a focusing lens group 130 and a linkage support mechanism. When the ophthalmoscope lens body module slides along the fixed base plate 140, the linkage support mechanism synchronously drives the focusing lens group 130 to move along a second direction. It should be noted that the second direction in this embodiment is not limited to the principal optical axis direction for observing the anterior and posterior segments of the eye, and is generally the vertical direction. If the patient is in a sitting position or not lying flat, this optical axis can obviously be selected in other directions to achieve limited observation of the anterior and posterior segments of the eye; the first direction is the direction along which some lens components are moved into or out of the principal optical axis, and generally the horizontal direction can be selected. Generally, the first direction refers to the horizontal direction and the second direction refers to the vertical direction.

[0039] The above-mentioned fundus mirror module 100 is configured to be slidably connected to the fixed base plate 140 by setting a fundus lens main body module. When the fundus lens main body module slides along the fixed base plate 140, the linkage support mechanism synchronously drives the focusing lens group 130 to move along the second direction, so that the focusing lens group 130 moves to a suitable position, adapting to the head 200 structure of different manufacturers to meet the required imaging effect.

[0040] like Figures 6 - 8 As shown, a driving focusing structure is also provided on the linkage support mechanism, and the focusing lens group 130 includes an adjusting ring 132, a first lens structure 133 slidably embedded in the adjusting ring 132, and a second lens structure 134 sleeved on the adjusting ring 132 and capable of supporting the adjusting ring 132, and the second lens structure 134 is slidably connected to the linkage support mechanism; the driving focusing mechanism includes a lead screw 1011 and a lead screw nut 1012 sleeved on the lead screw 1011, and by rotating the lead screw 1011, the lead screw nut 1012 can drive the adjusting ring 132 to rotate, and the adjusting ring 132 can drive the first lens structure 133 to move along the second direction.

[0041] By relative sliding of the linkage support mechanism and the second lens structure 134, the focusing lens group 130 is adjusted to move in the second direction, so that the fundus mirror module 100 is adapted to the host structure of different manufacturers. At the same time, the lead screw 1011 is rotated to make the lead screw nut 1012 drive the adjustment ring 132 to rotate, and the adjustment ring 132 drives the first lens structure 133 to move in the second direction to adjust the relative position between the first lens structure 133 and the second lens structure 134, thereby changing the relative position between the optical components, meeting the focusing requirements, and the flexibility of focusing, which meets the flexibility of product use.

[0042] Optionally, the linkage support mechanism includes a linkage rod 121, which includes two branch rods fixedly arranged at an angle and a connecting shaft 124, wherein one branch rod is transmission-connected to the focusing lens group 130 through a sleeve ring 122, and a first limit assembly is fixedly arranged at the end of the other branch rod, and a second limit assembly corresponding to the first limit assembly is provided on the fixed bottom plate 140. When the fundus lens main body module slides along the fixed bottom plate 140, one of the branch rods drives the focusing lens group 130 to move in the second direction through the sleeve ring 122, so that the focusing lens group 130 moves to a suitable position.

[0043] Further, the second limiting component is a guiding groove 141, which includes a linear groove portion 1411 and an arc groove portion 1412 that are in communication with each other. The arc groove portion 1412 is disposed close to the focusing lens group 130, and the linear groove portion 1411 is disposed away from the focusing lens group 130, and the extending direction of the linear groove portion 1411 is parallel to the first direction. The linear groove portion 1411 is used for the switching between two working modes (anterior segment mode and posterior segment mode) of the fundus camera module 100 along the first direction, and the arc groove portion 1412 is used for driving the focusing lens group 130 to move along the second direction by the linkage support mechanism. It can be understood that the sizes of the linear groove portion 1411 and the arc groove portion 1412 can be adjusted based on the requirements of different operating microscope optical systems to satisfy the distance adjustment relationship from the vertex of the microscope objective 220 to the vertex of the focusing lens group 130 of the fundus camera module 100.

[0044] In related embodiments, the first limiting component is a roller 123; the roller 123 is received in the guiding groove 141 of the fixed base plate 140 and is in rolling contact with the side wall of the guiding groove 141, so that the movement of the first limiting component in the second limiting component is smoother. In other embodiments, the first limiting component can also be set as a limiting rod, and the limiting rod is received in the guiding groove 141 of the fixed base plate 140 and is in sliding contact with the side wall of the guiding groove 141. Under the limitation of the guiding groove 141, the limiting rod drives the end of its corresponding branch rod to move.

[0045] Optionally, the socket ring 122 is provided with an inclined groove 1221, and the focusing lens group 130 includes a convex rod 131 that cooperates with the inclined groove 1221. A branch rod is rotationally and cooperatively connected to a connecting convex block 1222 of the socket ring 122. The second lens structure 134 includes an outer sleeve 1341 and a second lens 1342 mounted on the outer sleeve 1341. The convex rod 131 is fixed on the outer peripheral surface of the outer sleeve 1341. Further, the outer sleeve 1341 includes a concave structure at the bottom for supporting the adjusting ring 132 and accommodating the adjusting ring 132 to rotate therein, and the inner end of the concave structure is fixedly connected to the second lens 1342.

[0046] Further, the connecting convex block 1222 includes a groove body, and the end of a branch rod has a protruding rod that cooperates with the groove body of the connecting convex block 1222 to drive the connecting convex block 1222 to rotate. In some possible implementation manners, one end of the branch rod may have a groove structure for accommodating the end of the connecting convex block 1222 to limit one end of the connecting convex block 1222 and realize the corresponding driving relationship.

[0047] The funduscope module 100 further includes a protective cover 160, which is sleeved on the focusing lens group 130 and is detachably connected to the funduscope body module. This setting facilitates the disassembly and assembly of the protective cover 160. In this embodiment, the protective cover 160 is set as a disinfection protective cover 160 for disinfecting and maintaining the funduscope body module. Optionally, the linkage support mechanism further includes a focusing lens group outer sleeve 170, which is used to protect and carry the focusing lens group 130. At the same time, the protective cover 160 is also sleeved on the focusing lens group outer sleeve 170 and is detachably connected to it, so as to facilitate disassembly and assembly.

[0048] Preferably, a branch rod installed with a first limiting component protrudes with an auxiliary tooth 1211, and a guiding structure 1212 is installed on the auxiliary tooth 1211. A guiding groove 111 is arranged on the linkage support mechanism, and the guiding structure 1212 is in rolling cooperation with the guiding groove 111. When the first limiting component moves along the arc-shaped groove part 1412 of the guiding connection groove 141, the guiding structure 1212 can assist in guiding the first limiting component to improve the movement stability of the branch rod. Optionally, the guiding structure 1212 is a ball or a guiding rod.

[0049] Combined with the above embodiments or the following embodiments, further, the linkage support mechanism can optionally include a detachably fixed upper cover body 110. The funduscope body module can optionally be slidably connected to the fixed bottom plate 140 through the upper cover body 110. The guiding groove 111 can be arranged on the upper cover body 110, and the connecting shaft 124 can be fixedly connected to the upper cover body 110.

[0050] During the production process, only the guiding connection groove 141 part of the fixed bottom plate 140 needs to be adjusted in size, and then the solution of the present invention can be used in the surgical microscope bodies of different manufacturers to meet the configuration settings of the distance from the vertex under the microscope main objective lens to the vertex on the funduscope optical lens group for different optical system settings of each product. Correspondingly, the guiding groove 111 on the upper cover body 110 of the linkage support mechanism also needs to be correspondingly configured. In summary, through simple production adjustment of two parts, the product configuration requirements of most manufacturers can be met. These parts are all detachably installed structures and can be produced in a supporting manner for the mainstream product models in the products. Users can select different models of these optional parts based on their needs to meet the configuration and use of different models of equipment.

[0051] Furthermore, to improve the movement stability of the linkage rod 121, the connection part of the two branch rods can be rotatably connected to the linkage support mechanism through the connecting shaft 124.

[0052] The linkage support mechanism further includes two slider groups arranged in parallel. Each slider group includes at least two sliders 112 arranged at intervals. The sliders 112 are provided with dovetail chutes. Guide rails 142 are arranged on two opposite edges of the fixed bottom plate 140. The two guide rails 142 are respectively matched with the dovetail chutes of the sliders 112 of the two slider groups, so that the sliding between the linkage support mechanism and the fixed bottom plate 140 is stable and reliable.

[0053] Preferably, the fundus camera module 100 further includes a positioning structure. The positioning structure includes a positioning groove and a positioning bead 151 that are engaged with each other. The positioning groove is arranged on the linkage support mechanism, and the positioning bead 151 is arranged on the fixed bottom plate 140, or the positioning groove is arranged on the fixed bottom plate 140, and the positioning bead 151 is arranged on the linkage support mechanism. The setting of the positioning structure can fix the fundus camera module 100 when switching between two working modes (anterior segment mode and posterior segment mode).

[0054] Optionally, the lead screw nut 1012 of the driving focusing mechanism is provided with a rotatable transmission rod 1016. The transmission rod 1016 is provided with an oblong slot 10161 along the second direction. A driving rod 1017 is slidably connected in the oblong slot 10161. The driving rod 1017 is fixedly connected to the adjusting ring 132. The oblong slot 10161 is arranged along the second direction, so that the driving rod 1017 does not interfere with the movement of the focusing lens group 130 in the second direction; the driving rod 1017 can rotate under the drive of the linkage rod, so the driving rod 1017 can drive the adjusting ring 132 to rotate, and further the adjusting ring 132 drives the first lens structure 133 to move along the second direction.

[0055] In this embodiment, the adjusting ring 132 is provided with an obliquely oriented hole. The first lens structure 133 includes a rod structure 1333 that cooperates with the obliquely oriented hole, and the outer sleeve 1341 of the second lens structure 134 is provided with a limiting structure. The end of the rod structure 1333 extends into the limiting structure, so that the first lens structure 133 moves along the second direction. The limiting structure can effectively prevent the first lens structure 133 from rotating, enabling it to move only along the second direction, improving the adjustment reliability. Optionally, the limiting structure is set as a vertical slot 13411 extending along the second direction. Refer to Figure 8 The first lens structure 133 includes an inner sleeve 1331 and a first lens 1332 mounted on the inner sleeve 1331. The first lens 1332 and the second lens 1342 are coaxially arranged along the second direction. The rod structure 1333 is fixed to the inner sleeve 1331.

[0056] Optionally, manual focusing knobs 1013 are arranged at both ends of the lead screw 1011 to facilitate manual screwing operation and improve the screwing comfort.

[0057] Alternatively, the driving focusing mechanism also includes a driving member 1014, the lead screw 1011 and the output shaft of the driving member 1014 are connected by a gear assembly, and the driving member 1014 includes an electric focusing button. With such an arrangement, an electric focusing operation can be realized. Specifically, the gear assembly includes a driving wheel 10151 installed on the output shaft, two driven wheels 10152 installed at intervals on the lead screw 1011 and respectively located on both sides of the lead screw nut 1012, and a guide assembly, the guide assembly includes a first mounting plate 10153, a second mounting plate 10154, a guide rod 10155 and two guide wheels 10156, the two ends of the first mounting plate 10153 are respectively sleeved on the output shaft and the lead screw 1011 at intervals, and the first mounting plate 10153 is fixedly connected to the main body of the driving member 1014. One of the guide wheels 10156 is rotatably mounted on the first mounting plate 10153 and meshed with the driving wheel 10151 and one of the driven wheels 10152, the other guide wheel 10156 is rotatably mounted on the second mounting plate 10154 and meshed with the other driven wheel 10152, and the second mounting plate 10154 is sleeved on the lead screw 1011, and the two ends of the guide rod 10155 are respectively spaced through the first mounting plate 10153 and the second mounting plate 10154, and are respectively fixedly connected to the corresponding guide wheels 10156.

[0058] Optionally, the retaining frame assembly 180 includes two rotatably connected support frames, one of which is fixedly connected to the protective cover 160, and a front lens assembly 190 is disposed at the end of the other support frame, and the front lens assembly 190 includes two front lenses disposed at intervals.

[0059] The present embodiment also provides a surgical microscope, comprising a handpiece 200 and the above-mentioned fundus mirror module 100, the handpiece 200 comprising a main mirror body 210 and an objective lens 220, the fixed base plate 140 being mounted on the bottom of the raised structure 211 of the main mirror body 210 via a mounting interface 143, the fundus lens main body module sliding along the fixed base plate 140, when the surgical microscope is converted from an anterior segment mode to a posterior segment mode, the optical lens group of the focusing lens group 130 and the objective lens 220 are coaxial, and the linkage support mechanism simultaneously drives the focusing lens group 130 to move in the second direction, the focusing lens group 130 moves to a working position, and the required imaging effect is met; after the focusing lens group 130 moves to the initial working position, the relative position between the first lens structure 133 and the second lens structure 134 is adjusted by driving the focusing mechanism, thereby changing the distance between the first lens 1332 and the second lens 1342, and the focusing requirement is met, the focusing is flexible, and the flexibility of product use is met.

[0060] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A fundus ophthalmoscope module, characterized in that: include: A fixed bottom plate (140); A fundus lens main body module comprises a focusing lens group (130) and a linkage support mechanism; A front lens module, the front lens module being fixedly connected to the fundus lens main body module via a retaining frame assembly (180); The fundus lens main body module is slidably connected to the fixed base plate (140) along a first direction; when the fundus lens main body module slides along the fixed base plate (140), the linkage support mechanism synchronously drives the focusing lens group (130) to move along a second direction.

2. The fundus ophthalmoscope module according to claim 1, characterized in that: The linkage support mechanism comprises a linkage rod (121), the linkage rod (121) comprising two branch rods fixedly arranged at an angle and a connecting shaft (124), wherein one branch rod is transmission-connected to the focusing lens group (130) via a sleeve ring (122), a first limiting component is fixedly arranged at the end of the other branch rod, and a second limiting component corresponding to the first limiting component is provided on the fixed base plate (140).

3. The fundus ophthalmoscopy module according to claim 2, characterized in that: The second limiting component is a guide groove (141), and the guide groove (141) includes a straight groove portion (1411) and an arc groove portion (1412) that are connected to each other, the arc groove portion (1412) is arranged close to the focusing lens group (130), and the straight groove portion (1411) is arranged away from the focusing lens group (130), and the extension direction of the straight groove portion (1411) is parallel to the first direction.

4. The fundus ophthalmoscope module according to claim 3, characterized in that: The first limiting component is a roller (123); the roller (123) is received in the guide groove (141) of the fixed bottom plate (140) and is in rolling contact with the side wall of the guide groove (141).

5. The fundus ophthalmoscopy module according to claim 2, characterized in that: The branch rod on which the first limiting assembly is installed is provided with an auxiliary tooth (1211), and the auxiliary tooth (1211) is provided with a guide structure (1212), and the guide structure (1212) is rollingly matched with the guide groove (111) of the linkage support mechanism.

6. The fundus ophthalmoscope module according to claim 2, characterized in that: The sleeve ring (122) is provided with an oblique groove (1221), the focusing lens group (130) comprises a convex rod (131) matched with the oblique groove (1221), and one of the branch rods is rotatably matched with a connecting protrusion (1222) of the sleeve ring (122).

7. The fundus ophthalmoscope module according to claim 1, characterized in that: The linkage support mechanism comprises two parallel slider groups, each of the slider groups comprises at least two sliders (112) spaced apart from each other, the sliders (112) being provided with dovetail slide grooves, two opposite edges of the fixed base plate (140) being provided with guide rails (142), the two guide rails (142) respectively corresponding to and cooperating with the dovetail slide grooves of the sliders (112) of the two slider groups.

8. The fundus ophthalmoscope module according to claim 1, characterized in that: The fundus ophthalmoscope module also includes a positioning structure, which includes a positioning groove and a positioning bead (151) that are mutually engaged, the positioning groove is arranged on the linkage support mechanism, and the positioning bead (151) is arranged on the fixed base plate (140), or the positioning groove is arranged on the fixed base plate (140), and the positioning bead (151) is arranged on the linkage support mechanism.

9. The fundus ophthalmoscope module according to any one of claims 1 to 8, characterized in that: It also has a protective cover (160), which is detachably sleeved on the bottom of the fundus lens main body module; the front lens module is fixedly connected to the fundus lens main body module via the retaining frame assembly (180), or the front lens module is fixedly connected to the protective cover (160) via the retaining frame assembly (180).

10. An operating microscope, characterized in that The invention comprises a head (200) and an ophthalmoscope module as described in any one of claims 1 to 9, wherein the head (200) comprises a main mirror body (210) and an objective lens (220), the fixed base plate (140) is installed at the bottom of the main mirror body (210), the fundus lens main body module slides along the fixed base plate (140), and the linkage support mechanism simultaneously drives the focusing lens group (130) to move along the second direction, so that the optical lens group of the focusing lens group (130) and the objective lens (220) can be coaxial.

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