Operating microscope focusing and illumination synchronous adjusting device

Abstract

The invention provides an operating microscope focusing and illumination synchronous adjusting device, which comprises a fixed lens group and a focusing lens group, and is characterized in that the focusing lens group can be driven to move relative to the fixed lens group along an optical axis; the lighting assembly comprises a reflecting mirror set and a rotating shaft arranged on the reflecting mirror set. The angle adjusting assembly comprises a guide piece, an angle adjusting block connected with the rotating shaft, a transmission piece arranged at one end, far away from the rotating shaft, of the angle adjusting block, and a pre-tightening piece; the guide piece is configured to synchronously move along the optical axis along with the focusing lens group; the guiding piece is provided with a guiding inclined face in sliding contact with the transmission piece, and the pre-tightening piece is used for driving the transmission piece to keep contact with the guiding inclined face in the adjusting process so as to guide the transmission piece to drive the angle adjusting block and the rotating shaft to jointly rotate along the axis of the rotating shaft. According to the operating microscope focusing and illumination synchronous adjusting device disclosed by the invention, the center of an illumination light spot always coincides with the center of the visual field of the microscope in the focusing process.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a synchronous adjustment device for focusing and illumination of an operating microscope. Background Art

[0002] In microsurgery, an operating microscope needs to provide a stable magnified field of view for doctors through a high-resolution optical system, and at the same time ensure uniform brightness of the surgical field through an illumination system.

[0003] In complex surgeries, doctors need to frequently adjust the working distance of the microscope. Due to the fixed angle of the illumination reflector in the prior art, during the focusing process, when the objective lens moves up and down to change the working distance, the center of the illumination spot may deviate from the center of the field of view, resulting in uneven brightness of the surgical field, affecting the clarity of the surgical field of view, and requiring manual repeated adjustment of the light source position, which affects the surgical efficiency.

[0004] It should be noted that the above introduction of the background art is only for the convenience of clearly and completely explaining the technical solutions of the present application and facilitating the understanding of those skilled in the art. It cannot be considered that the above technical solutions are well-known to those skilled in the art just because these solutions are described in the background art part of the present application. Summary of the Invention

[0005] The purpose of the present invention is to disclose a synchronous adjustment device for focusing and illumination of an operating microscope, which is used to solve various defects existing in the illumination system in the prior art, especially to achieve that the center of the illumination spot always coincides with the center of the microscope field of view during the focusing process.

[0006] To achieve the above purpose, the present invention provides a synchronous adjustment device for focusing and illumination of an operating microscope, including: a mirror base assembly, a focusing assembly, an illumination assembly, and an angle adjustment assembly; The focusing assembly includes: a fixed lens group and a focusing lens group that are coaxially arranged on the mirror base assembly in sequence from the object side, and the focusing lens group can be driven to move along the optical axis relative to the fixed lens group; The illumination assembly includes: a mirror group, and a rotation axis arranged on the mirror group; The angle adjustment assembly includes: a guiding member, the guiding member is configured to move synchronously along the optical axis with the focusing lens group, an angle adjustment block connecting the rotation axis, a transmission member arranged at one end of the angle adjustment block far from the rotation axis, and a pre-tightening member; The guiding member is constructed with a guiding inclined surface that forms a sliding contact with the transmission member, and the pre-tightening member is used to drive the transmission member to keep in contact with the guiding inclined surface during the adjustment process, so as to guide the transmission member to drive the angle adjustment block and the rotation axis to rotate together along the axis of the rotation axis.

[0007] As a further improvement of the present invention, the inclination direction of the guiding inclined plane forms an acute angle or an obtuse angle with the optical axis.

[0008] As a further improvement of the present invention, the lens holder assembly includes: a fixed lens holder for configuring the fixed lens group, and a focusing lens holder for configuring the focusing lens group; The inner surface of the fixed lens holder is constructed with a stepped surface perpendicular to the optical axis, and the focusing lens holder is constructed with a protruding portion arranged opposite to the stepped surface along the optical axis.

[0009] As a further improvement of the present invention, the lighting assembly further includes: a reflecting mirror barrel configured on the fixed lens holder; The reflecting mirror group includes: a reflecting mirror seat arranged in the reflecting mirror barrel, and a reflecting unit configured on the reflecting mirror seat; The rotating shaft is configured on the reflecting mirror seat and penetrates through the reflecting mirror barrel along a first direction. The rotating shaft is rotatably connected to the reflecting mirror barrel, and one end of the rotating shaft penetrating out of the reflecting mirror barrel is connected to the angle adjusting block.

[0010] As a further improvement of the present invention, the lighting assembly further includes: an elastic member sleeved outside the rotating shaft; The reflecting mirror seat forms a rotational contact with the side wall of the reflecting mirror barrel opposite to it along the first direction; Both ends of the elastic member along its length direction are respectively connected to the angle adjusting block and the reflecting mirror seat, or both ends of the elastic member along its length direction are respectively connected to the reflecting mirror seat and the reflecting mirror barrel.

[0011] As a further improvement of the present invention, a transmission rod extends along the first direction on the side of the angle adjusting block away from the rotating shaft; The pre-tightening member is configured as a tension spring. The tension spring is arranged in the reflecting mirror barrel along a second direction perpendicular to the first direction. Both ends of the tension spring along the second direction are respectively connected to the reflecting mirror barrel and the transmission rod to form an elastic acting force on the transmission rod.

[0012] As a further improvement of the present invention, the surgical microscope focusing and lighting synchronous adjustment device further includes: a driving assembly for driving the focusing lens holder to move along the optical axis, and a guiding assembly for guiding the focusing lens holder to move along the optical axis.

[0013] As a further improvement of the present invention, the driving assembly includes: a threaded rod arranged parallel to the optical axis, a driving motor for driving the threaded rod to rotate along its axis, and an adapter block that forms a threaded fit with the threaded rod and is connected to the focusing lens holder.

[0014] As a further improvement of the present invention, the guiding assembly includes: a first guide rail disposed on the fixed lens holder, and a second guide rail disposed on the focusing lens holder and forming a sliding fit with the first guide rail, wherein the length directions of the first guide rail and the second guide rail are parallel to the optical axis.

[0015] As a further improvement of the present invention, the guiding assembly further includes: a guiding rail disposed on the fixed lens holder and near the guiding member, and a movable member disposed on the guiding member, wherein the movable member is disposed in the sliding groove of the guiding rail and forms a sliding contact with the sliding groove, and the length direction of the guiding rail is parallel to the optical axis.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: when the focusing lens group moves up and down along the optical axis to adjust the working distance for focusing operation, the focusing lens group drives the guiding member to move synchronously along the optical axis, and the transmission member slides along the guiding inclined surface in a passive manner under the guidance of the guiding inclined surface, so that the transmission member generates a lateral displacement, thereby pushing the angle adjusting block and the rotating shaft to rotate around the axis of the rotating shaft, and the rotating shaft drives the reflecting mirror group to rotate synchronously to adjust the reflection angle of the illumination beam, so that the center of the illumination spot always tracks the center of the field of view, so as to realize that the center of the illumination spot always coincides with the center of the field of view, solve the problem of uneven brightness of the surgical field caused by the deviation of the spot in the prior art, and avoid the cumbersome operation of manually adjusting the light source repeatedly, so that the doctor can focus on the surgical operation throughout the process, and improve the efficiency and safety of microsurgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an overall schematic diagram of the focusing and illumination synchronous adjustment device of the surgical microscope disclosed in the present invention; Figure 2 is Figure 1 the enlarged view shown by the circle A in Figure 3 is an overall schematic diagram of the focusing and illumination synchronous adjustment device of the surgical microscope from another perspective; Figure 4 is Figure 3 the enlarged view shown by the circle B in Figure 5 is a top view schematic diagram of the focusing and illumination synchronous adjustment device of the surgical microscope; Figure 6 is Figure 5 the sectional view taken along the C-C direction in Figure 7 is a partial schematic diagram of the contact between the transmission member and the guiding inclined surface, wherein the inclination direction of the guiding inclined surface forms an acute angle with the optical axis; Figure 8 is a partial schematic diagram of the contact between the transmission member and the guiding inclined surface in another embodiment, wherein the inclination direction of the guiding inclined surface forms an obtuse angle with the optical axis; Figure 9For Figure 6 In the sectional view of the rotation axis in the D-D direction and the mirror barrel, at both ends of the elastic member are respectively connected to the angle adjustment block and the mirror base; Figure 10 In another embodiment, it is a sectional view of the rotation axis and the mirror barrel, where at both ends of the elastic member are respectively connected to the mirror barrel and the mirror base. Specific Embodiment

[0018] The present invention will be described in detail below in conjunction with the embodiments shown in the drawings. It should be noted that these embodiments are not intended to limit the present invention. Any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present invention.

[0019] Please refer Figures 1 to 10 To a specific embodiment of a focusing and illumination synchronization adjustment device for a surgical microscope disclosed.

[0020] Refer Figures 1 to 6 As shown, in this embodiment, the focusing and illumination synchronization adjustment device 100 for the surgical microscope includes: a mirror base assembly 10, a focusing assembly 20, an illumination assembly 30, and an angle adjustment assembly 40.

[0021] The focusing assembly 20 includes: starting from the object side (as Figure 6 shown, the direction where the measured object W is located is the object side), a fixed lens group 21 and a focusing lens group 22 of the mirror base assembly 10 are arranged coaxially (i.e., Figure 6 the central axis Z1). The focusing lens group 22 can be driven to move along the optical axis relative to the fixed lens group 21; the illumination assembly 30 includes: a mirror group 31, and a rotation axis 32 arranged on the mirror group 31; the angle adjustment assembly 40 includes: a guide member 41, the guide member 41 is configured to move synchronously along the optical axis with the focusing lens group 22, an angle adjustment block 42 connecting the rotation axis 32, a transmission member 43 arranged at one end of the angle adjustment block 42 away from the rotation axis 32, and a pre-tightening member 44; the guide member 41 is constructed with a guide inclined surface 411 that forms a sliding contact with the transmission member 43, and the pre-tightening member 44 is used to drive the transmission member 43 to remain in contact with the guide inclined surface 411 during the adjustment process to guide the transmission member 43 to drive the angle adjustment block 42 and the rotation axis 32 to rotate together along the axis of the rotation axis 32.

[0022] The focusing lens group 22 performs a focusing operation by changing the working distance through moving along the optical axis. The mirror group 31 is used to reflect the illumination beam to the surgical field. The mirror group 31 rotates along the rotation axis 32 to change the tilt angle of the mirror group 31 so as to adjust the position of the illumination spot. The pre-tightening member 44 applies a contact pressure with a certain flexibility to the angle-adjusting block 42 to ensure that the guiding inclined surface 411 and the transmission member 43 are always in contact during the adjustment process, eliminate the mechanical clearance between the guiding inclined surface 411 and the transmission member 43, and reduce the adjustment error.

[0023] When the focusing lens group 22 moves up and down along the optical axis (adjusting the working distance for focusing operation), the focusing lens group 22 drives the guiding member 41 to move synchronously along the optical axis. Through the sliding contact between the guiding inclined surface 411 and the transmission member 43, the transmission member 43 slides passively along the guiding inclined surface 411 under the guidance of the guiding inclined surface 411, so that the transmission member 43 generates a lateral ( Figure 1 the direction shown by the X-axis in the figure) displacement, thereby pushing the angle-adjusting block 42 and the rotation axis 32 to rotate around the axis Z3 of the rotation axis 32. The rotation axis 32 drives the mirror group 31 to rotate synchronously to adjust the reflection angle of the illumination beam, correct the deviation of the illumination optical path from the field of view caused by the displacement of the focusing lens group 22, and make the center of the illumination spot always track the center of the field of view, so as to achieve that the center of the illumination spot always coincides with the center of the field of view, solve the problem of uneven brightness of the surgical field caused by the deviation of the spot in the prior art, and avoid the cumbersome operation of manually adjusting the light source repeatedly, enabling the doctor to focus on the surgical operation throughout the process, and improving the efficiency and safety of microsurgery.

[0024] In some examples, the focusing lens group 22 and the fixed lens group 21 include a plurality of optical elements arranged along the optical axis. The focusing lens group 22 moves along the optical axis to cooperate with the fixed lens group 21 to realize the focusing function of the surgical microscope focusing and illumination synchronization adjustment device 100. Since the optical element parameters included in the focusing lens group 22 and the fixed lens group 21 belong to conventional optical designs, they will not be elaborated here.

[0025] In some examples, the transmission member 43 is configured as a bearing and forms a rolling contact with the guiding inclined surface 411. When the guiding member 41 moves along the optical axis with the focusing lens group 22, through the rolling contact between the guiding inclined surface 411 and the transmission member 43, the transmission member 43 rolls passively along the guiding inclined surface 411 under the guidance of the guiding inclined surface 411, so that the transmission member 43 moves and rolls laterally, thereby driving the angle-adjusting block 42 and the rotation axis 32 to rotate around the axis Z3 of the rotation axis 32. The rotation axis 32 drives the mirror group 31 to rotate synchronously to adjust the reflection angle of the illumination beam.

[0026] In some examples, the inclination direction of the guiding inclined surface 411 forms an acute angle α as shown in Figure 7 the figure with the optical axis. When the guiding member 41 moves upward along the optical axis with the focusing lens group 22, the transmission member 43 moves along Figure 7Move and roll in the direction shown by the arrow X1, so as to drive the angle-adjusting block 42 and the rotating shaft 32 to rotate counterclockwise around the axis Z3 of the rotating shaft 32, so as to adjust the rotation angle of the mirror group 31. Or, the inclination direction of the guiding inclined surface 411 forms an obtuse angle β as shown in Figure 8 shown. When the guiding member 41 moves downward along the optical axis with the focusing lens group 22, the transmission member 43 moves and rolls in the Figure 8 direction shown by the arrow X1, so as to drive the angle-adjusting block 42 and the rotating shaft 32 to rotate counterclockwise around the axis Z3 of the rotating shaft 32, so as to adjust the rotation angle of the mirror group 31. Through the guiding inclined surfaces 411 with different inclination directions, the focusing lens group 22 can adjust the rotation angle of the mirror group 31 by moving upward or downward, improving the applicability.

[0027] In some examples, referring to Figure 6 shown, the lens base assembly 10 includes: a fixed lens base 11 configured to fix the lens group 21, and a focusing lens base 12 configured to house the focusing lens group 22; a stepped surface 111 perpendicular to the optical axis is formed on the inner surface of the fixed lens base 11, and a protruding portion 121 is formed on the focusing lens base 12 and arranged opposite to the stepped surface 111 along the optical axis. During the assembly process of the lens base assembly 10, the protruding portion 121 of the focusing lens base 12 can be inserted into the stepped surface 111 of the fixed lens base 11 along the optical axis until the end surface of the protruding portion 121 is in complete contact with the stepped surface 111, so as to realize the automatic coaxial assembly of the fixed lens group 21 and the focusing lens group 22, without manual adjustment of the optical axis alignment, improving the assembly efficiency and the optical axis accuracy.

[0028] In some examples, referring to Figures 1 to 6 shown, the illumination assembly 30 further includes: a mirror barrel 33 disposed on the fixed lens base 11; the mirror group 31 includes: a mirror base 311 disposed in the mirror barrel 33, and a reflection unit 312 disposed on the mirror base 311; the rotating shaft 32 is disposed on the mirror base 311 and extends in the first direction (i.e., Figure 1The direction shown by the Y-axis in the figure) penetrates through the reflecting mirror barrel 33. The rotating shaft 32 is rotatably connected to the reflecting mirror barrel 33, and one end of the rotating shaft 32 that penetrates out of the reflecting mirror barrel 33 is connected to the angle adjusting block 42. The reflecting mirror barrel 33 is fixed on the fixed mirror base 11 to provide a stable mounting reference for the reflecting mirror group 31. The reflecting mirror base 311 is used to carry the reflecting unit 312. Through the linkage of the rotating shaft 32 and the angle adjusting block 42, the dynamic angle adjustment of the reflecting unit 312 is realized. The reflecting unit 312 (such as a plane reflecting mirror with a total reflection film plated on its mirror surface) is used to reflect the illumination beam to the surgical field. The deflection angle of the reflecting unit 312 determines the position of the illumination spot. The rotating shaft 32 penetrates through the reflecting mirror barrel 33 and connects the reflecting mirror base 311 and the angle adjusting block 42, transmitting the rotational motion of the angle adjusting block 42 to the reflecting mirror base 311. The angle adjusting block 42 is used to convert the lateral linear displacement of the transmission member 43 into a rotational angle around the rotating shaft 32. When the focusing lens group 22 moves along the optical axis, the guiding member 41 moves synchronously, and the guiding inclined surface 411 pushes the transmission member 43 to move and roll laterally. The transmission member 43 pushes the angle adjusting block 42 and the rotating shaft 32 to rotate around the axis Z3 through the lateral displacement. The rotating shaft 32 drives the reflecting mirror base 311 and the reflecting unit 312 to rotate synchronously around the axis Z3, so as to deflect the reflecting illumination optical path and make the center of the illumination spot coincide with the center of the field of view.

[0029] In some examples, referring to Figure 9 As shown, the illumination assembly 30 further includes: an elastic member 34 (such as a spring) sleeved outside the rotating shaft 32; the side walls of the reflecting mirror base 311 and the reflecting mirror barrel 33 that are opposite to each other in the first direction form a rotational contact; the two ends of the elastic member 34 along its length are respectively connected to the angle adjusting block 42 and the reflecting mirror base 311. The reflecting mirror barrel 33 is provided with a limiting groove 332 for accommodating part of the elastic member 34. The elastic member 34 is sleeved outside the rotating shaft 32. One end of the elastic member 34 along its length is fixed to the groove wall 333 of the limiting groove 332, and the other end abuts against the angle adjusting block 42. When assembling, the elastic member 34 is compressed to store elastic potential energy, so as to continuously apply a thrust force along the Figure 9 direction shown by the arrow Y1 in the figure to ensure that the side wall 3111 of the reflecting mirror base 311 is in close contact with the side wall 331 of the reflecting mirror barrel 33, preventing the reflecting mirror base 311 from displacing along the axis of the rotating shaft 32 during rotation, so as to avoid the deviation of the center of the illumination spot from the center of the field of view.

[0030] In some examples, referring to Figure 10 As shown, the two ends of the elastic member 34 along its length are respectively connected to the reflecting mirror base 311 and the reflecting mirror barrel 33. The elastic member 34 is sleeved outside the rotating shaft 32. One end of the elastic member 34 along its length is fixed to the groove wall 333 of the limiting groove 332, and the other end abuts against the reflecting mirror base 311. When assembling, the elastic member 34 is compressed to store elastic potential energy, so as to continuously apply a thrust force along the Figure 10The thrust in the direction indicated by the arrow Y1 ensures that the side wall 3111 of the mirror base 311 is in close contact with the side wall 331 of the mirror barrel 33.

[0031] In some examples, refer Figures 1 to 5 As shown, on the side of the angle adjustment block 42 away from the rotation axis 32, a transmission rod 45 extends along the first direction; the pre-tightening member 44 is configured as a tension spring, and the tension spring is arranged in the mirror barrel 33 along the second direction perpendicular to the first direction (i.e., Figure 1 the direction indicated by the X-axis in the figure). The two ends of the tension spring along the second direction are respectively connected to the mirror barrel 33 and the transmission rod 45 to form an elastic acting force on the transmission rod 45. A connecting rod 334 is provided at the top of the mirror barrel 33. The two ends of the tension spring along the second direction are respectively connected to the transmission rod 45 and the connecting rod 334. When assembling, the tension spring is stretched to store elastic potential energy. The transmission rod 45 is pulled by the tension of the tension spring, so as to apply a certain flexible contact pressure to the angle adjustment block 42, ensuring that the guiding inclined surface 411 and the transmission member 43 are always in contact during the adjustment process, eliminating the mechanical gap between the guiding inclined surface 411 and the transmission member 43, and reducing the adjustment error.

[0032] In some examples, refer Figure 1 As shown, the surgical microscope focusing and illumination synchronous adjustment device 100 further includes: a driving component 50 for driving the focusing lens base 12 to move along the optical axis, and a guiding component 60 for guiding the focusing lens base 12 to move along the optical axis. The driving component 50 is used to drive the focusing lens base 12 to move along the optical axis to change the working distance to achieve precise focusing. During the process of the driving component 50 driving the focusing lens base 12 to move along the optical axis, at the same time, the guiding component 60 restricts the focusing lens base 12 to move only along the optical axis, preventing the focusing lens base 12 from tilting or shifting during the movement along the optical axis, and ensuring the optical path consistency.

[0033] In some examples, refer Figure 1 、 Figure 3 And Figure 5 As shown, the driving component 50 includes: a threaded rod 51 arranged parallel to the optical axis, a driving motor 52 (such as a servo motor) for driving the threaded rod 51 to rotate along its axis (not shown), and an adapter block 53 that forms a threaded fit with the threaded rod 51 and is connected to the focusing lens base 12. The axis of the threaded rod 51 is parallel to the optical axis. The driving motor 52 drives the threaded rod 51 to rotate along its axis. Through the adapter block 53 forming a threaded fit with the threaded rod 51, the adapter block 53 moves along the axis direction of the threaded rod 51, and the adapter block 53 synchronously drives the focusing lens base 12 to move along the optical axis to achieve precise focusing. And, while the threaded rod 51 is rotating, the guiding component 60 restricts the focusing lens base 12 to move only along the optical axis to prevent the adapter block 53 from rotating synchronously with the threaded rod 51.

[0034] In some examples, refer Figure 1 、Figure 3 and Figure 5 As shown, the drive assembly 50 further includes: a mounting base 54 configured for the fixed lens base 11, a threaded rod 51 configured for and rotatably connected to the mounting base 54, and a drive motor 52 configured for the mounting base 54. The output shaft of the drive motor 52 is configured with a transmission gear (not shown), and the end of the threaded rod 51 is configured with a driven gear that meshes with the transmission gear, so that the output shaft of the drive motor 52 drives the transmission gear to rotate, and the driven gear meshes with the transmission gear, thereby driving the threaded rod 51 to rotate, thereby precisely controlling the rotation angle of the threaded rod 51 and the travel distance of the adapter block 53 and the focusing lens base 12, thereby achieving precise focusing.

[0035] In some examples, Figure 1 、 Figure 3 and Figure 5 As shown, the guide assembly 60 includes a first guide rail 61 disposed on the fixed lens mount 11, and a second guide rail 62 disposed on the focusing lens mount and slidably engaged with the first guide rail 61. The lengths of the first and second guide rails 61 and 62 are parallel to the optical axis. Both the first and second guide rails 61 and 62 define guide grooves (not labeled) each containing balls (not labeled). The balls form a slidable engagement with the first and second guide rails 61 and 62 to restrict linear movement of the focusing lens mount 12 along the optical axis, preventing deviation between the optical axis of the focusing lens assembly 22 and the center of the field of view during focusing.

[0036] In some examples, Figure 1 、 Figure 3 and Figure 5 As shown, the guide assembly 60 further includes a guide rail 63 disposed on the fixed mirror base 11 and proximate to the guide member 41, and a movable member 64 disposed on the guide member 41. The movable member 64 is disposed within and in sliding contact with a slot 631 of the guide rail 63. The length of the guide rail 63 is parallel to the optical axis. The guide rail 63 is fixed to the fixed mirror base 11, and the movable member 64 is mounted on the guide member 41. The slot 631 of the guide rail 63 and the movable member 64 closely fit together to prevent the guide member 41 from tilting or twisting during movement, ensuring that the guide member 41 can only move linearly along the optical axis. Furthermore, by working in conjunction with the first and second guide rails 61 and 62, the forces acting on the first and second guide rails 61 and 62, as well as on the movable member 64 and guide rail 63, are reduced, dissipating wear and extending service life. Furthermore, the movable member 64 provides more stable movement of the guide member 41, ensuring that the illumination spot always accurately tracks the center of the field of view, thereby improving surgical efficiency and safety.

[0037] In some examples, the movable member 64 is configured as a bearing and forms a rolling contact with the chute 631. When the guiding member 41 moves along the optical axis with the focusing lens group 22, the guiding member 41 synchronously drives the movable member 64 to move and roll along the optical axis within the chute 631 of the guiding rail 63, so as to ensure that the guiding member 41 can only move linearly along the optical axis.

[0038] In some examples, refer Figure 1 、 Figure 3 with Figure 5 and Figure 6 as shown, the illumination assembly 30 further includes: an illumination lens barrel 35 disposed on the fixed lens holder 11, a first lens group 361, a variable aperture 37, a second lens group 362, a third lens group 363, and a reflection unit 312 sequentially arranged along the illumination optical axis (i.e., Figure 6 the central axis Z2), and an adjustment mechanism 39 for adjusting the aperture size of the variable aperture 37. The first lens group 361 is used for preliminarily collecting and collimating the illumination beam, the variable aperture 37 is used for controlling the light passing amount of the illumination beam, the second lens group 362 and the third lens group 363 further shape and optimize the beam, and the reflection unit 312 is used for reflecting the illumination beam to the surgical field of view. The aperture size of the variable aperture 37 is adjusted by the adjustment mechanism 39 to adjust the light passing amount. A dust-proof lens 364 is further provided at the bottom of the illumination lens barrel 35 and below the reflection unit 312. The dust-proof lens 364 is exemplarily made of high-transmittance quartz glass to block contaminants such as blood and tissue fluid that may splash during the operation and prevent dust and other fine particles from entering the illumination lens barrel 35.

[0039] In some examples, the first lens group 361, the second lens group 362, and the third lens group 363 jointly complete the shaping and conduction of the illumination beam to ensure uniform illumination of the surgical field of view. The specific optical parameters of the first lens group 361, the second lens group 362, and the third lens group 363 are designed by conventional optical design according to the actual illumination requirements and will not be elaborated here.

[0040] In some examples, refer Figure 1 、 Figure 3 with Figure 5 and Figure 6As shown, the adjusting mechanism 39 includes: a drive shaft 391, a first gear 392 disposed on the drive shaft 391, and a second gear 393 sleeved outside the illumination lens barrel 35 and rotatably connected to the illumination lens barrel 35; the second gear 393 is connected to a lever 371 included in the variable aperture 37. The drive shaft 391 is connected to an external knob (not shown), the first gear 392 is fixed on the drive shaft 391, the second gear 393 meshes with the first gear 392 and can rotate around the illumination lens barrel 35, and the lever 371 is connected to the blades (not shown) of the variable aperture 37. The knob can be automatically or manually rotated by an external driving device (not shown) to drive the drive shaft 391 to rotate, so as to drive the first gear 392 to rotate. The first gear 392 drives the second gear 393 to rotate, and the second gear 393 drives the lever 371 to rotate synchronously, so as to control the opening and closing of the blades of the variable aperture 37 through the lever 371, thereby changing the aperture size to adjust the diameter and brightness of the illumination beam and realizing the adjustment of the illumination spot size.

[0041] The series of detailed descriptions listed above are only specific descriptions of the feasible implementation manners of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent implementation manners or changes made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

[0042] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0043] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A synchronous adjustment device for focusing and illumination of a surgical microscope, characterized in that, Comprising: A lens base assembly, a focusing assembly, an illumination assembly, and an angle adjustment assembly; The focusing assembly includes: a fixed lens group and a focusing lens group that are arranged coaxially with the same optical axis from the object side in sequence on the lens base assembly, and the focusing lens group can be driven to move relative to the fixed lens group along the optical axis; The illumination assembly includes: a mirror group, and a rotating shaft arranged on the mirror group; The angle adjustment assembly includes: a guiding member configured to synchronously move along the optical axis with the focusing lens group, an angle adjustment block connecting the rotating shaft, a transmission member arranged at one end of the angle adjustment block away from the rotating shaft, and a pre-tightening member; The guiding member is constructed with a guiding inclined surface that forms a sliding contact with the transmission member, and the pre-tightening member is used to drive the transmission member to remain in contact with the guiding inclined surface during the adjustment process, so as to guide the transmission member to drive the angle adjustment block and the rotating shaft to rotate together along the axis of the rotating shaft.

2. The focusing and illumination synchronous adjustment device for an operating microscope according to claim 1, wherein, The inclination direction of the guiding inclined surface forms an acute angle or an obtuse angle with the optical axis.

3. The surgical microscope focusing and illumination synchronous adjustment device according to claim 1, wherein, The lens base assembly includes: a fixed lens base for arranging the fixed lens group, and a focusing lens base for arranging the focusing lens group; The inner surface of the fixed lens base is constructed with a stepped surface perpendicular to the optical axis, and the focusing lens base is constructed with a protruding portion arranged opposite to the stepped surface along the optical axis.

4. The focusing and illumination synchronous adjustment device for an operating microscope according to claim 3, wherein, The illumination assembly further includes: a mirror barrel arranged on the fixed lens base; The mirror group includes: a mirror base arranged in the mirror barrel, and a reflection unit arranged on the mirror base; The rotating shaft is arranged on the mirror base and penetrates through the mirror barrel along a first direction, the rotating shaft is rotatably connected to the mirror barrel, and one end of the rotating shaft penetrating out of the mirror barrel is connected to the angle adjustment block.

5. The surgical microscope focusing and illumination synchronous adjustment device according to claim 4, characterized in that, The illumination assembly further includes: an elastic member sleeved outside the rotating shaft; The mirror base and the side wall of the mirror barrel opposite to each other along the first direction form a rotational contact; Both ends of the elastic member along its length direction are respectively connected to the angle adjustment block and the mirror base, or both ends of the elastic member along its length direction are respectively connected to the mirror base and the mirror barrel.

6. The focusing and illumination synchronous adjustment device for an operating microscope according to claim 4, wherein, One side of the angle adjustment block away from the rotating shaft extends along the first direction to form a transmission rod; The pre-tightening member is configured as a tension spring, the tension spring is arranged on the mirror barrel along a second direction perpendicular to the first direction, and both ends of the tension spring along the second direction are respectively connected to the mirror barrel and the transmission rod to form an elastic acting force on the transmission rod.

7. The focusing and illumination synchronous adjustment device for an operating microscope according to claim 3, wherein, The surgical microscope focusing and illumination synchronous adjustment device further includes: a driving assembly for driving the focusing lens base to move along the optical axis, and a guiding assembly for guiding the focusing lens base to move along the optical axis.

8. The focusing and illumination synchronous adjustment device for an operating microscope according to claim 7, characterized in that, The driving assembly includes: a threaded rod arranged parallel to the optical axis, a driving motor for driving the threaded rod to rotate along its axis, and an adapter block that forms a threaded fit with the threaded rod and is connected to the focusing lens base.

9. The surgical microscope focusing and illumination synchronization adjustment device according to claim 7, characterized in that, The guiding assembly includes: a first guide rail arranged on the fixed lens base, a second guide rail arranged on the focusing lens base and forming a sliding fit with the first guide rail, and the length directions of the first guide rail and the second guide rail are parallel to the optical axis.

10. The surgical microscope focusing and illumination synchronous adjustment device according to claim 7, characterized in that, The guiding assembly further includes: a guiding rail disposed on the fixed mirror base and close to the guiding member, and a movable member disposed on the guiding member, the movable member being disposed in a sliding groove of the guiding rail and forming a sliding contact with the sliding groove, the length direction of the guiding rail being parallel to the optical axis.

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