Operating microscope double-optical-path continuous zooming device

Abstract

The invention provides a double-optical-path continuous zooming device for an operating microscope, and the device comprises a first adjustment part which is used for driving a zooming lens cone contained in a zooming lens group to move in the radial direction, a first elastic positioning part abuts against the opposite side of the zooming lens cone relative to the first adjustment part, and forms a radial elastic force on the zooming lens cone, the optical axis of the zoom lens contained in the zoom lens barrel is adjusted to coincide with the optical axis of the second lens contained in the second lens group; the second adjusting part is used for driving a compensation lens cone contained in the compensation lens set to move in the radial direction, and the second elastic positioning part abuts against the side, opposite to the second adjusting part, of the compensation lens cone and forms radial elastic acting force on the compensation lens cone so that the optical axis of a compensation lens contained in the compensation lens cone can be adjusted to coincide with the optical axis of a second lens. According to the operating microscope dual-optical-path continuous zoom device disclosed by the invention, the adjustment efficiency of the zoom lens and the compensation lens is improved, and high-precision centering and long-term stability of the optical axis are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a dual - optical - path continuous zoom device for a surgical microscope. Background Art

[0002] In microsurgical operations, a surgical microscope needs to have a continuous zoom function, and achieve stepless adjustment of the magnification by adjusting the axial position of optical elements. Traditional zoom systems usually use mechanical linkage mechanisms or electronic servo controls to achieve synchronous movement of the zoom lens group and the compensation lens group.

[0003] However, in the prior - art zoom systems, during the optical axis alignment adjustment process, it is necessary to repeatedly disassemble the lens barrel to respectively calibrate the optical axes of the zoom lens and the compensation lens. The assembly and adjustment process is complex, and the optical axes of the zoom lens and the compensation lens are prone to optical axis deviation, making it difficult to maintain long - term stability of the optical axis, which affects the imaging effect.

[0004] It should be noted that the above introduction of the background art is only for the convenience of clearly and completely describing the technical solutions of the present application and facilitating the understanding of those skilled in the art. It cannot be considered that the above - mentioned 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 dual - optical - path continuous zoom device for a surgical microscope, which is used to solve various defects existing in the prior - art zoom systems, especially to improve the assembly and adjustment efficiency of the zoom lens and the compensation lens, and ensure high - precision optical axis alignment and long - term stability.

[0006] To achieve the above purpose, the present invention provides a dual - optical - path continuous zoom device for a surgical microscope, including: an optical path component, a support component, a guiding component, and a centering adjustment component. The optical path component includes: a first lens group, a zoom lens group, a compensation lens group, and a second lens group, which are arranged coaxially in sequence from the object side; The support component is used to keep the axial distance between the first lens group and the second lens group constant and the optical axis of the first lens group coincide with the optical axis of the second lens group; The guiding component is used to adjust the axial distance between the zoom lens group and the compensation lens group; Both the zoom lens group and the compensation lens group are configured with the centering adjustment component, and the centering adjustment component includes an adjusting member and an elastic positioning member; The first adjusting member disposed on the zoom lens group is used to drive the zoom lens barrel included in the zoom lens group to displace radially. The first elastic positioning member disposed on the zoom lens group abuts against the opposite side of the zoom lens barrel relative to the first adjusting member, and forms a radial elastic force on the zoom lens barrel to adjust the optical axis of the zoom lens included in the zoom lens barrel to coincide with the optical axis of the second lens included in the second lens group; The second adjusting member disposed on the compensating lens group is used to drive the compensating lens barrel included in the compensating lens group to displace radially. The second elastic positioning member disposed on the compensating lens group abuts against the opposite side of the compensating lens barrel relative to the second adjusting member, and forms a radial elastic force on the compensating lens barrel to adjust the optical axis of the compensating lens included in the compensating lens barrel to coincide with the optical axis of the second lens.

[0007] As a further improvement of the present invention, the zoom lens group includes: a zoom lens base, and the zoom lens base is provided with a first positioning groove for centering and adjusting the zoom lens barrel; The first adjusting member penetrates the zoom lens base radially and partially extends into the first positioning groove, and one end of the first adjusting member extending into the first positioning groove abuts against the zoom lens barrel; The compensating lens group includes: a compensating lens base, and the compensating lens base is provided with a second positioning groove for centering and adjusting the compensating lens barrel; The second adjusting member penetrates the compensating lens base radially and partially extends into the second positioning groove, and one end of the second adjusting member extending into the second positioning groove abuts against the compensating lens barrel.

[0008] As a further improvement of the present invention, a first limiting groove is formed on the groove wall of the first positioning groove, and a third limiting groove corresponding to the first limiting groove radially is formed by circumferentially concave the outer wall of the zoom lens barrel; The first elastic positioning member is embedded in the first limiting groove, and the first elastic positioning member is configured with a first arc-shaped inner wall that forms a point-line contact with the third limiting groove to form a radial elastic clamping on the zoom lens barrel, and one end of the first adjusting member extending into the first positioning groove abuts against the third limiting groove; A second limiting groove is formed on the groove wall of the second positioning groove, and a fourth limiting groove corresponding to the second limiting groove radially is formed by circumferentially concave the outer wall of the compensating lens barrel; The second elastic positioning member is embedded in the second limiting groove, and the second elastic positioning member is configured with a second arc-shaped inner wall that forms a point-line contact with the fourth limiting groove to form a radial elastic clamping on the compensating lens barrel, and one end of the second adjusting member extending into the second positioning groove abuts against the fourth limiting groove.

[0009] As a further improvement of the present invention, the support assembly includes: a mounting seat for configuring the second lens group, two columns disposed on the mounting seat and oppositely arranged on both sides of the second lens group, the length direction of the columns being parallel to the optical axis, and both ends of the columns in the length direction thereof are respectively connected to the mounting seat and a bridging seat for configuring the first lens group to keep the axial distance between the first lens group and the second lens group constant.

[0010] As a further improvement of the present invention, the first lens group includes: a first lens barrel, and a first lens disposed in the first lens barrel; The bridging seat is provided with a sliding groove for accommodating a part of the first lens barrel, and the first lens barrel is adjustable in the sliding groove along the horizontal plane where the sliding groove is located.

[0011] As a further improvement of the present invention, the guiding assembly includes: a rotating cylinder rotatably connected to the mounting seat, a variable magnification guiding portion and a compensation guiding portion are formed on the cylinder wall of the rotating cylinder, a first sliding seat for configuring the variable magnification lens seat and sliding along the column, a second sliding seat for configuring the compensation lens seat and sliding along the other column, a first guiding member disposed outside the first sliding seat and guided by the variable magnification guiding portion to displace axially, and a second guiding member disposed outside the second sliding seat and guided by the compensation guiding portion to displace axially.

[0012] As a further improvement of the present invention, the variable magnification guiding portion is configured as a first spiral surface arranged spirally along the axial direction around the side wall of the rotating cylinder, and the first guiding member is in rolling contact with the first spiral surface; The compensation guiding portion is configured as a second spiral surface arranged spirally along the axial direction around the side wall of the rotating cylinder, and the second guiding member is in rolling contact with the second spiral surface; When the rotating cylinder rotates relative to the mounting seat, the variable magnification lens seat and the compensation lens seat displace along the optical axis simultaneously.

[0013] As a further improvement of the present invention, the guiding assembly further includes: a first connecting piece configured on the first sliding seat, a first elastic member configured at both ends of the first connecting piece extending beyond the first sliding seat, a second connecting piece configured on the second sliding seat, and a second elastic member configured at both ends of the second connecting piece extending beyond the second sliding seat; Both ends of the first elastic member in the length direction thereof are respectively connected to the first connecting piece and the mounting seat, and both ends of the second elastic member in the length direction thereof are respectively connected to the second connecting piece and the mounting seat.

[0014] As a further improvement of the present invention, a first guiding portion is constructed on one side of the zoom lens base close to the second sliding seat, and the first guiding portion is in contact with and forms a sliding contact with the outer peripheral contour of the column portion. A second guiding portion is constructed on one side of the compensating lens base close to the first sliding seat, and the second guiding portion is in contact with and forms a sliding contact with the outer peripheral contour of the column portion.

[0015] As a further improvement of the present invention, the dual-light-path continuous zoom device of the surgical microscope further includes: a driving unit for driving the rotating cylinder to rotate relative to the mounting seat.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The zoom lens barrel is driven to move radially by the first adjusting member to correct the optical axis offset of the zoom lens until the optical axis of the zoom lens coincides with the optical axis of the second lens. The first adjusting member forms an active driving force on the zoom lens barrel, and the first elastic positioning member forms a reverse elastic force on the zoom lens barrel opposite to the first adjusting member, so that the first adjusting member and the first elastic positioning member form a two-way force balance on the zoom lens barrel, so as to maintain the position stability of the zoom lens barrel after adjustment through the cooperation of the first adjusting member and the first elastic positioning member, prevent the optical axis from shifting, and ensure the accuracy and long-term stability of the coincidence of the optical axis of the zoom lens and the optical axis of the second lens group; The compensating lens barrel is driven to move radially by the second adjusting member to correct the optical axis offset of the compensating lens until the optical axis of the compensating lens coincides with the optical axis of the second lens. The second adjusting member forms an active driving force on the compensating lens barrel, and the second elastic positioning member forms a reverse elastic force on the compensating lens barrel opposite to the second adjusting member, so that the second adjusting member and the second elastic positioning member form a two-way force balance on the compensating lens barrel, so as to maintain the position stability of the compensating lens barrel after adjustment through the cooperation of the second adjusting member and the second elastic positioning member, prevent the optical axis from shifting, and ensure the accuracy and long-term stability of the coincidence of the optical axis of the compensating lens and the optical axis of the second lens group; So as to realize the coaxial light of the first lens group, the zoom lens group, the compensating lens group and the second lens group, ensure the stable imaging quality during the zoom process, and can complete the optical axis calibration without disassembling the optical elements, shorten the installation and adjustment time, and improve the installation and adjustment efficiency of the zoom lens and the compensating lens. Description of the Drawings

[0017] Figure 1 It is an overall schematic diagram of the dual-light-path continuous zoom device of the surgical microscope disclosed by the present invention; Figure 2 It is an axial sectional schematic diagram of the dual-light-path continuous zoom device of the surgical microscope; Figure 3 It is a schematic diagram of the first sliding seat and the second sliding seat respectively connecting the first column and the second column; Figure 4Optical path schematic diagram of the first lens group, zoom lens group, compensating lens group and second lens group; Figure 5 Schematic diagram of the connection between the mounting base and the rotating cylinder; Figure 6 Schematic diagram of the connection between the compensating lens base and the second sliding base; Figure 7 Schematic diagram of the connection between the zoom lens base and the first sliding base; Figure 8 Radial sectional schematic diagram of the second adjusting member abutting against the compensating lens barrel; Figure 9 Radial sectional schematic diagram of the first adjusting member abutting against the zoom lens barrel. Specific embodiments

[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, and 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 to Figures 1 to 9 A specific embodiment of a dual - optical - path continuous zoom device for a surgical microscope disclosed herein.

[0020] The dual - optical - path continuous zoom device 100 for a surgical microscope disclosed in the present application adopts dual imaging optical paths, namely imaging optical path P1 and imaging optical path P2. The first lens group 11, zoom lens group 12, compensating lens group 13 and second lens group 14 are all arranged in the imaging optical path P1 and the imaging optical path P2. The first lens group 11, zoom lens group 12, compensating lens group 13 and second lens group 14 in the imaging optical path P1 are arranged along the optical axis Z1, and the first lens group 11, zoom lens group 12, compensating lens group 13 and second lens group 14 in the imaging optical path P2 are arranged along the optical axis Z2.

[0021] It should be noted that in the embodiments of the present application, the term "axial direction" refers to the direction parallel to the optical axis Z1 / Z2. The term "radial direction" refers to any direction in the plane perpendicular to the optical axis Z1 / Z2. In the perspective shown in Figures 1 to 4 , as shown in Figure 4 , the direction where the measured object W is located is the object side, and the direction opposite to the measured object W is the image side.

[0022] Referring to Figures 1 to 7 shown, in this embodiment, the dual - optical - path continuous zoom device 100 for a surgical microscope includes: an optical path assembly 10, a support assembly 20, a guiding assembly 30, and a centering adjustment assembly 40.

[0023] The optical path assembly 10 includes: a first lens group 11, a zoom lens group 12, a compensating lens group 13, and a second lens group 14, which are arranged coaxially in sequence from the object side; the support assembly 20 is used to keep the axial distance between the first lens group 11 and the second lens group 14 constant and the optical axes of the first lens group 11 and the second lens group 14 coincident; the guiding assembly 30 is used to adjust the axial distance between the zoom lens group 12 and the compensating lens group 13.

[0024] The relative positions of the first lens group 11 and the second lens group 14 are fixed by the support assembly 20 to keep the axial distance between the first lens group 11 and the second lens group 14 constant and ensure that the optical axes of the first lens group 11 and the second lens group 14 coincide.

[0025] The guiding assembly 30 is arranged on the support assembly 20 and is used to simultaneously guide the compensating lens group 13 to move along the optical axis relative to the second lens group 14 and the zoom lens group 12 to move along the optical axis relative to the first lens group 11. The axial movement of the zoom lens group 12 and the compensating lens group 13 is controlled simultaneously by the guiding assembly 30 to adjust the axial distance between the zoom lens group 12 and the compensating lens group 13. Stepless continuous zoom is achieved through the zoom lens group 12 to adjust the magnification to meet different observation requirements, and the compensating lens group 13 corrects aberration to ensure a clear image plane. The first lens group 11 receives light from the object side. After passing through the zoom lens group 12 and the compensating lens group 13, the light enters the second lens group 14, and parallel light is output through the second lens group 14. The surgical microscope dual optical path continuous zoom device 100 is coupled with an imaging module (not shown) to form a final clear image.

[0026] Both the zoom lens group 12 and the compensating lens group 13 are provided with centering adjustment assemblies 40. The centering adjustment assembly 40 includes an adjusting member 41 and an elastic positioning member 42; the adjusting member 41 includes a first adjusting member 411 and a second adjusting member 412, and the elastic positioning member 42 includes a first elastic positioning member 421 and a second elastic positioning member 422.

[0027] See Figure 2 and Figure 3 as well as Figure 7 shown, a zoom lens 124 is arranged in the zoom lens barrel 121. The first adjusting member 411 arranged on the zoom lens group 12 is used to drive the zoom lens barrel 121 included in the zoom lens group 12 to move radially. The first elastic positioning member 421 arranged on the zoom lens group 12 abuts against the opposite side of the zoom lens barrel 121 relative to the first adjusting member 411 and forms a radial elastic force on the zoom lens barrel 121 to adjust the coincidence of the optical axis of the zoom lens 124 included in the zoom lens barrel 121 and the optical axis of the second lens 142 included in the second lens group 14.

[0028] The varifocal lens barrel 121 is driven by the first adjusting member 411 to move radially, so as to correct the optical axis offset of the varifocal lens 124. After the optical axis of the varifocal lens 124 coincides with the optical axis of the second lens 142, the first adjusting member 411 is locked. During the optical axis alignment adjustment process, the first elastic positioning member 421 is deformed by the extrusion of the varifocal lens barrel 121 to store elastic potential energy, and an elastic acting force (hereinafter referred to as "elastic force") is applied to the varifocal lens barrel 121. After the adjustment is completed, the first elastic positioning member 421 releases the elastic potential energy, applies an elastic force to the varifocal lens barrel 121 radially, and balances with the radial locking force of the first adjusting member 411, so that the varifocal lens barrel 121 is stabilized at the adjusted position (that is, the position where the optical axis of the varifocal lens 124 coincides with the optical axis of the second lens 142), so as to maintain the coincidence of the optical axis of the varifocal lens 124 and the optical axis of the second lens 142.

[0029] Refer Figure 2 to Figure 3 and Figure 6 As shown, a compensation lens 134 is arranged in the compensation lens barrel 131. The second adjusting member 412 arranged in the compensation lens group 13 is used to drive the compensation lens barrel 131 included in the compensation lens group 13 to displace radially. The second elastic positioning member 422 arranged in the compensation lens group 13 abuts against the opposite side of the compensation lens barrel 131 relative to the second adjusting member 412 to form a radial elastic acting force on the compensation lens barrel 131, so as to adjust the coincidence of the optical axis of the compensation lens 134 included in the compensation lens barrel 131 and the optical axis of the second lens 142 included in the second lens group 14.

[0030] The compensation lens barrel 131 is driven by the second adjusting member 412 to move radially, so as to correct the optical axis offset of the compensation lens 134. After the optical axis of the compensation lens 134 coincides with the optical axis of the second lens 142, the second adjusting member 412 is locked. During the optical axis alignment adjustment process, the second elastic positioning member 422 is deformed by the extrusion of the compensation lens barrel 131 to store elastic potential energy, and an elastic force is applied to the compensation lens barrel 131. After the adjustment is completed, the second elastic positioning member 422 releases the elastic potential energy, applies an elastic force to the compensation lens barrel 131 radially, and balances with the radial locking force of the second adjusting member 412, so that the compensation lens barrel 131 is stabilized at the adjusted position (that is, the position where the optical axis of the compensation lens 134 coincides with the optical axis of the second lens 142), so as to maintain the coincidence of the optical axis of the compensation lens 134 and the optical axis of the second lens 142.

[0031] The dual-light-path continuously variable magnification device 100 of the surgical microscope disclosed in this application forms an active driving force on the variable magnification lens barrel 121 through the first adjusting member 411, and the first elastic positioning member 421 forms a reverse elastic force opposite to the first adjusting member 411 on the variable magnification lens barrel 121, so that the first adjusting member 411 and the first elastic positioning member 421 form a two-way force balance on the variable magnification lens barrel 121, so as to cooperate with the first adjusting member 411 and the first elastic positioning member 421 to maintain the position stability of the variable magnification lens barrel 121 after adjustment, prevent the optical axis from shifting, and ensure the accuracy and long-term stability of the optical axis of the variable magnification lens 124 coinciding with the optical axis of the second lens group 14; form an active driving force on the compensation lens barrel 131 through the second adjusting member 412, and the second elastic positioning member 422 forms a reverse elastic force opposite to the second adjusting member 412 on the compensation lens barrel 131, so that the second adjusting member 412 and the second elastic positioning member 422 form a two-way force balance on the compensation lens barrel 131, so as to cooperate with the second adjusting member 412 and the second elastic positioning member 422 to maintain the position stability of the compensation lens barrel 131 after adjustment, prevent the optical axis from shifting, and ensure the accuracy and long-term stability of the optical axis of the compensation lens 134 coinciding with the optical axis of the second lens group 14; so as to realize the coaxiality of the first lens group 11, the variable magnification lens group 12, the compensation lens group 13 and the second lens group 14, ensure the stable imaging quality during the variable magnification process, and can complete the optical axis calibration without disassembling the optical elements, shorten the installation and adjustment time, and improve the installation and adjustment efficiency of the variable magnification lens 124 and the compensation lens 134.

[0032] Exemplarily, the first lens group 11 is configured as a positive focal length lens group, the variable magnification lens group 12 is configured as a negative focal length lens group, the compensation lens group 13 is configured as a negative focal length lens group, the second lens group 14 is configured as a positive focal length lens group, the first lens group 11 and the second lens group 14 maintain a fixed distance, and when the variable magnification lens group 12 and the compensation lens group 13 move axially, stepless continuous variable magnification is achieved through the variable magnification lens group 12 to adjust the magnification to meet different observation needs, and the compensation lens group 13 corrects aberrations to ensure a clear image plane.

[0033] In some examples, referring Figure 2 、 Figure 3 to Figure 7 as shown, the variable magnification lens group 12 includes: a variable magnification lens seat 122, and the variable magnification lens seat 122 is provided with a first positioning groove 123 for centering and adjusting the variable magnification lens barrel 121; the first adjusting member 411 penetrates the variable magnification lens seat 122 in the radial direction and partially extends into the first positioning groove 123, and one end of the first adjusting member 411 extending into the first positioning groove 123 abuts against the variable magnification lens barrel 121. The inner bottom surface 1232 of the first positioning groove 123 axially supports the variable magnification lens barrel 121 and contacts the variable magnification lens barrel 121 to form a radial contact surface, so that the variable magnification lens barrel 121 can be displaced radially on the inner bottom surface 1232 of the first positioning groove 123.

[0034] The first adjusting member 411 (such as a differential screw) penetrates the varifocal lens holder 122 in the radial direction, and its end abuts against the varifocal lens barrel 121. By rotating the first adjusting member 411, the varifocal lens barrel 121 is driven to displace radially on the inner bottom surface 1232 of the first positioning groove 123 by a micron level, so as to adjust the radial position of the varifocal lens 124. After the optical axis of the varifocal lens 124 coincides with the optical axis of the second lens 142, the first adjusting member 411 is locked to maintain the radial locking force on the varifocal lens barrel 121, and cooperate with the first elastic positioning member 421 to form a reverse elastic force opposite to the first adjusting member 411 on the varifocal lens barrel 121, so that the varifocal lens barrel 121 is stabilized at the adjusted position.

[0035] In some examples, referring Figure 2 、 Figure 3 and Figure 6 As shown, the compensation lens group 13 includes: a compensation lens holder 132, and a second positioning groove 133 for centering and adjusting the compensation lens barrel 131 is formed in the compensation lens holder 132; the second adjusting member 412 penetrates the compensation lens holder 132 in the radial direction and partially extends into the second positioning groove 133, and one end of the second adjusting member 412 extending into the second positioning groove 133 abuts against the compensation lens barrel 131. The inner bottom surface 1332 of the second positioning groove 133 axially supports the compensation lens barrel 131 and contacts the compensation lens barrel 131 to form a radial contact surface, so that the compensation lens barrel 131 can displace radially on the inner bottom surface 1332 of the second positioning groove 133.

[0036] The second adjusting member 412 (such as a differential screw) penetrates the compensation lens holder 132 in the radial direction, and its end abuts against the compensation lens barrel 131. By rotating the second adjusting member 412, the compensation lens barrel 131 is driven to displace radially on the inner bottom surface 1332 of the second positioning groove 133 by a micron level, so as to adjust the radial position of the compensation lens 134. After the optical axis of the compensation lens 134 coincides with the optical axis of the second lens group 14, the second adjusting member 412 is locked to maintain the radial locking force on the compensation lens barrel 131, and cooperate with the second elastic positioning member 422 to form a reverse elastic force opposite to the second adjusting member 412 on the compensation lens barrel 131, so that the compensation lens barrel 131 is stabilized at the adjusted position.

[0037] Preferably, in the present embodiment, two first adjusting members 411 are respectively provided outside the zoom lens group 12 included in the imaging optical path P1 and the imaging optical path P2. The two first adjusting members 411 are equidistantly arranged relative to the first elastic positioning member 421. By synchronously and individually fine-tuning the two first adjusting members 411, the radial displacement of the zoom lens barrel 121 can be accurately controlled, ensuring that the optical axis of the zoom lens 124 coincides with the optical axis of the second lens 142, and avoiding the tilt of the zoom lens barrel 121 caused by unilateral force application, thereby improving the adjustment stability and accuracy. Two second adjusting members 412 are respectively provided outside the compensation lens group 13 included in the imaging optical path P1 and the imaging optical path P2. The two second adjusting members 412 are equidistantly arranged relative to the second elastic positioning member 422. By synchronously and individually fine-tuning the two second adjusting members 412, the radial displacement of the compensation lens barrel 131 can be accurately controlled, ensuring that the optical axis of the compensation lens barrel 131 coincides with the optical axis of the second lens 142, and avoiding the tilt of the compensation lens barrel 131 caused by unilateral force application, thereby improving the adjustment stability and accuracy.

[0038] Preferably, in the present embodiment, one end of the first adjusting member 411 abutting against the zoom lens barrel 121 and one end of the second adjusting member 412 abutting against the compensation lens barrel 131 are both configured to be spherical. The spherical ends (not labeled) of the first adjusting member 411 and the second adjusting member 412 respectively form point contacts (or contacts with a very small area) with the zoom lens barrel 121 and the compensation lens barrel 131. Thereby, sliding friction can be reduced, making the optical axis alignment adjustment process smoother and avoiding jamming, so as to improve the accuracy of micron-level displacement.

[0039] In some examples, referring Figure 2 、 Figure 3 to Figure 7 and Figure 9 as shown, a first limiting groove 1231 is formed by opening the groove wall of the first positioning groove 123, and a third limiting groove 1211 corresponding to the first limiting groove 1231 in the radial direction is recessed along the circumferential direction on the outer wall of the zoom lens barrel 121; the first elastic positioning member 421 is embedded in the first limiting groove 1231, and the first elastic positioning member 421 is constructed with a first arc-shaped inner wall 4211 that forms a point-line contact with the third limiting groove 1211 to form a radial elastic clamping on the zoom lens barrel 121, and one end of the first adjusting member 411 extending into the first positioning groove 123 abuts against the third limiting groove 1211.

[0040] The first limiting groove 1231 is used to embed the first elastic positioning member 421 (such as a spring wire) to fix the installation position of the first elastic positioning member 421 and prevent the first elastic positioning member 421 from detaching from the variable magnification lens base 122. A part of the inner wall of the first elastic positioning member 421 is processed into an arc-shaped curved surface to form a first arc-shaped inner wall 4211. Point-line contact is formed between the first arc-shaped inner wall 4211 and the third limiting groove 1211 to achieve elastic clamping of the third limiting groove 1211 in the radial direction. At the same time, one end of the first adjusting member 411 extending into the first positioning groove 123 abuts against the third limiting groove 1211 to form a radial locking force on the variable magnification lens barrel 121. The first elastic positioning member 421 cooperates with the first adjusting member 411 to jointly restrain the variable magnification lens barrel 121 from displacing in the radial and / or axial directions, so that the variable magnification lens barrel 121 is stabilized at the adjusted position.

[0041] Refer Figure 2 , Figure 3 and Figure 6 and Figure 8 As shown, a second limiting groove 1331 is formed by opening the groove wall of the second positioning groove 133. A fourth limiting groove 1311 corresponding to the second limiting groove 1331 in the radial direction is recessed in the outer wall of the compensating lens barrel 131 along the circumferential direction. The second elastic positioning member 422 is embedded in the second limiting groove 1331. The second elastic positioning member 422 is configured with a second arc-shaped inner wall 4221 that forms point-line contact with the fourth limiting groove 1311 to form radial elastic clamping on the compensating lens barrel 131. One end of the second adjusting member 412 extending into the second positioning groove 133 abuts against the fourth limiting groove 1311.

[0042] The second limiting groove 1331 is used to embed the second elastic positioning member 422 (such as a spring wire) to fix the installation position of the second elastic positioning member 422 and prevent the second elastic positioning member 422 from detaching from the compensating lens base 132. A part of the inner wall of the second elastic positioning member 422 is processed into an arc-shaped curved surface to form a second arc-shaped inner wall 4221. Point-line contact is formed between the second arc-shaped inner wall 4221 and the fourth limiting groove 1311 to achieve elastic clamping of the fourth limiting groove 1311 in the radial direction. At the same time, one end of the second adjusting member 412 extending into the second positioning groove 133 abuts against the fourth limiting groove 1311 to form a radial locking force on the compensating lens barrel 131. The second elastic positioning member 422 cooperates with the second adjusting member 412 to jointly restrain the compensating lens barrel 131 from displacing in the radial and / or axial directions, so that the compensating lens barrel 131 is stabilized at the adjusted position.

[0043] Preferably, in this embodiment, the axial cross-sectional shapes of the third limiting groove 1211 and the fourth limiting groove 1311 are configured as triangles.

[0044] Refer Figure 9As shown, the first arc-shaped inner wall 4211 of the first elastic positioning member 421 forms a point-line contact with the lower surface 1212 of the third limiting groove 1211. Through the active driving force formed by the first adjusting member 411 on the third limiting groove 1211 and the reverse elastic force formed by the first arc-shaped inner wall 4211 of the first elastic positioning member 421 on the lower surface 1212 of the third limiting groove 1211, the first elastic positioning member 421 and the first adjusting member 411 can jointly press the zoom lens barrel 121 tightly against the radial contact surface of the zoom lens base 122, so that the zoom lens barrel 121 and the zoom lens base 122 always maintain axial close contact, so that the zoom lens barrel 121 is stable at the adjusted position, and maintain the long-term stability of the optical axis of the zoom lens barrel 121 coinciding with the optical axis of the second lens 142.

[0045] As shown Figure 8 As shown, the second arc-shaped inner wall 4221 of the second elastic positioning member 422 forms a point-line contact with the lower surface 1312 of the fourth limiting groove 1311. Through the active driving force formed by the second adjusting member 412 on the fourth limiting groove 1311 and the reverse elastic force formed by the second arc-shaped inner wall 4221 of the second elastic positioning member 422 on the lower surface 1312 of the fourth limiting groove 1311, the second elastic positioning member 422 and the second adjusting member 412 can jointly press the compensating lens barrel 131 tightly against the radial contact surface of the compensating lens base 132, so that the compensating lens barrel 131 and the compensating lens base 132 always maintain axial close contact, so that the compensating lens barrel 131 is stable at the adjusted position, and maintain the long-term stability of the optical axis of the compensating lens 134 coinciding with the optical axis of the second lens 142.

[0046] As shown Figure 1 As shown Figure 5 As shown, the support assembly 20 includes: a mounting seat 21 for configuring the second lens group 14, two columns disposed on the mounting seat 21 and relatively arranged on both sides of the second lens group 14. The length direction of the columns is parallel to the optical axis. The two ends of the columns along their length direction are respectively connected to the mounting seat 21 and the bridging seat 24 for configuring the first lens group 11, so as to keep the axial distance between the first lens group 11 and the second lens group 14 constant. The two ends of the columns are respectively connected to the mounting seat 21 and the bridging seat 24 through threads or flanges. The support assembly 20 forms a rigid support structure through the mounting seat 21 and two parallel columns, so as to ensure that the axial distance between the first lens group 11 and the second lens group 14 is constant, and maintain the coincidence of the optical axes of the first lens group 11 and the second lens group 14. The second lens group 14 includes a second lens barrel 141 disposed on the mounting seat 21 and a second lens 142 disposed in the second lens barrel 141.

[0047] As shown Figure 2As shown, the support assembly 20 further includes: The first lens group 11 includes: a first lens barrel 111, and a first lens 112 disposed within the first lens barrel 111; the bridging base 24 is formed with a sliding groove 241 for accommodating the first lens barrel 111, and the first lens barrel 111 is adjustable along the horizontal plane where the sliding groove 241 is located within the sliding groove 241. By controlling the first lens barrel 111 to perform translational adjustment within the sliding groove 241 and along the horizontal plane where the sliding groove 241 is located, to calibrate the coincidence of the optical axis of the first lens 112 with the reference optical axis (such as the optical axis of the second lens 142), and the first lens group 11 is fixed to the bridging base 24 through a locking unit (not shown) (such as a screw or a pressing block) to fix the adjusted position of the first lens group 11 (i.e., the position where the optical axis of the first lens 112 coincides with the optical axis of the second lens 142), and maintain the coincidence of the optical axes of the first lens 112 and the second lens 142.

[0048] Refer Figures 1 to 3 to Figure 5 As shown, the guiding assembly 30 includes: a rotating cylinder 31 rotatably connected to the mounting base 21, the barrel wall of the rotating cylinder 31 is configured with a variable magnification guiding portion 311 and a compensation guiding portion 312, a first sliding seat 32 configured with a variable magnification lens base 122 and sliding along a column, a second sliding seat 33 configured with a compensation lens base 132 and sliding along another column, a first guiding member 34 (such as a bearing) disposed outside the first sliding seat 32 and guided by the variable magnification guiding portion 311 to displace axially, and a second guiding member 35 (such as a bearing) disposed outside the second sliding seat 33 and guided by the compensation guiding portion 312 to displace axially. By rotating the rotating cylinder 31 relative to the mounting base 21 and simultaneously driving the variable magnification guiding portion 311 and the compensation guiding portion 312 on the barrel wall of the rotating cylinder 31 to rotate, the variable magnification guiding portion 311 and the compensation guiding portion 312 respectively push the first guiding member 34 and the second guiding member 35 to move linearly through their own rotational movements, so as to simultaneously drive the variable magnification lens group 12 and the compensation lens group 13 to displace axially, thereby realizing continuous adjustment of the magnification. At the same time, the first sliding seat 32 and the second sliding seat 33 respectively slide along the first column 22 and the second column 23 to ensure that the movement trajectories of the variable magnification lens group 12 and the compensation lens group 13 are parallel to the optical axis and avoid deviation.

[0049] Refer Figures 1 to 3 to Figure 5As shown, the zoom guiding portion 311 is configured as a first helical surface arranged in a spiral shape along the axial direction around the side wall of the rotating cylinder 31, and the first guiding member 34 is in rolling contact with the first helical surface; the compensation guiding portion 312 is configured as a second helical surface arranged in a spiral shape along the axial direction around the side wall of the rotating cylinder 31, and the second guiding member 35 is in rolling contact with the second helical surface; when the rotating cylinder 31 rotates relative to the mounting base 21, the zoom lens holder 122 and the compensation lens holder 132 move along the optical axis simultaneously. When the rotating cylinder 31 rotates relative to the mounting base 21, the first guiding member 34 rolls along the zoom guiding portion 311 (the first helical surface) to push the first sliding seat 32 to move axially along the first upright post 22, and the second guiding member 35 simultaneously rolls along the compensation guiding portion 312 (the second helical surface) to push the second sliding seat 33 to move axially along the second upright post 23. The first sliding seat 32 and the second sliding seat 33 drive the zoom lens group 12 and the compensation lens group 13 to move axially simultaneously, so as to change the magnification through the zoom lens group 12 and correct the aberration through the compensation lens group 13.

[0050] Refer to Figure 1 , Figure 6 and Figure 7 As shown, the guiding assembly 30 further includes: a first connecting piece 36 disposed on the first sliding seat 32, a first elastic member 37 (such as a spring) disposed on both ends of the first connecting piece 36 extending beyond the first sliding seat 32, a second connecting piece 38 disposed on the second sliding seat 33, and a second elastic member 39 (such as a spring) disposed on both ends of the second connecting piece 38 extending beyond the second sliding seat 33; both ends of the first elastic member 37 are respectively connected to the first connecting piece 36 and the mounting base 21 along its length direction, and both ends of the second elastic member 39 are respectively connected to the second connecting piece 38 and the mounting base 21 along its length direction. Both ends of the first elastic member 37 are respectively fixed to the first connecting piece 36 and the mounting base 21 to form an axial elastic force, and the elastic acting force of the first elastic member 37 is transmitted to the first sliding seat 32 through the first connecting piece 36, so that the first guiding member 34 and the zoom guiding portion 311 always maintain rolling contact during the entire movement process, and suppress the rebound vibration that may occur when the first sliding seat 32 moves axially, improve the zoom accuracy, and solve the problem that in the traditional zoom system during rapid zooming, the sliding seat configured with the zoom lens generates rebound vibration due to inertia or mechanical clearance, resulting in a temporary loss of magnification accuracy. Both ends of the second elastic member 39 are respectively fixed to the second connecting piece 38 and the mounting base 21 to form an axial elastic force, and the elastic acting force of the second elastic member 39 is transmitted to the second sliding seat 33 through the second connecting piece 38, so that the second guiding member 35 and the compensation guiding portion 312 always maintain rolling contact during the entire movement process, and suppress the rebound vibration that may occur when the second sliding seat 33 moves axially, improve the image plane stability.

[0051] Refer to Figure 3 , Figure 6 and Figure 7As shown, the zoom lens mount 122 is constructed with a first guide end 1221 that conforms to the outer contour of the column portion, forming a sliding contact with the column. The compensating lens mount 132 is constructed with a second guide end 1321 that conforms to the outer contour of the column portion, forming a sliding contact with the column. The first guide end 1221 forms a conforming sliding contact with the contour of the second column 23, and the second guide end 1321 forms a conforming sliding contact with the contour of the first column 22. This further guides the axial movement of the zoom lens mount 122 and the compensating lens mount 132, preventing radial offset.

[0052] Ginseng Figure 1 and Figure 5 As shown, the dual-optical-path continuous magnification device 100 for a surgical microscope further includes a drive unit 50 (e.g., a stepper motor) for driving the rotating cylinder 31 to rotate relative to the mounting base 21. The drive unit 50 is disposed on the mounting base 21. A gear structure (not shown) is circumferentially disposed on the outer wall of the rotating cylinder 31. The output end of the drive unit 50 is provided with a gear (not shown) that meshes with the gear structure. The drive unit 50 precisely controls the rotation angle and speed of the rotating cylinder 31, achieving stepless magnification and dynamic aberration correction, thereby improving the accuracy, reliability, and integration of the dual-optical-path continuous magnification device 100 for a surgical microscope.

[0053] Ginseng Figure 2 and Figure 5 As shown, the rotating cylinder 31 is constructed with a rotating portion 313 that is rotatably connected to the mounting base 21. The surgical microscope dual-optical path continuous magnification device 100 also includes two spring plates 26 symmetrically arranged on either side of the rotating cylinder 31. The spring plates 26 extend to form spring portions 261 (e.g., leaf springs) that engage the rotating portion 313. The rotating portion 313 ensures smooth rotation of the rotating cylinder 31 and reduces shaking. The spring plates 26, through the elastic pressure of the spring portions 261, press against the rotating portion 313, reducing axial clearance between the rotating cylinder 31 and the mounting base 21, thereby preventing displacement errors during magnification change.

[0054] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

[0055] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described 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, in any regard, the embodiments should be regarded as exemplary and non-limiting. 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 embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0056] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains 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 dual - optical - path continuous zoom device for an operating microscope, characterized in that, Comprising: An optical path component, a support component, a guiding component, and a centering adjustment component. The optical path component includes: a first lens group, a zoom lens group, a compensation lens group, and a second lens group that are sequentially arranged on the same optical axis starting from the object side; The support component is used to keep the axial distance between the first lens group and the second lens group constant and the optical axes of the first lens group and the second lens group coincident; The guiding component is used to adjust the axial distance between the zoom lens group and the compensation lens group; Both the zoom lens group and the compensation lens group are configured with the centering adjustment component, and the centering adjustment component includes an adjustment member and an elastic positioning member; The first adjustment member configured on the zoom lens group is used to drive the zoom lens barrel included in the zoom lens group to displace radially. The first elastic positioning member configured on the zoom lens group abuts against the opposite side of the zoom lens barrel relative to the first adjustment member and forms a radial elastic force on the zoom lens barrel to adjust the optical axis of the zoom lens included in the zoom lens barrel to coincide with the optical axis of the second lens included in the second lens group; The second adjustment member configured on the compensation lens group is used to drive the compensation lens barrel included in the compensation lens group to displace radially. The second elastic positioning member configured on the compensation lens group abuts against the opposite side of the compensation lens barrel relative to the second adjustment member and forms a radial elastic force on the compensation lens barrel to adjust the optical axis of the compensation lens included in the compensation lens barrel to coincide with the optical axis of the second lens.

2. The dual optical path continuously variable magnification device for surgical microscope according to claim 1, characterized in that, The zoom lens group includes: a zoom lens base, and the zoom lens base is formed with a first positioning groove for centering adjustment of the zoom lens barrel; The first adjustment member penetrates the zoom lens base radially and partially extends into the first positioning groove, and one end of the first adjustment member extending into the first positioning groove abuts against the zoom lens barrel; The compensation lens group includes: a compensation lens base, and the compensation lens base is formed with a second positioning groove for centering adjustment of the compensation lens barrel; The second adjustment member penetrates the compensation lens base radially and partially extends into the second positioning groove, and one end of the second adjustment member extending into the second positioning groove abuts against the compensation lens barrel.

3. The dual-light-path continuously variable magnification device for a surgical microscope according to claim 2, wherein, A first limiting groove is formed on the groove wall of the first positioning groove, and a third limiting groove corresponding to the first limiting groove in the radial direction is recessed along the circumference on the outer wall of the zoom lens barrel; The first elastic positioning member is embedded in the first limiting groove, and the first elastic positioning member is configured with a first arc-shaped inner wall that forms a point-line contact with the third limiting groove to form a radial elastic clamping on the zoom lens barrel. One end of the first adjustment member extending into the first positioning groove abuts against the third limiting groove; A second limiting groove is formed on the groove wall of the second positioning groove, and a fourth limiting groove corresponding to the second limiting groove in the radial direction is recessed along the circumference on the outer wall of the compensation lens barrel; The second elastic positioning member is embedded in the second limiting groove, and the second elastic positioning member is configured with a second arc-shaped inner wall that forms a point-line contact with the fourth limiting groove to form a radial elastic clamping on the compensation lens barrel. One end of the second adjustment member extending into the second positioning groove abuts against the fourth limiting groove.

4. The dual-light-path continuously variable magnification device for an operating microscope according to claim 1, characterized in that The support assembly includes: a mounting seat for configuring the second lens group, two columns configured on the mounting seat and oppositely disposed on both sides of the second lens group, the length direction of the columns being parallel to the optical axis, and both ends of the columns along their length directions being respectively connected to the mounting seat and a bridging seat for configuring the first lens group, so as to keep the axial distance between the first lens group and the second lens group constant.

5. The dual-light-path continuous zoom device for surgical microscopes according to claim 4, wherein, The first lens group includes: a first lens barrel, and a first lens configured in the first lens barrel; The bridging seat is provided with a chute for accommodating part of the first lens barrel, and the first lens barrel is adjustable in the horizontal plane where the chute is located within the chute.

6. The dual optical path continuously variable magnification device for a surgical microscope according to claim 4, wherein The guiding assembly includes: a rotating cylinder rotatably connected to the mounting seat, a variable magnification guiding portion and a compensation guiding portion being formed on the cylinder wall of the rotating cylinder, a first sliding seat for configuring the variable magnification lens seat and sliding along the column, a second sliding seat for configuring the compensation lens seat and sliding along the other column, a first guiding member configured outside the first sliding seat and guided by the variable magnification guiding portion to displace axially, and a second guiding member configured outside the second sliding seat and guided by the compensation guiding portion to displace axially.

7. The dual optical path continuously variable magnification device for surgical microscope according to claim 6, wherein, The variable magnification guiding portion is configured as a first spiral surface arranged spirally along the axial direction around the side wall of the rotating cylinder, and the first guiding member is in rolling contact with the first spiral surface; The compensation guiding portion is configured as a second spiral surface arranged spirally along the axial direction around the side wall of the rotating cylinder, and the second guiding member is in rolling contact with the second spiral surface; When the rotating cylinder rotates relative to the mounting seat, the variable magnification lens seat and the compensation lens seat displace along the optical axis simultaneously.

8. The dual-light-path continuous zoom device for surgical microscopes according to claim 6, wherein, The guiding assembly further includes: a first connecting piece configured on the first sliding seat, a first elastic member configured at both ends of the first connecting piece extending beyond the first sliding seat, a second connecting piece configured on the second sliding seat, and a second elastic member configured at both ends of the second connecting piece extending beyond the second sliding seat; Both ends of the first elastic member along its length direction are respectively connected to the first connecting piece and the mounting seat, and both ends of the second elastic member along its length direction are respectively connected to the second connecting piece and the mounting seat.

9. The dual-light-path continuously variable magnification device for an operating microscope according to claim 6, wherein, A first guiding portion is formed on one side of the variable magnification lens seat close to the second sliding seat, and the first guiding portion is in contact with and forms a sliding contact with the outer peripheral contour of part of the column; A second guiding portion is formed on one side of the compensation lens seat close to the first sliding seat, and the second guiding portion is in contact with and forms a sliding contact with the outer peripheral contour of part of the column.

10. The dual-light-path continuous zoom device for an operating microscope according to claim 6, wherein, The surgical microscope double - optical - path continuous variable magnification device further includes: a driving unit for driving the rotating cylinder to rotate relative to the mounting seat.

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