Optical adapter device and operating microscope

Abstract

An optical adapter device and an operating microscope with the optical adapter device comprising a main body shell (20) and an optical lens assembly.Both ends of the main body shell (20) serve to connect the operating microscope and the digital camera equipment (3), and the main body shell (20) comprises a first shell segment (200), a second shell segment (201), and a third shell segment (202), wherein the first shell segment (200) extends at least partially in the direction of the first axis (a); one end of the second shell segment (201) is connected to the other end of the first shell segment (200), and the second shell segment (201) extends at least in the direction of the second axis (b); one end of the third shell segment (202) is connected to the other end of the second shell segment (201), and the third shell segment (202) extends at least in the direction of the third axis (c), wherein the first axis (a) and the third axis (c) each intersect with the second axis (b).The optical adapter device is adapted to beam splitters of different designs and is suitable for a wider range of microscope bodies; it is suitable for various digital devices and makes observation and recording images clearer, operation more flexible and diagnostic efficiency improved; it is characterized by modular production and assembly, simpler construction, good expandability and low cost.

Description

Technical area

[0001] The present invention belongs to the technical field of medical devices and relates in particular to an optical adapter device and a surgical microscope equipped with such an optical adapter device. Background technology

[0002] A microscope is a precision optical instrument suitable for observing microscopic substances and is widely used in scientific research, medicine, and other fields. In microsurgery, the surgical microscope is an indispensable tool for physicians. Given the demands of clinical scientific research, teaching, consulting, dispute resolution, etc., it is necessary to create clear image records of the surgical process and surgical results. The currently most widely used solution is to install a beam splitter between the microscope body and the binocular tube, and to connect digital devices to the beam splitter branch by adding an optical adapter device. As described in the Fig. 1 and Fig.As shown in Figure 2, most of the optical adapters 2' on existing surgical microscopes are generally L-shaped and arranged on one or both sides of the microscope body 1'. In the figure, the upper part of the microscope body 1' is connected to a beam splitter 11', optical adapters 2' are connected to both sides of the beam splitter 11', and the optical adapter 2' is connected to a digital camera equipment 3'. When the beam splitter 11' is connected to a digital camera, the optical adapter 2' can only adjust the angle in the vertical direction but cannot rotate in the horizontal direction. It is not conducive to the assistant recording image data during the operation, which greatly affects the efficiency of the operation and cannot meet the application requirements of multiple scenarios.

[0003] During actual operation, users often need to observe the images captured by digital devices in real time and control the digital devices to take photos or videos. In most cases, due to limitations in the operating position, users need to turn their heads or even leave their working position to observe the status of the digital device, making it difficult to control the digital device conveniently and quickly.

[0004] Consider the patented surgical microscope with disclosure number CN211123465U, which integrates an existing beam splitter into the surgical microscope body, connects the binocular tube to the front of the microscope body, and connects the optical adapter to the back of the microscope body, which improves the overall balance of the objective lens and allows the operator to easily observe the status of the digital device. From the perspective of actual production and use, this structure superficially simplifies the overall structure of the surgical microscope, but completely changes the coaxial characteristics of the optical path of the conventional microscope body and has great specificity.On the one hand, it significantly increases the complexity of the optical and mechanical structure of the microscope body and the difficulty of optical and mechanical assembly and adjustment, and increases production and manufacturing costs. On the other hand, it also severely limits the scalability of the microscope and makes modular connection impossible.

[0005] At the same time, the specific settings and parameters of the imaging lens group in the optical path of the digital device have not been disclosed. This is because the adapter not only performs a mechanical connection function, but also plays a crucial role in determining the optical imaging quality. The specific adjustment method of its imaging lens group has a crucial influence on the compensation and correction effect of optical aberrations such as spherical aberration, coma aberration, chromatic aberration, field curvature, and distortion. In addition, optical magnification, aperture, entrance and exit pupil adjustment, and peripheral light vignetting, etc., must be comprehensively considered for different types of digital devices. Only through reasonable adjustment of the imaging lens group can the digital device finally achieve better image quality.

[0006] Therefore, in combination with the existing technical problems mentioned above, it is necessary to provide a new technical solution. Description of the invention

[0007] An object of the present invention is to provide an optical adapter device.

[0008] To achieve the above-mentioned objective, the technical solution of the present invention is: An optical adapter device for connecting surgical microscopes and digital camera equipment, comprising a main body shell and an optical lens assembly arranged within the main body shell, one end of the main body shell forming a first connection end for connection to the beam splitter of the surgical microscope, and the other end of the main body shell forming a second connection end for connection to the digital camera equipment. The main body shell comprises a first shell segment, a second shell segment, and a third shell segment, one end of the first shell segment forming the first connection end, and the first shell segment extending at least partially in the direction of the first axis. One end of the second shell segment is connected to the other end of the first shell segment, and the second shell segment extends at least in the direction of the second axis.one end of the third shell segment is connected to the other end of the second shell segment, the other end of the third shell segment forms the second connection end, and the third shell segment extends at least in the direction of the third axis, wherein the first axis and the third axis each intersect with the second axis;

[0009] Preferably, the first shell segment and the second shell segment can be rotated relative to each other, wherein the first axis is the axis of rotation, and / or The second shell segment and the third shell segment can be rotated relative to each other, with the second axis being the rotation axis. This allows the optical adapter device to be rotated not only horizontally but also selectively vertically, with the 360° rotation enabling observation at any angle.

[0010] In the technical solution described above, the first and third axes are preferably perpendicular to the second axis.

[0011] Preferably, in the above technical solution, in at least one state of the main body shell, the first shell segment and the third shell segment are located on the same side of the second shell segment and have a C-shape, i.e., it is possible to observe both the eyepiece and the digital camera equipment simultaneously. Preferably, the optical lens arrangement in the above-mentioned technical solution comprises the following: a lens group located on at least one of the first axis, the second axis and the third axis; and a reflective mirror group, the reflective mirror group comprising a first reflective mirror and a second reflective mirror, the first reflective mirror being located at the intersection of the first axis and the second axis and the second reflective mirror being located at the intersection of the second axis and the third axis.

[0012] More preferably, the lens group comprises a first lens group located on the first axis, a second lens group located on the second axis, and a third lens group located on the third axis.

[0013] In one embodiment of the present application, some parameters and choices of the first lens group, the second lens group and the third lens group are as follows: the focal length fG1 of the first lens group is: 150 mm< fG1<300 mm, the focal length fG2 of the second lens group satisfies 0.5< fG2 / fG1<2, the focal length fG3 of the third lens group satisfies 10< fG1 / fG3<30.

[0014] The first lens group is a double cemented lens group with positive optical power, and |R1|φ12<20, where R1 is the radius of curvature of the cemented surface of the first lens group and φ1 is the effective aperture of the cemented surface; the second lens group is a double cemented lens group with positive optical power, and |R2|φ22<15, where R2 is the radius of curvature of the cemented surface of the first lens group, and φ2 is the effective aperture of the cemented surface; the third lens group comprises a double cemented lens group with positive optical power and a single lens, and |R3|φ32<10, where R3 is the radius of curvature of the cemented surface of the doubly cemented lens group in the third lens group, and φ3 is the effective aperture of the cemented surface.

[0015] Further preferably, the first lens group is arranged in the first shell segment; the first reflecting mirror and the second lens group are arranged in the second shell segment; the second reflecting mirror and the third lens group are arranged in the third shell segment.

[0016] In one embodiment of the present application, some parameters and choices of the first lens group, the second lens group and the third lens group are as follows: the focal length fG1 of the first lens group is: -300 mm< fG1<-150 mm, the focal length fG2 of the second lens group satisfies -2< fG2 / fG1<-0.2, the focal length fG3 of the third lens group satisfies 2< fG1 / fG3<20.

[0017] The first lens group is a double cemented lens group with negative refractive power, and |R1|φ12<8, where R1 is the radius of curvature of the cemented surface of the first lens group, and φ1 is the effective aperture of the cemented surface; the second lens group is a double cemented lens group with positive optical power, and where R2 is the radius of curvature of the cemented surface of the first lens group, and φ2 is the effective aperture of the cemented surface; the third lens group is a double cemented lens group with negative refractive power, and |R3|φ32<11, where R3 is the radius of curvature of the cemented surface of the doubly cemented lens group in the third lens group, and φ3 is the effective aperture of the cemented surface.

[0018] Further preferably, the first lens group is arranged in the first shell segment; the second lens group, the first reflective mirror group, and the third lens group are arranged in the second shell segment; the second reflective mirror group is arranged in the third shell segment.

[0019] In the above technical solution, the optical lens group preferably includes an image-rotating lens group. The image-rotating lens group is located on the second axis and can rotate with the second axis as the rotation axis. The direction of the optical image formed on the photosensitive unit of the digital camera equipment is adjusted by the image-rotating lens group to meet different observation requirements.

[0020] The image rotating lens group can be selected from Dove prism, Schmidt-Pechan prism, right angle prism, etc.

[0021] Further preferably, the second shell segment is provided with a rotating part for rotating the image-rotating lens group, and the image-rotating lens group is connected to the rotating part. The rotation of the image-rotating lens group is facilitated by operating the rotating part, and the rotating part may be a rotary joint on the main body shell or the like.

[0022] Preferably, in the above technical solution, the main body shell consists of the first shell segment, the second shell segment and the third shell segment, so that the optical adapter device can meet the design requirements and at the same time be constructed as simply as possible.

[0023] A further object of the present invention is to provide a surgical microscope, in particular a surgical microscope with an optical adapter device.

[0024] To achieve the above-mentioned objective, the technical solution of the present invention is: A surgical microscope comprising a microscope main body and an optical adapter device, wherein the microscope main body comprises a microscope body, a beam splitter, and an eyepiece, the beam splitter being connected to the microscope body, and the eyepiece and the optical adapter device being respectively connected to the beam splitter, the optical adapter device being the above-mentioned optical adapter device.

[0025] Preferably, in the above-mentioned technical solution, the surgical microscope further comprises digital camera equipment, and a mobile phone, a camera and a tablet are selected as the digital camera equipment.

[0026] Further preferably, in at least one state of the surgical microscope, the eyepiece and the digital camera equipment point to the same side of the microscope body.

[0027] Preferably, in the above technical solution, the optical adapter device is detachably connected to the beam splitter, and the optical adapter device and the digital camera equipment can be selectively connected.

[0028] In the above-mentioned technical solution, the beam splitter preferably comprises a beam splitter shell and a beam splitter group arranged within the beam splitter shell, wherein the beam splitter shell has a lens body connection end, an eyepiece connection end and an adapter connection end, wherein the eyepiece connection end faces the front of the microscope body and the adapter connection end faces the rear of the microscope body, wherein the microscope body is connected to the lens body connection end, the eyepiece is connected to the eyepiece connection end and the optical adapter device is connected to the adapter connection end.

[0029] More preferably, the beam splitter group comprises a combination of a pentaprism and a Schmidt prism, or a combination of a cubic prism and a pentaprism, or a combination of a cubic prism, a pentaprism, and a rhombic prism, or a combination of a cubic prism, a pentaprism, and a right-angle prism, or a combination of a cubic prism, a right-angle roof prism, and a right-angle prism.

[0030] Due to the application of the above-mentioned technical solutions, the present invention has the following advantages over the prior art: 1. The optical adapter device of the present invention can be adapted to beam splitters of different structures and is suitable for a wider range of microscope bodies; 2. The optical adapter device of the present invention can be applied to various digital devices, making the observation and recording of images clearer and more flexible in operation, thereby improving the diagnostic efficiency; 3. The optical adapter device of the present invention is manufactured and assembled in a modular manner, has a simple structure, good expandability and low cost. Brief description of the drawings Fig. 1 and Fig. 2 are schematic diagrams of a surgical microscope connected to a prior art optical adapter device; Fig. 3 is a schematic cross-sectional view of the surgical microscope in the present embodiment; Fig. 4 is a schematic diagram of the relative rotation of the first shell and the second shell in the present embodiment; Fig. 5 is a schematic diagram of the relative rotation of the second shell and the third shell in the present embodiment; Fig. 6 to 8 are schematic diagrams of the optical image direction of the rotating image rotating lens group on the photosensitive unit of the digital camera equipment in the present embodiment; Fig. 9 is a schematic three-dimensional view of Embodiment 1 of the surgical microscope; Fig. 10 is a schematic cross-sectional view of Embodiment 1 of the surgical microscope; Fig. 11 is an optical principle diagram of Embodiment 1 of the surgical microscope; Fig. 12 is a three-dimensional schematic diagram of Embodiment 2 of the surgical microscope; Fig. 13 is a schematic cross-sectional view of Embodiment 2 of the surgical microscope; Fig. 14 is an optical principle diagram of Embodiment 2 of the surgical microscope; Fig. 15 to 19 are schematic diagrams of the beam splitter group in the present embodiment; Fig. 20 is a schematic diagram of the radius and thickness of the optical structure parameters of Embodiment 1 and Embodiment 2.

[0031] In the figures: 1. Microscope main body: 10. Microscope body; 110. Beamsplitter bowl; 110a. Lens body connection end; 110b. Eyepiece connection end; 110c. Adapter connection end; 111a. Pentaprism; 111b. Schmidt prism; 111c. Cubic prism; 111d. Pentaprism; 111e. Rhombic prism; 111f. Right-angle prism; 111g. Right-angle roof prism; 12. Eyepieces; 2. Optical adapter device; 20. Main body shell; 20a. First connection end; 20b, Second connection end; 200. First shell segment; 201. Second shell segment; 202. Third shell segment; 206. Rotating part; 210. First lens group; 211. Second lens group; 212. Third lens group; 213. First reflecting mirror group; 214. Second reflecting mirror group; 215. Image rotating lens group: 3. Digital camera equipment; 30. Mobile phone; 31. Camera; a. first axis; b. second axis; c. third axis; 1'. Microscope body; 11'. Beam splitter; 2'. Optical adapter device; 3'. Digital camera equipment. Description of the specific embodiments

[0032] In the following, the technical solution of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the description of the embodiments represents only a part of the embodiments of the present invention and not all of them. Based on the embodiments of the present invention, all other embodiments that general technical personnel in this field can obtain without creative effort fall within the scope of the present invention.

[0033] When describing the embodiment of the present invention, it is necessary to point out that an azimuth or positional relationship referring to terms such as "central," "top," "bottom," "left," "right," "vertical," "horizontal," "inside," "outside," and the like, has the azimuth or positional relationship based on the drawing. They are intended to facilitate and simplify the description of the present invention, rather than indicating or implying that the stated device or component must have a particular orientation, be constructed, and operate in a particular orientation. Furthermore, the terms "first," "second," and "third" are used only for discriminatory purposes and should not be understood to indicate a relative meaning.

[0034] A surgical microscope, as in the Fig. 3, Fig. 10 and Fig.13, comprises a microscope main body 1, an optical adapter device 2 and a digital camera equipment 3. Among them, the optical adapter device 2 and the digital camera equipment 3 can be used as accessories of the surgical microscope, detachably connected to the microscope main body 1 and selectively used as needed.

[0035] The microscope main body 1, the optical adapter device 2 and the digital camera equipment 3 are described in detail below. Parts of the microscope main body 1:

[0036] The microscope main body 1 comprises a microscope body 10, a beam splitter, and an eyepiece 12. The beam splitter is connected to the microscope body 10, and the eyepiece 12 and the optical adapter device 2 are each connected to the beam splitter. A conventional binocular tube is selected for the eyepiece 12.

[0037] In the present embodiment, the beam splitter is not integrated into the microscope body 10, which comprises a beam splitter shell 110 and a beam splitter group arranged in the beam splitter shell 110. Where: The beam splitter shell 110 has a lens body connection end 110a, an eyepiece connection end 110b, and an adapter connection end 110c, wherein the lens body connection end 110a is located at the bottom of the beam splitter shell 110, the eyepiece connection end 110b faces the front of the microscope body 10 and is therefore located at the front of the beam splitter shell 110, the adapter connection end 110c faces the rear of the microscope body 10 and is therefore located at the rear of the beam splitter shell 110, the microscope body 10 is connected to the lens body connection end 110a, the eyepiece 12 is connected to the eyepiece connection end 110b, and the optical adapter device 2 is connected to the adapter connection end 110c. A preferred possibility is for the optical adapter device 2 to be detachably connected to the adapter connection end 110c.The eyepiece 12 and the optical adapter device 2 are arranged on the opposite front and back of the microscope body 10, respectively, thereby ensuring a structural balance between the front and back.

[0038] An embodiment of the beam splitter group in this embodiment is shown in the Fig. 11 and Fig.14, the beam splitter group includes a pentaprism 111a and a Schmidt prism 111b, specifically, one pentaprism 111a and two Schmidt prisms 111b. The light of the real image of the object enters the microscope body 10 through the large objective lens group, passes through the optical elements in the microscope body 10, such as the zoom system, and then reaches the pentaprism 111a. Then, using a reflective surface of the pentaprism 111a as a beam splitting surface, part of the light is directly reflected into the eyepiece 12, while the other part of the light is refracted to the Schmidt prism 111b. After being refracted at the Schmidt prism 111b, the light finally enters the optical adapter device 2. In this embodiment, the light beams separated by the beam splitter group are at the same height.

[0039] Another embodiment of the beam splitter group in this embodiment is shown in Fig. 15: the beam splitter group comprises a cubic prism 111c and a pentaprism 111d, wherein the pentaprism 111d is located above the cubic prism 111c in the height direction, the cubic prism 111c consists of two right-angle prisms, and the inclined surfaces of the two right-angle prisms are joined to form a light splitting surface. Of the light beams separated by the cubic prism 111c, a portion of the light beam enters the optical adapter device 2, and the other portion of the light beam enters the eyepiece 12 after being reflected by the pentaprism 111d. Compared with the embodiment in Fig.14, this embodiment uses a commonly used cubic prism 111c for light splitting, so the processing cost is relatively low; at the same time, the excessively long optical path caused by multiple reflections in the Schmidt prism 111b is avoided, which has a positive effect on reducing light vignetting of the imaging light path; at the same time, the cubic prism 111c is located below the pentaprism 111d, thereby fully utilizing the air gap of the original structure to shorten the optical path, which has a positive effect on reducing light vignetting of the observation light path. However, in this embodiment, the light beams separated by the beam splitter group form a height difference, and the height of the light beams entering the eyepiece 12 is higher than the height of the light beams entering the optical adapter device 2.

[0040] Another embodiment of the beam splitter group in this embodiment is shown in the Fig. 16 and Fig. 17, the beam splitter group includes a cubic prism 111c, a pentaprism 111d, and a rhombic prism 111e. The pentaprism 111d is located above the cubic prism 111c in the height direction, the cubic prism 111c consists of two right-angle prisms, and the inclined surfaces of the two right-angle prisms are joined to form a light splitting surface, and the rhombic prism 111e is located between the cubic prism 111c and the optical adapter device 2. Of the light rays separated by the cubic prism 111c, a part of the light beam enters the optical adapter device 2 after passing through the rhombic prism 111e, and the other part of the light beam enters the eyepiece 12 after being reflected by the pentaprism 111d. Compared to the embodiment in Fig. 15, this embodiment enlarges the optical axis of the imaging light path by adding a rhombic prism 111e to avoid mechanical structural interference. At the same time, the air gap of the original structure is utilized, the light path is compact, and processing costs are low; in this embodiment, too, the light beams separated by the beam splitter group are at the same height.

[0041] Another embodiment of the beam splitter group in this embodiment is shown in Fig.18: the beam splitter group comprises a cubic prism 111c, a pentaprism 111d, and two right-angle prisms 111f, wherein the pentaprism 111d is located above the cubic prism 111c in the height direction, the cubic prism 111c consists of two right-angle prisms, the inclined surfaces of the two right-angle prisms are joined to form a light splitting surface, and the two right-angle prisms 111f form a rhombus prism 111e. Of the light beams separated by the cubic prism 111c, a part of the light beam enters the optical adapter device 2 after passing successively through two right-angle prisms 111f, and the other part of the light beam enters the eyepiece 12 after being reflected by the pentaprism 111d. Compared to the embodiment of Fig.16, in this embodiment, the rhombic prism 111e is replaced by the right-angle prism 111f. Depending on structural requirements, the height of the optical axis of the imaging light path can be adjusted by adjusting the distance between the two right-angle prisms 111f. Since the right-angle prism 111f can be adjusted independently, it is also convenient for optical assembly and calibration. In this embodiment, the optical axis is adjustable in the height direction.

[0042] Another embodiment of the beam splitter group in this embodiment is shown in Fig.19: The beam splitter group comprises a cubic prism 111c, a right-angle roof prism 111g, and two right-angle prisms 111f. In the vertical direction, the right-angle roof prism 111g is located above the cubic prism 111c, and the cubic prism 111c consists of two right-angle prisms. The inclined surfaces of the two right-angle prisms are combined to form a light-splitting surface, and the two right-angle prisms 111f form a rhombus prism 111e. Of the light rays separated by the cubic prism 111c, a part of the light beam enters the optical adapter device 2 after successively passing through two right-angle prisms 111f, and the other part of the light enters the eyepiece 12 after being reflected by the right-angle roof prism 111g. Compared with the embodiment in Fig.18, in this embodiment, the internal light path of the right-angle roof prism 111g is shortened by approximately half compared to the pentaprism 111d, which is more conducive to reducing light vignetting in the optical observation path. At the same time, the two internal reflections prevent the mirror phenomenon and rotate the image 180 degrees, eliminating the inverted prism in the light path of the subsequent binocular tube, resulting in lower overall costs. In this embodiment, the optical axis is adjustable in the height direction. Part of the optical adapter device 2:

[0043] The optical adapter device 2 comprises a main body shell 20 and an optical lens group arranged within the main body shell 20, wherein one end of the main body shell 20 forms a first connection end 20a for connection to the beam splitter of the microscope main body 1 and the other end of the main body shell 20 forms a second connection end 20b for connection to the digital camera equipment 3.

[0044] Further: The main body shell 20 has: a first shell segment 200, wherein one end of the first shell segment 200 forms the first terminal end 20a, and the first shell segment 200 extends at least partially in the direction of the first axis a; a second shell segment 201, wherein one end of the second shell segment 201 is connected to the other end of the first shell segment 200, the second shell segment 201 extending at least in the direction of the second axis b; a third shell segment 202, wherein one end of the third shell segment 202 is connected to the other end of the second shell segment 201 and the other end of the third shell segment 202 forms the second connection end 20b, and the third shell segment 202 extends at least in the direction of the third axis c.

[0045] In the present embodiment, the main body shell consists of a first shell segment 200, a second shell segment 201 and a third shell segment 202, i.e. a three-segment structure, so that the optical adapter device can meet the design requirements and at the same time be constructed as simply as possible.

[0046] The first axis a and the third axis c each intersect with the second axis b. In the present embodiment: the first axis a and the third axis b are both perpendicular to the second axis c, the first axis a and the third axis b extend in the horizontal direction, and the second axis c extends in the vertical direction. Furthermore, in at least one state of the main body shell 20, the first shell segment 200 and the third shell segment 202 are located on the same side of the second shell segment 201 and have a C-shape, as shown in Fig. 3 shown.

[0047] In the present embodiment, the first shell segment 200 and the second shell segment 201 can rotate relative to the first axis a as the rotation axis, and the second shell segment 201 and the third shell segment 202 can rotate relative to the second axis b as the rotation axis, so that the optical adapter device can be rotated not only in the horizontal direction but also in the vertical direction, as shown in the Fig. 4 and Fig. 5. To facilitate the implementation of the rotation mode between the shells, the rotation positions of the first shell segment 200 and the second shell segment 201 are shown in Fig. 3 at the point C, and the rotational positions of the second shell segment 201 and the third shell segment 202 are shown in Fig. 3 shown at point D.

[0048] Furthermore, in at least one state of the surgical microscope, the eyepiece 12 and the digital camera equipment 3 point to the same side of the microscope body 10, so that when observing the eyepiece 12, the image on the digital camera equipment 3 can also be observed.

[0049] In this way, the digital camera equipment 3 can rotate horizontally and vertically through the optical adapter device (without interfering with the microscope body) and observe intraoperative images 360°. The direction of the image in the digital camera equipment 3 is adjusted by the rotating part 206, and the direction of the image can also be adjusted 360°.

[0050] The optical lens group includes a lens group, a reflecting mirror group, and an image rotating lens group 215. In particular: The lens group is located on at least one of the axes first axis a, second axis b and third axis c.

[0051] The reflective mirror group includes a first reflective mirror 213 and a second reflective mirror 214. The first reflective mirror 213 is located at the intersection of the first axis a and the second axis b, and the second reflective mirror 214 is located at the intersection of the second axis b and the third axis c; the reflective mirror groups shown in the figure all use right-angle prisms.

[0052] The image rotation lens group 215 is located on the second axis b and can rotate about the second axis b as the rotation axis. The direction of the optical image formed on the light-sensitive unit of the digital camera equipment 3 is adjusted by the image rotation lens group 215 to meet different observation requirements, as shown in the Fig.6 to 8. The image rotating lens group 215 can be selected from a Dove prism, a Schmidt-Pechan prism, etc., and the image rotating lens group 215 shown in the figure is a Schmidt-Pechan prism.

[0053] The present embodiment provides a configuration for rotating the image rotating lens group 215: the main body shell 20 is provided with a rotating part 206 for rotating the image rotating lens group 215, and the image rotating lens group 215 is connected to the rotating part 206. The rotating operation of the image rotating lens group 215 can be realized by operating the rotating part 206, and the rotating part 206 can be a rotary joint on the main body shell 20 or the like.

[0054] In addition, the optical lens group can also add one or more variable apertures, color filters and polarizers as desired. Part of the digital camera equipment 3:

[0055] A mobile phone 30, a camera 31, and a tablet are selected as the digital camera device 3. The digital camera device 3 can be connected to the second terminal end 20b of the main body shell 20 by tightening with a locking ring or magnetic attraction.

[0056] Depending on the digital camera device 3, the optical lens group of the optical adapter device is implemented in different ways. Two methods for selecting the mobile phone 30 and the camera 31 for the digital camera device 3 are specifically described below.

[0057] As in the Fig. 9 to 11, a mobile phone 30 is selected as the digital camera device 3, then: The lens groups are a first lens group 210 on the first axis a, a second lens group 211 on the second axis b and a third lens group 212 on the third axis c.

[0058] The arrangement of the optical lens group is as follows: The first lens group 210 is arranged in the first shell segment 200; the first reflecting mirror 213 and the second lens group 211 are arranged in the second shell segment 201; the second reflecting mirror 214 and the third lens group 212 are arranged in the third shell segment 202.

[0059] The first lens group 210 is a double-cemented lens group with positive optical power, consisting of two lenses L1 and L2 from the object side (surface numbers 1-3); the second lens group 211 is a double-cemented lens group with positive optical power, consisting of two lenses L3 and L4 from the object side (surface numbers 6-8); the third lens group 212 comprises a double-cemented lens group with positive optical power and a single lens, including three lenses L5, L6 and L7 from the object side (surface numbers 13-17).

[0060] Some parameters and selection options of the first lens group 210, the second lens group 211 and the third lens group 221 are as follows: The focal length fG1 of the first lens group satisfies 150 mm < fG1 < 300 mm, The focal length fG2 of the second lens group satisfies 0.5< fG2 / fG1<2, The focal length fG3 of the third lens group meets 10 <fG1 / fG3<30, |R1|φ12<20, where R1 is the radius of curvature of the cemented surface of the first lens group, φ1 is the effective aperture of the cemented surface, |R2|φ22<15, where R2 is the radius of curvature of the cemented surface of the second lens group, φ2 is the effective aperture of the cemented surface, |R3|φ32<10, where R3 is the radius of curvature of the cemented surface of the doubly cemented lens group in the third lens group and φ3 is the effective aperture of the cemented surface. Table 1 Examples of specific optical structural parameters: lens group Area number Radius (mm) Thickness (mm) Nd Vd First lens group 1 150 2 1,4338 94,996 2 -147,57 1.5 1,8467 23,78 3 -258,8 30 First reflecting mirror 4 Infinite 17 1,5168 64,167 5 Infinite 13 Second lens group 6 Infinite 2 1,4338 94,996 7 -74,05 1,5 1,8467 23,78 8 -85 14 Image rotating lens group 9 Infinite - 10 Infinite 24 Second reflecting mirror 11 Infinite 17 1,5168 64,167 12 Infinite 14 Third lens group 13 56,89 6 1,4338 94,996 14 -15,642 0,5 15 12,489 5,5 1,4338 94,996 16 -13,656 1,5 1,8467 23,78 17 -25,52 -

[0061] The first reflecting mirror 213 in the reflecting mirror group is located at the intersection of the first axis a and the second axis b and the second reflecting mirror 214 is located at the intersection of the second axis b and the third axis c.

[0062] The image rotation lens group 215 is arranged on the second axis b and can rotate about the second axis b. The second lens group 211 and the image rotation lens group 215 are arranged sequentially along the light direction on the second axis b.

[0063] As in the Fig. 12 to 14, digital camera equipment 3 uses camera 31, then: The lens groups are a first lens group 210 and a second lens group 211 arranged along the first axis a, and a third lens group 212 arranged on the second axis b. The first lens group 210 and the second lens group 211 are arranged sequentially along the light direction.

[0064] The arrangement of the optical lens group is as follows: The first lens group 210 is arranged in the first shell segment 200; the second lens group 211, the first reflecting mirror 213, and the third lens group 212 are arranged in the second shell segment 201; the second reflecting mirror 214 is arranged within the third shell segment 202.

[0065] The first lens group 210 is a double-cemented lens group with negative optical refractive power, consisting of two lenses L1 and L2 starting from the object side (surface numbers 1-3); the second lens group 211 is a double-cemented lens group with positive optical refractive power, consisting of two lenses L3 and L4 starting from the object side (surface numbers 4-6); the third lens group is a double-cemented lens group with negative optical refractive power, consisting of two lenses L5 and L6 starting from the object side (surface numbers 14-16).

[0066] Some parameters and selection options of the first lens group 210, the second lens group 211 and the third lens group 221 are as follows: The focal length of the first lens group fG1 satisfies: -300 mm< fG1<-150 mm, the focal length of the second lens group fG2 satisfies -2< fG2 / fG1<-0.2, the focal length of the third lens group fG3 satisfies 2< fG1 / fG3<20, |R1|φ12<8, where R1 is the radius of curvature of the cemented surface of the first lens group, φ1 is the effective aperture of the cemented surface, |R2|φ22<15, where R2 is the radius of curvature of the cemented surface of the second lens group, φ2 is the effective aperture of the cemented surface, |R3|φ32<11, where R3 is the radius of curvature of the cemented surface of the doubly cemented lens group in the third lens group and φ3 is the effective aperture of the cemented surface. Table 2 Examples of specific optical structural parameters: lens group Area number Radius (mm) Thickness (mm) Nd Vd First lens group 1 -166 2 1,516 64,2125 2 68 1,5 1,6486 55,4857 3 -258,8 30 Second lens group 4 100 4 1,6274 53,9285 5 -60 2 1,6131 60,5244 6 -170 15 First reflecting mirror 7 Infinite 17 1,5168 64,167 8 Infinite 13 Image rotating lens group 12 Infinite - 13 Infinite 24 Third lens group 14 -88 2 1,6274 53,9285 15 69 3 1,6131 60,5244 16 -110 25 Second reflecting mirror 17 Infinite 17 1,5168 64,167 18 Infinite -

[0067] The first reflecting mirror 213 in the reflecting mirror group is located at the intersection of the first axis a and the second axis b, and the second reflecting mirror 214 is located at the intersection of the second axis b and the third axis c; The image rotation lens group 215 is arranged on the second axis b and can rotate along the second axis b. The image rotation lens group 215 and the second lens group 211 are arranged sequentially on the second axis b along the light direction.

[0068] As in Fig. 20 shown: in Table 1 and Table 2: Radius r is the radius of curvature of the lens surface, the thickness d is the average thickness of the lens, Nd is the refractive index of d-light (wavelength: 589.3 nm) in optical glass,

[0069] Explanation of Vd: Since the same transparent medium has different refractive indices for light of different wavelengths, and white light is composed of different colors of light of different wavelengths, the special phenomenon of dispersion occurs when transparent materials refract white light. The Abbe number is an index that expresses the dispersiveness of transparent media. The commonly used reference base is central dispersion, which represents the difference in the refractive index of cyan light and red light.

[0070] Abbe number Vd=(nd-1) / (nF-nC), nd, nF, and nC are the refractive indices of D-light, F-light, and C-light, respectively. D-light - yellow light, 589.3 nm, D-line in the sodium spectrum, F-light - blue-green light, 486.1 nm, F-line in the hydrogen spectrum, C-light - red light, 656.3 nm, C-line in the hydrogen spectrum.

[0071] The above embodiments are merely illustrative of the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement it appropriately, and they do not limit the scope of the present invention. Any equivalent changes or modifications made based on the spirit of the present invention should be included within the scope of the present invention. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] CN 211123465U

[0004]

Claims

[1] An optical adapter device for connecting surgical microscopes and digital camera equipment, comprising a main body shell and an optical lens assembly arranged within the main body shell, wherein one end of the main body shell forms a first connection end for connection to the beam splitter of the surgical microscope and the other end of the main body shell forms a second connection end for connection to the digital camera equipment, characterized bythat the main body shell comprises a first shell segment, a second shell segment and a third shell segment, wherein one end of the first shell segment forms the first connection end and the first shell segment extends at least partially in the direction of the first axis; one end of the second shell segment is connected to the other end of the first shell segment and the second shell segment extends at least in the direction of the second axis; one end of the third shell segment is connected to the other end of the second shell segment, the other end of the third shell segment forms the second connection end and the third shell segment extends at least in the direction of the third axis, wherein the first axis and the third axis each intersect with the second axis. [2] Optical adapter device according to claim 1, characterized bythat the first shell segment and the second shell segment can rotate relative to the first axis a as the axis of rotation. [3] Optical adapter device according to claim 1, characterized by that the second shell segment and the third shell segment can rotate relative to the second axis b as the axis of rotation, [4] Optical adapter device according to claim 1, characterized by that the first axis a and the third axis b are both perpendicular to the second axis c. [5] Optical adapter device according to claim 1, characterized by that the first shell segment and the third shell segment lie on the same side of the second shell segment in at least one state of the main body shell and have a C-shape. [6] Optical adapter device according to claim 1, characterized bythat the optical lens arrangement comprises: a lens group located on at least one of the first axis, the second axis, and the third axis; and a reflective mirror group, the reflective mirror group comprising a first reflective mirror and a second reflective mirror, the first reflective mirror being located at the intersection of the first axis and the second axis, and the second reflective mirror being located at the intersection of the second axis and the third axis. [7] Optical adapter device according to claim 6, characterized by that the lens group comprises a first lens group located on the first axis, a second lens group located on the second axis, and a third lens group located on the third axis. [8] Optical adapter device according to claim 7, characterized by , that: the focal length f G1the first lens group 150 mm< f G1 <300 mm fulfilled, the focal length f G2 the second lens group 0.5< f G2 / f G1 <2 fulfilled, the focal length f G3 the third lens group 10< f G1 / f G3 <30 fulfilled. [9] Optical adapter device according to claim 7, characterized by , that: the first lens group is a double cemented lens group with positive optical power, and |R1|φ12<20, where R1 is the radius of curvature of the cemented surface of the first lens group and φ1 is the effective aperture of the cemented surface; the second lens group is a double cemented lens group with positive optical power, and |R2|φ22<15, where R2 is the radius of curvature of the cemented surface of the first lens group, and φ2 is the effective aperture of the cemented surface; the third lens group comprises a double-cemented lens group with positive optical power and a single lens, and |R3|φ32<10, where R3 is the radius of curvature of the cemented surface of the doubly cemented lens group in the third lens group, and φ3 is the effective aperture of the cemented surface. [10] Optical adapter device according to claim 7, characterized by that the first lens group is arranged in the first shell segment; the first reflecting mirror and the second lens group are arranged in the second shell segment; the second reflecting mirror and the third lens group are arranged in the third shell segment. [11] Optical adapter device according to claim 6, characterized bythat the lens group comprises a first lens group and a second lens group arranged on the first axis, and a third lens group arranged on the second axis b, wherein the first lens group and the second lens group are arranged successively along the light direction. [12] Optical adapter device according to claim 11, characterized by , that: the focal length f G1 the first lens group -300 mm< f G1 <-150 mm fulfilled, the focal length f G2 the second lens group -2< f G2 / f G1 <-0.2 fulfilled, the focal length f G3 the third lens group 2< f G1 / f G3 <20 fulfilled. [13] Optical adapter device according to claim 11, characterized by , that: the first lens group is a double cemented lens group with negative refractive power, and |R1|φ12<8, where R1 is the radius of curvature of the cemented surface of the first lens group, and φ1 is the effective aperture of the cemented surface; the second lens group is a double cemented lens group with positive optical power, and |R2|φ22<15, where R2 is the radius of curvature of the cemented surface of the first lens group, and φ2 is the effective aperture of the cemented surface; the third lens group is a double cemented lens group with negative refractive power, and |R3|φ32<11, where R3 is the radius of curvature of the cemented surface of the doubly cemented lens group in the third lens group, and φ3 is the effective aperture of the cemented surface. [14] Optical adapter device according to claim 11, characterized bythat the first lens group is arranged in the first shell segment; the second lens group, the first reflecting mirror group and the third lens group are arranged in the second shell segment; the second reflecting mirror group is arranged in the third shell segment. [15] Optical adapter device according to claim 1, characterized by that the optical lens group comprises an image rotation lens group which is designed to adjust the direction of the optical image formed on the light-sensitive unit of the digital camera equipment, wherein the image rotation lens group is located on the second axis and can rotate with the second axis as the axis of rotation. [16] Optical adapter device according to claim 15, characterized by that the second shell segment is provided with a rotating part for rotating the image rotating lens group, and the image rotating lens group is connected to the rotating part. [17] Optical adapter device according to claim 1, characterized by that the main body shell consists of the first shell segment, the second shell segment and the third shell segment. [18] An optical adapter device for connecting surgical microscopes and digital camera equipment, characterized by that it comprises a main body shell and an optical lens assembly arranged within the main body shell, wherein one end of the main body shell forms a first connection end for connection to the beam splitter of the surgical microscope and the other end of the main body shell forms a second connection end for connection to the digital camera equipment, characterized bythat the main body shell comprises a first shell segment, a second shell segment, and a third shell segment, wherein one end of the first shell segment forms the first connection end and the first shell segment extends at least partially in the direction of the first axis; one end of the second shell segment is connected to the other end of the first shell segment and the second shell segment extends at least in the direction of the second axis;one end of the third shell segment is connected to the other end of the second shell segment, the other end of the third shell segment forms the second connection end, and the third shell segment extends at least in the direction of the third axis, wherein the first axis and the third axis are each perpendicular to the second axis, the first shell segment and the second shell segment can rotate relative to the first axis a as the axis of rotation, the first shell segment and the third shell segment are on the same side of the second shell segment in at least one state of the main body shell and have a C-shape; wherein the optical lens group comprises a lens group, a reflecting mirror group, and an image-rotating lens group, wherein the lens group comprises a first lens group located on the first axis, a second lens group located on the second axis, and a third lens group located on the third axis; the first lens group is arranged in the first shell segment; the first reflecting mirror and the second lens group are arranged in the second shell segment; the second reflecting mirror and the third lens group are arranged in the third shell segment, where the focal length f G1 the first lens group 150mm< f G1 <300mm, the first lens group is a double-cemented lens group with positive optical power, and |R1|φ12<20, where R1 is the radius of curvature of the cemented surface of the first lens group and φ1 is the effective aperture of the cemented surface; where the focal length f G2 the second lens group 0.5< f G2 / f G1 <2, the second lens group is a double cemented lens group with positive optical power, and |R2|φ22<15, where R2 is the radius of curvature of the cemented surface of the first lens group, and φ2 is the effective aperture of the cemented surface; where the focal length f G3 the third lens group fulfills 10< f G1 / f G3 <30, the third lens group comprises a double cemented lens group with positive optical power and a single lens, and |R3|φ32<10, where R3 is the radius of curvature of the cemented surface of the doubly cemented lens group in the third lens group, and φ3 is the effective aperture of the cemented surface; a reflective mirror group, the reflective mirror group comprising a first reflective mirror and a second reflective mirror, the first reflective mirror being located at the intersection of the first axis and the second axis and the second reflective mirror being located at the intersection of the second axis and the third axis; the image rotating lens group is designed to adjust the direction of the optical image formed on the light-sensitive unit of the digital camera equipment, wherein the image rotating lens group is located on the second axis and can rotate with the second axis as the axis of rotation. [19] An optical adapter device for connecting surgical microscopes and digital camera equipment, characterized by that it comprises a main body shell and an optical lens assembly arranged within the main body shell, wherein one end of the main body shell forms a first connection end for connection to the beam splitter of the surgical microscope and the other end of the main body shell forms a second connection end for connection to the digital camera equipment, characterized bythat the main body shell comprises a first shell segment, a second shell segment, and a third shell segment, wherein one end of the first shell segment forms the first connection end and the first shell segment extends at least partially in the direction of the first axis; one end of the second shell segment is connected to the other end of the first shell segment and the second shell segment extends at least in the direction of the second axis;one end of the third shell segment is connected to the other end of the second shell segment, the other end of the third shell segment forms the second connection end, and the third shell segment extends at least in the direction of the third axis, wherein the first axis and the third axis are each perpendicular to the second axis, the first shell segment and the second shell segment can rotate relative to the first axis a as the axis of rotation, the first shell segment and the third shell segment are on the same side of the second shell segment in at least one state of the main body shell and have a C-shape; wherein the optical lens group comprises a lens group, a reflecting mirror group and an image rotating lens group, wherein the lens group comprises a first lens group and a second lens group arranged on the first axis, and a third lens group arranged on the second axis b, wherein the first lens group and the second lens group are arranged successively along the light direction; the first lens group is arranged in the first shell segment; the second lens group, the first reflective mirror group, and the third lens group are arranged in the second shell segment; the second reflective mirror group is arranged in the third shell segment, where the focal length f G1 the first lens group -300 mm< f G1 <-150 mm, the first lens group is a double-cemented lens group with negative refractive power, and |R1|φ12<8, where R1 is the radius of curvature of the cemented surface of the first lens group, and φ1 is the effective aperture of the cemented surface; where the focal length fG2 the second lens group -2< f G2 / f G1 <-0.2, the second lens group is a double cemented lens group with positive optical power, and |R2|φ22<15, where R2 is the radius of curvature of the cemented surface of the first lens group, and φ2 is the effective aperture of the cemented surface; where the focal length f G3 the third lens group fulfills 2< f G1 / f G3 <20, the third lens group comprises a double cemented lens group and a single lens with positive optical power, and |R3|φ32<11, where R3 is the radius of curvature of the cemented surface of the doubly cemented lens group in the third lens group, and φ3 is the effective aperture of the cemented surface; a reflective mirror group, the reflective mirror group comprising a first reflective mirror and a second reflective mirror, the first reflective mirror being located at the intersection of the first axis and the second axis and the second reflective mirror being located at the intersection of the second axis and the third axis; wherein the image rotating lens group is configured to adjust the direction of the optical image formed on the light-sensitive unit of the digital camera equipment, wherein the image rotating lens group is located on the second axis and is capable of rotating with the second axis as the axis of rotation. [20] A surgical microscope comprising a microscope main body and an optical adapter device, wherein the microscope main body comprises a microscope body, a beam splitter and an eyepiece, wherein the beam splitter is connected to the microscope body and the eyepiece and the optical adapter device are each connected to the beam splitter, characterized by that the optical adapter device is the optical adapter device described in any one of claims 1 to 17. [21] Surgical microscope according to claim 20, characterized by that the surgical microscope also includes digital camera equipment, and a mobile phone, a camera and a tablet are selected as digital camera equipment. [22] Surgical microscope according to claim 20, characterized by that the eyepiece and the digital camera equipment point to the same side of the microscope body in at least one state of the surgical microscope. [23] Surgical microscope according to claim 20, characterized by that the optical adapter device is detachably connected to the beam splitter. [24] Surgical microscope according to claim 20, characterized by in that the beam splitter comprises a beam splitter shell and a beam splitter group arranged within the beam splitter shell, wherein the beam splitter shell has a lens body connection end, an eyepiece connection end and an adapter connection end, wherein the eyepiece connection end points to the front of the microscope body and the adapter connection end points to the rear of the microscope body, wherein the microscope body is connected to the lens body connection end, the eyepiece is connected to the eyepiece connection end and the optical adapter device is connected to the adapter connection end. [25] Surgical microscope according to claim 24, characterized bythat the beam splitter group comprises a combination of a pentaprism and a Schmidt prism or a combination of a cubic prism and a pentaprism or a combination of a cubic prism, a pentaprism and a rhombic prism or a combination of a cubic prism, a pentaprism and a right-angle prism or a combination of a cubic prism, a right-angle roof prism and a right-angle prism.

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