High-definition wide-angle cystoscope imaging system

Abstract

The invention, which relates to the technical field of cystoscopes, discloses a high-definition wide-angle cystoscope imaging system comprising an objective lens assembly, an image rotation assembly and an eyepiece assembly. The outer diameter of the endoscope tube is 2.6 to 2.9 mm; the objective lens assembly comprises an objective lens I, a flat lens, an objective lens II, an objective lens gluing lens I and an objective lens gluing lens II which are sequentially arranged in the direction from the object space to the image space; the image rotation assembly comprises a plurality of groups of glued rod mirror assemblies which are sequentially arranged at intervals in the direction from the object space to the image space; the glued rod lens assembly comprises a glued rod lens I and a glued rod lens II which are sequentially arranged at an interval from the object space to the image space; the first glued rod lens comprises a first relay lens and a second relay lens which are sequentially and adaptively glued into a whole in the direction from the object space to the image space. The second gluing rod lens comprises a third relay lens and a fourth relay lens which are sequentially matched and glued into a whole in the direction from the object space to the image space. The eyepiece assembly comprises an eyepiece I, an eyepiece II and an eyepiece III which are sequentially arranged at intervals from the object space to the image space; the outer diameter of the lens body is small, and a large field angle and a high-definition imaging function can be realized.

Description

Technical Field

[0001] This invention relates to the field of cystoscopy technology, and in particular to a high-definition wide-angle cystoscopy imaging system. Background Technology

[0002] A cystoscope is a minimally invasive medical examination instrument with excellent illumination. Combined with appropriate surgical instruments, it allows for more precise surgery and access to areas inaccessible by traditional methods. It represents a major trend in modern medicine, offering numerous advantages such as minimal trauma, less patient discomfort, and faster postoperative recovery. It also significantly shortens postoperative hospital stays and reduces the consumption of medical resources. Optical imaging is the most crucial component of a cystoscope. The surgeon's operation relies entirely on the images acquired by the cystoscope. Image clarity directly impacts intraoperative disease assessment, tissue structure identification, and the accuracy and precision of the procedure. Overall, optical imaging is closely related to the safety of the surgery.

[0003] The cystoscope optical system is a key component of the cystoscope. It must ensure high definition, achieve a large field of view and low distortion imaging, and minimize its outer diameter as much as possible. This is extremely challenging in optical design. A large field of view can significantly expand the doctor's field of vision; low distortion can further improve the imaging accuracy of the size and position of internal organs and tissues; the smaller the outer diameter of the endoscope, the less trauma to the doctor and the less damage to the patient.

[0004] Therefore, how to provide a high-definition wide-angle cystoscopy imaging system with a small outer diameter of the endoscope and the ability to achieve a large field of view and high-definition imaging is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention proposes a high-definition wide-angle cystoscopy imaging system, which aims to solve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This invention provides a high-definition wide-angle cystoscope imaging system, comprising an objective lens assembly and an image-rotating assembly sequentially installed along the length of the cystoscope tube, and an eyepiece assembly connected to the end of the cystoscope tube; the outer diameter of the cystoscope tube is 2.6-2.9 mm; The objective lens assembly includes, in sequence from the object side to the image side, an objective lens one, a planar objective lens two, an objective lens cementing lens one, and an objective lens cementing lens two; the objective lens one has a planar surface near the object side and a concave surface near the image side; the planar objective lens has planar surfaces both near and away from the object side; the objective lens two has a planar surface near the object side and a convex surface near the image side; the objective lens two and the planar objective lens are spaced apart along the length of the lens tube; the objective lens cementing lens one includes... Objective lens three and objective lens four are arranged sequentially from the object side to the image side; the mirror surface of objective lens three is convex both near and away from the object side; the mirror surface of objective lens four is concave near the object side and convex near the image side; the cemented objective lens two includes objective lens five and objective lens six arranged sequentially from the object side to the image side; the mirror surface of objective lens five is concave near the object side and flat near the image side; the mirror surface of objective lens six is ​​flat near the object side and convex near the image side. The image-spinning assembly includes multiple sets of cemented rod mirror assemblies arranged at intervals from the object side to the image side; each cemented rod mirror assembly includes cemented rod mirror one and cemented rod mirror two arranged at intervals from the object side to the image side; cemented rod mirror one includes image-spinning mirror one and image-spinning mirror two that are cemented together in sequence from the object side to the image side; cemented rod mirror two includes image-spinning mirror three and image-spinning mirror four that are cemented together in sequence from the object side to the image side; the mirror surfaces of image-spinning mirror one and image-spinning mirror four are convex surfaces both near and far from the object side; the mirror surface of image-spinning mirror two is concave near the object side and convex near the image side; the mirror surface of image-spinning mirror three is convex near the object side and concave near the image side. The eyepiece assembly includes eyepiece one, eyepiece two, and eyepiece three arranged at intervals from the object side to the image side; the mirror surface of eyepiece one near the object side is concave and the mirror surface near the image side is convex; the mirror surface of eyepiece two near the object side is concave and the mirror surface near the image side is convex; the mirror surface of eyepiece three near and away from the object side is convex.

[0008] This invention presents a high-definition wide-angle cystoscope imaging system that achieves a balance between "narrow diameter" and "high-performance optics." Within a limited space of only 2.6-2.9 mm in diameter, a complete rigid endoscopic optical system with wide-angle and high-definition characteristics is constructed. The endoscope tube can enter the bladder through a narrower natural human cavity (urethra), reducing expansion and damage to the urethral mucosa. It allows for minimal invasiveness while providing clarity and observation range far exceeding traditional narrow-diameter endoscopes, making it particularly suitable for the diagnosis and treatment of bladder diseases requiring precise observation and minimally invasive procedures. The objective lens is designed as a plano-concave lens, effectively expanding the light receiving angle and giving the system a larger field of view. This allows doctors to observe a wider area within the bladder, reducing blind spots. The objective lens also employs a cemented lens assembly to bond glass lenses with different refractive indices and dispersion coefficients together, thereby eliminating chromatic aberration. Multiple sets of cemented rod lens assemblies effectively constrain the light propagation path and reduce loss, enabling relay image transmission within the slender endoscope tube and ensuring image brightness and contrast. In addition, the eyepiece assembly serves to create a high eyepoint, wide field of view, and low distortion observation window. It employs a three-piece separate structure (eyepiece one, eyepiece two, and eyepiece three) to achieve a long exit pupil distance, allowing the doctor's eye to see the complete field of view without needing to be directly in contact with the outermost lens of the eyepiece. The biconvex design of eyepiece three ensures that the light emanating from the eyepiece covers the natural field of vision of the human eye, facilitating the doctor's viewing of a bright image.

[0009] As a further improvement to the above technical solution, the glued rod mirror assembly consists of seven groups.

[0010] As a further improvement to the above technical solution, the objective lens assembly further includes an annular lens mount; the annular lens mount is coaxially inserted into the front end of the lens tube; the first objective lens is installed in the cylindrical cavity of the annular lens mount; the first objective lens and the planar lens are spaced apart along the length of the lens tube.

[0011] As a further improvement to the above technical solution, objective lens four and objective lens five are spaced apart along the length of the lens tube; objective lens three and objective lens four are bonded together with their mirror surfaces close to each other to form objective lens cementing lens one; objective lens five and objective lens six are bonded together with their mirror surfaces close to each other to form objective lens cementing lens two.

[0012] As a further improvement to the above technical solution, the first objective lens is a plano-concave lens made of H-LAF10LA glass material; the mirror distance of the first objective lens near the object side is 0.35mm, and the mirror diameter is 0.6mm; the radius of curvature of the first objective lens near the image side is 0.4mm, the mirror distance is 0.155mm, and the mirror diameter is 0.4mm; the lens radius of the first objective lens is 0.7mm. The flat mirror is a flat lens made of H-LAF10LA glass material. The distance between the mirror surface and the object side of the flat mirror is 2mm, the mirror diameter is 0.29mm, and the lens radius is 0.9mm. The second objective lens is a plano-convex lens made of H-ZLAF50E glass material. The distance between the mirror surface of the second objective lens and the object side is 3.02 mm, and the mirror diameter is 0.8 mm. The radius of curvature of the mirror surface of the second objective lens and the image side is -2.27 mm, the distance between the mirror surface and the image side is 0.3 mm, and the mirror diameter is 0.8 mm. The lens radius of the second objective lens is 0.9 mm. Objective lens three is a lens made of H-ZK14 glass material, with a radius of curvature of 10.9 mm, a mirror distance of 1.4 mm, and a mirror diameter of 0.6 mm on the object side. Objective lens four is a lens made of H-ZF72A glass material, with a radius of curvature of -1.3 mm, a mirror distance of 0.6 mm, and a mirror diameter of 0.5 mm on the object side. Objective lens four and objective lens three are cemented together with their adjacent mirror surfaces. Objective lens four has a radius of curvature of -3.981 mm, a mirror distance of 1 mm, and a mirror diameter of 0.58 mm on the image side. The lens radii of both objective lens three and objective lens four are 0.9 mm. Objective lens five is a lens made of H-ZF52 glass material. The radius of curvature of the mirror surface near the object side of objective lens five is -1.67mm, the mirror distance is 0.6mm, and the mirror diameter is 0.38mm. Objective lens six is ​​a lens made of H-LAF4 glass material. The mirror surfaces of objective lens six and objective lens five are cemented together with each other. The mirror distance of the mirror surface near the object side of objective lens six is ​​1.3mm, and the mirror diameter is 0.6mm. The radius of curvature of the mirror surface near the image side of objective lens six is ​​-2.559mm, the mirror distance is 2.35mm, and the mirror diameter is 0.7mm. The lens radii of both objective lens five and objective lens six are 0.9mm.

[0013] As a further improvement to the above technical solution, the first image rotating mirror has the same structure as the fourth image rotating mirror; the second image rotating mirror has the same structure as the third image rotating mirror.

[0014] As a further improvement to the above technical solution, the spacing between any two adjacent sets of the glued rod mirror assembly is equal.

[0015] As a further improvement to the above technical solution, the first image-rotating mirror is a lens made of H-K9L glass material. The radius of curvature of the mirror surface near the object side of the first image-rotating mirror is 6.906 mm, the mirror distance is 18 mm, and the mirror diameter is 0.7 mm. The radius of curvature of the mirror surface near the image side of the first image-rotating mirror and the mirror surface near the object side of the second image-rotating mirror are both -3.08 mm. The mirror surfaces of the first image-rotating mirror and the second image-rotating mirror are fitted and cemented together to form a cemented rod mirror. The second image-rotating mirror is a lens made of H-QF3 glass material. The mirror distance of the mirror surface near the object side of the second image-rotating mirror is 1.5 mm, and the mirror diameter is 0.6 mm. The radius of curvature of the mirror surface near the image side of the second image-rotating mirror is -7.58 mm, and the mirror diameter is 0.7 mm. The lens radii of the first image-rotating mirror, the second image-rotating mirror, the third image-rotating mirror, and the fourth image-rotating mirror are all 0.9 mm.

[0016] As a further improvement to the above technical solution, the first eyepiece is a lens made of H-ZK9 glass material, with a radius of curvature of -34.2mm, a mirror distance of 2mm, and a mirror diameter of 2.4mm on the object side; the radius of curvature of the mirror surface near the image side of the first eyepiece is -3.22mm, a mirror distance of 2.21mm, and a mirror diameter of 2.4mm. The second eyepiece is a lens made of H-ZF1 glass material, with a radius of curvature of -3.014mm, a mirror distance of 0.84mm, and a mirror diameter of... The first eyepiece has a diameter of 2.4 mm. The second eyepiece has a radius of curvature of -8.913 mm, a mirror distance of 0.96 mm, and a mirror diameter of 2.4 mm on the image side. The third eyepiece is a lens made of H-LAK53 glass material. The third eyepiece has a radius of curvature of 12 mm, a mirror distance of 2 mm, and a mirror diameter of 2.4 mm on the object side. The third eyepiece has a radius of curvature of -34.48 mm and a mirror diameter of 2.4 mm on the image side. The lens radii of the first, second, and third eyepieces are all 2.1 mm.

[0017] As a further improvement to the above technical solution, the outer diameter of the endoscope tube is 2.9 mm.

[0018] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a high-definition wide-angle cystoscopy imaging system, which has the following advantages and beneficial effects.

[0019] 1. The cystoscope imaging system of the present invention consists of an objective lens system composed of a negative lens, a planar lens, a positive lens, a positive cemented lens group, and a negative cemented lens group, arranged sequentially from the object side to the image side; an image rotation system composed of fourteen positive cemented rod lenses, arranged in pairs, for a total of seven pairs; and an eyepiece system composed of two negative lenses and one positive lens, which can achieve achromatic, short focal length, and long distance imaging functions.

[0020] 2. The cystoscope imaging system of the present invention adopts an objective lens architecture with an ultra-small radius of curvature, which has the advantages of compact structure, fewer lenses, environmentally friendly materials, small outer diameter (optical path diameter 1.8mm, lens tube outer diameter 2.9mm), high resolution (angular resolution 3.17C / °, i.e. 3.17 cycles / degree), large field of view (80°), and small distortion (less than 15%). Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 A schematic diagram of the overall structure of a high-definition wide-angle cystoscope imaging system according to the present invention.

[0023] Figure 2 A schematic diagram of the objective lens assembly structure of a high-definition wide-angle cystoscope imaging system according to the present invention.

[0024] Figure 3 A schematic diagram of the image rotation component structure of a high-definition wide-angle cystoscope imaging system according to the present invention.

[0025] Figure 4 A schematic diagram of the eyepiece assembly structure of a high-definition wide-angle cystoscope imaging system of the present invention.

[0026] Figure 5 The optical transfer function diagram of this invention at the designed object distance (12mm object distance).

[0027] Figure 6 The present invention provides a field curvature distortion diagram under the designed object distance (12mm object distance).

[0028] In the diagram: 1. Lens tube; 2. Objective lens assembly; 21. Objective lens one; 22. Plane lens; 23. Objective lens two; 24. Cemented objective lens one; 241. Objective lens three; 242. Objective lens four; 25. Cemented objective lens two; 251. Objective lens five; 252. Objective lens six; 26. Circular lens mount; 201. Spacer ring one; 202. Spacer ring two; 203. Spacer ring three; 204. Spacer ring four; 3. Image rotation assembly; 31. Cemented rod lens assembly; 311. Image rotation mirror one; 312. Image rotation mirror two; 313. Image rotation mirror three; 314. Image rotation mirror four; 301. Spacer ring five; 302. Spacer ring six; 4. Eyepiece assembly; 41. Eyepiece one; 42. Eyepiece two; 43. Eyepiece three; 401. Spacer ring seven; 402. Spacer ring eight. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] According to embodiments of the present invention, such as Figures 1 to 4 As shown, a high-definition wide-angle cystoscope imaging system includes an objective lens assembly 2 and an image-rotating assembly 3 installed sequentially along the length of the endoscope tube 1, and an eyepiece assembly 4 connected to the end of the endoscope tube 1; the outer diameter of the endoscope tube 1 is 2.6-2.9 mm.

[0034] Objective lens assembly 2 includes objective lens 1 21, plane lens 22, objective lens 23, objective lens cementing lens 1 24, and objective lens cementing lens 25 arranged sequentially from the object side to the image side; objective lens 1 21 has a flat surface near the object side and a concave surface near the image side; plane lens 22 has flat surfaces near and away from the object side; objective lens 23 has a flat surface near the object side and a convex surface near the image side; objective lens 23 and plane lens 22 are spaced apart along the length of the lens tube 1; objective lens cementing lens 24 includes objective lens 1 21, plane lens 22, objective lens 23, objective lens cementing lens 24, and objective lens cementing lens 25 arranged sequentially from the object side to the image side. Objective lens 3 241 and objective lens 4 242 are arranged sequentially in the image direction; the mirror surface of objective lens 3 241 is convex both near and away from the object side; the mirror surface of objective lens 4 242 is concave near the object side and convex near the image side; objective lens cementing lens 2 25 includes objective lens 5 251 and objective lens 6 252 arranged sequentially from the object side to the image side; the mirror surface of objective lens 5 251 is concave near the object side and flat near the image side; the mirror surface of objective lens 6 252 is flat near the object side and convex near the image side.

[0035] The image-spinning assembly 3 includes multiple sets of glued rod mirror assemblies 31 arranged at intervals from the object side to the image side; the glued rod mirror assembly 31 includes glued rod mirror one and glued rod mirror two arranged at intervals from the object side to the image side; glued rod mirror one includes image-spinning mirror one 311 and image-spinning mirror two 312 that are glued together in sequence from the object side to the image side; glued rod mirror two includes image-spinning mirror three 313 and image-spinning mirror four 314 that are glued together in sequence from the object side to the image side; the mirror surfaces of image-spinning mirror one 311 and image-spinning mirror four 314 are convex surfaces near and away from the object side; the mirror surface of image-spinning mirror two 312 is concave near the object side and convex near the image side; the mirror surface of image-spinning mirror three 313 is convex near the object side and concave near the image side.

[0036] The eyepiece assembly 4 includes eyepiece 1 41, eyepiece 2 42 and eyepiece 3 43 arranged sequentially from the object side to the image side; the mirror surface of eyepiece 1 41 near the object side is concave and the mirror surface near the image side is convex; the mirror surface of eyepiece 2 42 near the object side is concave and the mirror surface near the image side is convex; the mirror surface of eyepiece 3 43 near and away from the object side is convex.

[0037] This embodiment presents a high-definition wide-angle cystoscope imaging system that achieves a balance between "narrow diameter" and "high-performance optics." Within a limited space of only 2.6-2.9 mm in diameter, a complete rigid endoscopic optical system with wide-angle and high-definition characteristics is constructed. The endoscope tube can enter the bladder through narrower natural cavities (such as the urethra), reducing expansion and damage to the urethral mucosa. It allows for minimal invasiveness while providing clarity and observation range far exceeding traditional narrow-diameter endoscopes, making it particularly suitable for the diagnosis and treatment of bladder diseases requiring precise observation and minimally invasive procedures. Objective lens 21 is designed as a plano-concave lens, effectively expanding the light reception angle and giving the system a larger field of view, allowing doctors to observe a wider area within the bladder and reducing blind spots. The objective lens also employs a cemented lens assembly to bond glass lenses with different refractive indices and dispersion coefficients together, thereby eliminating chromatic aberration. Multiple sets of cemented rod lens assemblies 31 effectively constrain the light propagation path and reduce loss to achieve relay image transmission within the slender endoscope tube, ensuring image brightness and contrast. Furthermore, the eyepiece assembly 4 constructs a high eyepoint, wide field of view, and low distortion observation window. It employs a three-piece separate structure (eyepiece 1 41, eyepiece 2 42, and eyepiece 3 43) to achieve a long exit pupil distance, allowing the doctor's eye to see the complete field of view without needing to be directly in contact with the outermost lens of the eyepiece. The biconvex structure of eyepiece 3 ensures that the light emanating from the eyepiece covers the natural field of vision of the human eye, facilitating the doctor's viewing of a bright image.

[0038] In some embodiments, the glued rod mirror assembly 31 comprises seven groups.

[0039] In some embodiments, the objective lens assembly 2 further includes an annular lens mount 26; the annular lens mount 26 is coaxially inserted into the front end of the lens tube 1; the first objective lens 21 is installed in the cylindrical cavity of the annular lens mount 26; the first objective lens 21 and the planar lens 22 are spaced apart along the length of the lens tube 1.

[0040] In some embodiments, objective lens four 242 and objective lens five 251 are spaced apart along the length of the lens tube 1; objective lens three 241 and objective lens four 242 are bonded together with their mirror surfaces close to each other to form objective lens cementing lens one; objective lens five 251 and objective lens six 252 are bonded together with their mirror surfaces close to each other to form objective lens cementing lens two.

[0041] In some embodiments, objective lens 21 is a plano-concave lens made of H-LAF10LA glass material; the mirror distance of objective lens 21 near the object side is 0.35 mm and the mirror diameter is 0.6 mm; the radius of curvature of objective lens 21 near the image side is 0.4 mm, the mirror distance is 0.155 mm and the mirror diameter is 0.4 mm; the lens radius of objective lens 21 is 0.7 mm.

[0042] The flat lens 22 is a flat lens made of H-LAF10LA glass material. The distance between the mirror surface of the flat lens 22 and the object side is 2mm, the mirror diameter is 0.29mm, and the lens radius is 0.9mm.

[0043] Objective lens 23 is a plano-convex lens made of H-ZLAF50E glass. The distance between the mirror surface of objective lens 23 and the object side is 3.02 mm, and the mirror diameter is 0.8 mm. The radius of curvature of the mirror surface of objective lens 23 and the image side is -2.27 mm, the distance between the mirror surface and the image side is 0.3 mm, and the mirror diameter is 0.8 mm. The lens radius of objective lens 23 is 0.9 mm.

[0044] Objective lens 3, 241, is made of H-ZK14 glass. The radius of curvature of the mirror surface near the object side of objective lens 3, 241 is 10.9 mm, the mirror distance is 1.4 mm, and the mirror diameter is 0.6 mm. Objective lens 4, 242, is made of H-ZF72A glass. The radius of curvature of the mirror surface near the object side of objective lens 4, 242 is -1.3 mm, the mirror distance is 0.6 mm, and the mirror diameter is 0.5 mm. The mirror surfaces of objective lens 4, 242 and objective lens 3, 241 are cemented together. The radius of curvature of the mirror surface near the image side of objective lens 4, 242 is -3.981 mm, the mirror distance is 1 mm, and the mirror diameter is 0.58 mm. The lens radii of both objective lens 3, 241 and objective lens 4, 242 are 0.9 mm.

[0045] Objective lens 5 (251) is made of H-ZF52 glass. The radius of curvature of the mirror surface near the object side of objective lens 5 (251) is -1.67 mm, the mirror distance is 0.6 mm, and the mirror diameter is 0.38 mm. Objective lens 6 (252) is made of H-LAF4 glass. The mirror surfaces of objective lens 6 (252) and objective lens 5 (251) are cemented together. The mirror distance of the mirror surface near the object side of objective lens 6 (252) is 1.3 mm, and the mirror diameter is 0.6 mm. The radius of curvature of the mirror surface near the image side of objective lens 6 (252) is -2.559 mm, the mirror distance is 2.35 mm, and the mirror diameter is 0.7 mm. The lens radii of both objective lens 5 (251) and objective lens 6 (252) are 0.9 mm.

[0046] In some embodiments, image-rotating mirror 311 and image-rotating mirror 314 have the same structure; image-rotating mirror 312 and image-rotating mirror 313 have the same structure.

[0047] In some embodiments, the spacing between any two adjacent sets of glued rod mirror assemblies 31 is equal.

[0048] In some embodiments, image-spinning mirror 311 is a lens made of H-K9L glass material. The radius of curvature of the mirror surface near the object side of image-spinning mirror 311 is 6.906 mm, the mirror distance is 18 mm, and the mirror diameter is 0.7 mm. The radius of curvature of the mirror surface near the image side of image-spinning mirror 311 and the mirror surface near the object side of image-spinning mirror 312 is -3.08 mm. The mirror surfaces of image-spinning mirror 311 and image-spinning mirror 312 that are close to each other are fitted and cemented together. The first mirror is a cemented rod lens; the second mirror 312 is a lens made of H-QF3 glass material. The distance between the mirror surface of the second mirror 312 and the object side is 1.5 mm, and the mirror surface diameter is 0.6 mm. The radius of curvature of the mirror surface of the second mirror 312 and the image side is -7.58 mm, and the mirror surface diameter is 0.7 mm. The radii of the lenses of the first mirror 311, the second mirror 312, the third mirror 313, and the fourth mirror 314 are all 0.9 mm.

[0049] In some embodiments, eyepiece 41 is a lens made of H-ZK9 glass material, with a radius of curvature of -34.2 mm, a mirror distance of 2 mm, and a mirror diameter of 2.4 mm on the object side; the radius of curvature of the mirror surface near the image side of eyepiece 41 is -3.22 mm, the mirror distance is 2.21 mm, and the mirror diameter is 2.4 mm; eyepiece 42 is a lens made of H-ZF1 glass material, with a radius of curvature of -3.014 mm, a mirror distance of 0.84 mm, and a mirror diameter of 2.4 mm on the object side. Eyepiece 2 (42) has a radius of curvature of -8.913mm on the image side, a mirror distance of 0.96mm, and a mirror diameter of 2.4mm. Eyepiece 3 (43) is a lens made of H-LAK53 glass. The radius of curvature of the mirror on the object side of eyepiece 3 (43) is 12mm, the mirror distance is 2mm, and the mirror diameter is 2.4mm. The radius of curvature of the mirror on the image side of eyepiece 3 (43) is -34.48mm, and the mirror diameter is 2.4mm. The lens radii of eyepieces 1 (41), 2 (42), and 3 (43) are all 2.1mm.

[0050] In some embodiments, the outer diameter of the lens tube 1 is 2.9 mm.

[0051] In some embodiments, referring to Table 1, specific parameter data of a high-definition wide-angle cystoscopy imaging system are given; the mirror distance refers to the axial distance between a certain mirror and the adjacent mirror on the rear side (the side closer to the image); the mirror diameter refers to the effective light-transmitting aperture of the mirror; the lens radius refers to the radius of the outer peripheral contour surface of the lens. The mirrors are numbered M1-M78 in sequence from the object side to the image side, representing multiple mirrors sequentially.

[0052] Table 1. Parameters of a High-Definition Wide-Angle Cystoscopy Imaging System

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0054] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A high-definition wide-angle cystoscope imaging system, comprising an objective lens assembly (2) and an image-rotating assembly (3) sequentially mounted in the endoscope tube (1) along its length, and an eyepiece assembly (4) connected to the end of the endoscope tube (1); characterized in that: The outer diameter of the lens tube (1) is 2.6-2.9 mm; The objective lens assembly (2) includes objective lens one (21), plane lens (22), objective lens two (23), objective lens cementing lens one (24), and objective lens cementing lens two (25) arranged sequentially from the object side to the image side; the objective lens one (21) has a flat surface near the object side and a concave surface near the image side; the plane lens (22) has flat surfaces near and away from the object side; the objective lens two (23) has a flat surface near the object side and a convex surface near the image side; the objective lens two (23) and the plane lens (22) are spaced apart along the length of the lens tube (1); the objective lens cementing lens one (24) The objective lens 2 (25) includes objective lens 3 (241) and objective lens 4 (242) arranged sequentially from the object side to the image side; the objective lens 3 (241) has convex surfaces near and away from the object side; the objective lens 4 (242) has a concave surface near the object side and a convex surface near the image side; the objective lens 2 (25) includes objective lens 5 (251) and objective lens 6 (252) arranged sequentially from the object side to the image side; the objective lens 5 (251) has a concave surface near the object side and a flat surface near the image side; the objective lens 6 (252) has a flat surface near the object side and a convex surface near the image side. The image-spinning assembly (3) includes multiple sets of cemented rod mirror assemblies (31) arranged at intervals from the object side to the image side; the cemented rod mirror assembly (31) includes cemented rod mirror one and cemented rod mirror two arranged at intervals from the object side to the image side; the cemented rod mirror one includes image-spinning mirror one (311) and image-spinning mirror two (312) that are adapted and cemented together in sequence from the object side to the image side; the cemented rod mirror two includes image-spinning mirror three (313) and image-spinning mirror four (314) that are adapted and cemented together in sequence from the object side to the image side; the mirror surfaces of image-spinning mirror one (311) and image-spinning mirror four (314) are convex surfaces near and away from the object side; the mirror surface of image-spinning mirror two (312) is concave near the object side and convex near the image side; the mirror surface of image-spinning mirror three (313) is convex near the object side and concave near the image side. The eyepiece assembly (4) includes eyepiece one (41), eyepiece two (42) and eyepiece three (43) arranged sequentially from the object side to the image side; the mirror surface of eyepiece one (41) near the object side is concave and the mirror surface near the image side is convex; the mirror surface of eyepiece two (42) near the object side is concave and the mirror surface near the image side is convex; the mirror surface of eyepiece three (43) near and away from the object side is convex.

2. The high-definition wide-angle cystoscopy imaging system according to claim 1, characterized in that, The glued rod mirror assembly (31) consists of seven sets.

3. The high-definition wide-angle cystoscopy imaging system according to claim 1, characterized in that, The objective lens assembly (2) also includes an annular lens mount (26); the annular lens mount (26) is coaxially inserted into the front end of the lens tube (1); the first objective lens (21) is installed in the cylindrical cavity of the annular lens mount (26); the first objective lens (21) and the planar lens (22) are spaced apart along the length of the lens tube (1).

4. The high-definition wide-angle cystoscopy imaging system according to claim 1, characterized in that, Objective lens four (242) and objective lens five (251) are spaced apart along the length of the lens tube (1); objective lens three (241) and objective lens four (242) are bonded together with their mirror surfaces close to each other to form objective lens cementing lens one; objective lens five (251) and objective lens six (252) are bonded together with their mirror surfaces close to each other to form objective lens cementing lens two.

5. The high-definition wide-angle cystoscopy imaging system according to claim 4, characterized in that, The objective lens (21) is a plano-concave lens made of H-LAF10LA glass material; the distance between the mirror surface of the objective lens (21) and the object side is 0.35 mm, and the mirror diameter is 0.6 mm; the radius of curvature of the mirror surface of the objective lens (21) and the image side is 0.4 mm, the distance between the mirror surface and the image side is 0.155 mm, and the mirror diameter is 0.4 mm; the lens radius of the objective lens (21) is 0.7 mm. The flat mirror (22) is a flat lens made of H-LAF10LA glass material. The mirror distance of the flat mirror (22) to the object side is 2mm, the mirror diameter is 0.29mm, and the lens radius is 0.9mm. The objective lens 2 (23) is a plano-convex lens made of H-ZLAF50E glass material. The distance between the mirror surface of the objective lens 2 (23) and the object side is 3.02 mm, and the mirror diameter is 0.8 mm. The radius of curvature of the mirror surface of the objective lens 2 (23) and the image side is -2.27 mm, the distance between the mirror surface and the image side is 0.3 mm, and the mirror diameter is 0.8 mm. The lens radius of the objective lens 2 (23) is 0.9 mm. Objective lens three (241) is a lens made of H-ZK14 glass material. The radius of curvature of the mirror surface of objective lens three (241) near the object side is 10.9 mm, the mirror distance is 1.4 mm, and the mirror diameter is 0.6 mm. Objective lens four (242) is a lens made of H-ZF72A glass material. The radius of curvature of the mirror surface of objective lens four (242) near the object side is -1.3 mm, the mirror distance is 0.6 mm, and the mirror diameter is 0.5 mm. The mirror surfaces of objective lens four (242) and objective lens three (241) are cemented together. The radius of curvature of the mirror surface of objective lens four (242) near the image side is -3.981 mm, the mirror distance is 1 mm, and the mirror diameter is 0.58 mm. The lens radii of objective lens three (241) and objective lens four (242) are both 0.9 mm. Objective lens 5 (251) is a lens made of H-ZF52 glass material. The radius of curvature of the mirror surface of objective lens 5 (251) near the object side is -1.67mm, the mirror distance is 0.6mm, and the mirror diameter is 0.38mm. Objective lens 6 (252) is a lens made of H-LAF4 glass material. The mirror surfaces of objective lens 6 (252) and objective lens 5 (251) are cemented together. The mirror distance of objective lens 6 (252) near the object side is 1.3mm, and the mirror diameter is 0.6mm. The radius of curvature of objective lens 6 (252) near the image side is -2.559mm, the mirror distance is 2.35mm, and the mirror diameter is 0.7mm. The lens radii of both objective lens 5 (251) and objective lens 6 (252) are 0.9mm.

6. The high-definition wide-angle cystoscopy imaging system according to claim 1, characterized in that, The first image-rotating mirror (311) has the same structure as the fourth image-rotating mirror (314); the second image-rotating mirror (312) has the same structure as the third image-rotating mirror (313).

7. The high-definition wide-angle cystoscopy imaging system according to claim 6, characterized in that, The spacing between any two adjacent sets of the glued rod mirror assembly (31) is equal.

8. The high-definition wide-angle cystoscope imaging system according to claim 7, characterized in that, The first image-rotating mirror (311) is a lens made of H-K9L glass material. The radius of curvature of the mirror surface of the first image-rotating mirror (311) near the object side is 6.906 mm, the distance between the mirror surfaces is 18 mm, and the diameter of the mirror surface is 0.7 mm. The radius of curvature of the mirror surface of the first image-rotating mirror (311) near the image side and the mirror surface of the second image-rotating mirror (312) near the object side are both -3.08 mm. The mirror surfaces of the first image-rotating mirror (311) and the second image-rotating mirror (312) that are close to each other are fitted and cemented together to form a cemented rod mirror.

1. The image-rotating mirror 2 (312) is a lens made of H-QF3 glass material. The distance between the mirror surface of the image-rotating mirror 2 (312) and the object side is 1.5 mm, and the mirror surface diameter is 0.6 mm. The radius of curvature of the mirror surface of the image-rotating mirror 2 (312) and the image side is -7.58 mm, and the mirror surface diameter is 0.7 mm. The lens radii of the image-rotating mirror 1 (311), the image-rotating mirror 2 (312), the image-rotating mirror 3 (313), and the image-rotating mirror 4 (314) are all 0.9 mm.

9. The high-definition wide-angle cystoscopy imaging system according to claim 1, characterized in that, Eyepiece 1 (41) is a lens made of H-ZK9 glass material. The radius of curvature of the mirror surface near the object side of eyepiece 1 (41) is -34.2mm, the mirror distance is 2mm, and the mirror diameter is 2.4mm. The radius of curvature of the mirror surface near the image side of eyepiece 1 (41) is -3.22mm, the mirror distance is 2.21mm, and the mirror diameter is 2.4mm. Eyepiece 2 (42) is a lens made of H-ZF1 glass material. The radius of curvature of the mirror surface near the object side of eyepiece 2 (42) is -3.014mm, the mirror distance is 0.84mm, and the mirror diameter is 2.4mm. The radius of curvature of the mirror surface near the image side of mirror 2 (42) is -8.913mm, the mirror distance is 0.96mm, and the mirror diameter is 2.4mm; the eyepiece 3 (43) is a lens made of H-LAK53 glass material. The radius of curvature of the mirror surface near the object side of eyepiece 3 (43) is 12mm, the mirror distance is 2mm, and the mirror diameter is 2.4mm. The radius of curvature of the mirror surface near the image side of eyepiece 3 (43) is -34.48mm, and the mirror diameter is 2.4mm; the lens radii of eyepiece 1 (41), eyepiece 2 (42), and eyepiece 3 (43) are all 2.1mm.

10. A high-definition wide-angle cystoscopy imaging system according to claim 1, characterized in that, The outer diameter of the lens tube (1) is 2.9 mm.

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