3D endoscope system

Abstract

The present disclosure provides a three-dimensional endoscope system, including a main body component, the main body component includes an outer tube, a first inner tube, a second inner tube, a first lens, a second lens, a bracket, and a main body; an optical path component, the optical path component includes a first optical path component and a second optical path component, the first optical path component and the second optical path component are arranged in parallel along the optical axis direction; the first optical path component and the second optical path component are accommodated inside the main body component; the first optical path component includes a first objective lens component, a first eyepiece component, and a first system tube, the first objective lens component includes a first objective lens optical path system and a first objective lens tube accommodating the first objective lens tube system, the first eyepiece component includes a first eyepiece optical path system and a first eyepiece tube accommodating the first eyepiece optical path system, the first objective lens component and the first eyepiece component are connected front to back and accommodated inside the first system tube, and the second optical path component includes a second objective lens component, a second eyepiece component, and a second system tube.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of medical equipment, and in particular relates to a three-dimensional endoscope system. Background Art

[0002] Endoscopes can enter the human body through natural orifices or small incisions made during surgery. Minimally invasive surgery using endoscopes has the advantages of less trauma, greater safety, and higher precision, and is therefore widely used.

[0003] In minimally invasive surgery, the surgical field of view and image quality are crucial factors influencing the success of the procedure. With the advancement of endoscopic technology, the requirements for image quality have also increased. Traditional 2D (two-dimensional) images have a relatively limited depth of field and field of view and lack a sense of three-dimensionality. To further enhance surgical accuracy and reduce operational difficulty, 3D (three-dimensional) endoscopes can be used to improve image quality. This allows doctors to more intuitively observe the lesion during surgery, improving diagnostic accuracy, reducing treatment time and patient discomfort, and aligning with the development of minimally invasive surgery.

[0004] Existing optical endoscope technology generally uses a single optical path structure, while 3D endoscopes are generally electronic endoscopes with a sensor at the front end to capture and collect images, which is quite different from the conventional optical endoscope solution. There are very few cases of 3D endoscopes using optical structures. These cases use a dual-optical path three-layer tube structure, and the rear-end lighting outlet and imaging outlet are located on the same end face. Therefore, there are disadvantages such as difficult debugging, poor imaging consistency, and limited flexibility.

[0005] Therefore, the 2D images formed by commonly used endoscopes have a relatively small depth of field and field of view. While 3D endoscopes address the above image quality issues of traditional endoscopes, they are not yet widely used. The technology is not mature enough, and there are problems such as complex structure, difficult assembly, and poor imaging effects. Some also have high failure rates, poor imaging consistency, and inability to flexibly cooperate with external devices. Summary of the Invention

[0006] In order to solve one of the above technical problems, the present disclosure provides a three-dimensional endoscope system.

[0007] According to one aspect of the present disclosure, there is provided a three-dimensional endoscope system, comprising:

[0008] A main body assembly, comprising an outer tube, a first inner tube, a second inner tube, a first lens, a second lens, a bracket, and a main body;

[0009] An optical path component, the optical path component comprising a first optical path component and a second optical path component, the first optical path component and the second optical path component being arranged parallel to each other along an optical axis, and the first optical path component and the second optical path component being accommodated inside the main body component;

[0010] The first optical path assembly includes a first objective lens assembly, a first eyepiece lens assembly, and a first system tube. The first objective lens assembly includes a first objective lens optical path system and a first objective lens tube accommodating the first objective lens optical path system. The first eyepiece lens assembly includes a first eyepiece optical path system and a first eyepiece tube accommodating the first eyepiece optical path system. The first objective lens assembly and the first eyepiece lens assembly are connected front to back and accommodated in the interior of the first system tube. The first optical path assembly is accommodated in the interior of the first inner tube.

[0011] The second optical path assembly includes a second objective lens assembly, a second eyepiece assembly, and a second system tube. The second objective lens assembly includes a second objective lens optical path system and a second objective lens tube to accommodate the second objective lens optical path system. The second eyepiece assembly includes a second eyepiece optical path system and a second eyepiece tube to accommodate the second eyepiece optical path system. The second objective lens assembly and the second eyepiece assembly are connected front to back and accommodated inside the second system tube, and the second optical path assembly is accommodated inside the second inner tube.

[0012] According to at least one embodiment of the three-dimensional endoscope system of the present disclosure, the front end of the main body is fixedly connected to the rear end of the outer tube, the first optical path component and the second optical path component pass through the outer tube and the main body, the front ends of the first optical path component and the second optical path component are fixedly connected to the front end of the outer tube, and the rear ends of the first optical path component and the second optical path component are fixedly connected to the rear end of the main body, and a lighting entrance is provided on the side of the main body to introduce lighting light provided by an external light source.

[0013] According to the three-dimensional endoscope system of at least one embodiment of the present disclosure, a lighting outlet is provided at the front end of the outer tube, and the area of the lighting outlet is the same as the area of the lighting inlet.

[0014] According to the three-dimensional endoscope system of at least one embodiment of the present disclosure, the bracket is fixedly arranged at the front end of the outer tube, the lighting outlet is accommodated inside the bracket, the first lens and the second lens are fixedly connected to the front ends of the first inner tube and the second inner tube respectively, and pass through the bracket and are supported by the bracket, and are arranged parallel to the optical axis direction.

[0015] According to at least one embodiment of the present disclosure, the three-dimensional endoscope system further includes a prism portion, which includes a first relay prism, a second relay prism and a prism holder, wherein the first relay prism and the second relay prism are respectively arranged near the rear ends of the first optical path component and the second optical path component, and the imaging planes of the first relay prism and the second relay prism are respectively parallel to and coaxial with the imaging planes of the first optical path component and the second optical path component.

[0016] According to at least one embodiment of the present disclosure, the three-dimensional endoscope system further includes a sealing portion, which includes a sealing end cover and a protective sheet. The sealing end cover includes a first exit through-hole corresponding to the first image relay prism and a second exit through-hole corresponding to the second image relay prism. The protective sheet seals the first exit through-hole and the second exit through-hole.

[0017] According to the three-dimensional endoscope system of at least one embodiment of the present disclosure, the optical axis direction of the first exit hole is parallel to the optical axis direction of the second exit hole, and is not in the same end face as the incident direction of the illumination light introduced through the illumination inlet.

[0018] According to the three-dimensional endoscope system of at least one embodiment of the present disclosure, the first and second relay prisms are fixed to the prism holder and disposed inside the sealed space between the sealing portion and the main body.

[0019] According to at least one embodiment of the present disclosure, the three-dimensional endoscope system further includes an eyepiece cover fixedly connected to the main body, and the sealing portion is at least partially disposed between the eyepiece cover and the main body for sealing.

[0020] According to the three-dimensional endoscope system of at least one embodiment of the present disclosure, the first objective optical path system is set to the first objective tube and then debugged to form a first objective lens assembly, and the second objective optical path system is set to the second objective tube and then debugged to form a second objective lens assembly, and the first eyepiece optical path system is set to the first eyepiece tube and then debugged to form a first eyepiece assembly, and the second eyepiece optical path system is set to the second eyepiece tube and then debugged to form a second eyepiece assembly, the first objective lens assembly and the first eyepiece assembly are set in the first system tube and then debugged and placed in the first inner tube, and the second objective lens assembly and the second eyepiece assembly are set in the second system tube and then debugged and placed in the second inner tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0022] Figure 1 Schematic diagram of a three-dimensional endoscope system according to an embodiment of the present disclosure.

[0023] Figure 2 1 is an overall exploded schematic diagram of a three-dimensional endoscope system according to one embodiment of the present disclosure.

[0024] Figure 3 1 is an exploded schematic diagram of the main components of a three-dimensional endoscope system according to one embodiment of the present disclosure.

[0025] Figure 4 Schematic diagram of an exploded view of optical path components of a three-dimensional endoscope system according to one embodiment of the present disclosure.

[0026] Figure 5 3D endoscope system according to an embodiment of the present disclosure.

[0027] Figure 6 3D endoscope system according to one embodiment of the present disclosure.

[0028] Figure 7 Schematic diagram of the structure of an eyepiece cover of a three-dimensional endoscope system according to one embodiment of the present disclosure.

[0029] Description of Reference Numerals :

[0030] 10. 3D Endoscope System

[0031] 100 main components

[0032] 110 outer tube

[0033] 121 First inner tube

[0034] 122 First Shot

[0035] 131 Second inner tube

[0036] 132 Second Shot

[0037] 140 bracket

[0038] 141 Lighting Exit

[0039] 150 Main body

[0040] 151 Lighted entrance

[0041] 200 optical path components

[0042] 210 First optical path component

[0043] 211 First System Management

[0044] 212 First objective lens optical path component

[0045] 213 First eyepiece optical path assembly

[0046] 214 First objective tube

[0047] 215 First eyepiece tube

[0048] 220 Second optical path component

[0049] 221 Second System Management

[0050] 222 Second objective lens optical path component

[0051] 223 Second eyepiece optical path assembly

[0052] 224 Second objective tube

[0053] 225 Second eyepiece tube

[0054] 300 Prism Department

[0055] 311 First Image Reversal Prism

[0056] 312 Second image-transmitting prism

[0057] 320 Prism Holder

[0058] 400 Sealing part

[0059] 410 sealing end cap

[0060] 411 First emission hole

[0061] 412 Second exit hole

[0062] 420 protective sheet

[0063] 500 Eyepiece cover. DETAILED DESCRIPTION

[0064] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the relevant content and are not intended to limit the present disclosure. It should also be noted that, for ease of description, only the portions relevant to the present disclosure are shown in the accompanying drawings.

[0065] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure can be combined with each other. The technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0066] Unless otherwise stated, the exemplary embodiments / examples shown are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of the various embodiments / examples may be further combined, separated, interchanged, and / or rearranged without departing from the technical concepts of the present disclosure.

[0067] The use of cross hatching and / or shading in the accompanying drawings is generally used to make the boundaries between adjacent components clear. As such, unless otherwise indicated, the presence or absence of cross hatching or shading does not convey or indicate any preference or requirement for the specific materials, material properties, dimensions, proportions, commonalities between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the accompanying drawings, the sizes and relative sizes of the components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in a different order than described. For example, two successively described processes can be performed substantially simultaneously or in an order opposite to the order described. In addition, the same figure numbers represent the same components.

[0068] When a component is referred to as being “on,” “over,” “connected to,” or “coupled to” another component, the component may be directly on, directly connected to, or directly coupled to the other component, or intervening components may be present. However, when a component is referred to as being “directly on,” “directly connected to,” or “directly coupled to” another component, there are no intervening components present. For this purpose, the term “connected” may refer to a physical connection, an electrical connection, etc., with or without intervening components.

[0069] For descriptive purposes, the present disclosure may use spatially relative terms such as "below," "beneath," "under," "down," "above," "upper," "above," "higher," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the drawings is turned over, a component described as "below" or "beneath" another component or feature would then be positioned "above" the other component or feature. Thus, the exemplary term "below" can encompass both the "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and as such, the spatially relative descriptors used herein should be interpreted accordingly.

[0070] The terms used herein are for the purpose of describing specific embodiments and are not intended to be restrictive. As used herein, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, the features, integral bodies, steps, operations, parts, assemblies and / or their groups stated are explained, but the presence or addition of one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups is not excluded. It should also be noted that, as used herein, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values and / or the values provided that will be recognized by those of ordinary skill in the art.

[0071] According to one embodiment of the present disclosure, a three-dimensional endoscope system is provided. The three-dimensional endoscope system of the present disclosure has a four-layer structure, and the objective optical system and the eyepiece optical system are assembled after commissioning, thereby effectively reducing the assembly difficulty and improving the imaging effect. Furthermore, the present disclosure innovatively arranges the lighting inlet on the side of the main body, which allows for more flexible external lighting system connection. Furthermore, the three-dimensional endoscope system of the present disclosure can withstand high-temperature and high-pressure sterilization.

[0072] The three-dimensional endoscope system of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0073] Figure 1 FIG. 1 shows an overall schematic diagram of a three-dimensional endoscope system according to an embodiment of the present disclosure. Figure 2 FIG2 shows an overall exploded schematic diagram of a three-dimensional endoscope system according to an embodiment of the present disclosure. Figure 3 A schematic exploded view of the main components of a three-dimensional endoscope system according to an embodiment of the present disclosure is shown.

[0074] like Figure 1 and Figure 2 As shown, the three-dimensional endoscope system 10 of the present disclosure may include a main body assembly 100 , an optical path assembly 200 , a prism portion 300 , a sealing portion 400 and an eyepiece cover 500 .

[0075] In some embodiments of the present disclosure, the rear end of the main assembly 100 and the front end of the eyepiece cover 500 can be fixedly connected, wherein the sealing portion 400 is at least partially disposed between the main assembly 100 and the eyepiece cover 500 for achieving sealing.

[0076] like Figure 3As shown, the main body assembly 100 of the three-dimensional endoscope system 10 of the present disclosure may include an outer tube 110 , a first inner tube 121 , a second inner tube 131 , a first lens 122 , a second lens 132 , a bracket 140 and a main body 150 .

[0077] The first lens 122 is disposed at the front end of the first inner tube 121 and is fixedly connected to the front end of the first inner tube 121. The second lens 132 is disposed at the front end of the second inner tube 131 and is fixedly connected to the front end of the second inner tube 131.

[0078] Bracket 140 is configured to support first inner tube 121 and second inner tube 131. Bracket 140 is fixedly disposed near the front end outlet of outer tube 110 and is fixedly connected to outer tube 110. Bracket 140 supports first inner tube 121 and second inner tube 131, allowing them to be arranged parallel to each other along the optical axis within outer tube 110.

[0079] The bracket 140 may be provided with an illumination outlet 141. The area of the illumination outlet 141 is set to be the same as the area of the illumination inlet 151. The bracket 140 is provided near the front end outlet of the outer tube 110, that is, the illumination outlet 141 is provided near the front end outlet of the outer tube 110.

[0080] The front ends of the first inner tube 121, the second inner tube 131, and the outer tube 110 can be configured as beveled surfaces, correspondingly allowing the first and second lenses 122, 132 to be positioned at an angle. A protective sheet can be provided on the beveled surfaces of the front ends of the first and second lenses 122, 132. This protective sheet can be fixedly connected to the through-holes in which the first and second lenses 122, 132 are positioned. This protective sheet can be, for example, a sapphire protective sheet. The rear ends of the first and second lenses 122, 132 can be fixedly connected to the first and second inner tubes 121, 131, respectively. Similarly, the front end of the bracket 140 described above can also be configured as beveled surfaces. After the first and second lenses 122, 132 are assembled to the bracket 140, the front bevels of the first and second lenses 122, 132 can be flush with the front bevels of the bracket 140. Furthermore, the bracket 140 can be fixedly connected to the outer tube 110, and the front bevels of the bracket 140 can also be flush with the front bevels of the outer tube 110. In the present disclosure, the front ends of the first inner tube 121 and the second inner tube 131 and the first lens 122 and the second lens 132 are respectively placed in the through holes of the bracket 140 and fixedly connected.

[0081] like Figure 3As shown, the front end of the main body 150 of the three-dimensional endoscope system 10 is fixedly connected to the rear end of the outer tube 110. The main body 150 also includes a lighting inlet 151, which is arranged at the side end of the main body 150 to introduce the lighting light provided by the external light source. In the present disclosure, the end face where the lighting inlet 151 is located is configured to be different from the end face where the imaging plane of the first optical path component 210 and the second optical path component 220 is located. For example, the end face where the imaging plane is located can be parallel to the rear end face of the three-dimensional endoscope system 10, and the lighting inlet 151 can also be set at the side end face of the main body 150. In addition, the lighting inlet 151 can be filled with optical fibers and can be connected to an external light source through an external optical cable to provide lighting, so that the operator can clearly understand the internal conditions of the patient's body through the lighting light during use. According to the setting of the lighting inlet 151 of the present disclosure, it can allow a more clever and flexible external lighting system.

[0082] According to a further embodiment of the present disclosure, referring to Figure 2 As shown in the exploded view, the three-dimensional endoscope system may further include an optical path component 200, which may include a first optical path component 210 and a second optical path component 220, and the first optical path component 210 and the second optical path component 220 may be disposed inside the main body component 100. The first optical path component 210 and the second optical path component 220 pass through the outer tube 110 and the main body 150, and the front ends of the first optical path component 210 and the second optical path component 220 are fixedly connected to the front end of the outer tube 110, and the rear ends of the first optical path component 210 and the second optical path component 220 are fixedly connected to the rear end of the main body 150.

[0083] The first optical path component 210 and the second optical path component 220 may be configured to be arranged in parallel along the optical axis direction inside the main body assembly 100 .

[0084] The front end inclined surfaces of the first optical path component 210 and the second optical path component 220 are parallel to the front end inclined surface of the main body component 100 .

[0085] Figure 4 FIG. 1 is an exploded schematic diagram of optical path components of a three-dimensional endoscope system 10 according to an embodiment of the present disclosure.

[0086] like Figure 3 As shown, the optical components in the first optical path assembly 210 can be arranged in the first inner tube 121. Figure 4 Components contained in the first inner tube 121 are shown in FIG. Figure 4As shown, the first optical path assembly 210 may further include a first objective lens assembly 212, a first eyepiece lens assembly 213, and a first system tube 211. The first system tube 211 may be accommodated in the first inner tube 121, and the first objective lens assembly 212 and the first eyepiece lens assembly 213 may be accommodated in the first system tube 211. The first objective lens assembly 212 and the first eyepiece lens assembly 213 are configured to be placed in a front-to-back connection.

[0087] In the present disclosure, the first objective lens assembly 212 may include a first objective lens optical path system and a first objective lens tube 214. The first objective lens tube 214 is configured to accommodate the first objective lens optical path system. The first objective lens optical path system is placed in the first objective lens tube 214 and debugged. After the debugging is completed, the first objective lens assembly 212 is formed. The first eyepiece assembly 213 may include a first eyepiece optical path system and a first eyepiece tube 215, wherein the first eyepiece tube 215 is configured to accommodate the first eyepiece optical path system. The first eyepiece optical path system can be placed in the first eyepiece tube 215, and then debugged. After the debugging is completed, the first eyepiece assembly 213 can be formed.

[0088] The debugged first objective lens assembly 212 and the first eyepiece lens assembly 213 can be placed in the first system tube 211 and debugged. After the debugging is completed, the first objective lens and eyepiece lens system is formed.

[0089] Reference Figure 3 The optical components in the second optical path assembly 220 can be arranged in the second inner tube 131. Figure 4 1 shows the components contained in the second inner tube 131. Figure 4 As shown, the second optical path assembly 220 may include a second objective lens assembly 222, a second eyepiece lens assembly 223, and a second system tube 221. The second system tube 221 may be accommodated in the second inner tube 131, and the second objective lens assembly 222 and the second eyepiece lens assembly 223 may be accommodated in the second system tube 221. The second objective lens assembly 222 and the second eyepiece lens assembly 223 are configured to be placed in a front-to-back connection.

[0090] Similarly, the second objective lens assembly 222 may include a second objective lens optical path system and a second objective lens tube 224. The second objective lens tube is configured to accommodate the second objective lens optical path system. The second objective lens optical path system is placed in the second objective lens tube 224 and debugged. After the debugging is completed, the second objective lens assembly 222 is formed. The second eyepiece assembly 223 may include a second eyepiece optical path system and a second eyepiece tube 225, wherein the second eyepiece tube 225 is configured to accommodate the second eyepiece optical path system. The second eyepiece optical path system can be placed in the second eyepiece tube 225, and then debugged. After the debugging is completed, the second eyepiece assembly 223 is formed.

[0091] The debugged second objective lens assembly 222 and the second eyepiece lens assembly 223 can be placed in the second system tube 221 and debugged. After the debugging is completed, the second objective lens and eyepiece lens system is formed.

[0092] According to the method disclosed in the present invention, the modulated objective lens and eyepiece optical path system can be placed in the corresponding tubes respectively, which can reduce the difficulty of the assembly process and improve the imaging effect.

[0093] Reference Figure 2 The three-dimensional endoscope system may further include a prism portion 300 , the front end of the prism portion 300 is fixedly connected to the rear end of the main body component 100 , and the prism portion 300 is disposed inside the sealed space between the main body component 100 and the sealing portion 400 .

[0094] In the present disclosure, the prism unit 300 of the three-dimensional endoscope system 10 includes a first relay prism 311 and a second relay prism 312. Figure 5 As shown, the first relay prism 311 and the second relay prism 312 are respectively disposed at the rear ends of the first optical path component 210 and the second optical path component 220. In other words, the first relay prism 311 can be disposed corresponding to the rear end of the first eyepiece component 213, while the second relay prism 312 can be disposed corresponding to the rear end of the second eyepiece component 223. The imaging planes of the first relay prism 311 and the second relay prism 312 can be disposed parallel to the imaging planes of the first optical path component 210 and the second optical path component 220, respectively.

[0095] The prism unit 300 of the 3D endoscope system may further include a prism holder 320. The first relay prism 311 and the second relay prism 312 are fixedly connected to the prism holder 320, for example, they may be arranged at the side ends of the prism holder 320. The prism holder 320 may be fixedly connected to the main body 150.

[0096] The three-dimensional endoscope system further includes a sealing portion 400. Figure 6 , which shows the specific structure of the sealing portion 400. The sealing portion 400 includes a sealing end cap 410 and a protective sheet 420. The sealing end cap 410 can constitute the main body of the sealing portion 400. By arranging and fixing the sealing portion 400 between the main body 150 and the eyepiece cover 500, the sealing function of the internal components is achieved, thereby allowing the three-dimensional endoscope system to withstand high temperature and high pressure sterilization, etc., to avoid damage to the internal components. In the present disclosure, the sealing portion 400 can be fixedly connected to the main body 150 by welding, and the eyepiece cover 500 can be fixedly connected to the main body 150.

[0097] The sealing end cap 410 may include a first exit hole 411 and a second exit hole 412. In the present disclosure, the protective sheet 420 may be made of sapphire and may be fixed to the outside of the first exit hole 411 and the second exit hole 412 to achieve the sealing function of the first exit hole 411 and the second exit hole 412.

[0098] The first and second exit holes 411, 412 correspond to the first and second relay prisms 311, 312, respectively. The optical axis of the first and second exit holes 411, 412 are parallel and are not located on the same end face as the incident direction of the illumination light introduced through the illumination entrance 151.

[0099] The eyepiece cover 500 can be fixedly connected to the main body 150, and the sealing portion 400 is at least partially disposed between the eyepiece cover 500 and the main body 150 to provide a sealing function. The eyepiece cover 500 can be provided with two through holes, wherein the two through holes correspond to the first exit through hole 411 and the second exit through hole 412, respectively, for example, arranged coaxially. This allows the exiting light to be directed to the exterior of the eyepiece cover.

[0100] In the present disclosure, the first objective lens optical path system is set to the first objective tube and then debugged to form the first objective lens assembly, and the second objective lens optical path system is set to the second objective tube and then debugged to form the second objective lens assembly. The first eyepiece optical path system is set to the first eyepiece tube and then debugged to form the first eyepiece assembly, and the second eyepiece optical path system is set to the second eyepiece tube and then debugged to form the second eyepiece assembly. The first objective lens assembly and the first eyepiece assembly are set in the first system tube and then debugged and placed in the first inner tube, and the second objective lens assembly and the second eyepiece assembly are set in the second system tube and then debugged and placed in the second inner tube. The method of the present disclosure can effectively reduce the difficulty of assembly and improve the imaging effect. The present disclosure adopts a four-layer structure of outer tube, inner tube, system tube, objective tube and eyepiece tube. Compared with the prior art, the assembly difficulty is reduced and it can withstand high temperature and high pressure. In addition, the ingenious arrangement of the lighting entrance allows for more flexible external connection to the external lighting system.

[0101] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0102] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0103] Those skilled in the art will appreciate that the above embodiments are merely intended to clearly illustrate the present disclosure and are not intended to limit the scope of the present disclosure. Other changes or modifications may be made based on the above disclosure, and such changes or modifications are still within the scope of the present disclosure.

Claims

1. A three-dimensional endoscope system, characterized in that: include: A main body assembly, comprising an outer tube, a first inner tube, a second inner tube, a first lens, a second lens, a bracket and a main body; The optical path component includes a first optical path component and a second optical path component which are arranged in parallel along the optical axis and accommodated inside the main body component; the first optical path component includes a first objective lens component, a first eyepiece lens component, and a first system tube; the first objective lens component includes a first objective lens optical path system and a first objective lens tube accommodating the first objective lens optical path system; the first eyepiece lens component includes a first eyepiece optical path system and a first eyepiece tube accommodating the first eyepiece optical path system; the first objective lens component and the first eyepiece lens component are connected front to back and accommodated inside the first system tube; the first optical path component is accommodated inside the first inner tube; the second optical path component includes a second objective lens component, a second eyepiece lens component, and a second system tube; the second objective lens component includes a second objective lens optical path system and a second objective lens tube accommodating the second objective lens optical path system; the second eyepiece lens component includes a second eyepiece optical path system and a second eyepiece tube accommodating the second eyepiece optical path system; the second objective lens component and the second eyepiece lens component are connected front to back and accommodated inside the second system tube; the second optical path component is accommodated inside the second inner tube. The first objective optical path system is set to the first objective tube and then debugged to form a first objective lens assembly, the second objective optical path system is set to the second objective tube and then debugged to form a second objective lens assembly, the first eyepiece optical path system is set to the first eyepiece tube and then debugged to form a first eyepiece assembly, the second eyepiece optical path system is set to the second eyepiece tube and then debugged to form a second eyepiece assembly, the first objective lens assembly and the first eyepiece assembly are set in the first system tube and debugged and then placed in the first inner tube, and the second objective lens assembly and the second eyepiece assembly are set in the second system tube and debugged and then placed in the second inner tube.

2. The three-dimensional endoscope system according to claim 1, wherein: The front end of the main body is fixedly connected to the rear end of the outer tube, the first optical path component and the second optical path component pass through the outer tube and the main body, the front ends of the first optical path component and the second optical path component are fixedly connected to the front end of the outer tube, and the rear ends of the first optical path component and the second optical path component are fixedly connected to the rear end of the main body, and a lighting entrance is provided on the side of the main body to introduce lighting light provided by an external light source.

3. The three-dimensional endoscope system according to claim 2, wherein: The front end of the outer tube is provided with a lighting outlet, and the area of the lighting outlet is the same as the area of the lighting inlet.

4. The three-dimensional endoscope system according to claim 3, wherein: The bracket is fixedly arranged at the front end of the outer tube, the lighting outlet is accommodated inside the bracket, the first lens and the second lens are fixedly connected to the front ends of the first inner tube and the second inner tube respectively, and pass through the bracket and are supported by the bracket, and are arranged parallel to the optical axis direction.

5. The three-dimensional endoscope system according to claim 4, wherein: The optical system further includes a prism portion, which includes a first relay prism, a second relay prism, and a prism holder. The first relay prism and the second relay prism are respectively arranged near the rear ends of the first optical path component and the second optical path component, and the imaging planes of the first relay prism and the second relay prism are respectively parallel to and coaxial with the imaging planes of the first optical path component and the second optical path component.

6. The three-dimensional endoscope system according to claim 5, wherein: The invention also includes a sealing portion, which includes a sealing end cover and a protective sheet. The sealing end cover includes a first exit hole corresponding to the first image relay prism and a second exit hole corresponding to the second image relay prism. The protective sheet seals the first exit hole and the second exit hole.

7. The three-dimensional endoscope system according to claim 6, wherein: The optical axis direction of the first emission through hole is parallel to the optical axis direction of the second emission through hole, and is not on the same end surface as the incident direction of the illumination light introduced through the illumination entrance.

8. The three-dimensional endoscope system according to claim 7, wherein: The first and second relay prisms are fixed to the prism holder and are disposed inside a sealed space between the sealing portion and the main body.

9. The three-dimensional endoscope system according to claim 8, wherein: An eyepiece cover is also included. The eyepiece cover is fixedly connected to the main body, and the sealing portion is at least partially disposed between the eyepiece cover and the main body for sealing.

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