CN114947704A

CN114947704A - Three-dimensional endoscope system

Info

Publication number: CN114947704A
Application number: CN202210539390.4A
Authority: CN
Inventors: 毛荣壮; 辜长明
Original assignee: Qingdao O Mec Medical Technology Co ltd
Current assignee: Qingdao O Mec Medical Technology Co ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-08-30

Abstract

The present disclosure provides a three-dimensional endoscope system, comprising a body assembly, the body assembly comprising an outer tube, a first inner tube, a second inner tube, a first lens, a second lens, a bracket, a body portion; the optical path component comprises a first optical path component and a second optical path component which are arranged in parallel along the direction of an optical axis; the first and second optical path components are housed inside the body component; the first optical path component comprises a first objective lens component, a first eyepiece component and a first system pipe, the first objective lens component comprises a first objective optical path system and a first objective lens pipe for accommodating the first objective lens pipeline system, the first eyepiece component comprises a first eyepiece optical path system and a first eyepiece pipe for accommodating the first eyepiece optical path system, the first objective lens component and the first eyepiece component are connected in front and at the back and are accommodated in the first system pipe, and the second optical path component comprises a second objective lens component, a second eyepiece component and a second system pipe.

Description

Three-dimensional endoscope system

Technical Field

The disclosure belongs to the technical field of medical equipment, and particularly relates to a three-dimensional endoscope system.

Background

The endoscope can enter the human body through a natural pore canal of the human body or a small incision made by an operation, and the minimally invasive operation performed by using the endoscope has the advantages of small trauma, high safety and accuracy and the like, thereby being widely applied.

In minimally invasive surgery, the surgical field and the image quality are important factors influencing the success of the surgery. With the development of endoscope technology, the requirements for image quality have also increased. The depth of field range and the field range of the traditional 2D (two-dimensional) image are relatively limited and lack of stereoscopic impression, in order to further improve the accuracy of operation and reduce the operation difficulty, a 3D (three-dimensional) endoscope can be used for improving the image quality, a doctor can observe a pathological change part more intuitively when performing an operation, the diagnosis capability precision is improved, the treatment time and the discomfort of a patient are reduced, and the development direction of a minimally invasive operation is met.

The existing optical endoscope technology generally uses a single light path structure, while the 3D endoscope generally is an electronic endoscope, the front end of the endoscope is provided with a sensor for capturing and collecting images, and the difference from the common optical endoscope scheme is large. The 3D endoscope adopting the optical structure has few cases, and in the cases, a double-optical-path three-layer tube structure is adopted, and the rear-end illumination outlet and the imaging outlet are positioned on the same end face, so that the defects of high debugging difficulty, poor imaging consistency, poor flexibility and the like exist.

Thus, the commonly used endoscopes produce 2D images with a relatively small depth of field and a relatively small range of field of view. The 3D endoscope solves the image quality problems of the traditional endoscope, but is not generally used yet, the technology is not mature enough, the problems of complex structure, high assembly difficulty, poor imaging effect and the like exist, and the problems of high failure rate, poor imaging consistency, incapability of flexibly matching with external equipment and the like exist in part of the 3D endoscope.

Disclosure of Invention

To solve one of the above technical problems, the present disclosure provides a three-dimensional endoscope system.

According to an aspect of the present disclosure, there is provided a three-dimensional endoscope system comprising:

the main body assembly comprises an outer tube, a first inner tube, a second inner tube, a first lens, a second lens, a bracket and a main body part;

the light path component comprises a first light path component and a second light path component, the first light path component and the second light path component are arranged in parallel along the direction of an optical axis, and the first light path component and the second light path component are accommodated in the main body component;

the first optical path component comprises a first objective lens component, a first eyepiece component and a first system pipe, the first objective lens component comprises a first objective optical path system and a first objective lens pipe accommodating the first objective optical path system, the first eyepiece component comprises a first eyepiece optical path system and a first eyepiece pipe accommodating the first eyepiece optical path system, the first objective lens component and the first eyepiece component are connected in a front-back mode and accommodated in the first system pipe, and the first optical path component is accommodated in the first inner pipe;

the second optical path subassembly includes second objective lens subassembly, second eyepiece subassembly, second system pipe, the second objective lens subassembly includes second objective lens optical path system and holds the second eyepiece pipe of second objective lens optical path system, the second eyepiece subassembly includes second eyepiece optical path system and holds the second eyepiece pipe of second eyepiece optical path system, the second objective lens subassembly with second eyepiece subassembly front and back is connected and is held the inside of second system pipe, the second optical path subassembly holds the inside of second inner tube.

According to the three-dimensional endoscope system of at least one embodiment of the present disclosure, the front end of the main body portion is fixedly connected to the rear end of the outer tube, the first optical path assembly and the second optical path assembly penetrate through the outer tube and the main body portion, the front ends of the first optical path assembly and the second optical path assembly are fixedly connected to the front end of the outer tube, the rear ends of the first optical path assembly and the second optical path assembly are fixedly connected to the rear end of the main body portion, and an illumination inlet is opened at a side portion of the main body portion so as to introduce illumination light provided by an external light source.

According to the three-dimensional endoscope system of at least one embodiment of the present disclosure, the front end of the outer tube is provided with an illumination outlet, and an area of the illumination outlet is the same as an area of the illumination inlet.

According to the three-dimensional endoscope system of at least one embodiment of the present disclosure, the holder is fixedly provided at a front end of the outer tube, the illumination outlet is accommodated inside the holder, and the first lens and the second lens are fixedly connected to front ends of the first inner tube and the second inner tube, respectively, and are supported by the holder through the holder, being arranged in parallel in the optical axis direction.

The three-dimensional endoscope system according to at least one embodiment of the present disclosure further includes a prism portion including a first relay prism, a second relay prism, and a prism holder, the first relay prism and the second relay prism are respectively disposed near rear ends of the first optical path assembly and the second optical path assembly, and imaging planes of the first relay prism and the second relay prism are respectively parallel to and coaxial with imaging planes of the first optical path assembly and the second optical path assembly.

The three-dimensional endoscope system according to at least one embodiment of the present disclosure further includes a sealing portion including a sealing cap and a protection sheet, the sealing cap including a first exit through hole corresponding to the first relay prism and a second exit through hole corresponding to the second relay prism, the protection sheet sealing the first exit through hole and the second exit through hole.

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

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

A three-dimensional endoscope system in accordance with at least one embodiment of the present disclosure further includes an eyepiece cover fixedly connected with the body portion and the sealing portion is at least partially disposed between the eyepiece cover and the body portion to seal.

In accordance with at least one embodiment of the present disclosure, the first objective optical path system is set up to the first objective tube and adapted to form a first objective assembly and the second objective optical path system is set up to the second objective tube and adapted to form a second objective assembly, and the first eyepiece optical path system is set up to the first eyepiece tube and adapted to form a first eyepiece assembly and the second eyepiece optical path system is set up to the second eyepiece tube and adapted to form a second eyepiece assembly, the first objective assembly and the first eyepiece assembly being set up in the first system tube and adapted to be placed in the first inner tube, and the second objective assembly and the second eyepiece assembly being set up in the second system tube and adapted to be placed in the second inner tube.

Drawings

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

Fig. 1 is an overall schematic view of a three-dimensional endoscopic system according to one embodiment of the present disclosure.

FIG. 2 is an overall exploded schematic view of a three-dimensional endoscopic system according to one embodiment of the present disclosure.

Fig. 3 is an exploded schematic view of the body components of a three-dimensional endoscopic system according to one embodiment of the present disclosure.

FIG. 4 is an exploded schematic view of an optical path assembly of a three-dimensional endoscope system according to one embodiment of the present disclosure.

Fig. 5 is a schematic structural view of a prism section of a three-dimensional endoscope system according to an embodiment of the present disclosure.

Fig. 6 is a schematic structural view of a sealing portion of a three-dimensional endoscope system according to an embodiment of the present disclosure.

Fig. 7 is a schematic structural view of an eyepiece cover of a three-dimensional endoscope system according to one embodiment of the present disclosure.

Description of the reference numerals：

10 three-dimensional endoscope system

100 main body assembly

110 outer tube

121 first inner pipe

122 first lens

131 second inner tube

132 second lens

140 support

141 illumination outlet

150 main body part

151 illumination portal

200 optical path component

210 first light path component

211 first system pipe

212 first objective optical path component

213 first eyepiece optical path component

214 first objective lens tube

215 first eyepiece tube

220 second light path component

221 second system pipe

222 second objective optical path component

223 second eyepiece optical path component

224 second objective tube

225 second eyepiece tube

300 prism part

311 first image-rotating prism

312 second transfer prism

320 prism support

400 sealing part

410 seal end cap

411 first exit through hole

412 second exit via

420 protective sheet

500 eyepiece cover.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. Technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the illustrated exemplary embodiments/examples are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Accordingly, unless otherwise indicated, features of the various embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concept of the present disclosure.

The use of cross-hatching and/or shading in the drawings is generally used to clarify the boundaries between adjacent components. As such, unless otherwise noted, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, proportion, commonality between the illustrated components and/or any other characteristic, attribute, property, etc., of a component. Further, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced differently, the specific process sequence may be performed in a different order than that described. For example, two processes described consecutively may be performed substantially simultaneously or in reverse order to that described. In addition, like reference numerals denote like parts.

When an element is referred to as being "on" or "on," "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For purposes of this disclosure, the term "connected" may refer to physically, electrically, etc., and may or may not have intermediate components.

For descriptive purposes, the present disclosure may use spatially relative terms such as "below … …," below … …, "" below … …, "" below, "" above … …, "" above, "" … …, "" higher, "and" side (e.g., as in "side wall") to describe one component's relationship to another (other) component as illustrated in the figures. 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 figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below … …" can encompass both an orientation of "above" and "below". Further, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising" and variations thereof are used in this specification, the stated features, integers, steps, operations, elements, components and/or groups thereof are stated to be present but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximate terms and not as degree terms, and as such, are used to interpret inherent deviations in measured values, calculated values, and/or provided values that would be recognized by one of ordinary skill in the art.

According to one embodiment of the present disclosure, a three-dimensional endoscopic system is provided. According to the three-dimensional endoscope system disclosed by the invention, a four-layer structure is designed, and the objective optical system and the eyepiece optical system are assembled after debugging is completed, so that the assembling difficulty can be effectively reduced, and the imaging effect is improved. Also in the present disclosure, a lighting inlet is newly provided at a side of the main body part, so that the lighting system can be more flexibly externally connected. Also according to the three-dimensional endoscope system of the present disclosure, high temperature and high pressure sterilization can be endured.

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

Fig. 1 illustrates an overall schematic view of a three-dimensional endoscope system according to an embodiment of the present disclosure, fig. 2 illustrates an overall exploded schematic view of the three-dimensional endoscope system according to an embodiment of the present disclosure, and fig. 3 illustrates an exploded schematic view of a main body assembly of the three-dimensional endoscope system according to an embodiment of the present disclosure.

As shown in fig. 1 and 2, the three-dimensional endoscope system 10 of the present disclosure may include a body assembly 100, a light path assembly 200, a prism portion 300, a sealing portion 400, and an eyepiece cover 500.

In some embodiments of the present disclosure, the rear end of the body assembly 100 and the front end of the eyepiece cover 500 may be fixedly connected, wherein the sealing portion 400 is at least partially disposed between the body assembly 100 and the eyepiece cover 500 for effecting a seal.

As shown in fig. 3, the 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 body portion 150.

The first lens 122 is disposed at a 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 a front end of the second inner tube 131 and is fixedly connected with the front end of the second inner tube 131.

The bracket 140 is provided to support the first and second

inner tubes

121 and 131. The bracket 140 is fixedly disposed near the front end outlet of the outer tube 110 and is fixedly coupled to the outer tube 110. The first and second

inner tubes

121 and 131 are supported by the bracket 140 so that the first and second

inner tubes

121 and 131 can be arranged in parallel in the optical axis direction inside the outer tube 110.

An illumination outlet 141 may be provided on the bracket 140. The area of the illumination outlet 141 is set to be the same as that of the illumination inlet 151. The bracket 140 is disposed near the front end outlet of the outer tube 110, that is, the illumination outlet 141 is disposed near the front end outlet of the outer tube 110.

The front ends of the first inner tube 121, the second inner tube 131, and the outer tube 110 may be provided in the shape of an inclined plane, and accordingly, the first lens 122 and the second lens 132 are provided in an inclined state. A protection sheet may be disposed at the inclined plane of the front ends of the first lens 122 and the second lens 132, and the protection sheet may be fixedly connected to the through hole where the first lens 122 and the second lens 132 are disposed, and the protection sheet may be, for example, a sapphire protection sheet. The rear ends of the first and

second lenses

122 and 132 may be fixedly connected with the first and second

inner tubes

121 and 131, respectively. Likewise, the front end of the bracket 140 described above may also be provided in the shape of an inclined plane, and the front end inclined plane of the first lens 122 and the front end inclined plane of the second lens 132 may be flush with the front end inclined plane of the bracket 140 after the first lens 122 and the second lens 132 are assembled to the bracket 140. Also, the bracket 140 may be fixedly coupled to the outer tube 110, and the front end inclined surface of the bracket 140 may be flush with the front end inclined surface of the outer tube 110. In the present disclosure, the front ends of the first and second

inner tubes

121 and 131 and the first and

second lenses

122 and 132 are placed into the through holes of the bracket 140 and fixedly connected, respectively.

As shown in fig. 3, the distal 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 further includes an illumination inlet 151, and the illumination inlet 151 is disposed at a side end of the main body 150 so as to introduce illumination light provided from an external light source. In the present disclosure, the end face where the illumination inlet 151 is located is configured to be different from the end faces where the imaging planes of the first and second

light path components

210 and 220 are located. For example, the end surface at which the imaging plane is located may be parallel to the rear end surface of the three-dimensional endoscope system 10, and the illumination inlet 151 may be provided at the side end surface of the main body portion 150. In addition, the illumination inlet 151 may be filled with optical fibers and may be connected to an external light source through an external optical cable to provide illumination, so that the operator can clearly see the inside of the patient's body through illumination light during use. The provision of the lighting portal 151 according to the present disclosure may allow for a more clever and flexible external connection of the lighting system.

According to a further embodiment of the present disclosure, referring to the exploded view shown in fig. 2, the three-dimensional endoscope system may further include a light path assembly 200, the light path assembly 200 may include a first light path assembly 210 and a second light path assembly 220, and the first light path assembly 210 and the second light path assembly 220 may be disposed inside the body assembly 100. The first and second

optical path components

210 and 220 penetrate through the outer tube 110 and the main body 150, the front ends of the first and second

optical path components

210 and 220 are fixedly connected with the front end of the outer tube 110, and the rear ends of the first and second

optical path components

210 and 220 are fixedly connected with the rear end of the main body 150

The first and second

optical path members

210 and 220 may be configured to be disposed in parallel in the optical axis direction inside the body member 100.

The front end slopes of the first and second

light path members

210 and 220 are parallel to the front end slope of the body member 100.

FIG. 4 shows an exploded schematic view of the optical path components of the three-dimensional endoscope system 10 according to one embodiment of the present disclosure.

As shown in fig. 3, optical components and the like in the first light path assembly 210 may be disposed in the first inner tube 121. The components housed in the first inner tube 121 are shown in fig. 4. As shown in fig. 4, the first light path assembly 210 may further include a first objective lens assembly 212, a first eyepiece lens assembly 213, and a first system tube 211. Wherein the first system tube 211 may be received in the first inner tube 121, and the first objective lens assembly 212 and the first eyepiece lens assembly 213 may be received 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 tandem.

In the present disclosure, first objective lens assembly 212 may include a first objective optical path system and a first objective tube 214. The first objective tube 214 is configured to accommodate the first objective optical path system. The first objective optical path system is placed into the first objective tube 214 and commissioned, after which the first objective assembly 212 is constructed. The first eyepiece assembly 213 can include a first eyepiece optical path system and a first eyepiece tube 215, wherein the first eyepiece tube 215 is configured to receive the first eyepiece optical path system. The first eyepiece optics system may be placed into the first eyepiece tube 215 and then debugged, after which the first eyepiece assembly 213 may be constructed.

The first objective lens assembly 212 and the first eyepiece lens assembly 213 that have been adjusted can be placed into the first system tube 211 and adjusted, which after adjustment is complete constitutes the first objective eyepiece lens system.

Referring to fig. 3, optical components and the like in the second light path assembly 220 may be disposed in the second inner tube 131. The components housed by the second inner tube 131 are shown in fig. 4. As shown in fig. 4, 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. Wherein the second system pipe 221 may be accommodated in the second inner pipe 131, and the second objective lens assembly 222 and the second eyepiece lens assembly 223 may be accommodated in the second system pipe 221. Second eyepiece assembly 222 and second eyepiece assembly 223 are configured to be placed in tandem.

Likewise, the second objective lens assembly 222 may include a second objective optical path system and a second objective tube 224. The second objective tube is configured to accommodate the second objective optical path system. The second objective optical path system is placed into the second objective tube 224 and debugged, constituting the second objective assembly 222 after the debugging is completed. The second eyepiece assembly 223 can include a second eyepiece optical path system and a second eyepiece tube 225, wherein the second eyepiece tube 225 is configured to receive the second eyepiece optical path system. The second eyepiece optics may be placed into the second eyepiece tube 225 and then debugged, after which the second eyepiece assembly 223 may be constructed.

The second objective lens assembly 222 and the second eyepiece lens assembly 223 may be placed in the second system pipe 221 and debugged, and after the debugging is completed, the second objective lens eyepiece system is formed.

According to the mode disclosed by the invention, the modulated objective lens and the ocular lens optical path system can be respectively placed in the corresponding tubes, so that the difficulty in the assembling process can be reduced, and the imaging effect can be improved.

Referring to fig. 2, the three-dimensional endoscope system may further include a prism portion 300, a front end of the prism portion 300 is fixedly connected to a rear end of the main body assembly 100, and the prism portion 300 is disposed in a sealed space between the main body assembly 100 and the sealing portion 400.

In the present disclosure, the prism portion 300 of the three-dimensional endoscope system 10 includes a first relay prism 311 and a second relay prism 312. As shown in fig. 5, a first relay prism 311 and a second relay prism 312 are disposed at rear ends of the first and second

optical path assemblies

210 and 220, respectively. That is, the first relay prism 311 may be disposed corresponding to the rear end of the first eyepiece assembly 213, and the second relay prism 312 may be disposed corresponding to the rear end of the second eyepiece assembly 223. The imaging planes of the first and

second relay prisms

311 and 312 may be disposed to be parallel to the imaging planes of the first and second

optical path assemblies

210 and 220, respectively.

The prism part 300 of the three-dimensional endoscope system may further include a prism holder 320. The first and

second relay prisms

311 and 312 are fixedly coupled to the prism holder 320, and may be disposed at, for example, a side end of the prism holder 320. The prism holder 320 may be fixedly coupled to the main body 150.

The three-dimensional endoscope system further includes a sealing portion 400, and a specific structure of the sealing portion 400 is shown in fig. 6. The sealing part 400 includes a sealing end cap 410 and a protective sheet 420. The sealing end cap 410 may constitute a main body of the sealing part 400. The sealing function of the internal components is achieved by disposing and fixing the sealing part 400 between the main body part 150 and the eyepiece cover 500, so that the three-dimensional endoscope system can be allowed to withstand high-temperature high-pressure sterilization and the like, avoiding damage to the internal components. In the present disclosure, the sealing part 400 may be fixedly connected with the main body part 150 by welding, and the eyepiece cover 500 may be fixedly connected with the main body part 150.

The sealing end cap 410 may include a first exit through hole 411 and a second exit through hole 412. In the present disclosure, the protective sheet 420 may be of sapphire material, and may be fixed to the outer sides of the first and second exit through

holes

411 and 412 to perform the function of sealing the first and second exit through

holes

411 and 412.

The first and second exit through

holes

411 and 412 correspond to the first and

second relay prisms

311 and 312, respectively, one to one. The optical axis direction of the first exit through-hole 411 and the optical axis direction of the second exit through-hole 412 are parallel and not in the same end face as the incident direction of the illumination light introduced through the illumination inlet 151.

The eyepiece cover 500 may be fixedly connected with the main body portion 150, and the sealing portion 400 is at least partially disposed between the eyepiece cover 500 and the main body portion 150 and performs a sealing function. The eyepiece cover 500 may be provided with two through holes corresponding to the first exit through hole 411 and the second exit through hole 412, respectively, e.g., arranged coaxially. This allows the outgoing light to be directed to the outside of the eyepiece cover.

In the present disclosure, the first objective optical path system is debugged after being set to the first objective tube to form the first objective assembly and the second objective optical path system is debugged after being set to the second objective tube to form the second objective assembly, and the first eyepiece optical path system is debugged after being set to the first eyepiece tube to form the first eyepiece assembly and the second eyepiece optical path system is debugged after being set to the second eyepiece tube to form the second eyepiece assembly, the first objective assembly and the first eyepiece assembly are set in the first system tube to be debugged and then placed in the first inner tube, and the second objective assembly and the second eyepiece assembly are set in the second system tube to be debugged and then placed in the second inner tube. Through the mode disclosed by the invention, the assembly difficulty can be effectively reduced, and the imaging effect is improved. In the present disclosure, the four-layer structure of the outer tube, the inner tube, the system tube, and the objective tube and the eyepiece tube is adopted, and compared with the prior art, the assembly difficulty is reduced and the high temperature and high pressure are endured. And the external lighting system can be more flexibly connected through the ingenious arrangement of the lighting inlet.

In the description of the present specification, reference to the description of "one embodiment/mode", "some embodiments/modes", "example", "specific example", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the present application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims

1. A three-dimensional endoscopic system, comprising:

2. The three-dimensional endoscope system according to claim 1, wherein a front end of said main body portion is fixedly connected to a rear end of said outer tube, said first and second optical path assemblies penetrate said outer tube and said main body portion, front ends of said first and second optical path assemblies are fixedly connected to a front end of said outer tube, rear ends of said first and second optical path assemblies are fixedly connected to a rear end of said main body portion, and a side portion of said main body portion is opened with an illumination inlet so as to introduce illumination light provided from an external light source.

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

4. The three-dimensional endoscope system according to claim 3, wherein said holder is fixedly provided at a front end of said outer tube, said illumination outlet is accommodated inside said holder, and said first lens and said second lens are fixedly connected to front ends of said first inner tube and said second inner tube, respectively, and are supported by said holder through said holder, being arranged in parallel in the optical axis direction.

5. The three-dimensional endoscope system according to claim 4, further comprising a prism portion including a first relay prism, a second relay prism and a prism holder, said first relay prism and said second relay prism being disposed in the vicinity of the rear ends of said first optical path assembly and said second optical path assembly, respectively, and imaging planes of said first relay prism and said second relay prism being parallel to and coaxial with the imaging planes of said first optical path assembly and said second optical path assembly, respectively.

6. The three-dimensional endoscope system according to claim 5, further comprising a sealing portion including a sealing cap and a protective sheet, the sealing cap including a first exit through hole corresponding to said first relay prism and a second exit through hole corresponding to said second relay prism, the protective sheet sealing said first exit through hole and said second exit through hole.

7. The three-dimensional endoscope system according to claim 6, wherein an optical axis direction of said first exit through hole is parallel to an optical axis direction of said second exit through hole and is not in the same end face as an incident direction of the illumination light introduced through said illumination entrance.

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

9. The three dimensional endoscope system of claim 8, further comprising an eyepiece cover fixedly connected with said body portion and said sealing portion is at least partially disposed between said eyepiece cover and said body portion to seal.

10. The three-dimensional endoscope system according to any of claims 1-9 and wherein said first objective optical system is adapted to configure a first objective lens assembly when disposed in said first objective tube and said second objective optical system is adapted to configure a second objective lens assembly when disposed in said second objective tube, and wherein said first eyepiece optical system is adapted to configure a first eyepiece lens assembly when disposed in said first eyepiece tube and said second eyepiece optical system is adapted to configure a second eyepiece lens assembly when disposed in said second eyepiece tube, first objective lens assembly and first eyepiece lens assembly being adapted to be disposed in said first system tube and to be disposed in said first inner tube when adapted, and wherein said second objective lens assembly and second eyepiece lens assembly being adapted to be disposed in said second system tube and to be disposed in said second inner tube when adapted.