CN219533521U

CN219533521U - Optical system and superfine endoscope

Info

Publication number: CN219533521U
Application number: CN202223444818.1U
Authority: CN
Inventors: 陈东; 王伟
Original assignee: Xinguangwei Medical Technology Suzhou Co ltd
Current assignee: Xinguangwei Medical Technology Suzhou Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-08-15
Anticipated expiration: 2032-12-22

Abstract

The utility model discloses an optical system and an ultrafine endoscope, wherein the optical system comprises a first base, an imaging assembly and an illumination assembly, and the first base is provided with a first mounting channel and a second mounting channel; the imaging assembly comprises an imaging sensor, an imaging lens and an imaging guide piece, wherein the imaging sensor and the imaging lens are arranged in the first mounting channel, and the imaging guide piece at least partially extends out of the front end of the first mounting channel; the lighting assembly comprises a light source component and a lighting guide piece, the light source component is arranged in the second installation channel, the light emitting surface is arranged forwards, and the lighting guide piece at least partially extends out of the front end of the second installation channel; the first seat body is formed with a grid baffle wall, the first mounting channel and the second mounting channel are separated in each direction through the grid baffle wall, the grid baffle wall is made of a shading material, and a channel section of the second mounting channel for mounting the light source component is positioned in front of the imaging lens. The present utility model contributes to preventing light emitted from the light source unit from each direction from affecting the imaging quality of the imaging sensor.

Description

Optical system and superfine endoscope

Technical Field

The utility model relates to the technical field of endoscopes, in particular to an optical system and an ultrafine endoscope.

Background

The current endoscope includes the head end structure, and its head end structure includes light source part, imaging sensor and mount pad, and light source part and imaging sensor all set up the front end at the mount pad, and this leads to the light of the part that light source part sent to scatter to imaging sensor's photosurface on, reduces imaging sensor's imaging quality.

Disclosure of Invention

The utility model mainly aims to provide an optical system and an ultrafine endoscope, and aims to solve the problem that light rays emitted by a traditional light source component are easy to scatter to a photosensitive surface of an imaging sensor, so that imaging quality is reduced.

To achieve the above object, an optical system according to the present utility model includes:

the first seat body is respectively provided with a first installation channel and a second installation channel in a penetrating way along the front-back direction;

the imaging assembly comprises an imaging sensor, an imaging lens and an imaging guide piece which are sequentially arranged from back to front, wherein the imaging sensor and the imaging lens are arranged in the first mounting channel, and the imaging guide piece at least partially extends out of the front end of the first mounting channel; the method comprises the steps of,

the lighting assembly comprises a light source component and a lighting guide piece, wherein the light source component and the lighting guide piece are sequentially arranged from back to front, the light source component is arranged in the second installation channel, the light emitting surface of the light source component is arranged forward, and at least part of the lighting guide piece extends out from the front end of the second installation channel;

the first seat body is provided with a grid retaining wall, the first installation channel and the second installation channel are respectively spaced apart through the grid retaining wall, the grid retaining wall is made of a shading material, and a channel section of the second installation channel for the installation of the light source component is positioned in front of the imaging lens.

Optionally, the optical system further comprises:

the mounting seat is accommodated in the first mounting channel, and the front end of the mounting seat is used for mounting the imaging sensor;

the imaging circuit board is accommodated in the first mounting channel and is positioned at the rear side of the mounting seat; the method comprises the steps of,

the electric connecting piece is flexible and bendable, the front section of the electric connecting piece is connected with the imaging sensor, and the rear section of the electric connecting piece bypasses the mounting seat from one side of the mounting seat and then is connected with the imaging circuit board.

Optionally, the imaging circuit board is formed by at least one bending to form at least two circuit board sections with inferior angles, and the imaging circuit board is rotatably arranged in the first mounting channel in an adjusting manner.

Optionally, the optical system further comprises:

the mounting sleeve is sleeved outside the imaging lens and is movably and adjustably mounted in the first mounting channel along the front-back direction; the method comprises the steps of,

the locking piece is used for fixedly connecting the first seat body and the mounting sleeve when the mounting sleeve moves to a set position relative to the first seat body.

Optionally, the optical system further comprises a connecting seat, the connecting seat is connected to the front end of the first seat body, the connecting seat is provided with a wiring channel, and the wiring channel comprises a main channel section, and a first branch channel section and a second branch channel section which are respectively communicated with the rear end of the main channel section;

the rear end of the first branch channel section is communicated with the first installation channel, and the rear end of the second branch channel section is communicated with the second installation channel, so that the imaging guide piece penetrates through the first branch channel section and then penetrates through the main channel section, and the illumination guide piece penetrates through the second branch channel section and then penetrates through the main channel section.

Optionally, the imaging guide comprises an imaging fiber bundle section received in the main channel section, and the illumination guide comprises an illumination fiber bundle section received in the main channel section;

the optical system further includes:

an inner sleeve sleeved on the outer side of the imaging fiber bundle section, wherein the inner sleeve is made of a shading material, and the illumination fiber bundle section surrounds along the periphery of the inner sleeve; the method comprises the steps of,

and the outer sleeve is sleeved on the outer side of the inner sleeve, and the illumination fiber bundle section is limited between the inner sleeve and the outer sleeve.

Optionally, the connector comprises:

the outer wall of one side of the front section of the base is concavely arranged, and the first branch channel section and the second branch channel section are arranged at the rear section of the base; the method comprises the steps of,

the cover body is detachably connected with the base and covers the concave setting part, the cover body and the base are jointly enclosed at the concave setting part to form the main channel section, and the cover body is made of a shading material.

Optionally, the optical system further comprises:

the second seat body is positioned behind the first seat body, and a mounting cavity is formed in the second seat body;

the main control circuit board is accommodated in the mounting cavity; the method comprises the steps of,

the main control electric connecting piece is flexible and bendable, the front section of the main control electric connecting piece stretches into the first installation channel and is connected with the imaging circuit board, and the rear section of the main control electric connecting piece stretches into the installation cavity and is connected with the main control circuit board.

Optionally, the optical system further includes an electrical connector, the electrical connector is connected with the main control circuit board, the electrical connector includes a connection portion, and at least the connection portion is exposed at the outer side of the second base.

In addition, the present utility model also provides an ultra-fine endoscope including an optical system including:

According to the technical scheme provided by the utility model, the first installation channel provides an installation space of the imaging assembly, and the second installation channel provides an installation space of the illumination assembly, so that the imaging assembly and the illumination assembly can be installed quickly and accurately; the first mounting channel and the second mounting channel are separated in each direction through the grid blocking wall, and the grid blocking wall has a shading function, so that light emitted by the light emitting surface of the light source component can only emit forward and cannot be scattered to the first mounting channel from side directions; and, the light source part is installed more forward than the imaging lens for the light that the light source part sent forward also can not scatter to the imaging lens and the imaging sensor that lie in the rear. The present utility model contributes to preventing light emitted from the light source unit from each direction from affecting the imaging quality of the imaging sensor.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of an embodiment of an ultra-fine endoscope provided by the present utility model;

FIG. 2 is a schematic diagram of a portion of the optical system of FIG. 1;

FIG. 3 is an exploded schematic view of the main structure of the optical system of FIG. 1;

FIG. 4 is a schematic cross-sectional view of the structure at A-A in FIG. 3;

FIG. 5 is a schematic view of an assembly at the imaging sensor of FIG. 3;

FIG. 6 is a schematic view of an assembly at the imaging lens of FIG. 3;

FIG. 7 is a schematic view in longitudinal section of a portion of the optical system of FIG. 1;

FIG. 8 is a schematic cross-sectional view of the first housing, the connecting seat and the locking member of FIG. 1;

fig. 9 is an exploded view of the main structure of the second housing in fig. 1.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				1	Superfine endoscope	310	Light source component
100	First seat body	320	Lighting guide
				110	First mounting channel	321	Illuminating fiber bundle segments
111	A first channel section	400	Locking piece
				112	Second channel section	500	Connecting seat
113	Third channel segment	501	Base seat
				120	Second mounting channel	502	Cover body
130	Grating wall	510	Main channel section
				140	Threaded hole	520	A first branch channel section
200	Imaging assembly	530	Second branching channel section
				210	Imaging sensor	610	Inner sleeve
221	Imaging lens	620	Outer sleeve
				222	Mounting sleeve	710	Second seat body
230	Imaging guide	711	Mounting cavity
				231	Imaging fiber bundle section	720	Main control circuit board
240	Mounting base	730	Main control electric connector
				250	Imaging circuit board	740	Electric connector
251	Circuit board section	750	Protective cover
				260	Electric connector	800	Outer casing
300	Lighting assembly	900	Fixing sleeve

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 3 and 7 to 8, the present utility model provides an optical system for use in an ultra-fine endoscope 1, which includes a first housing 100, an imaging assembly 200, and an illumination assembly 300. Wherein, the first seat body 100 is respectively provided with a first installation channel 110 and a second installation channel 120 along the front-back direction; the imaging assembly 200 includes an imaging sensor 210, an imaging lens 221 and an imaging guide 230 sequentially disposed from the back to the front, the imaging sensor 210 and the imaging lens 221 are disposed in the first mounting channel 110, and the imaging guide 230 at least partially protrudes from the front end of the first mounting channel 110; the lighting assembly 300 comprises a light source component 310 and a lighting guide 320 which are sequentially arranged from back to front, wherein the light source component 310 is installed in the second installation channel 120, the light emitting surface is arranged forward, and at least part of the lighting guide 320 extends out from the front end of the second installation channel 120; wherein the first housing 100 is formed with a barrier wall 130, the first mounting channel 110 and the second mounting channel 120 are spaced apart in each direction by the barrier wall 130, the barrier wall 130 is made of a light shielding material, and a channel section of the second mounting channel 120 for mounting the light source component 310 is located in front of the imaging lens 221.

In the technical scheme provided by the utility model, the first mounting channel 110 provides the mounting space of the imaging assembly 200, and the second mounting channel 120 provides the mounting space of the illumination assembly 300, so that the imaging assembly 200 and the illumination assembly 300 can be quickly and accurately mounted; the first mounting channel 110 and the second mounting channel 120 are spaced apart in each direction by the barrier wall 130, and the barrier wall 130 has a light shielding function, so that the light emitted from the light emitting surface of the light source component 310 can only emit forward, and cannot be scattered from the side to the first mounting channel 110; also, the light source part 310 is mounted more forward than the imaging lens 221, so that the light emitted forward from the light source part 310 is not scattered to the imaging lens 221 and the imaging sensor 210 located at the rear. The present utility model helps prevent light emitted from the light source part 310 from various directions from affecting the imaging quality of the imaging sensor 210.

In the following and the above embodiments, the direction of the ultra-fine endoscope 1 toward the lesion site of the patient is defined as the forward direction and the direction away from the lesion site of the patient is defined as the backward direction in use, in order to facilitate the clear description of the relative positional relationship between the optical system and each member on the ultra-fine endoscope 1.

Based on the above, in the present embodiment, the first mounting channel 110 and the second mounting channel 120 are spaced apart in each direction by the barrier wall 130, so as to help reduce the influence of the light emitted from the light source component 310 on the photosurface of the imaging sensor 210. The grid baffle 130 can be separately arranged with the first seat body 100 and detachably connected, at this time, the first seat body 100 can be made of a required material according to actual needs, and only the grid baffle 130 is made of a shading material. Or in an embodiment, the first base 100 is made of a light shielding material, and a portion of the first base 100 between the first mounting channel 110 and the second mounting channel 120 forms the grid barrier 130. In this way, the first seat 100 and the grid baffle 130 are integrally formed, so that the first seat 100 and the grid baffle 130 do not need to be assembled and disassembled, and the first seat 100 and the grid baffle 130 are convenient to process and form.

The present design does not limit the specific form of the first housing 100, but it can be appreciated that when the optical system is applied to the ultra-fine endoscope 1 and is normally put into use, the first housing 100 is generally held by an operator, so as to facilitate the operator to perform the related operation by using the ultra-fine endoscope 1. Accordingly, the first housing 100 is generally more convenient for the operator to hold in terms of its shape and size, for example, the first housing 100 generally has a cylindrical shape extending in the front-rear direction, and its outer diameter is generally sized for the operator to hold in one hand.

For ease of understanding, the following description will be given by taking the first housing 100 as an example having a substantially cylindrical shape:

the first and second mounting passages 110 and 120 each extend in the front-rear direction, and the first and second mounting passages 110 and 120 are disposed at certain radial intervals along the first housing 100. The first mounting channel 110 and/or the second mounting channel 120 may be provided as straight channels, based on which the first mounting channel 110 and/or the second mounting channel 120 may be parallel to the axial direction of the first housing 100 or extend gradually and obliquely in the axial direction of the first housing 100 towards a certain radial direction of the first housing 100. Of course, the first mounting channel 110 and/or the second mounting channel 120 may be configured as a curved channel that is bent at least once, or a composite shape that combines a straight channel and a curved channel.

Referring to fig. 7 to 8, in the present embodiment, the first mounting channel 110 and the second mounting channel 120 are all straight channels, and the first mounting channel 110 penetrates through the middle of the first seat 100 to form a first channel section 111 and a second channel section 112 that are sequentially communicated from back to front, wherein the imaging sensor 210 is disposed in the first channel section 111, and the imaging lens 221 is disposed in the second channel section 112. The imaging guide 230 may be coupled outside the first mounting channel 110; or further, when the rear section of the imaging guide 230 is fixedly coupled within the first mounting channel 110, the first mounting channel 110 may further include a third channel section 113 positioned in front of the second channel section 112, with the rear section of the imaging guide 230 being fixed to the third channel section 113.

The second mounting channel 120 is located at a side of the first mounting channel 110 and is close to an edge of the first base 100, the second mounting base 240 includes a fourth channel segment and a fifth channel segment which are sequentially communicated from front to back, the light source component 310 is disposed at the fourth channel segment, the electrical connector 260 electrically connected with the light source component 310 is defined as an illumination electrical connector, the illumination electrical connector can be disposed at the fifth channel segment, and the first channel segment 111 can penetrate through a side wall of the first base 100, so as to facilitate operations such as wiring, dismounting and maintenance of the illumination electrical connector through the penetration.

It should be noted that, the portion of the first base 100 where the first mounting channel 110 is formed and the portion of the first base where the second mounting channel 120 is formed may be integrally formed, that is, the first mounting channel 110 and the second mounting channel 120 are directly formed on the same block structure. Alternatively, the first seat body 100 may be provided separately from the first mounting passage 110 and the second mounting passage 120, and may have two block structures, which are connected to each other as appropriate.

In addition, taking the first mounting channel 110 as an example, the portion of the first base 100 where the first channel section 111 is formed, the portion where the second channel section 112 is formed, and the portion where the third channel section 113 is formed may be integrally formed or separately and sectionally formed, which is not limited. The second mounting channel 120 is similar and will not be described in detail.

The specific type of the imaging sensor 210 is not limited, and may be, for example, CMOS (Complementary Metal Oxide Semiconductor ) or CCD (Charge-coupled Device, alias: image controller). Of course, the imaging sensor 210 may be any other image control device suitable for use in an endoscope, without limitation.

The electrical connector 260 electrically connected to the imaging sensor 210 is an imaging electrical connector, which is convenient for the imaging electrical connector to be led out backward by installing the imaging sensor 210 in the first channel section 111 near the rear section of the first housing 100, and does not interfere with the installation and operation of the imaging lens 221, the imaging guide 230, etc.

Specifically, referring to fig. 5, in an embodiment, the optical system further includes a mounting base 240, an imaging circuit board 250, and an electrical connector 260. Wherein the mounting seat 240 is accommodated in the first mounting channel 110, and the front end of the mounting seat 240 is used for mounting the imaging sensor 210; the imaging circuit board 250 is accommodated in the first mounting channel 110 and is located at the rear side of the mounting seat 240; the electrical connector 260 is flexibly bendable, the front section of the electrical connector 260 is connected with the imaging sensor 210, and the rear section of the electrical connector 260 bypasses the mounting seat 240 from one side of the mounting seat 240 and is connected with the imaging circuit board 250.

In the present embodiment, the mount 240 provides a mounting carrier for the imaging sensor 210, so that the chip-shaped imaging sensor 210 can be stably mounted on the mount 240, and the light sensing surface is kept frontward; and, the mounting seat 240 is supported on the inner wall of the first channel section 111, and can be fixedly connected with the inner wall of the first channel section 111, or can be movably abutted with the inner wall of the first channel section 111, so as to ensure that the relative position of the imaging sensor 210 in the first channel section 111 is fixed in the use process.

The imaging circuit board 250 is substantially plate-shaped, and its specific structure may be edited and prepared according to actual needs so that the imaging circuit board 250 has a desired function such as a signal receiving function and a signal transmitting function. The imaging circuit board 250 may be set to a required size according to actual needs, and, like the mounting seat 240, the imaging circuit board 250 is supported on the inner wall of the first channel section 111, may be fixedly connected with the inner wall of the first channel section 111, or may be movably abutted with the inner wall of the first channel section 111.

In a further aspect, referring to fig. 5, the imaging circuit board 250 is bent at least once to form at least two circuit board segments 251 with inferior angles, and the imaging circuit board 250 is rotatably disposed in the first mounting channel 110. Specifically, the imaging circuit board 250 may be bent at a bad angle along its center line to obtain two circuit board sections 251; alternatively, the imaging circuit board 250 may be bent twice along its length direction (corresponding to a certain radial direction of the first housing 100) to form an acute angle, so as to obtain three circuit board segments 251. The dimensions and angles of the circuit board segments 251 may be the same or may be at least partially different. It can be appreciated that by bending the imaging circuit board 250, the space occupation of the imaging circuit board 250 in the bending direction can be effectively reduced, so that the imaging circuit board 250 after bending is conveniently inserted into the first channel section 111 and movably abuts against the inner wall of the first channel section 111, so that an operator can adjust the orientation of the imaging circuit board 250 relative to the first channel section 111 by rotating any circuit board section 251, and the design of connecting the mounting seat 240 and the imaging circuit board 250 by combining the electrical connector 260 can enable the rotation of the imaging circuit board 250 to realize the rotation of the mounting seat 240 and the imaging sensor 210, thereby being helpful for solving the abnormality by rotating the imaging sensor 210 when the orientation relation among the imaging sensor 210, the imaging lens 221 and the imaging guide 230 is abnormal.

Further, in order to facilitate the manual driving of the rotation of the imaging circuit board 250 by the operator, in an embodiment, the optical system further comprises an adjusting seat, wherein the front section of the adjusting seat is fixedly connected with the imaging circuit board 250 and is located at the rear of the imaging circuit board 250, and the rear section of the adjusting seat extends from the first channel section 111 to facilitate the manual rotation operation by the operator,

The electrical connector 260 is in a flexible and bendable arrangement, such as a flexible circuit board (Flexible Printed Circuit, FPC). One end of the electrical connector 260 is connected to the front end surface of the mounting base 240 and electrically connected to the imaging sensor 210, and the other end of the electrical connector 260 extends backward along one side surface of the mounting base 240 and is fixed to the rear end surface of the mounting base 240 or directly electrically connected to the imaging circuit board 250. The electrical connector 260 is flexibly bendable, so that the electrical connector 260 can be adapted to the mounting base 240, the first channel section 111 and the imaging circuit board 250 with different shapes and sizes, and particularly when the imaging sensor 210 and the mounting base 240 can be driven by the imaging circuit board 250 to rotate, the electrical connector 260 can keep fit with the surface of the mounting base 240, so as to avoid interference in the process of rotation and movement.

The imaging lens 221 serves to magnify image information that the imaging guide 230 guides transfer. In a specific application, the focal length of the imaging lens 221 may be set around 10 mm; the specific type of imaging lens 221 is not limited, and in one embodiment, imaging lens 221 may be an achromatic cemented doublet lens group, i.e., a lens group capable of correcting chromatic aberration of light rays of three wavelengths (blue, green, and red). For a cemented doublet, the gap in the two lenses is actually equivalent to the third lens, helping to better eliminate chromatic aberration. Thus, by providing the imaging lens 221 as an achromatic doublet lens group, it helps balance aberrations over a fairly broad band, functioning in the broadband imaging field.

The imaging lens 221 may be directly mounted in the second channel segment 112, or in an embodiment, referring to fig. 6, the optical system further includes a mounting sleeve 222 and a locking member 400, the mounting sleeve 222 is sleeved outside the imaging lens 221, and the mounting sleeve 222 is movably mounted in the first mounting channel 110 along the front-back direction; the locking member 400 is configured to fixedly connect the first seat 100 and the mounting sleeve 222 when the mounting sleeve 222 moves to a set position relative to the first seat 100.

It will be appreciated that the mounting sleeve 222 mounts and secures the peripheral side of the imaging lens 221, but does not block the light transmitting region of the imaging lens 221. The outer diameter and shape of the mounting sleeve 222 is adapted to the inner diameter and shape of the second channel segment 112, such that the mounting sleeve 222 can be movably adjusted in the forward and backward directions within the second channel segment 112 and can be fixed relative to the second channel segment 112 when adjusted to a set position. The mounting sleeve 222 is equivalent to performing focal length adjustment in the process of driving the imaging lens 221 to move back and forth, so that the imaging lens can be adjusted to a relatively clear position. The back and forth adjustment distance of the mounting sleeve 222 is not limited, and for example, in one embodiment, the mounting sleeve 222 may be movable in the range of 0.5mm to 5 mm.

The locking member 400 may be disposed within the second channel segment 112 or may be disposed outside the second channel segment 112. The locking member 400 can lock and release the mounting sleeve 222, and when locking, the fixing mode between the locking member 400 and the mounting sleeve 222 is not limited, and may be one or more of screw fixing, fastening fixing, adhesive fixing, magnetic attraction fixing or adsorption fixing.

In particular, in one embodiment, referring to fig. 8, the locking member 400 may be a threaded member, such as a bolt, a shaft, or a screw. One side of the first seat body 100 is provided with a threaded hole 140 communicated with the second channel section 112, and the locking piece 400 is in threaded fit with the threaded hole 140, so that when the screw-in piece is screwed in, the screw-in piece abuts against the mounting sleeve 222 and presses and fixes the mounting sleeve 222 at the inner wall of the other side of the first channel section 111 opposite to the first channel section, and locking of the mounting sleeve 222 is realized; conversely, when the screw is unscrewed, it is separated from the mounting sleeve 222, and enough space is formed for the mounting sleeve 222 to move back and forth.

The imaging guide 230 and the illumination guide 320 are generally formed of fiber optic bundles, i.e., a plurality of optical fibers connected in a bundle, which can better conduct the optical signals. The specification of the optical fiber can be chosen to be 9000 pixels, for example, or can be chosen to be other.

In addition, referring to fig. 7 to 8, in an embodiment, the optical system of fig. 5 further includes a connection base 500, the connection base 500 is connected to the front end of the first base 100, the connection base 500 is provided with a routing channel, and the routing channel includes a main channel section 510, and a first branch channel section 520 and a second branch channel section 530 that are respectively communicated with the rear end of the main channel section 510. The rear end of the first branch channel section 520 is communicated with the first mounting channel 110, and the rear end of the second branch channel section 530 is communicated with the second mounting channel 120, so that the imaging guide 230 passes through the first branch channel section 520 and then passes through the main channel section 510, and the illumination guide 320 passes through the second branch channel section 530 and then passes through the main channel section 510.

It will be appreciated that the connection socket 500 is detachably connected to the first socket body 100, and the connection socket 500 and the first socket body may be fixed by, for example, screw engagement between external screw threads and internal screw threads. In a further aspect, one of the joints of the connection socket 500 and the first socket body 100 may be provided with a marking portion, and the other one thereof is provided with a matching portion, so that when the connection socket 500 is fixedly connected with the first socket body 100, the relative positions between the connection socket 500 and the first socket body 100 are facilitated to be fixed by the positioning matching between the marking portion and the matching portion, thereby aligning the first branch channel section 520 with the first mounting channel 110 and the second branch channel section 530 with the second mounting channel 120. The marking portion may be any suitable marking structure such as text, pattern, color, symbol, etc., and is not limited thereto.

The main channel section 510 may be integrally provided with the first branch channel section 520, or the main channel section 510 may be separately provided and then connected to the first branch channel section 520. The imaging guide 230 passes through the first branch channel segment 520, then enters the main channel segment 510, and finally passes out from the front end of the main channel segment 510. Wherein the imaging guide 230 at the main channel section 510 constitutes an imaging fiber bundle section 231; the illumination guide 320 passes through the second branch channel segment 530, then into the main channel segment 510, and finally out from the front end of the main channel segment 510. Wherein the illumination guides 320 located in the main channel section 510 constitute an illumination fiber bundle section 321.

By arranging the first branch channel section 520 and the second branch channel section 530, the first mounting channel 110 and the second mounting channel 120 can be aligned respectively, so that the imaging guide 230 can enter the first branch channel section 520 in a homeotropic manner, and the illumination guide 320 can enter the second branch channel section 530 in a homeotropic manner, and adverse effects on the photosurface of the imaging sensor 210 caused by light emitted by the light source component 310 can be further reduced. By the arrangement of the main channel section 510, the imaging fiber bundle section 231 and the illumination fiber bundle section 321 are sufficiently close to each other, so that the illumination fiber bundle section 321 is convenient for illuminating the imaging fiber bundle section 231, and the illumination display effect is improved.

Based on the above, the imaging guide 230 may be installed at the above-described third channel section 113, and/or at the first branch channel section 520 of the connection block 500. Wherein, taking the example that the imaging guide 230 is mounted at the third channel section 113, the imaging guide 230 may be directly limited at the third channel section 113; alternatively, imaging guide 230 is fixedly coupled at third channel segment 113 by, for example, a fixed sleeve 900. The retaining sleeve 900 is capable of retaining bundled optical fibers as one piece and facilitates installation at the third channel segment 113. Furthermore, the fixing sleeve 900 facilitates centering of the imaging guide 230, and facilitates alignment of the imaging guide 230, the imaging lens 221, and the photosurface of the imaging sensor 210. The attachment between the fixing sleeve 900 and the image guide 230 may be adhesive or otherwise.

Of course, the illumination guide 320 may be mounted at the fourth channel section described above, and/or at the second branch channel section 530 of the connection block 500, as in the imaging guide 230; can be directly installed or indirectly installed through the fixing sleeve 900, and will not be described in detail.

Referring to fig. 3 to 4, in an embodiment, the optical system further includes an inner sleeve 610 and an outer sleeve 620, wherein the inner sleeve 610 is sleeved outside the imaging fiber bundle section 231, the inner sleeve 610 is made of a light shielding material, and the illumination fiber bundle section 321 surrounds along the outer circumference of the inner sleeve 610; the outer sleeve 620 is sleeved outside the inner sleeve 610, and the illumination fiber bundle section 321 is limited between the inner sleeve 610 and the outer sleeve 620.

For a particular application, the outer diameter of the imaging fiber bundle section 231 may be set to, for example, 0.29mm, or otherwise. Wrapping the imaging fiber bundle section 231 with the inner sleeve 610 facilitates compact and unitary individual imaging fibers of the imaging fiber bundle section 231. The outer diameter of the inner sleeve 610 may be set to 0.335mm or otherwise. The inner diameter of the inner sleeve 610 may be set to 0.29mm or otherwise.

The illumination fiber bundles are distributed along the circumferential direction of the inner jacket so as to be able to illuminate the directions of the imaging guide 230. Since the second mounting channel 120 is located at one side of the first mounting channel 110, and the first branching channel section 520 is located at one side of the second branching channel section 530, the illumination fiber bundle section 321 enters the main channel section 510 from one side of the main channel section 510, and in order to facilitate the mounting of the illumination fiber bundle section 321, the thickness of the illumination fiber bundle section 321 is set gradually thicker in the direction from the first mounting channel 110 to the second mounting channel 120 in practical application, so that most of the Zhaoming fiber bundle section is arranged between the inner sleeve 610 and the outer sleeve 620 without twisting and bending too much Zhaoming fiber.

The outer sleeve 620 wraps around the illumination fiber bundle section 321 and the entire circumference of the inner sleeve 610. The outer sleeve 620 may be generally configured to have a certain elasticity, and may be suitably bent to prevent the illumination fiber bundle section 321 and the imaging fiber bundle section 231 from being broken. The outer sleeve 620 may be made of a metal capillary, such as a stainless steel capillary.

Further, referring to fig. 2 to 3, in an embodiment, the connection base 500 includes a base 501 and a cover 502. Wherein the outer wall of the front section of the base 501 is concavely arranged, and the rear section of the base 501 is provided with the first branch channel section 520 and the second branch channel section 530; the cover 502 is detachably connected with the base 501, and covers the recess setting, the cover 502 and the base 501 enclose the recess setting to form the main channel section 510, and the cover 502 is made of a light shielding material. The base 501 and the cover 502 are arranged to facilitate the disassembly and assembly of the base 501 and the cover 502, so that the wiring of the illumination fiber bundle section 321 and the imaging fiber bundle section 231 can be visually controlled.

In addition, referring to fig. 1 and 9, in an embodiment, the optical system further includes a second base 710, a main control circuit board 720, and a main control electrical connector 730, wherein the second base 710 is located at the rear of the first base 100, and a mounting cavity 711 is formed inside the second base 710; the main control circuit board 720 is accommodated in the mounting cavity 711; the main control electric connector 730 is flexibly and flexibly arranged, the front section of the main control electric connector 730 extends into the first mounting channel 110 and is connected with the imaging circuit board 250, and the rear section of the main control electric connector 730 extends into the mounting cavity 711 and is connected with the main control circuit board 720.

It will be appreciated that the imaging electrical connectors and the illumination electrical connectors extend back to connect with the main control electrical connector 730, so that the main control circuit board 720 can receive the signal sent by the imaging sensor 210, supply power to the imaging sensor 210 and the illumination component, and control the opening and closing of the imaging sensor 210 and the illumination component.

The main control circuit board 720 is installed through the second seat 710, that is, the holding part of the operator is staggered with the main control circuit board 720, so that the heat of the main control circuit board 720 and the holding of the operator are prevented from being affected mutually. The imaging electrical connector, the illumination electrical connector, and the main control electrical connector 730 may all be provided as wires or the like.

In addition, in an embodiment, the optical system further includes an electrical connector 740, the electrical connector 740 is connected to the main control circuit board 720, and the electrical connector 740 includes a connection portion, at least the connection portion is exposed at the outer side of the second base 710. The electrical connector 740 is, for example, a USB connector, and a socket of the USB connector, that is, a connection portion, is available for plugging into other terminal devices. In a further aspect, the optical system further includes a protective cover 750, where the protective cover 750 covers the connection portion of the electrical connector 740, such as a socket of a USB connector.

Furthermore, referring to fig. 1 to 3, based on any of the above embodiments, the present utility model also provides an ultra-fine endoscope 1 including the optical system as described above. It should be noted that, the detailed structure of the optical system in the ultra-fine endoscope 1 can refer to the embodiment of the optical system, and will not be described herein again; since the above optical system is used in the ultra-fine endoscope 1 of the present utility model, the embodiments of the ultra-fine endoscope 1 of the present utility model include all the technical solutions of all the embodiments of the above optical system, and the achieved technical effects are also identical, and are not described in detail herein.

Further, in an embodiment, the ultra-fine endoscope 1 further includes a housing 800, and the housing 800 is sleeved on the outer sides of the first seat 100 and the second seat 710. The outer wall of the housing 800 may be ergonomically shaped and sized, and may further incorporate features such as cleats at the localized application of force. The housing 800 may house and protect the first housing 100, the second housing 710, the imaging module 200, the illumination module 300, and the like. When the fourth channel section penetrates through the side wall of the first base 100, the casing 800 may further cover the penetrating portion, so as to realize protection of the lighting electrical connector and the like.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. An optical system, comprising:

2. The optical system of claim 1, wherein the optical system further comprises:

3. The optical system of claim 2, wherein the imaging circuit board is formed by at least one bend to form at least two circuit board segments at inferior angles to each other, the imaging circuit board being rotatably adjustable within the first mounting channel.

4. The optical system of claim 1, wherein the optical system further comprises:

5. The optical system of any one of claims 1 to 4, further comprising a connection base connected to a front end of the first base body, the connection base being provided with a routing channel comprising a main channel section and first and second branch channel sections respectively communicating with a rear end of the main channel section;

6. The optical system of claim 5, wherein the imaging guide comprises an imaging fiber bundle section received in the main channel section, and the illumination guide comprises an illumination fiber bundle section received in the main channel section;

the optical system further includes:

7. The optical system of claim 5, wherein the connector block comprises:

8. The optical system of claim 2, wherein the optical system further comprises:

9. The optical system of claim 8, further comprising an electrical connector coupled to the main control circuit board, the electrical connector including a connection portion exposed outside of at least the second housing.

10. An ultra-fine endoscope comprising the optical system according to any one of claims 1 to 9.