Endoscope imaging assembly and assembly method, endoscope front end assembly and endoscope

Abstract

The present application relates to the technical field of endoscopes, and the present application discloses an endoscope imaging component and an assembly method, an endoscope front end component and an endoscope. The endoscope imaging component includes: an image sensor, a boss is provided at the top of the image sensor; a lens component, a groove is provided at the bottom of the lens component, and the inner peripheral wall of the groove contacts the outer peripheral wall of the boss to form a radial seal; a raised portion, the bottom end of the raised portion is axially abutted against the top of the image sensor, and the inner side wall of the raised portion includes an inclined surface facing the image sensor side; an adhesive, the adhesive is circumferentially arranged on the periphery of the boss, at least bonding the top of the image sensor, the inner side wall of the raised portion, the outer peripheral wall of the boss and the bottom of the lens component; wherein, during the axial docking process between the top of the image sensor and the bottom of the lens component, the inclined surface can push the adhesive on its moving path toward the outer peripheral wall of the boss. In the embodiment of the present application, by setting the inclined surface and the boss, the colloid is evenly distributed during bonding, and loose connection of the imaging component is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of endoscopes, and in particular to an endoscope imaging component and an assembly method, an endoscope front end component and an endoscope. Background Art

[0002] Endoscopes are used to image the inside of a patient's body or industrial machinery, and are widely used in the medical and industrial fields. When using an endoscope, it is often necessary to insert it into the patient's body for operation. Therefore, in order to better meet the needs of users, it is necessary to ensure that the endoscope has better imaging quality.

[0003] In the related art, the imaging components of the endoscope are bonded together by gluing. However, due to the small size of the imaging components of the endoscope, it is difficult for ordinary glue injection equipment to accurately and evenly attach the adhesive to the corresponding position with an appropriate dosage, making it difficult to quantify the bonding thickness and bonding position, that is, the glue injection accuracy is difficult to control, and often results in uneven distribution of adhesive at each bonding position. Summary of the invention

[0004] The present application provides an endoscope imaging component and an assembly method, an endoscope front end component and an endoscope. One of its purposes is to solve the problem that when assembling the imaging components at the front end of the endoscope, the glue injection accuracy is difficult to control, resulting in loose bonding between the imaging components, or the adhesive overflows in some positions and encroaches on the light transmission path.

[0005] In a first aspect, an embodiment of the present application provides an endoscope imaging assembly, characterized in that it includes: an image sensor, a boss is provided at the top of the image sensor; a lens assembly, a groove is provided at the bottom of the lens assembly, and the inner circumferential wall of the groove contacts the outer circumferential wall of the boss to form a radial seal; a raised portion, the raised portion is circumferentially arranged at the bottom end of the lens assembly, the bottom end of the raised portion is axially abutted against the top end of the image sensor, and the inner side wall of the raised portion includes a slope facing the image sensor side; an adhesive, the adhesive is circumferentially arranged on the periphery of the boss, at least bonding the top end of the image sensor, the inner side wall of the raised portion, the outer circumferential wall of the boss and the bottom end of the lens assembly; wherein, during the axial docking process between the top end of the image sensor and the bottom end of the lens assembly, the slope can push the adhesive in its moving path toward the outer circumferential wall of the boss.

[0006] In some embodiments of the present application, the boss is a light-transmitting member.

[0007] In some embodiments of the present application, the protrusion includes a plurality of protrusion segments sequentially distributed along the circumference of the lens assembly.

[0008] In some embodiments of the present application, the multiple raised segments are closed into a ring along the circumference of the bottom end of the lens assembly, or the cross-section of the boss is rectangular, and gaps that penetrate inside and outside are formed between adjacent raised segments at the corners corresponding to the boss.

[0009] In some embodiments of the present application, the raised section is provided with a glue overflow hole that penetrates inside and outside, and the raised section is provided with one or a plurality of glue overflow holes that are sequentially arranged along the circumference of the lens assembly.

[0010] In some embodiments of the present application, at least a portion of the outer wall of the raised portion is recessed relative to the outer peripheral wall of the lens assembly and / or the image sensor, and together with the bottom end of the lens assembly and the top end of the image sensor, forms a glue storage groove, and the glue storage groove is connected to the glue overflow hole.

[0011] In some embodiments of the present application, the volume of the adhesive is greater than the volume of the filling space, and the filling space is the space between the top of the image sensor and the bottom of the lens assembly, including the space enclosed by the inner side wall of the protrusion and the outer peripheral wall of the boss.

[0012] In a second aspect, an embodiment of the present application provides an assembly method for an endoscope imaging component, the endoscope imaging component comprising: an image sensor, the top of the image sensor being provided with a boss; a lens component, the bottom of the lens component being provided with a groove; a raised portion, the raised portion being circumferentially provided at the bottom of the lens component, the inner side wall of the raised portion comprising an inclined surface; an adhesive; the method comprising the following steps: applying the adhesive circumferentially to the top of the image sensor and / or the bottom of the lens component at the periphery of the boss; aligning the central axis of the lens component with the central axis of the image sensor; applying the adhesive along the central axis of the lens component The lens assembly and / or the image sensor are moved along the axis so that the lens assembly is sleeved on the boss, and the inner circumferential wall of the lens assembly contacts the outer circumferential wall of the boss to form a radial seal; after the radial seal is formed, the lens assembly and / or the image sensor are continued to be moved along the central axis so that the inclined surface on the inner side of the protrusion pushes the adhesive on its moving path inward, so that the top of the image sensor, the inner side wall of the protrusion, the outer circumferential wall of the boss and the bottom of the lens assembly are connected by the adhesive until the bottom end of the protrusion axially abuts against the top of the image sensor; and the adhesive is cured.

[0013] In a third aspect, an embodiment of the present application provides an endoscope front end component, characterized in that it includes the aforementioned endoscope imaging component.

[0014] In a fourth aspect, an embodiment of the present application provides an endoscope, characterized in that it includes the aforementioned endoscope front end assembly.

[0015] The beneficial effects of the present invention are:

[0016] In an embodiment of the present application, a protrusion is provided at the bottom end of the lens assembly, and a slope is provided on the inner side wall of the protrusion. When the lens assembly is docked with the image sensor, the slope can be used to apply radial force to the adhesive to squeeze the adhesive inward, so that the adhesive can be more fully filled into the space enclosed by the bottom of the lens assembly, the top of the image sensor, the outer peripheral surface of the boss and the inner side wall of the protrusion, so that the adhesive is more evenly distributed in the enclosed space, thereby making the connection between the lens assembly and the image sensor more secure, and reducing the influence of the adhesive coating position deviation on the bonding effect of the imaging assembly.

[0017] In addition, a groove is provided at the bottom end of the lens assembly, and a boss is provided at the top end of the image sensor, and a radial seal is formed by the cooperation between the aforementioned groove and the boss. Since the height of the boss is higher than the height of the protrusion, the adhesive can be prevented from being squeezed into the image sensor or the interior of the lens assembly, thereby encroaching on the light transmission path and deteriorating the imaging quality of the imaging assembly. Furthermore, a radial seal is formed between the peripheral walls of the groove and the boss, which can improve the coaxiality between the image sensor and the lens assembly when the two are docked, thereby avoiding insufficient squeezing of the adhesive due to the low coaxiality of the two during the docking process, thereby causing the loose connection between the imaging components and the problem of the aforementioned adhesive encroaching on the light transmission path. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0019] In the attached picture:

[0020] Figure 1 A schematic diagram of the matching structure of the lens assembly and the image sensor disclosed in some embodiments of the present application;

[0021] Figure 2 A schematic diagram of the structure of an image sensor disclosed in some embodiments of the present application;

[0022] Figure 3 A schematic diagram of the structure of a lens assembly disclosed in some embodiments of the present application;

[0023] Figure 4 A schematic diagram of the matching structure of the protrusion and the boss disclosed in some embodiments of the present application is shown;

[0024] Figure 5 A schematic diagram showing bonding of a lens assembly and an image sensor disclosed in some embodiments of the present application;

[0025] Figure 6It is another structural schematic diagram of the lens assembly disclosed in some embodiments of the present application;

[0026] Figure 7 An exemplary flow chart of a method for assembling an endoscopic imaging assembly disclosed for some embodiments of the present application.

[0027] Description of reference numerals:

[0028] 1-lens assembly, 2-image sensor, 3-raised portion, 4-boss, 5-inclined surface, 6-overflow hole, 7-adhesive, 8-groove, 9-guide groove, 10-notch. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0030] In order to facilitate understanding of the embodiments of the present application, the relevant technologies are first introduced in conjunction with application scenarios.

[0031] An endoscope is a medical device used to be inserted into the human body to observe the lesion. An imaging component is installed at the front end of the insertion part that is inserted into the human body to observe the lesion.

[0032] In the related art, the imaging component often includes an image sensor and a lens component, which are used together by bonding. However, due to the small size of the front end of the endoscope insertion part, it is difficult to control the glue injection accuracy when bonding the imaging components, resulting in uneven distribution of the adhesive between the imaging components and loose connection of the imaging components. In addition, since the adhesive needs to be squeezed when the imaging components are connected, too much adhesive injected in some positions will cause the adhesive to overflow inward, occupy the light transmission path, and affect the imaging quality of the imaging component.

[0033] In view of this, some embodiments of the present application provide an endoscope imaging assembly and an assembly method, an endoscope front end assembly and an endoscope, as follows Figure 1-Figure 7 The technical solutions disclosed in each embodiment of the present application are described in detail.

[0034] like Figure 1-Figure 7 As shown, the endoscope imaging assembly disclosed in this specification includes a lens assembly 1, an image sensor 2, a protrusion 3, and an adhesive 7.

[0035] In some embodiments, Figure 3 As shown, the bottom end of the lens assembly 1 is provided with a groove 8, as shown in FIG. Figure 2 As shown, a boss 4 protruding axially is provided at the top of the image sensor 2. When the lens assembly 1 is docked with the image sensor 2, the axial height of the protrusion 3 is lower than the axial height of the boss 4, and the inner circumferential wall of the groove 8 forms a radial seal with the outer circumferential wall of the boss 4 in the image sensor 2.

[0036] In some embodiments, the groove 8 and the boss 4 can be in various shapes, such as rectangular, circular, etc., and the sizes of the groove 8 and the boss 4 can be set as needed.

[0037] In some embodiments, the groove 8 can be located at the bottom of the lens assembly 1, at any position that maintains a certain radial gap with the outer peripheral wall of the lens assembly 1, and the corresponding boss 4 can also be set at the top of the image sensor 2, at any position that maintains a certain radial gap with the outer peripheral wall of the image sensor 2. Specifically, in the implementation process, in order to make the connection between the image sensor 2 and the lens assembly 1 more stable and firm, the groove 8 and the boss 4 can be set at the middle position between the bottom of the lens assembly 1 and the top of the image sensor 2, and the middle position is the position centered on the optical axis, so that the forces in all directions during the docking process between the lens assembly 1 and the image sensor 2 can be more balanced, and the filling degree of the adhesive 7 can be more consistent, which can maximize the stability of the bonding part.

[0038] In some embodiments, the boss 4 of the image sensor 2 may be integrally formed with the image sensor 2, or the boss 4 may be a light-transmitting member. The light-transmitting member may be a matching component of the image sensor 2, such as a filter, etc. In other embodiments, the light-transmitting member may be connected to the image sensor 2 in a variety of ways, such as by gluing.

[0039] In some embodiments, Figure 3 As shown, a protrusion 3 is circumferentially provided at the bottom end of the lens assembly 1 , and an inner side wall of the protrusion 3 includes a slope 5 .

[0040] In some embodiments, the protrusion 3 and the lens assembly 1 can be connected in various ways, for example, by gluing.

[0041] In some embodiments, the inner side wall of the protrusion 3 may be entirely an inclined surface 5 , or part of the inner side wall may be an inclined surface 5 , and the inclined surface 5 is inclined toward the side where the image sensor 2 is located.

[0042] In some embodiments, the inclined surfaces 5 of the inner side wall of the protrusion 3 may have the same inclination angle, or the inner side wall of the protrusion 3 may include a plurality of inclined surfaces 5 with different inclination angles.

[0043] In some embodiments, the inclination angle of the inclined surface 5 is between 0° and 90°. In the specific implementation process, in order to ensure a better force application effect, the inclination angle of the inclined surface 5 can be 30° to 50°.

[0044] like Figure 5 As shown, when the top of the image sensor 2 is axially butted against the bottom of the lens assembly 1, the inclined surface 5 can push the adhesive 7 on its moving path toward the outer peripheral wall of the boss 4, so that the adhesive 7 moves inward. When the bottom end of the protrusion 3 is axially butted against the top of the image sensor 2, the inclined surface 5 stops pushing the adhesive 7, and the shape of the adhesive 7 is basically fixed. As long as the filling amount (volume) of the adhesive 7 is appropriate, the adhesive 7 will bond the top of the image sensor 2, the bottom of the lens assembly 1, the inner wall of the protrusion 3, and the outer peripheral wall of the boss 4 at this time.

[0045] In some embodiments, the adhesive 7 is a colloid with a certain viscosity. Specifically, the adhesive 7 can be a photosensitive adhesive, a hot melt adhesive, etc.

[0046] In the embodiment of the present application, the adhesive 7 provides bonding force on four surfaces to further expand the bonding area, and the inclined surface 5 of the inner wall of the raised portion 3 can apply an inward force to the adhesive 7, so that the adhesive 7 can be evenly diffused inward, preventing the adhesive 7 from overflowing, resulting in the filling space being unable to be completely filled, and reducing the bonding strength between the imaging components. At the same time, since the filling space is connected in all directions, when the adhesive 7 is filled too much on one side or too little on one side, the adhesive 7 can move adaptively in the circumferential space, so that the adhesive 7 can be filled in the filling space as much as possible, forming an integral connection in multiple directions such as radial, axial, and circumferential, avoiding the problem of uneven application of the adhesive 7 resulting in loose connection of the imaging components, and improving the bonding effect of the adhesive 7. In addition, by providing a groove 8 at the bottom end of the lens assembly 1 and a boss 4 at the top end of the image sensor 2, when the lens assembly 1 is docked with the image sensor 2, the groove 8 and the boss 4 form a radial seal, squeezing the adhesive 7 into the filling space, effectively solving the problem of the adhesive 7 overflowing inward and encroaching on the optical fiber transmission path, avoiding the degradation of imaging quality and affecting the normal use of the endoscope.

[0047] In some embodiments, the raised portion 3 includes a plurality of raised segments sequentially distributed along the circumference of the lens assembly 1. The plurality of raised segments can be arranged in a variety of ways. For example, the plurality of raised segments can be arranged at intervals at the bottom end of the lens assembly 1.

[0048] In some embodiments, the raised segments may be integrally formed, or a plurality of raised segments may be glued together.

[0049] In some embodiments, Figure 4 As shown, a plurality of raised segments can be closed into a ring along the circumference of the bottom end of the lens assembly 1 .

[0050] In some embodiments, Figure 3As shown, when the boss 4 is rectangular in shape, a notch 10 penetrating from inside to outside is formed between two adjacent convex sections at the corners of the corresponding boss 4 .

[0051] By retaining the notch 10 at the corner position of the boss 4, the filling space of the adhesive 7 can be further expanded, and the adhesive 7 can be connected as a whole in the circumferential direction, thereby greatly improving the adhesion of the adhesive 7. In addition, since the corner is farther away from the center position of the image sensor 2 and the lens assembly 1, the adhesive 7 here is difficult to be squeezed to the middle position, which will not cause the problem of the adhesive 7 occupying the optical fiber transmission path.

[0052] In some embodiments, Figure 3 , Figure 4 As shown, the convex section is provided with a glue overflow hole 6 which is connected inside and outside. In some embodiments, there may be one or more glue overflow holes 6.

[0053] In some embodiments, the overflow holes 6 can be set at any position of the raised section along the circumferential direction. Exemplarily, the overflow holes 6 can be set at intervals on the raised section. Exemplarily, the overflow holes 6 can be set at the lower part of the raised section, or at the upper part of the raised section. It should be noted that in order to ensure that the adhesive 7 can be fully filled in the filling space, the overflow holes 6 can be set at the upper part of the raised section to prevent the adhesive 7 from overflowing from the lower part, resulting in the problem of loss of the adhesive 7 in the filling space.

[0054] It should be noted that the upper portion refers to the side close to the lens assembly 1 , and the lower portion refers to the side close to the image sensor 2 .

[0055] In some embodiments, the inner side wall of the glue overflow hole 6 can be in various states. For example, the inner side wall of the glue overflow hole 6 can be a plane, an inclined surface, or uneven.

[0056] By setting the overflow hole 6, when too much adhesive 7 is applied, the overflow hole 6 provides a discharge channel for the excess adhesive 7, so that the excess adhesive 7 in the filling space can be discharged to prevent the adhesive 7 from overflowing inward and encroaching on the light transmission path. At the same time, it can also reduce the docking force between the two to avoid damage caused by excessive force during the docking process. Furthermore, by setting the overflow hole 6, the bonding area of ​​the adhesive 7 can be increased, so that the image sensor 2 and the lens assembly 1 can be bonded more tightly and firmly.

[0057] In some embodiments, at least a portion of the outer wall of the protrusion 3 is recessed relative to the outer peripheral wall of the lens assembly 1 and / or the image sensor 2, and together with the bottom end of the lens assembly 1 and the top end of the image sensor 2 forms a glue storage groove (not shown in the figure), and the glue storage groove is connected to the glue overflow hole 6.

[0058] The outer wall of the raised portion 3, the bottom end of the lens assembly 1 and the top end of the image sensor 2 together form a glue storage groove, and the adhesive 7 overflowing from the overflow hole 6 is further distributed in a circumferential manner on the outside of the raised portion 3, thereby strengthening the adhesion from the outside, so that a tensile force is formed between the image sensor 2 and the outside of the lens assembly 1, thereby improving the connection stability of the imaging assembly.

[0059] In some embodiments, the volume of the adhesive 7 is greater than the volume of the filling space, which is the space between the top of the image sensor 2 and the bottom of the lens assembly 1 and is surrounded by the inner wall of the protrusion 3 and the outer wall of the boss 4 .

[0060] In some embodiments, the volume of the adhesive 7 may be greater than or equal to the sum of the volume of the filling space, the volume of the glue overflow hole 6 and the volume of the glue storage groove.

[0061] Increasing the volume of the adhesive 7 can further strengthen the bonding force between the imaging components, ensure the stability of the bonding, and guarantee a firm connection between the imaging components.

[0062] Figure 7 An exemplary flow chart of a method for assembling an endoscopic imaging assembly disclosed for some embodiments of the present application.

[0063] like Figure 7 As shown, the method for assembling the endoscope imaging component includes:

[0064] Step 710 , applying adhesive 7 on the top end of the image sensor 2 and / or the bottom end of the lens assembly 1 .

[0065] In some embodiments, the adhesive 7 can be applied in a variety of ways. For example, the adhesive 7 can be applied along the circumference of the boss 4 at the bottom of the image sensor 2 ; the adhesive 7 can also be applied to the inner side wall of the raised portion 3 at the bottom of the lens assembly 1 .

[0066] Step 720 , aligning the central axis of the lens assembly 1 with the central axis of the image sensor 2 .

[0067] In some embodiments, the central axes of the lens assembly 1 and the image sensor 2 assembly can be aligned in a variety of ways. For example, by workers in the field aligning them based on their appearance. For another example, the lens assembly 1 or the image sensor 2 can be moved so that the inner wall of the groove 8 contacts the outer peripheral wall of the boss 4, and the alignment is performed through the circumferential restriction between the inner wall of the groove 8 and the outer peripheral wall of the boss 4.

[0068] In some embodiments, Figure 6As shown, when the lens assembly 1 and the image sensor 2 are docked by negative pressure suction, a guide groove 9 can be provided at the circumferential chamfered surface of the groove 8 of the lens assembly 1. When the central axes of the lens assembly 1 and the image sensor 2 are aligned, the guide groove 9 can provide radial and axial forces to straighten the lens assembly 1 and the image sensor 2, further improve the docking efficiency of the two, and reduce the difficulty of docking.

[0069] Step 730, move the lens assembly 1 and / or the image sensor 2 along the central axis so that the groove 8 of the lens assembly 1 is sleeved on the boss 4, and the inner circumferential wall of the lens assembly 1 contacts the outer circumferential wall of the boss 4 to form a radial seal.

[0070] Step 740, after the radial seal is formed, continue to move the lens assembly 1 and / or the image sensor 2 along the central axis so that the inclined surface 5 on the inner side of the protrusion 3 pushes the adhesive 7 on its moving path inward, so that the top of the image sensor 2, the inner wall of the protrusion 3, the outer peripheral wall of the boss 4 and the bottom of the lens assembly 1 are connected by the adhesive 7 until the bottom end of the protrusion 3 axially abuts against the top of the image sensor 2.

[0071] In some embodiments, Figure 5 As shown, when the lens assembly 1 is in contact with the image sensor 2, the protrusion 3 formed at the bottom of the lens assembly 1 contacts the top of the image sensor 2, and at the same time, the protrusion 3 adheres to the top surface of the image sensor 2, and the protrusion 3 is embedded in the adhesive 7. At this time, the adhesive 7 fills the inside, and after filling the filling space, the adhesive 7 will overflow outward through the overflow hole 6. Finally, the excess adhesive 7 can be filled into the overflow hole 6 and the glue storage groove, and the lens assembly 1 and the image sensor 2 are limited from the circumferential direction, further stabilizing the connection between the two and improving the bonding stability.

[0072] Step 750 , curing the adhesive 7 .

[0073] In some embodiments, the adhesive 7 can be cured in a variety of ways. For example, when the adhesive 7 is a photosensitive adhesive, it can be cured by ultraviolet irradiation. For another example, the bonded imaging assembly can be placed in a cool and dry place to wait for the adhesive 7 to cure itself.

[0074] Through the above-mentioned endoscope imaging component assembly method, the adhesive 7 can be pushed inward through the inclined surface 5 of the inner wall of the raised portion 3 to prevent the adhesive 7 from overflowing and affecting the connection stability between the imaging components. At the same time, with the help of the radial seal between the groove 8 and the boss 4, the adhesive 7 can be prevented from overflowing, so that the adhesive 7 is confined in the filling space, the bonding effect of the adhesive 7 is guaranteed, and the uneven dispersion of the adhesive 7 causes the imaging component to be loosely connected. Furthermore, through the cooperation between the boss 4 and the groove 8, the coaxiality between the image sensor 2 and the lens assembly 1 during the docking process can be strengthened, the alignment process required can be reduced, and the cost consumption of the assembly process can be saved. In addition, improving the coaxiality can also make the adhesive 7 more evenly distributed in the filling space during the docking process, avoiding the problem of uneven squeezing of the adhesive 7 due to low coaxiality, which in turn causes a loose connection between the imaging components.

[0075] An embodiment of the present application provides an endoscope front end component, characterized in that it includes the aforementioned endoscope imaging component.

[0076] An embodiment of the present application provides an endoscope, characterized in that it includes the aforementioned endoscope front end assembly.

[0077] The endoscope involved in the embodiments of the present application may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiments of the present application do not impose any specific restrictions on the type of endoscope.

[0078] The above embodiments of the present application focus on describing the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0079] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An endoscope imaging assembly, characterized in that: include: An image sensor (2), wherein a boss (4) is provided at the top of the image sensor (2); A lens assembly (1), wherein a groove (8) is provided at the bottom end of the lens assembly (1), and an inner peripheral wall of the groove (8) contacts an outer peripheral wall of the boss (4) to form a radial seal; A raised portion (3), the raised portion (3) being arranged at the bottom end of the lens assembly (1) along the circumferential direction, the bottom end of the raised portion (3) being axially abutted against the top end of the image sensor (2), and the inner side wall of the raised portion (3) comprising an inclined surface (5) facing a side of the image sensor (2); An adhesive (7), the adhesive (7) being arranged along the circumferential direction on the periphery of the boss (4), and bonding at least the top of the image sensor (2), the inner side wall of the raised portion (3), the outer peripheral wall of the boss (4) and the bottom end of the lens assembly (1); Wherein, during the process of axially docking the top end of the image sensor (2) and the bottom end of the lens assembly (1), the inclined surface (5) can push the adhesive (7) located on its moving path toward the outer peripheral wall of the boss (4).

2. The endoscopic imaging assembly according to claim 1, characterized in that: The boss (4) is a light-transmitting component.

3. The endoscopic imaging assembly according to claim 1, characterized in that: The raised portion (3) comprises a plurality of raised segments distributed in sequence along the circumference of the lens assembly (1).

4. The endoscopic imaging assembly according to claim 3, characterized in that: The plurality of raised segments are closed into a ring along the circumference of the bottom end of the lens assembly (1); Alternatively, the cross section of the boss (4) is rectangular, and a notch (10) that penetrates inside and outside is formed between adjacent boss segments at the corners corresponding to the boss (4).

5. The endoscopic imaging assembly according to claim 3, characterized in that: The convex section is provided with a glue overflow hole (6) which is connected inside and outside, and the convex section is provided with one or a plurality of glue overflow holes (6) which are sequentially arranged along the circumference of the lens assembly (1).

6. The endoscopic imaging assembly according to claim 5, characterized in that: At least a portion of the outer wall of the protruding portion (3) is recessed relative to the outer peripheral wall of the lens assembly (1) and / or the image sensor (2), and together with the bottom end of the lens assembly (1) and the top end of the image sensor (2), forms a glue storage groove, and the glue storage groove is connected to the glue overflow hole (6).

7. The endoscopic imaging assembly according to claim 1, characterized in that: The volume of the adhesive (7) is greater than the volume of the filling space, and the filling space is the space between the top end of the image sensor (2) and the bottom end of the lens assembly (1), including the space enclosed by the inner side wall of the raised portion (3) and the outer peripheral wall of the boss (4).

8. A method for assembling an endoscope imaging assembly, characterized in that: The endoscope imaging assembly comprises: an image sensor (2), the top end of the image sensor (2) being provided with a boss (4); a lens assembly (1), the bottom end of the lens assembly (1) being provided with a groove (8); a raised portion (3), the raised portion (3) being circumferentially arranged at the bottom end of the lens assembly (1), the inner side wall of the raised portion (3) comprising an inclined surface (5); and an adhesive (7); the method comprises the following steps: Applying the adhesive (7) circumferentially to the top end of the image sensor (2) and / or the bottom end of the lens assembly (1) at the periphery of the boss (4); Aligning the central axis of the lens assembly (1) with the central axis of the image sensor (2); Moving the lens assembly (1) and / or the image sensor (2) along the central axis so that the lens assembly (1) is sleeved on the boss (4) and the inner peripheral wall of the lens assembly (1) contacts the outer peripheral wall of the boss (4) to form a radial seal; After the radial seal is formed, the lens assembly (1) and / or the image sensor (2) are continuously moved along the central axis, so that the inclined surface (5) on the inner side of the protruding portion (3) pushes the adhesive (7) on its moving path inward, so that the top end of the image sensor (2), the inner side wall of the protruding portion (3), the outer peripheral wall of the boss (4) and the bottom end of the lens assembly (1) are connected through the adhesive (7) until the bottom end of the protruding portion (3) axially abuts against the top end of the image sensor (2); The adhesive (7) is cured.

9. An endoscope front end assembly, characterized in that: The invention comprises an endoscopic imaging assembly as described in any one of claims 1 to 7.

10. An endoscope, characterized in that: Includes the endoscope front end assembly as described in claim 9.

Images