Endoscope module and endoscope

Abstract

The endoscope module comprises a lens assembly, a lens outer cover, a light shield, a light source and a module line, the lens assembly and the light source are both contained in the lens outer cover and are both electrically connected with the module line, and the installation position of the lens outer cover and the lens assembly is wrapped with the light shield; the light shield is made of metal foil. According to the endoscope module and the endoscope, the light-proof performance of the metal foil is utilized, the metal foil is used as the light shield to shield light, black glue blocking and light shielding are replaced, part of metal has high ductility, and the thickness of the metal foil is far smaller than that of black glue, so that the small size of the head end of the endoscope is guaranteed, and the service life of the endoscope is prolonged. And due to the light-proof and light-reflecting characteristics of the metal foil, the shading property of the metal foil is far superior to that of black glue under the same thickness.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an endoscope module and an endoscope. Background Art

[0002] Endoscopes are widely used in industrial and medical detection fields, especially in the medical industry for detection and treatment.

[0003] In view of the small structural space at the head end of the electronic endoscope and the large number of components (such as camera module, clamp channel tube, lighting system, etc.), the use of a small-sized camera module and increasing the size of the clamp channel tube can better meet the development needs of endoscopes.

[0004] At present, the end of the endoscope lens is usually packaged in an integrated glue-filled form. The direction of the illumination light is affected by the transparent sealing glue, which guides the light to the side and back of the endoscope lens while emitting light forward. The miniaturization of the camera module leads to the problem of thin wall thickness of the packaging shell and weak light shielding ability. Strong light appears in the endoscope lens end, which will cause light to enter the image sensor from the weak point of the endoscope package, causing stray light interference and affecting image quality. There is currently a solution to shield light by coating with glue, but this solution requires a thicker layer of opaque glue to achieve the shading effect, which is not conducive to reducing the size of the endoscope lens end. Utility Model Content

[0005] The main technical problem solved by the utility model is to provide an endoscope module and an endoscope, using metal foil as a light shield to avoid the above defects.

[0006] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide an endoscope module, the endoscope module includes a lens assembly, a lens cover, a light shield, a light source and a module line, the lens assembly and the light source are both accommodated in the lens cover and are electrically connected to the module line, and the light shield is wrapped around the installation position of the lens cover and the lens assembly;

[0007] The light shield is a metal foil.

[0008] The lens cover comprises a shell located at a distal end and a mounting seat located at a proximal end; the shell and the mounting seat are both hollow inside, and the lens assembly is accommodated in the mounting seat.

[0009] Wherein, the shape of the shell is a hollow cylinder;

[0010] The mounting seat has a plurality of side walls, and the plurality of side walls surround and form a receiving cavity, and a clearance groove is provided at the proximal ends of two adjacent side walls.

[0011] The light shield is an enclosure formed by wrapping a plurality of surfaces with openings at both ends, and the shape of the enclosure is the same as the shape of the mounting seat.

[0012] The lens assembly includes an image sensor, a filter lens, a lens and an end-face light-transmitting mirror, and the filter lens, the lens and the end-face light-transmitting mirror are arranged in sequence from near to far from the image sensor.

[0013] The image sensor is in the shape of a quadrilateral, and the four corners of the image sensor are respectively located in the corresponding air-avoiding grooves.

[0014] Wherein, the light source is a plurality of LED lamp beads.

[0015] Wherein, the endoscope module also includes a PCB adapter board, the PCB adapter board is located between the lens assembly and the module line, and the lens assembly is electrically connected to the PCB adapter board.

[0016] The module line end forms a packaging end, and the distal end of the packaging end forms a mounting surface for supporting the PCB adapter board; the proximal end of the light shield is bonded to the side of the packaging end.

[0017] In order to solve the technical problem, the utility model also provides an endoscope, which includes an endoscope module as described in any one of the above items.

[0018] Compared with the prior art, the beneficial effects achieved by the endoscope module and the endoscope of the utility model are as follows: the opacity of the metal foil is utilized to use the metal foil as a light shield to block light, replacing the black glue sealing and blocking light. Since some metals have high ductility, the thickness of the metal foil is much smaller than the black glue, thereby ensuring the smaller size of the endoscope head end. Moreover, due to the light-opaque and reflective properties of the metal foil itself, its light-blocking property is much better than that of the black glue at the same thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the exploded structure of the endoscope module of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the lens cover;

[0022] Figure 3 It is a schematic diagram of the installation of the lens assembly and the lens cover;

[0023] Figure 4 It is a schematic diagram of the structure of the endoscope module before the light shield is installed;

[0024] Figure 5 It is a schematic diagram of the structure of the endoscope module after the light shielding cover is installed. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the utility model embodiment, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "first", "second", etc. in this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0027] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] See also Figures 1 to 5 , Figure 1It is a schematic diagram of the endoscope module of the utility model, which includes a lens assembly 1, a lens cover 2, a light shield 3, a light source 4 and a module line 5. The lens assembly 1 is used to photograph and observe the internal tissues of the human body on the endoscope. The lens cover 2 is arranged outside the lens assembly 1, and is used to accommodate, carry and protect the lens assembly 1. The light source 4 is used to provide lighting. The lens assembly 1 and the light source 4 are both accommodated in the lens cover 2 and are electrically connected to the module line 5. The light shield 3 is wrapped around the installation place of the lens cover 2 and the lens assembly 1, and is used to block the light leaking from the side and rear of the lens cover 2.

[0029] The light shield 3 in the present application is a metal foil. The metal is opaque because the free electrons in the metal can move freely. When light shines on the metal surface, the electrons will be excited by the electromagnetic field of the light. Since the electron density in the metal is very high, they will interact with the excited electromagnetic waves and re-radiate light of the same or similar frequency, which causes the light to be reflected without passing through the metal. Since epoxy black glue is made by adding carbon powder particles to epoxy colloid to achieve the light shielding effect, the carbon powder particle size and filling density are far less than metal atoms, so epoxy black glue is far inferior to metal foil in terms of light shielding.

[0030] The material of the metal foil may be common metals, such as iron, copper, aluminum, etc., or may be common alloys.

[0031] Preferably, the thickness of the metal foil used in the sunshade 3 is in the range of 0.15-0.30 mm, which occupies a much smaller volume than the current use of adhesive sealing. Figure 4 and Figure 5 Since the metal foil is very thin, the volume added after installing the light shield 3 is very small, so the volume occupied by the endoscope module is minimized, and the external dimensions of the endoscope module are reduced to achieve the effect of miniaturization and lightness.

[0032] The endoscope module of the present application uses metal foil for shading, which not only has a good shading effect, but also achieves the technical effect of minimizing the overall volume.

[0033] See also Figure 2 and Figure 3 In the present application, the lens housing 2 includes a housing 21 at the distal end and a mounting seat 22 at the proximal end. For ease of understanding, the distal end in the present application is the end close to the patient's lesion, and the proximal end is the end for the operator of the endoscope. The housing 21 and the mounting seat 22 are both hollow inside, and the lens assembly 1 is accommodated in the mounting seat 22. The housing 21 is in the shape of a hollow cylinder, and the mounting seat 22 has a plurality of side walls 221, which surround and form an accommodating cavity 222. The lens assembly 1 and the light source 4 are both accommodated in the accommodating cavity 222. The proximal ends of the two adjacent side walls 221 are provided with an air avoidance groove 223, which is used to form an air avoidance position when the lens assembly 1 is installed.

[0034] In one embodiment, the mounting seat 22 may be a quadrilateral or a hexagon, that is, it has four or six side walls 221, with rounded corners between adjacent side walls 221, and the near end is hollowed out to form a void-avoiding groove 223, forming a four-claw or six-claw structure as a whole. The side wall 221 abuts against the lens assembly 1 for mounting the lens assembly 1, and the void-avoiding groove 223 avoids the corners of the lens assembly 1, which is not only easy to install but also avoids collision between the two during use.

[0035] In the present application, the shading hood 3 is an enclosure with openings at both ends formed by wrapping multiple surfaces, and the shape of the enclosure is the same as the shape of the mounting seat 22 to facilitate the fitting of the mounting seat 22, which can not only achieve a better shading effect, but also minimize the volume of the endoscope module.

[0036] Preferably, the light shield 3 and the mounting seat 22 are bonded together, and adhesive can be provided on the inner wall of the light shield 3 or adhesive can be applied on the outer side of the mounting seat 22 .

[0037] In the present application, the lens assembly 1 includes an image sensor 11, a filter lens 12, a lens 13 and an end surface light-transmitting mirror 14. The filter lens 12, the lens 13 and the end surface light-transmitting mirror 14 are arranged in sequence from near to far from the image sensor 11. A receiving groove is provided on one end surface of the image sensor 11 for accommodating the filter lens 12, the lens 13 and the end surface light-transmitting mirror 14. The whole is used to transmit the image of the internal tissue of the human body to the outside.

[0038] In the present application, the number of lenses 13 can be multiple, and in one embodiment, the number of lenses 13 is 3.

[0039] In the present application, the shape of the image sensor 11 is a quadrilateral, and the four corners of the image sensor 11 are respectively located in the corresponding air-avoiding grooves 223 .

[0040] In the present application, the light source 4 is a plurality of LED lamp beads, and the plurality of LED lamp beads are evenly arranged around the lens assembly 1 to form a balanced lighting effect.

[0041] The endoscope module in the present application also includes a PCB adapter board 6, which is located between the lens assembly 1 and the module line 5, and the lens assembly 1 is electrically connected to the PCB adapter board 6.

[0042] In the present application, the end of the module line 5 forms a packaging end 51, and the distal end of the packaging end 51 forms a mounting surface for carrying the PCB adapter board 6. Preferably, the mounting surface is a plane. The proximal end of the light shield 3 is bonded to the side of the packaging end 51, and the distal end is bonded to the mounting seat 22 of the lens cover 2, so that the connection between the lens cover 2 and the lens assembly 1 is completely covered by the light shield 3 to prevent light leakage.

[0043] In order to solve the technical problem, the utility model also provides an endoscope, which includes the endoscope module mentioned above.

[0044] By using the endoscope module and endoscope of the utility model, the metal foil is used as a light shield to block light by utilizing its opacity, thereby replacing the black glue blocking and blocking light. Since some metals have high ductility, the thickness of the metal foil is much smaller than that of the black glue, thereby ensuring a smaller size of the endoscope head end. Moreover, due to the light-opaque and reflective properties of the metal foil itself, its light-blocking property is much better than that of the black glue at the same thickness.

[0045] The above description is only an implementation method of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present utility model.

Claims

1. An endoscope module, characterized in that: The endoscope module comprises a lens assembly, a lens cover, a light shield, a light source and a module line. The lens assembly and the light source are both accommodated in the lens cover and are electrically connected to the module line. The light shield is wrapped around the installation position of the lens cover and the lens assembly. The light shield is a metal foil.

2. The endoscope module according to claim 1, characterized in that: The lens housing comprises a shell located at a distal end and a mounting seat located at a proximal end. The shell and the mounting seat are both hollow inside, and the lens assembly is accommodated in the mounting seat.

3. The endoscope module according to claim 2, characterized in that: The shape of the shell is a hollow cylinder; The mounting seat has a plurality of side walls, and the plurality of side walls surround and form a receiving cavity, and a clearance groove is provided at the proximal ends of two adjacent side walls.

4. The endoscope module according to claim 3, characterized in that: The light shield is an enclosure formed by wrapping a plurality of surfaces with openings at both ends, and the shape of the enclosure is the same as that of the mounting seat.

5. The endoscope module according to claim 3 or 4, characterized in that: The lens assembly comprises an image sensor, a filter lens, a lens and an end-face light-transmitting mirror, and the filter lens, the lens and the end-face light-transmitting mirror are arranged in sequence from near to far from the image sensor.

6. The endoscope module according to claim 5, characterized in that: The image sensor is in the shape of a quadrilateral, and the four corners of the image sensor are respectively located in the corresponding air-avoiding grooves.

7. The endoscope module according to claim 1, characterized in that: The light source is a plurality of LED lamp beads.

8. The endoscope module according to claim 1, characterized in that: The endoscope module also includes a PCB adapter board, which is located between the lens assembly and the module line, and the lens assembly is electrically connected to the PCB adapter board.

9. The endoscope module according to claim 8, characterized in that: The end of the module line forms a packaging end, and the distal end of the packaging end forms a mounting surface for supporting the PCB adapter board; the proximal end of the light shield is bonded to the side of the packaging end.

10. An endoscope, characterized in that: The endoscope comprises an endoscope module according to any one of claims 1-9.

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