TWM624518U - Easy-to-assemble endoscope lens combination - Google Patents

Abstract

An endoscope lens assembly that is easy to assemble, used to be installed in a head tube of an endoscope lens, the assembly structure of the endoscope lens includes: a base with two long holes penetrating front and rear, the two long holes Each has a long axis, and the long axes of the two long holes are substantially parallel to each other, and the length of each long hole along its axial direction is greater than its radius; an imaging lens is accommodated in one of the long holes, and the taking The front end part of the imaging lens is exposed on the base; a projection lens is accommodated in the other long hole, and the front end part of the projection lens is exposed on the base, the projection lens is used for projecting a projectile, and is placed on the base. A predetermined pattern is displayed on the projection; and an adhesive is attached to the base and attached to at least one of the imaging lens and the projection lens.

Description

Easy-to-assemble endoscope lens combination

This creation is related to the component assembly technology of endoscopes, especially an endoscope lens combination that is easy to assemble.

U.S. Patent No. US15,252,685 discloses a three-dimensional endoscope for the human body. The interior of the endoscope is fixed with a plate body to take an imaging lens and a projection lens. The optical axes are all set to be parallel, so this way of fixing the two lenses with a plate body is prone to the problem that the optical axes of the two lenses are not parallel during the main assembly. A jig is required to assist the installation. However, since the endoscope is a structure with a very small internal space, whether or not a jig is used during assembly, it will increase the difficulty of assembly. In addition, such an assembly structure not only has the problem of optical axis parallelism, but also the problem of whether the imaging or projection focal lengths of the two lenses are consistent. During assembly, the optical axis parallelism and focal lengths of the two lenses must be the same. The problem. It can be seen that the structure of this US patent is very difficult to assemble.

In the US Patent No. 10,334,216 B2, Figure 8 also shows the technology of fixing two lenses with a plate body. Therefore, there is also the same case as the above-mentioned case where the optical axis parallelism and focal length of the two lenses must be taken into account at the same time. The problem is that its assembly is not convenient.

The problem encountered by the current technology is that there is currently no effective technology that can provide a convenient assembly effect for the assembly relationship between the lens and the base element in the endoscope.

The main purpose of this creation is to propose an endoscope lens assembly structure that is easy to assemble, which has the effect of easy assembly and can solve the problems encountered in the aforesaid prior art. In addition, what's more, the present invention can easily make the optical axis of the projection lens and the imaging lens substantially parallel without using a fixture, and it is extremely easy to adjust the focal length, which has the effect of being really easy to install.

In order to achieve the above purpose, an easily assembled endoscope lens assembly is used to be installed in a head tube of an endoscope. The easily assembled endoscope lens assembly includes: a base with two long holes penetrating through it. , the two long holes respectively have a long axis, which is substantially parallel to each other, and the length of each long hole along its axial direction is greater than its radius; an imaging lens is accommodated in one of the long holes, and the imaging lens The front end part of the projection lens is exposed on the base; a projection lens is accommodated in the other long hole, and the front end part of the projection lens is exposed on the base, the projection lens is used for projecting a projectile, and the projection lens is A predetermined pattern is displayed on the object; and an adhesive is attached to the base and attached to at least one of the imaging lens and the projection lens.

With the above technical features, the present invention can solve the above-mentioned problems. By using the long holes that are substantially parallel to each other on the base and the use of glue, it has the effects of easy adjustment of focus and convenient installation.

In order to explain the technical features of this creation in detail, the following preferred embodiments are given and described in conjunction with the drawings as follows, among which:

As shown in FIG. 1 to FIG. 7 , the first preferred embodiment of the present invention proposes an endoscope lens assembly 10 for easy assembly, which is used for being installed in a head tube 61 of an endoscope. The mirror-lens assembly 10 is mainly composed of a base 11 , an imaging lens 21 , a projection lens 31 , and an adhesive 41 , wherein:

Since the host of the endoscope is a well-known technology and can be directly understood by those skilled in the art, it is not allowed to show the host of the endoscope and the host of the endoscope connected to the head. status of the tube.

The base 11 has two long holes 111 running through the front and rear, the upper part in FIG. 5 represents the front end of the base 11 , the two long holes 111 respectively have a long axis, and the long axes of the two long holes 111 are substantially Parallel to each other, the length of each long hole 111 along its axial direction is greater than its radius. Wherein, the concept that the long hole 111 has a long axis can be directly understood by those with ordinary knowledge in the technical field, so it is not allowed to be represented by a diagram.

The image pickup lens 21 is accommodated in the long hole 111 by the front end of the base 11 , and the front end of the image pickup lens 21 is exposed from the base 11 .

The projection lens 31 is accommodated in the other elongated hole 111 by the front end of the base 11 , and the front end of the projection lens 31 is exposed from the base 11 . The projection lens 31 is used for projecting a projectile 71 , and A predetermined pattern 81 is displayed on the projection 71 .

The adhesive 41 is attached to the base 11 and attached to the imaging lens 21 and the projection lens 31 , so that the adhesive 41 can fix the imaging lens 21 and the projection lens 31 on the on the base 11 .

In the first embodiment, the base 11 is provided with two optical fiber fixing grooves 112 on both sides, which are respectively used for fixing an optical fiber 51 .

In the first embodiment, the glue 41 is a transparent curing glue, such as transparent resin, and the glue 41 is attached to the head tube 61 , the base 11 , the imaging lens 21 and the projection lens 31, and is located in front of the base 11, and as a protective layer, the protective layer can provide a protective effect to the base 11, that is, the two optical fibers 51, and because it is transparent, it can be used for guiding the two optical fibers 51. Light energy is emitted outward to provide lighting effects.

The structure of the first embodiment has been described above. Next, the effect that the structure of the first embodiment can achieve will be described.

As shown in FIG. 3 , since the imaging lens 21 and the projection lens 31 are both installed in the two long holes 111 of the base 11 , and the length of each long hole 111 is greater than its radius, the imaging lens After the 21 and the projection lens 31 are accommodated in each of the long holes 111, they will be constrained by the hole walls of the two long holes 111, so that the imaging lens 21 and the projection lens 31 directly appear substantially parallel to each other. In this way, the imaging lens 21 and the projection lens 31 can be installed to form the effect that the optical axes are parallel. In addition, as long as one of the imaging lens 21 and the projection lens 31 is fixed with the adhesive 41 first, and then the depth of the other in the long hole 111 is adjusted, the focal length of the two can be adjusted to be the same In this state, the adhesive 41 is used to fix it on the base 11 to complete the assembly. At this time, the optical axes of the imaging lens 21 and the projection lens 31 are parallel to each other and have the same focal length. The structures of the imaging lens 21 and the projection lens 31 are not the technical focus of the present application, so they are represented by solids in each figure.

It can be seen from the above that the present invention can indeed make the assembly more convenient for the assembler, which is more convenient and faster than the prior art, and can solve the problems encountered in the aforesaid prior art. In addition, as can be seen from the above, the present invention can easily make the optical axes of the imaging lens 21 and the projection lens 31 substantially parallel without using a jig, and it is extremely easy to adjust the focal length, which has the effect of easy installation.

It should be added that in the first embodiment (as shown in FIG. 7 and FIG. 8 ), the bottom end of the imaging lens 21 is provided with a circuit board 73 , and the bottom end of the projection lens 31 is provided with a pattern plate 72 and a projection light source 82. The light projected by the projection light source 82 can be divided into monochromatic light or white light. In the first embodiment, green light is used as an example, and the green light projected by the projection light source 82 passes through the pattern plate. 72 and then project the predetermined pattern 81 on the surface of the projecting object 71 through the projection lens 31 .

As shown in Figures 9 to 12, the present invention proposes a second embodiment of an endoscope lens assembly 10' that is easy to assemble, which is basically the same as the first embodiment disclosed above, except that:

In the second embodiment, the wall of the long hole 111 ′ for accommodating the imaging lens is provided with a thread 113 ′ in both of the two long holes 111 ′; the imaging lens 21 ′ and the projection lens 31' is substantially cylindrical, and a part of the cylindrical side surface of the projection lens 31' is provided with a thread 311', when the projection lens 31' is accommodated in the long hole 111' provided with the thread 113' , that is, the thread 311' is screwed to the thread 113', whereby the depth of the projection lens 31' in the long hole 111' provided with the thread 113' can be adjusted by rotating the projection lens 31', thereby adjusting the depth of the projection lens 31'. A focal length of the projection lens 31' achieves the effect that the focal lengths of the imaging lens 21' and the projection lens 31' are the same. After adjustment, the adhesive 41' is used to fix it on the base 11'. In this case, the projection lens 31' is provided with the thread 311' as an example to illustrate, but it does not mean that the thread 311' can only be provided on the projection lens 31', and the imaging lens 21' and the imaging lens 21' and The other elongated hole 111' is provided with threads, depending on actual needs.

In addition, in the second embodiment, a positioning plate 91 ′ is further included. The positioning plate 91 ′ is disposed in the head pipe 61 ′ and is located at the front end of the base 11 ′. The positioning plate 91 ′ has two lens holes 911 ′ and Two optical fiber fixing holes 912', the imaging lens 21' and the projection lens 31' pass through the two lens holes 911' and partially exposed at the front end of the positioning plate 91', the two optical fiber fixing holes 912' are used for The two optical fibers 51' are accommodated. In the second embodiment, the positioning plate 91 ′ is mainly provided for fixing the optical fiber 51 ′. In the case of having the positioning plate 91 ′, the base 11 ′ does not need to be provided with the positioning plate 91 ′ in the first embodiment. The optical fiber fixing groove. And the positioning plate 91' is arranged to facilitate the replacement of optical fibers during maintenance. In addition, the number of the two optical fiber fixing holes 912' does not necessarily need to be two, it is determined by the number of optical fibers to be installed, or one or more, depending on the number of optical fibers to be installed.

In addition, in the second embodiment, the adhesive 41' is attached between the positioning plate 91' and the base 11', and attached to the imaging lens 21' and the projection lens 31'. After the optical fiber 51' is fixed with the positioning plate 91', the adhesive 41' is filled into the gap between the positioning plate 91' and the base 11', and then the adhesive 41' is cured. 41', both the imaging lens 21' and the projection lens 31' can be fixed on the base 11'.

As shown in FIG. 12 , the shape of the protective layer 12 ′ is different from the adhesive of the first embodiment, but is provided in the form of a transparent sheet on the head pipe 61 ′ and is located in front of the base 11 ′. The protective layer The appearance of 12' is not limited to the above, and can be designed into any shape according to the situation of use, and its purpose is to prevent the lens from being damaged by other environmental pollution and foreign objects.

The effect that the second embodiment can achieve is that, with the arrangement of the thread 113' and the thread 311', the assembler can adjust the focal length only by rotating the projection lens 31', and the operation is extremely simple and easy, Compared with the prior art, it is more convenient; in addition, with the arrangement of the positioning plate 91', the assembly and replacement of the two optical fibers 51' can be facilitated, and maintenance is facilitated.

The remaining technical features and the effects that can be achieved in the second embodiment are generally the same as those in the first embodiment disclosed above, and will not be repeated here.

10: Endoscope lens combination for easy assembly 11: Pedestal 111: long hole 112: Fiber fixing slot 21: taking lens 31: Projection lens 41: Viscose 51: Optical fiber 61: Head tube 71: Projectile 72: Pattern board 73: circuit board 81: Predetermined pattern 82: Projection light source 10': Easy-to-assemble endoscope lens combination 11': Pedestal 12': protective layer 111': long hole 113': Thread 21': taking lens 31': Projection Lens 311': Thread 41': Viscose 51': Fiber 61': head tube 91': positioning plate 911': lens hole 912’: Fiber fixing hole

FIG. 1 is a perspective view of the first preferred embodiment of the present invention, showing the state of the present invention being installed in the head pipe. FIG. 2 is a perspective view of the first preferred embodiment of the present invention, showing the state after the head pipe is removed. FIG. 3 is an exploded view of the first preferred embodiment of the present invention. FIG. 4 is a schematic cross-sectional view taken along line 4-4 in FIG. 2 . FIG. 5 is an assembly cross-sectional schematic diagram of the first embodiment of the present invention. FIG. 6 is another assembly cross-sectional schematic diagram of the first preferred embodiment of the invention. FIG. 7 is a schematic cross-sectional view taken along line 7-7 in FIG. 1 . FIG. 8 is an operation state diagram of the first preferred embodiment of the present invention. FIG. 9 is a perspective view of the second preferred embodiment of the present invention, showing the state after the head pipe is removed. FIG. 10 is an exploded view of the second preferred embodiment of the present invention. FIG. 11 is a schematic cross-sectional view taken along line 11-11 in FIG. 9 . FIG. 12 is a schematic cross-sectional view of the assembly of the second preferred embodiment of the present invention.

10: Endoscope lens combination for easy assembly

111: long hole

21: taking lens

31: Projection lens

41: Viscose

51: Optical fiber

61: Head tube

72: Pattern board

73: circuit board

82: Projection light source

Claims (9)

An easy-to-assemble endoscope lens assembly is used to be installed in a head tube of an endoscope lens, and the assembly structure of the endoscope lens includes: a base with two long holes running through the front and back, the two long holes respectively have a long axis, and the long axes of the two long holes are substantially parallel to each other, and the length of each long hole along its axial direction is greater than its radius; an image pickup lens, which is accommodated in the long hole, and the front end of the image pickup lens is exposed on the base; a projection lens, which is accommodated in the other elongated hole, and the front end of the projection lens exposes the base, the projection lens is used for projecting a projection, and displays a predetermined pattern on the projection; and An adhesive is attached to the base and attached to at least one of the imaging lens and the projection lens. The easy-to-assemble endoscope lens assembly according to claim 1, wherein: the hole wall of one of the two long holes is provided with threads; the imaging lens and the projection lens are substantially cylindrical, and the One of the imaging lens and the projection lens is connected with a portion of the cylindrical side surface provided with a thread, and is screwed into the long hole provided with the thread. The easily assembled endoscope lens assembly according to claim 1, wherein: the imaging lens and the projection lens are respectively accommodated in the two long holes by the front end of the base. The easily assembled endoscope lens assembly according to claim 1, wherein: the adhesive is used to fix the imaging lens to the base, and to fix the projection lens to the base. The easy-to-assemble endoscope lens assembly according to claim 1, further comprising: a positioning plate disposed in the head tube and located at the front end of the base, the positioning plate having two lens holes and at least one optical fiber fixing hole , the image taking lens and the projection lens pass through the two lens holes and are partially exposed at the front end of the positioning plate, and the at least one optical fiber fixing hole is used for accommodating an optical fiber. The easy-to-assemble endoscope lens assembly according to claim 1, wherein: the base has at least one optical fiber fixing groove for fixing an optical fiber. The easy-to-assemble endoscope lens assembly according to claim 1, further comprising a protective layer disposed on the head pipe and in front of the base. The easy-to-assemble endoscope lens assembly according to claim 7, wherein: the adhesive is a transparent curing adhesive, attached to the head tube, the base, the imaging lens and the projection lens, and is located in the in front of the base to form the protective layer. The easily assembled endoscope lens assembly according to claim 7, wherein: the protective layer is a transparent sheet.

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