WO2025204802A1 - Dispositif de nettoyage de trou et procédé de nettoyage de trou - Google Patents
Dispositif de nettoyage de trou et procédé de nettoyage de trouInfo
- Publication number
- WO2025204802A1 WO2025204802A1 PCT/JP2025/008761 JP2025008761W WO2025204802A1 WO 2025204802 A1 WO2025204802 A1 WO 2025204802A1 JP 2025008761 W JP2025008761 W JP 2025008761W WO 2025204802 A1 WO2025204802 A1 WO 2025204802A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hole
- container
- liquid
- cleaned
- cleaning device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
Definitions
- FIG. 1 is a diagram schematically illustrating a hole cleaning device according to a first embodiment of the present disclosure.
- FIG. 2 shows the liquid overflowing from the second end of the through-hole.
- FIG. 3 is a flow chart illustrating the hole cleaning method.
- FIG. 4 is a diagram schematically illustrating a hole cleaning device according to a first modified example.
- FIG. 5 is a diagram showing how the overflowed liquid is collected in a container.
- FIG. 6 is a diagram schematically illustrating a hole cleaning device according to a second modified example.
- FIG. 7A is a diagram showing a procedure for placing a clad material on a support base in the second modified example.
- FIG. 7B is a diagram showing a procedure for placing the clad material on the support base in the second modified example.
- FIG. 7A is a diagram showing a procedure for placing a clad material on a support base in the second modified example.
- FIG. 7B is a diagram showing a procedure for placing the
- FIG. 14A is a diagram showing a procedure for placing a clad material on a support base in the sixth modified example.
- FIG. 14B is a diagram showing a procedure for placing the clad material on the support base in the sixth modified example.
- FIG. 14C is a diagram showing a procedure for placing the clad material on the support base in the sixth modified example.
- FIG. 15A is a diagram showing a procedure for placing a clad material on a support base in the sixth modified example.
- FIG. 15B is a diagram showing a procedure for placing the clad material on the support base in the sixth modified example.
- FIG. 15C is a diagram showing a procedure for placing the clad material on the support base in the sixth modified example.
- One method for manufacturing optical fiber is the drilling method.
- a through hole is formed in the cladding material, a core material is inserted into the through hole, and the cladding material and core material are heated to integrate them, thereby obtaining a preform for the optical fiber.
- the preform is then spun to obtain the optical fiber.
- the present disclosure aims to provide a hole cleaning device and a hole cleaning method that can avoid the need for large-scale equipment required to clean through holes in an object to be cleaned, such as a clad material. [Effects of the present disclosure]
- This disclosure provides a hole cleaning device and hole cleaning method that can avoid the need to increase the size of the equipment required to clean through-holes in an object to be cleaned.
- a hole cleaning device cleans a through hole of an object to be cleaned having at least one through hole.
- the hole cleaning device includes: a support part that supports the object to be cleaned so that a first end of the through hole is positioned lower than a second end of the through hole; a liquid supply part that includes a bubble generator that generates bubbles in the liquid and supplies the liquid containing bubbles into the through hole from the first end of the through hole; and a first container that accommodates the support part and the object to be cleaned and collects the liquid that overflows from the second end of the through hole.
- a liquid containing bubbles is supplied into the through hole from a first end located below the second end of the through hole.
- the liquid then moves through the through hole to the second end and overflows from the second end.
- the liquid contains bubbles and cleans the inside of the through hole.
- the hole cleaning device of [1] above can be made more compact than conventional devices that clean the inside of through holes using vapor-phase etching and purification gas.
- the bubble generator may include at least one of an aeration device, a microbubble generator, and a nanobubble generator. In this case, fine bubbles with cleaning properties can be generated inside the liquid.
- the support unit may have a second container housed in the first container and spaced apart from the bottom surface to house the object to be cleaned, the liquid supply unit may supply liquid containing bubbles between the bottom surface of the second container and the object to be cleaned, and the first container may collect liquid that overflows from the second container. This allows the liquid containing bubbles to be supplied into the through hole from the first end of the through hole.
- the bubble generator may include at least one of an aeration device, a microbubble generator, a nanobubble generator, and an ultrasonic generator. In this case, fine bubbles with cleaning properties can be generated inside the liquid.
- the second container may be divisible into two or more parts aligned vertically.
- the upper part of the second container can be separated and removed from the lower part in advance, thereby lowering the sidewall of the second container and making it easier to place the object to be cleaned in the second container.
- the first container may be divisible into two or more parts aligned vertically.
- the worker when a worker manually places a heavy object to be cleaned in the first container, the worker can first separate and remove the upper part of the first container from the lower part, thereby lowering the sidewall of the first container and making it easier to place the object to be cleaned in the first container.
- the support part may have a first state in which the object to be cleaned is supported in a tilted state, and a second state in which the object to be cleaned is supported so that the position of the first end is lower than the position of the second end.
- the object to be cleaned when placing an object to be cleaned that is long in the axial direction of the through-hole and heavy on the support part, the object to be cleaned can be first placed in a tilted state (i.e., the first state), and then placed in the state at the time of cleaning (i.e., the second state). In this way, by being able to change the position of the object to be cleaned, an operator can easily place a long and heavy object on the support part by hand.
- the liquid may be water
- the liquid supply unit may further include a water treatment device that increases the purity of the water through at least one of ion exchange, distillation, and filtration. In this case, impurities in the liquid can be minimized, thereby improving the cleaning effect.
- a liquid containing bubbles is supplied into the through hole from a first end located below the second end of the through hole.
- the liquid in the through hole is then moved to the second end and allowed to overflow from the second end.
- the liquid contains bubbles and cleans the through hole.
- the hole cleaning method of [10] above allows for a smaller cleaning device compared to conventional methods that use vapor-phase etching and purification gas to clean the inside of the through hole.
- FIG. 1 is a schematic diagram illustrating a hole cleaning apparatus 1A according to a first embodiment of the present disclosure.
- the hole cleaning apparatus 1A is an apparatus for cleaning the through hole 51 of a clad material 50 (object to be cleaned) having at least one through hole 51.
- the clad material 50 is used to manufacture a single-core fiber.
- the clad material 50 is used to manufacture a multi-core fiber having two cores or a polarization-maintaining fiber.
- the clad material 50 is used to manufacture a multi-core fiber having three or more cores.
- the core density of a multi-core fiber can be improved by arranging multiple cores in a single optical fiber. This makes it possible to increase the number of cores while maintaining a constant outer diameter of an optical fiber cable, or to reduce the outer diameter of the cable while maintaining a constant number of cores incorporated in the optical fiber cable. Furthermore, since the inter-core distance can be made smaller than in a fiber array in which conventional optical fibers are arranged, it is expected that the multi-core fiber will also be used as a high-density optical wiring.
- the hole cleaning device 1A of this embodiment includes a support unit 14, a liquid supply unit 10A, and a container 15A (first container).
- the clad material 50 is cylindrical and extends along the central axis.
- the through-hole 51 penetrates the cylindrical clad material 50 from the first end face to the second end face.
- the cross section perpendicular to the direction in which the through-hole 51 extends is circular.
- the clad material 50 is made of, for example, quartz glass.
- the through-hole 51 has a first end 51a formed on the first end face of the clad material 50 and a second end 51b formed on the second end face of the clad material 50.
- the support portion 14 supports the clad material 50 so that the position of the first end 51a of the through hole 51 is lower than the position of the second end 51b of the through hole 51.
- the support portion 14 has a support base 14A.
- the support base 14A includes a table placed above the bottom surface of the container 15A, and the clad material 50 is placed on the table.
- the clad material 50 is erected on the support base 14A so that the first end surface faces the support base 14A.
- the central axis of the clad material 50 is perpendicular to the surface of the table of the support base 14A. In this case, the central axis of the clad material 50 may be along the vertical direction.
- the liquid supply unit 10A supplies liquid LQ containing bubbles from the first end 51a of the through-hole 51 into the through-hole 51.
- the liquid LQ is, for example, water, and may be pure water.
- the liquid supply unit 10A of this embodiment has a water treatment device 11, a bubble generation device 12, and a component 13.
- the water treatment device 11 receives water as liquid LQ via piping 21 and increases the purity of the water by at least one of ion exchange, distillation, and filtration.
- the bubble generation device 12 is connected to the water treatment device 11 via piping 22 and generates bubbles within the liquid LQ.
- a piping 24 is connected to the bubble generation device 12, which introduces gas GS for forming bubbles.
- the bubble generation device 12 includes, for example, at least one of an aeration device, a microbubble generator, and a nanobubble generator.
- the component 13 is connected to the bubble generation device 12 via piping 23.
- the part 13 is placed on the table of the support stand 14A and is connected to the first end surface of the clad material 50, which includes the first end 51a of the through hole 51.
- the part 13 guides the liquid LQ containing bubbles from the first end 51a of the through hole 51 into the through hole 51.
- the part 13 is, for example, a coupler or a joint.
- Liquid LQ containing air bubbles is supplied into the through-hole 51 from the first end 51a, which is located below the second end 51b of the through-hole 51.
- the liquid LQ then moves through the through-hole 51 to the second end 51b and overflows from the second end 51b.
- the liquid LQ contains air bubbles, it cleans the inside of the through-hole 51, and foreign matter FM inside the through-hole 51 is expelled from the through-hole 51.
- the hole cleaning device 1A further includes a waste liquid tank 16 and a pump 17.
- the waste liquid tank 16 is a container that temporarily stores the liquid LQ discharged from the pipe 151.
- the liquid LQ in the waste liquid tank 16 is sucked up by the pump 17 through the pipe 25, and then discarded outside the hole cleaning device 1A.
- FIG. 3 is a flowchart showing the hole cleaning method of this embodiment.
- This hole cleaning method can be performed using, for example, the hole cleaning device 1A described above.
- This hole cleaning method is a method for cleaning the through hole 51 of a clad material 50 having at least one through hole 51.
- This hole cleaning method includes a first step ST1, a second step ST2, and a third step ST3.
- the first step ST1 the clad material 50 is supported so that the position of the first end 51a of the through hole 51 is lower than the position of the second end 51b of the through hole 51.
- bubbles are generated inside the liquid LQ, and the liquid LQ containing the bubbles is supplied from the first end 51a of the through hole 51 into the through hole 51.
- the liquid LQ may be water.
- the purity of the water may be increased by at least one process of ion exchange, distillation, and filtration.
- the liquid LQ that has overflowed from the second end 51b of the through-hole 51 is collected.
- liquid LQ containing bubbles is supplied into the through-hole 51 from the first end 51a, which is located below the second end 51b of the through-hole 51.
- the liquid LQ then moves within the through-hole 51 to the second end 51b and overflows from the second end 51b.
- the liquid LQ contains bubbles and cleans the inside of the through-hole 51.
- the hole cleaning device 1A of this embodiment can be made smaller than conventional devices that clean the inside of the through-hole 51 using vapor-phase etching and purification gas. Therefore, the hole cleaning device 1A of this embodiment can avoid the need for larger equipment to clean the through holes 51 in the cladding material 50 when manufacturing optical fiber preforms using the drilling method.
- liquid LQ containing bubbles is supplied into the through hole 51 from the first end 51a, which is located below the second end 51b of the through hole 51.
- the liquid LQ in the through hole 51 is then moved to the second end 51b and allowed to overflow from the second end 51b.
- the liquid LQ contains bubbles and cleans the inside of the through hole 51.
- a sufficient amount of liquid LQ can be retained within the through hole 51 for a sufficient period of time, thereby improving the cleaning effect.
- the hole cleaning method of this embodiment allows for a smaller cleaning device than conventional methods that clean the inside of the through hole 51 using vapor-phase etching and purification gas. Therefore, the hole cleaning method of this embodiment makes it possible to avoid increasing the size of the equipment required to clean the through hole 51 in the cladding material 50 when manufacturing an optical fiber preform by a drilling method.
- the liquid supply unit 10A may have a component 13 that is connected to the first end surface of the clad material 50, including the first end 51a of the through hole 51, and that guides the liquid LQ containing bubbles from the first end 51a of the through hole 51 into the through hole 51. This allows the liquid LQ containing bubbles to be supplied into the through hole 51 from the first end 51a of the through hole 51.
- the bubble generator 12 may include at least one of an aeration device, a microbubble generator, and a nanobubble generator. In this case, fine bubbles with a cleaning effect can be generated inside the liquid LQ.
- the liquid LQ is water
- the liquid supply unit 10A may further include a water treatment device 11 that increases the purity of the water through at least one of ion exchange, distillation, and filtration.
- impurities in the liquid LQ can be minimized, thereby improving the cleaning effect.
- FIG. 4 is a diagram schematically illustrating a hole cleaning apparatus 1B according to a first modified example of the above embodiment.
- Fig. 5 is a diagram illustrating how the overflowing liquid LQ is collected in a container 15A in the hole cleaning apparatus 1B shown in Fig. 4.
- the hole cleaning apparatus 1B of this modified example includes a liquid supply unit 10B instead of the liquid supply unit 10A of the above embodiment.
- the liquid supply unit 10B is the same as the liquid supply unit 10A except that it does not include a component 13.
- the support unit 14 of this modified example includes a container 20A (second container) in addition to a support base 14A.
- Container 20A is, for example, a cylindrical, bottomed container with one closed end.
- Container 20A is housed in container 15A and placed on support stand 14A.
- Clad material 50 is housed in container 20A at a distance from the bottom surface of container 20A. Specifically, an annular support member 19 is placed on the bottom surface of container 20A, and a mesh material 18 with multiple openings is placed on support member 19. Clad material 50 is then placed on mesh material 18 so that the first end surface of clad material 50 faces mesh material 18.
- the pipe 23 of the liquid supply unit 10B is connected to the bottom of the container 20A.
- the liquid supply unit 10B supplies the liquid LQ, which contains bubbles, to the space between the bottom surface of the container 20A and the clad material 50, specifically, to the space formed inside the annular support member 19.
- the liquid LQ moves from the bottom to the top of the container 20A.
- the liquid LQ moves through the through-hole 51 to the second end 51b and overflows from the second end 51b.
- the liquid LQ contains bubbles, so it cleans the inside of the through-hole 51, and foreign matter FM within the through-hole 51 is discharged from the through-hole 51.
- the container 15A collects the liquid LQ that overflows from the container 20A.
- the support unit 14 may have a container 20A that contains the clad material 50 housed in the container 15A and spaced apart from the bottom surface.
- the liquid supply unit 10A may supply the liquid LQ containing bubbles between the bottom surface of the container 20A and the clad material 50, and the container 15A may collect the liquid LQ that overflows from the container 20A. This allows the liquid LQ containing bubbles to be supplied into the through-hole 51 from the first end 51a of the through-hole 51.
- the bubble generator 12 may also include at least one of an aeration device, a microbubble generator, and a nanobubble generator. In this case, fine bubbles with a cleaning effect can be generated inside the liquid LQ.
- FIG. 6 is a schematic diagram illustrating a hole cleaning device 1C according to a second modification of the embodiment.
- the hole cleaning device 1C of this modification includes a container 15B (first container) instead of the container 15A of the embodiment.
- the container 15B can be separated into two or more vertically aligned portions.
- the container 15B can be separated into a lower portion 152 and an upper portion 153 that are vertically aligned, and then recombined.
- Figures 7A, 7B, and 7C are diagrams showing the procedure for placing the clad material 50 on the support table 14A in this modified example.
- the upper part 153 of the container 15B is separated and removed from the lower part 152 in advance.
- the clad material 50 is placed on the support table 14A and connected to the part 13.
- the upper part 153 of the container 15B is reconnected to the lower part 152. After this, liquid LQ is supplied to the clad material 50 via the part 13.
- the container 15B may be divisible into two or more vertically aligned sections.
- the upper part 153 of the container 15B can be separated and removed from the lower part 152 in advance, thereby lowering the side walls of the container 15B and making it easier to place the clad material 50 in the container 15B.
- FIG. 8 is a schematic diagram illustrating a portion of a hole cleaning device 1D according to a third modification of the embodiment.
- the hole cleaning device 1D of this modification includes a container 15B (first container) instead of the container 15A of the embodiment.
- the container 15B is the same as that of the second modification.
- the support unit 14 of the hole cleaning device 1D of this modification includes a support table 14B instead of the support table 14A of the embodiment.
- the support table 14B includes a base 141, a table 142, and a hinge 143.
- the base 141 is installed on the bottom surface of the container 15B.
- the table 142 is connected to the base 141 by the hinge 143 and is rotatable about the hinge 143 relative to the base 141.
- the support table 14B of this modification further includes a support plate 144 and a support table 145.
- One end of the support plate 144 is fixed to the table 142, and the support plate 144 supports a support base 145.
- the support base 145 is in contact with the side surface of the clad material 50.
- FIG. 9A, 9B, 9C, and 9D are diagrams showing the procedure for placing the clad material 50 on the support table 14B in this modified example.
- the upper part 153 of the container 15B is separated from the lower part 152 and removed in advance.
- the table 142 and the support plate 144 are rotated around the hinge 143 so that the surface of the support table 145 that comes into contact with the clad material 50 is horizontal.
- the clad material 50 with the component 13 connected is placed on the support table 145 in a tilted position, i.e., so that the side of the clad material 50 is in contact with the support table 145.
- FIG. 9A the upper part 153 of the container 15B is separated from the lower part 152 and removed in advance.
- the table 142 and the support plate 144 are rotated around the hinge 143 so that the surface of the support table 145 that comes into contact with the clad material 50 is horizontal.
- the clad material 50 with the component 13 connected is placed on the
- the support portion 14 may have a first state (see FIG. 9A) in which the clad material 50 is supported in a laid-down state, and a second state (see FIGS. 8 and 9C) in which the clad material 50 is supported so that the position of the first end 51a is lower than the position of the second end 51b.
- the clad material 50 when installing a clad material 50 that is long in the axial direction of the through hole 51 and heavy, on the support portion 14, the clad material 50 can first be installed in a laid-down state (i.e., the first state), and then in a state for cleaning (i.e., the second state). In this way, the ability to change the position of the clad material 50 allows an operator to easily install a long and heavy clad material 50 on the support portion 14 by hand.
- FIG. 10 is a schematic diagram illustrating a hole cleaning device 1E according to a fourth modification of the embodiment.
- the hole cleaning device 1E of this modification includes a container 15B (first container) instead of the container 15A of the first modification.
- the container 15B is the same as that of the second modification (see FIG. 6 ).
- the support unit 14 of the hole cleaning device 1E of this modification includes a container 20B (second container) instead of the container 20A of the first modification.
- the container 20B can be separated into two or more vertically aligned portions. In the illustrated example, the container 20B can be separated into a lower portion 201 and an upper portion 202 vertically aligned and then recombined.
- FIG. 11A, 11B, 11C, and 11D are diagrams showing the procedure for placing the clad material 50 on the support table 14A in this modified example.
- the upper part 153 of the container 15B is separated and removed from the lower part 152 in advance.
- the lower part 201 of the container 20B is placed on the support table 14A together with the mesh material 18 and support part 19.
- the clad material 50 is placed on the support table 14A (specifically, on the mesh material 18).
- FIG. 11C the upper part 202 of the container 20B is rejoined to the lower part 201.
- FIG. 11D the upper part 153 of the container 15B is rejoined to the lower part 152.
- liquid LQ is supplied into the gap between the bottom surface of the container 20B and the clad material 50.
Landscapes
- Cleaning By Liquid Or Steam (AREA)
Abstract
La présente invention concerne un dispositif de nettoyage de trou qui nettoie un trou traversant d'un objet à nettoyer qui a au moins un trou traversant. Le dispositif de nettoyage de trou comprend une partie de support qui supporte l'objet à nettoyer de telle sorte que la position d'une première extrémité du trou traversant est inférieure à la position d'une seconde extrémité du trou traversant, une partie d'alimentation en liquide qui comprend un dispositif de génération de bulles et fournit un liquide qui comprend des bulles qui ont été générées dans le liquide par le dispositif de génération de bulles dans le trou traversant à partir de la première extrémité du trou traversant, et un premier récipient qui reçoit la partie de support et l'objet à nettoyer et récupère le liquide qui s'est déversé à partir de la seconde extrémité du trou traversant.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2024-050977 | 2024-03-27 | ||
| JP2024050977 | 2024-03-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2025204802A1 true WO2025204802A1 (fr) | 2025-10-02 |
Family
ID=97217184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2025/008761 Pending WO2025204802A1 (fr) | 2024-03-27 | 2025-03-10 | Dispositif de nettoyage de trou et procédé de nettoyage de trou |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2025204802A1 (fr) |
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| US20110013870A1 (en) * | 2009-07-14 | 2011-01-20 | Sercalo Microtechnology Limited | Coupling device for optical fibres |
| US20130084047A1 (en) * | 2011-09-30 | 2013-04-04 | James Lee Baucom | Fiber optic ribbon cable having enhanced ribbon stack coupling and methods thereof |
| CN108363152A (zh) * | 2018-01-26 | 2018-08-03 | 西安西古光通信有限公司 | 一种非金属纱镶嵌式防鼠光缆及其制作方法 |
| CN209374078U (zh) * | 2018-12-13 | 2019-09-10 | 宏安集团有限公司 | 一种光纤复合型数据电缆 |
| WO2021189939A1 (fr) * | 2020-03-22 | 2021-09-30 | 常熟市谷雷特机械产品设计有限公司 | Câble optique de communication pour réseau 5g, et câble composite photoélectrique et son procédé de fabrication |
| CN215181092U (zh) * | 2021-06-19 | 2021-12-14 | 山东希尔电缆有限公司 | 一种高韧性光纤钢丝 |
| JP2023070250A (ja) * | 2021-11-09 | 2023-05-19 | 住友電気工業株式会社 | 冷却容器、x線装置、x線画像処理装置及びx線画像処理方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002544102A (ja) * | 1999-05-07 | 2002-12-24 | 信越石英株式会社 | SiO2粒子の洗浄方法、該方法を実施する装置、および該方法により製造された粗粒 |
| JP3102667U (ja) * | 2004-01-06 | 2004-07-15 | 洪禎宏 | 光ファイバ伝送線 |
| JP2007538287A (ja) * | 2004-05-18 | 2007-12-27 | コーニング ケーブル システムズ リミテッド ライアビリティ カンパニー | 乾燥性挿入層を有する光学チューブ組立体 |
| US20110013870A1 (en) * | 2009-07-14 | 2011-01-20 | Sercalo Microtechnology Limited | Coupling device for optical fibres |
| US20130084047A1 (en) * | 2011-09-30 | 2013-04-04 | James Lee Baucom | Fiber optic ribbon cable having enhanced ribbon stack coupling and methods thereof |
| CN108363152A (zh) * | 2018-01-26 | 2018-08-03 | 西安西古光通信有限公司 | 一种非金属纱镶嵌式防鼠光缆及其制作方法 |
| CN209374078U (zh) * | 2018-12-13 | 2019-09-10 | 宏安集团有限公司 | 一种光纤复合型数据电缆 |
| WO2021189939A1 (fr) * | 2020-03-22 | 2021-09-30 | 常熟市谷雷特机械产品设计有限公司 | Câble optique de communication pour réseau 5g, et câble composite photoélectrique et son procédé de fabrication |
| CN215181092U (zh) * | 2021-06-19 | 2021-12-14 | 山东希尔电缆有限公司 | 一种高韧性光纤钢丝 |
| JP2023070250A (ja) * | 2021-11-09 | 2023-05-19 | 住友電気工業株式会社 | 冷却容器、x線装置、x線画像処理装置及びx線画像処理方法 |
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