An integrally formed multi-fiber device

Abstract

This utility model discloses an integrated multi-head optical fiber device, relating to the field of optical fiber guiding technology. The technical solution includes a main optical fiber and sub-optical fibers. The main optical fiber adopts an integrated structure, and from the outside to the inside, it is sequentially provided with a first PVC protective layer, a first high-transparency fluoropolymer cladding, a first PMMA light-guiding core, a second high-transparency fluoropolymer cladding, and a PVC black inner core. The sub-optical fibers are integrally formed with the main optical fiber, and from the outside to the inside, they are sequentially provided with a second PVC protective layer, a third high-transparency fluoropolymer cladding, and a second PMMA light-guiding core. One end of the main optical fiber is provided with a cap assembly, and the other end is provided with a connector assembly. This utility model, through the sub-optical fibers' uniform circular distribution design at a 45-degree angle, can capture sunlight from different angles in all directions, completely solving the problems of traditional single-fiber light guiding angles being singular and greatly affected by the Earth's rotation. This achieves continuous and stable light guiding, reduces light guiding loss, and increases the light guiding distance.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber guiding technology, specifically to an integrated multi-head optical fiber device. Background Technology

[0002] With the development of green energy utilization technology, solar light guiding technology has received widespread attention in the fields of indoor lighting and facility agriculture due to its advantages of being clean, pollution-free, and sustainable. At present, single plastic optical fiber light guiding technology has become mature. Sunlight can travel 5 meters in a single optical fiber and still provide efficient natural spectrum for indoor plants. Its lighting effect is better than that of traditional supplemental lighting.

[0003] Existing single optical fibers have a single light guiding angle, which can only capture direct sunlight in a fixed direction. Affected by the Earth's rotation, the light angle changes continuously, resulting in large fluctuations in light guiding efficiency. This makes it impossible to achieve a continuous and stable light supply, increasing the cost of use. There is a lack of convenient and reliable connection structures between optical fibers. Traditional connection methods are mostly direct winding or simple splicing, which are prone to loosening at the connection point. The optical fiber incident end lacks an effective light focusing and stray light shielding structure. External stray light can easily interfere with the incident light, and scattered light cannot be fully utilized, thus limiting the light guiding efficiency. Utility Model Content

[0004] Therefore, this utility model provides an integrated multi-head optical fiber device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated multi-head optical fiber device, comprising a main optical fiber and a sub-optical fiber. The main optical fiber adopts an integrated structure, and from the outside to the inside, the main optical fiber is provided with a first PVC protective layer, a first high-transparency fluororesin cladding, a first PMMA light guide core, a second high-transparency fluororesin cladding, and a PVC black inner core. The sub-optical fiber is integrally formed with the main optical fiber, and from the outside to the inside, the sub-optical fiber is provided with a second PVC protective layer, a third high-transparency fluororesin cladding, and a second PMMA light guide core. One end of the main optical fiber is provided with a cap assembly, and the other end of the main optical fiber is provided with a docking assembly.

[0006] Preferably, the cap assembly includes an optical fiber cap, which is fixedly sleeved on the incident end of the main optical fiber. The outer side of the optical fiber cap is made of black PVC material, and the inner side of the optical fiber cap is provided with a highly reflective metal mirror.

[0007] Preferably, the docking assembly includes a connecting cylinder, which is sleeved outside the first PVC protective layer. A light-transmitting plate is fixedly installed inside the connecting cylinder. Threaded caps are threaded onto both sides of the outer surface of the connecting cylinder. Multiple side grooves are formed on the outer surface of the connecting cylinder. Pressure blocks are fixedly installed inside the side grooves and are in contact with the first PVC protective layer.

[0008] Preferably, the first PVC protective layer, the PVC black inner core, and the second PVC protective layer are all made of flame-retardant PVC material.

[0009] Preferably, the refractive index of the first highly transparent fluororesin coating is lower than the refractive index of the first PMMA light guide core material.

[0010] Preferably, the outer surface of the fiber cap is provided with anti-slip grooves.

[0011] Preferably, the outer surface of the threaded cap is provided with anti-slip texture.

[0012] Preferably, the sub-fibers are arranged in a loop outside the main fiber, and the sub-fibers form an angle with the axis of the main fiber.

[0013] Preferably, the highly reflective metallic mirror is made of aluminum.

[0014] The present invention has the following beneficial effects: 1. The sub-fibers are designed with a uniform ring distribution at a 45-degree angle, which can capture sunlight from different angles in all directions. This completely solves the problems of traditional single-fiber light guiding angle being singular and greatly affected by the Earth's rotation, achieving continuous and stable light guiding. The one-piece molding process avoids splicing gaps. Combined with the optimized refractive index matching of high-transparency fluororesin cladding and PMMA light guiding core material, light guiding loss is reduced and light guiding distance is increased, meeting the needs of plant growth and lighting. The aluminum high-reflectivity mirror on the inner side of the fiber cap further concentrates the light, improving light utilization. The structure of a single main fiber with multiple sub-fibers reduces the total amount of fiber used compared to the traditional single-fiber mass laying scheme, significantly reducing procurement and laying costs. 2. The optical fiber and sub-optical fiber are integrally formed without splicing, which significantly improves the impact and vibration resistance and extends the service life. The first PVC protective layer, the PVC black inner core and the second PVC protective layer are all made of flame-retardant materials, which effectively reduces the risk of fire. It is suitable for enclosed scenarios such as indoor and underground greenhouses. Through the docking component design, the optical fiber can be quickly docked by driving the elastic pressure block with the threaded cap. No professional tools are required and the operation is simple. The light guiding distance can be flexibly extended according to the needs to adapt to different scenarios. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0017] Figure 1 A schematic diagram of the overall structure of this utility model; Figure 2 This is a front sectional view of the overall structure provided by this utility model; Figure 3 A side sectional view of the overall structure provided for this utility model; Figure 4 Provided by this utility model Figure 1 Enlarged view of the structure of section A in the middle; Figure 5 Provided by this utility model Figure 2 Enlarged view of the structure of section B in the middle.

[0018] In the diagram: 1. Main optical fiber; 101. First PVC protective layer; 102. First high-transparency fluoropolymer cladding; 103. First PMMA light guide core; 104. Second high-transparency fluoropolymer cladding; 105. PVC black inner core; 2. Fiber cap; 201. High-reflective metal mirror; 3. Sub-fiber; 301. Second PVC protective layer; 302. Third high-transparency fluoropolymer cladding; 303. Second PMMA light guide core; 4. Connecting tube; 5. Threaded cap; 6. Light-transmitting plate; 7. Side groove; 8. Pressure block. Detailed Implementation

[0019] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] See attached document Figure 1 -Appendix Figure 5This utility model provides an integrated multi-head optical fiber device, including a main optical fiber 1 and a sub-optical fiber 3. The main optical fiber 1 adopts an integrated structure and, from the outside to the inside, is provided with a first PVC protective layer 101, a first high-transparency fluoropolymer cladding 102, a first PMMA light guide core material 103, a second high-transparency fluoropolymer cladding 104, and a PVC black inner core 105. The sub-optical fiber 3 is integrally formed with the main optical fiber 1 and, from the outside to the inside, is provided with a second PVC protective layer 301, a third high-transparency fluoropolymer cladding 104, and a second high-transparency fluoropolymer cladding 105. The main optical fiber 1 has a cap assembly at one end and a docking assembly at the other end. The first PVC protective layer 101, the PVC black inner core 105, and the second PVC protective layer 301 are all made of flame-retardant PVC material. The refractive index of the first high-transparency fluoropolymer cladding 102 is lower than that of the first PMMA light guide core 103. The sub-optical fibers 3 are distributed in a loop on the outside of the main optical fiber 1, and the sub-optical fibers 3 form a 45-degree angle with the axis of the main optical fiber 1. In this embodiment, the main optical fiber 1 and the sub-optical fiber 3 are integrally formed by extrusion process to ensure that the optical interface is continuous and seamless. The sub-optical fiber 3 is arranged in a 45-degree surround layout, which can cover a wider range of incident angles and improve the all-weather light capture capability. The black inner core 105 can absorb internal stray reflected light, avoid the ineffective circulation of light energy inside the optical fiber, and improve the light guiding efficiency. To achieve efficient light focusing and protection against stray light interference, this device employs the following technical solution: The cap assembly includes an optical fiber cap 2, which is fixedly fitted onto the incident end of the main optical fiber 1. The outer side of the optical fiber cap 2 is made of black PVC material, and the inner side of the optical fiber cap 2 is provided with a highly reflective metal mirror 201. The outer surface of the optical fiber cap 2 is provided with an anti-slip groove. The highly reflective metal mirror 201 is made of aluminum. The black outer shell of the optical fiber cap 2 can block external ambient light interference, and the inner aluminum mirror can effectively reflect the incident light and guide it into the optical fiber, thereby improving the light energy utilization rate. To achieve rapid and reliable connection and easy deployment, this device adopts the following technical solution: The docking assembly includes a connecting cylinder 4, which is sleeved on the outside of the first PVC protective layer 101. A light-transmitting plate 6 is fixedly installed inside the connecting cylinder 4. Threaded caps 5 are threaded on both sides of the outside of the connecting cylinder 4. Multiple side grooves 7 are opened on the outer surface of the connecting cylinder 4. A pressure block 8 is fixedly installed inside the side grooves 7. The pressure block 8 is in contact with the first PVC protective layer 101. The outer surface of the threaded cap 5 is provided with anti-slip texture. The light-transmitting plate 6 is made of optical glass to ensure smooth light transmission. Rotating the threaded cap 5 can push the pressure block 8 to press the optical fiber inward, achieving a firm connection and facilitating disassembly and maintenance. The usage process of this utility model is as follows: The light guide path and length are determined according to the usage scenario, such as underground greenhouses and indoor lighting areas. If the length of a single optical fiber is insufficient, it can be extended by connecting components. The output and input ends of the two main optical fibers 1 are inserted into the two ends of the connecting tube 4 respectively to ensure that the end faces of the two main optical fibers 1 are in close contact with the light-transmitting plate 6 without obvious gaps. Manually rotate the threaded caps 5 on both sides of the connecting cylinder 4, and use the threaded engagement to move the threaded caps 5 along the axis of the connecting cylinder 4. During the movement of the threaded caps 5, they squeeze the pressure block 8 in the side groove 7, causing the pressure block 8 to shrink inward and fit tightly against the first PVC protective layer 101 of the main optical fiber 1. The two main optical fibers 1 are firmly connected through friction. With the end of the main optical fiber 1 equipped with the optical fiber cap 2 facing the direction of outdoor sunlight, no additional angle tracking equipment is required. The 45-degree circular distribution of the sub-optical fibers 3 can automatically capture direct sunlight at different times and angles. The black PVC material on the outside of the optical fiber cap 2 can shield external stray light interference, and the aluminum high-reflectivity metal mirror 201 on the inside can reflect the scattered light and oblique light at the incident end into the first PMMA light guide core material 103, thereby improving light utilization. Light supply: Sunlight is transmitted through the second PMMA light guide core material 303 of the sub-fiber 3 and the first PMMA light guide core material 103 of the main fiber 1. The highly transparent fluororesin cladding has a lower refractive index than the PMMA light guide core material, thus creating total internal reflection conditions, which constrains the light to propagate within the core material, reduces light leakage along the way, and transmits the light to the indoor or underground greenhouse. This can directly provide the natural spectrum for plant growth, or achieve indoor lighting through a diffusion device.

[0021] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A one-piece multi-fiber device comprising a main optical fiber (1) and a sub optical fiber (3), characterized in that: The main optical fiber (1) adopts an integral molding structure. The main optical fiber (1) is provided with a first PVC protective layer (101), a first high-transparency fluororesin cladding (102), a first PMMA light guide core material (103), a second high-transparency fluororesin cladding (104), and a PVC black inner core (105) from the outside to the inside. The sub-optical fiber (3) is integrally molded with the main optical fiber (1). The sub-optical fiber (3) is provided with a second PVC protective layer (301), a third high-transparency fluororesin cladding (302), and a second PMMA light guide core material (303) from the outside to the inside. One end of the main optical fiber (1) is provided with a cap assembly, and the other end of the main optical fiber (1) is provided with a docking assembly.

2. The integrally formed multi-fiber ferrule of claim 1, wherein: The cap assembly includes an optical fiber cap (2), which is fixedly sleeved on the incident end of the main optical fiber (1). The outer side of the optical fiber cap (2) is made of black PVC material, and the inner side of the optical fiber cap (2) is provided with a highly reflective metal mirror (201).

3. The integrally formed multi-fiber ferrule of claim 1, wherein: The docking assembly includes a connecting cylinder (4), which is sleeved on the outside of the first PVC protective layer (101). A light-transmitting plate (6) is fixedly provided inside the connecting cylinder (4). Threaded caps (5) are threaded on both sides of the outside of the connecting cylinder (4). Multiple side grooves (7) are opened on the outer surface of the connecting cylinder (4). A pressure block (8) is fixedly provided inside the side groove (7). The pressure block (8) is in contact with the first PVC protective layer (101).

4. The integrally formed multi-fiber ferrule of claim 1, wherein: The first PVC protective layer (101), the PVC black inner core (105), and the second PVC protective layer (301) are all made of flame-retardant PVC material.

5. The integrally formed multi-fiber ferrule of claim 1, wherein: The refractive index of the first highly transparent fluoropolymer coating (102) is lower than that of the first PMMA light guide core material (103).

6. The integrally formed multi-fiber ferrule of claim 2, wherein: The outer surface of the fiber cap (2) is provided with anti-slip grooves.

7. The integrally formed multi-fiber ferrule of claim 3, wherein: The outer surface of the threaded cap (5) is provided with anti-slip texture.

8. The integrally molded multi-head optical fiber device according to claim 1, characterized in that: The sub-fiber (3) is arranged in a ring outside the main fiber (1), and the sub-fiber (3) forms a 45-degree angle with the axis of the main fiber (1).

9. The integrally formed multi-fiber ferrule of claim 2, wherein: The highly reflective metal mirror (201) is made of aluminum.

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