An optical transmission device

Abstract

This utility model provides an optical transmission device, comprising: an optical fiber bundle section, which includes an optical fiber encapsulation shell, at least one optical fiber, and a fixing bracket; the optical fiber encapsulation shell bundles the optical fibers and fixes them to the fixing bracket; a fixing section, connected to the fixing bracket, including a hollow bracket and a fixing base connected to each other, the hollow bracket having a cavity inside; and a light guide section, connected to the fixing base, including a light guide medium at the center, an insulating layer wrapped around the light guide medium, a light guide shell wrapped around the insulating layer, and a cover wrapped around the light guide shell, wherein the light guide medium includes an incident end for receiving incident light and an exit end for emitting outgoing light. With the above technical solution, the light energy is more concentrated during transmission, and there is a certain degree of heat insulation with external equipment, reducing heat leakage.

Description

Technical Field

[0001] This utility model relates to the field of energy conversion, and in particular to an optical transmission device. Background Technology

[0002] Energy exists in different forms and is crucial for life and development on our planet. Among them, solar energy, as a form of energy, is widely used by humankind.

[0003] Currently, the utilization of solar energy mainly focuses on collection and power generation. For example, the photovoltaic effect directly converts light energy into electrical energy, which leads to a relatively low overall efficiency of existing solar energy utilization devices. In addition, there are output forms that convert light energy into heat energy, such as for heating or industrial heating processes. However, the following problems exist in the process of converting light energy into heat energy: During the process of receiving and transmitting light, the light energy is not concentrated and the energy input port area is too large, resulting in serious heat leakage. The converted heat energy radiates outwards, causing energy loss.

[0004] Therefore, there is an urgent need to develop a new type of optical transmission device that can achieve efficient light collection within a limited area. Utility Model Content

[0005] In order to overcome the above-mentioned technical defects, the purpose of this utility model is to provide an optical transmission device that can concentrate light energy during transmission and provide a certain degree of insulation from external equipment, thereby reducing heat leakage.

[0006] This utility model discloses an optical transmission device, which includes: The fiber optic bundle includes a fiber optic encapsulation shell, at least one fiber optic cable, and a fixing bracket. The fiber optic encapsulation shell encapsulates the fiber optic cable into a bundle and fixes it to the fixing bracket. The fixing part, connected to the fixing bracket, includes a hollow bracket and a fixing base that are connected to each other, and the hollow bracket has a cavity inside; The light guide section, connected to the fixed base, includes a light guide medium located at the center, an insulating layer wrapped around the light guide medium, a light guide shell wrapped around the insulating layer, and a cover wrapped around the light guide shell. The light guide medium includes an incident end for receiving incident light and an exiting end for emitting outgoing light.

[0007] Preferably, the gap between the optical fiber packaging shell and at least one optical fiber in the optical fiber bundle is filled with a light-transmitting adhesive to form a rod-shaped optical fiber rod. The fiber optic packaging shell is made of any one of the following materials: metal, polymer, or nanomaterial.

[0008] Preferably, the fiber optic packaging shell includes an inner shell and at least one outer shell, with the outer shell located around the outer edge of the inner shell; The inner outer shell is arranged with the center point of the fiber bundle section as the center, and the inner outer shell is at an angle of 10°-20° to the vertical direction; The outer shell is arranged with the center point of the fiber bundle as the center, and the outer shell is at an angle of 20°-30° to the vertical direction.

[0009] Preferably, the inner shell includes a first fixed end and a second fixed end. The first fixed end is fixed to the fixed bracket, and the second fixed end extends in a direction away from the axis of the fixed bracket. The horizontal distance from the first fixed end to the axis of the fixed bracket is less than the horizontal distance from the second fixed end to the axis of the fixed bracket, so that the inner shell diffuses away from the axis of the fiber bundle. The outer shell includes a third fixed end and a fourth fixed end. The third fixed end is fixed on the fixed bracket, and the fourth fixed end extends away from the axis of the fixed bracket. The horizontal distance from the third fixed end to the axis of the fixed bracket is less than the horizontal distance from the fourth fixed end to the axis of the fixed bracket, so that the outer shell diffuses away from the axis of the fiber bundle.

[0010] Preferably, the mounting bracket is made of a thermally conductive material; the mounting bracket is externally equipped with heat dissipation components, which are heat dissipation fins or heat dissipation pipes; The fixed bracket is also equipped with a temperature detection device to detect the temperature of the fixed bracket.

[0011] Preferably, the hollow support is provided with an observation window; the external grinding equipment processes the light-inlet and light-outlet ends of the optical fiber to obtain a smooth surface.

[0012] Preferably, the light guiding medium is a cylinder or a frustum, and the diameter ratio of the incident end to the exit end is between 1:1 and 2:1. Preferably, the incident end and / or exit end of the light guiding medium has a coating layer; The light guide medium is fixed on the light guide shell, and at least one of the incident end and the exit end is connected to the light guide shell.

[0013] Preferably, the light guide shell is a centrally symmetrical three-dimensional shape with equal thickness everywhere.

[0014] Preferably, the optical transmission device further includes a housing with an inner cavity, a light guide portion placed inside the inner cavity, and a heat insulation layer provided between the light guide portion and the inner wall of the housing.

[0015] Compared with existing technologies, the above technical solution has the following advantages: By using the fiber optic encapsulation shell to dissipate heat from the bundled fibers, the problem of heat accumulation during the fiber bundling process can be effectively solved, the temperature of the entire system can be kept stable, and the performance of the fiber or physical damage caused by overheating can be avoided. After high-precision polishing at both ends of the optical fiber, a fiber end face with low surface roughness and extremely high optical transmittance is finally obtained, which significantly improves optical transmission efficiency. The light guide medium is made of a highly transparent material with low thermal conductivity. It has excellent short-wavelength light transmission characteristics and long-wavelength blocking properties, ensuring light transmission while reducing heat conduction. Attached Figure Description

[0016] Figure 1 A schematic diagram of the optical transmission device in a preferred embodiment of this utility model.

[0017] Reference numerals in the attached figures: 1-Temperature detection device; 2-Fiber optic encapsulation shell; 3-Fixed bracket; 4-Hollow bracket; 5-Fixed base; 6-Light guiding medium; 7-Insulation layer; 8-Light guiding shell; 9-Cover; 10-Heat insulation layer; 11-Shell. Detailed Implementation

[0018] The advantages of this utility model are further illustrated below with reference to the accompanying drawings and specific embodiments.

[0019] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0020] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0021] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0022] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0024] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrating this invention and has no specific meaning in itself. Therefore, "module" and "part" can be used interchangeably.

[0025] In the description of this utility model, it should be understood that the terms "length", "width", and "height" are based on the description shown in the accompanying drawings. By default, "height" is used in the vertical direction, "length" is used for the longer side in the horizontal direction, and "width" is used for the convenience of describing this utility model and simplifying the description. Therefore, they should not be construed as limiting this utility model.

[0026] The advantages of this utility model are further illustrated below with reference to the accompanying drawings and specific embodiments.

[0027] See appendix Figure 1The diagram illustrates a structural schematic of an optical transmission device according to a preferred embodiment of the present invention. In this embodiment, the optical transmission device includes an optical fiber bundler, a fixing part, and a light guide. The optical fiber bundler is used to bundle optical fibers and fix them in predetermined positions according to a predetermined arrangement. The fixing part fixes the position of the optical fiber bundler on the optical transmission device and connects to the light guide. After receiving external light at the incident end, the light guide further transmits the light to its output end.

[0028] Specifically, the fiber optic bundle includes a fiber optic enclosure 2, at least one optical fiber, and a fixing bracket 3. The optical fiber portion is exposed (or completely enclosed within the fiber optic enclosure 2). When light from an external light source shines on the optical fiber, the light enters from the fiber's input end. The fiber optic enclosure 2 itself can be made of a rigid material (such as copper or other metals with high thermal conductivity). After the optical fiber is bundled within the enclosure, the position, direction of extension, and required length of the optical fiber are all determined by the fiber optic enclosure 2. Once the length, angle, and profile of the fiber optic enclosure 2 are determined, it is fixed to the fixing bracket 3.

[0029] The fixing part is connected to the fixing bracket 3, serving as a connecting part to fix the entire fiber optic bundle in a fixed position. Specifically, the fixing part includes a hollow bracket 4 and a fixing base 5 connected to each other. The hollow bracket 4 can be cylindrical, with one end connected to the fixing bracket 3, fixing the entire fiber optic bundle at one end of the hollow bracket 4 and facing outwards to receive light. The other end of the hollow bracket 4 extends away from the fiber optic bundle, with its interior hollowed out to form a cavity. Air can be filled into the cavity as a heat insulation medium, or the cavity can be vacuum-treated to keep the light-emitting end of the fiber optic bundle and the light-guiding part at a certain distance (i.e., not in contact), reducing the heat conduction capacity between the fiber optic bundle and the light-guiding part, making it difficult for heat from the light-guiding part to be conducted to the fiber optic bundle. The fixing base 5 is located at the other end of the fixing part. On the one hand, it can be used to connect with other external devices, thereby fixing the optical transmission equipment to other external devices or other locations; on the other hand, it also isolates the cavity from the outside, preventing heat from escaping. When light from an external light source shines on the input end of an optical fiber, the light will propagate within the fiber (usually through total internal reflection) until it reaches the output end. After exiting the output end, the light will enter the cavity and propagate in a straight line within the cavity.

[0030] At a lower level, the light guide is connected to the fixed base 5, which in turn fixes the position of the light guide. For example, one side of the fixed base 5 is connected to the hollow support 4, and the other side of the light guide is snapped onto the fixed base 5. The light guide includes a light guiding medium 6 located at the center, an insulating layer 7 wrapped around the light guiding medium 6, a light guiding shell 8 wrapped around the insulating layer 7, and a cover 9 wrapped around the light guiding shell 8. It is understood that the fixed base 5 is not sealed at the point where it snaps onto the light guide, and light emitted from the light-emitting end of the optical fiber will enter the light guiding medium 6 through the cavity (specifically, the light guiding medium 6 includes an incident end that receives incident light and an emitting end that emits outward light). The insulating layer 7 is included outside the light guiding medium 6. For example, the insulating layer 7 can be an air cladding. On the one hand, it forms a different medium interface between the sidewall of the light guiding medium 6 and the insulating layer 7, thereby achieving total internal reflection when light is transmitted within the light guiding medium 6 to the interface with the insulating layer 7, so that it only transmits within the light guiding medium 6. The light guide shell 8 is used to form the isolation layer 7. For example, a light guide body is taken and a groove is dug out on the inner side wall. The groove forms the isolation layer 7, and the two sides of the isolation layer 7 are the light guide medium 6 and the light guide shell 8, respectively. A cover 9 is set outside the light guide shell 8.

[0031] With the above configuration, an incident light enters from the optical fiber and exits, passes through the cavity and enters the light guide medium 6 from the incident end of the light guide medium 6, and forms total internal reflection at the junction of the light guide medium 6 and the insulating layer 7, and then exits from the exit end of the light guide medium 6, thus realizing the focusing and transmission of light.

[0032] In a preferred embodiment, the gap between the fiber optic encapsulation shell 2 and at least one optical fiber in the fiber optic bundle is filled with a light-transmitting adhesive to form a rod-shaped fiber optic rod. This serves two purposes: firstly, it completely secures the optical fiber within the fiber optic bundle, preventing light from flickering within the bundle even if the inner diameter of the bundle is larger than the optical fiber; secondly, the transparent adhesive allows leaked energy from the optical fiber to pass through and be dissipated by the heat-conducting shell, rather than accumulating at the optical fiber. The transparent adhesive includes, but is not limited to, epoxy resin, wax, rosin, and fir glue. The fiber optic encapsulation shell 2 is made of any one of metallic, polymeric, or nanomaterials. This material configuration allows heat to be dissipated, preventing heat accumulation at the optical fiber.

[0033] Optionally, considering that neither the optical fiber nor the transparent adhesive in the structure of the optical fiber encapsulation shell 2 can withstand high temperatures (for example, the transparent adhesive typically cannot exceed 150°C, and the acrylate used to prepare the optical fiber encapsulation shell 2 also cannot exceed 150°C), the optical fiber encapsulation shell 2 should be kept at a certain low temperature. Meanwhile, considering that the heat of the optical fiber encapsulation shell 2 mainly comes from light leakage, reflection from the incident end of the light guide medium 6, and thermal radiation from the temperature of the light guide medium 6 itself, this embodiment is configured with: a certain distance between the light-emitting end of the optical fiber encapsulation shell 2 and the light guide medium 6, combined with the length of the light guide medium 6 itself (for example, this length can be 1.5-2 times the distance between the light-emitting end of the optical fiber encapsulation shell 2 and the light guide medium 6), the radiation density is reduced by the distance between the optical fiber encapsulation shell 2 and the light guide medium 6, and the thermal radiation intensity of the light guide medium 6 is reduced by utilizing its poor thermal conductor properties and length, ultimately maintaining the low temperature of the optical fiber encapsulation shell 2.

[0034] Preferably or optionally, the fiber optic encapsulation shell 2 includes an inner shell and an outer shell. The outer shell is located around the inner shell, making the fiber optic encapsulation shell 2 also have two layers. The inner fiber optic encapsulation shell 2 is connected to the inner shell, and the outer fiber optic encapsulation shell 2 is connected to the outer shell. The inner shell is arranged with the center point of the fiber optic bundle as the center, and the inner shell is at an angle of 10°-20° to the vertical direction, so that the inner shell is dispersed away from the axis of the fiber optic bundle. The outer shell is arranged with the center point of the fiber optic bundle as the center, and the outer shell is at an angle of 20°-30° to the vertical direction, so that the outer shell is dispersed away from the axis of the fiber optic bundle. This distribution method allows the light transmitted through the fiber optic cable to be focused into a light spot when it enters the cavity. Specifically, the inner outer shell is rod-shaped, including a first fixed end and a second fixed end. The first fixed end is fixed to the fixed bracket 3, and the second fixed end extends in a direction away from the axis of the fixed bracket 3. The length of the optical fiber can also be set to be the same as or slightly smaller than the length of the inner outer shell, so that one end of the optical fiber is located at the first fixed end and the other end is located at the second fixed end. Furthermore, the horizontal distance from the first fixed end to the axis of the fixed bracket 3 is less than the horizontal distance from the second fixed end to the axis of the fixed bracket 3, causing the overall outline of the inner outer shell to diffuse away from the axis of the optical fiber bundle. In other words, it expands outward in a "radiating" manner with the axis of the optical fiber bundle as the center. Similarly, the outer outer shell includes a third fixed end and a fourth fixed end. The third fixed end is fixed to the fixed bracket 3, and the fourth fixed end extends in a direction away from the axis of the fixed bracket 3. The horizontal distance from the third fixed end to the axis of the fixed bracket 3 is less than the horizontal distance from the fourth fixed end to the axis of the fixed bracket 3, causing the outer outer shell to diffuse away from the axis of the optical fiber bundle, also in a "radiating" outward manner with the axis of the optical fiber bundle as the center.

[0035] Understandably, under different operating conditions, adjusting parameters such as the divergence angle, desired spot size and distance, number of fiber bundles, and cross-sectional area of ​​the fiber packaging shell 2 can achieve the maximum energy density per unit area. For example, using 11 fiber bundles with a cross-section of 7mm and a divergence angle of 52°, arranged in an inner layer of 3 and an outer layer of 8, with corresponding axial angles of 22.6° for the outer ring and 8.5° for the inner ring, a spot structure of 3cm in size can be obtained at the incident end of the light guide medium, thereby achieving the maximum energy density. Thus, on the one hand, the received illumination is range light, and on the other hand, the size of the focused spot is appropriate.

[0036] Understandably, the mounting bracket 3 itself is made of thermally conductive materials, such as metals like copper, aluminum, and stainless steel, or carbon-based non-metals, which conduct heat to the fiber optic encapsulation shell 2. When the heat generated by the fiber optic encapsulation shell 2 becomes too high, heat dissipation components, such as heat sink fins or heat pipes, can be added to the outside of the mounting bracket 3. The mounting bracket 3 also contains a temperature detection device 1, which extends deep into the mounting bracket 3 to accurately detect the actual temperature of the mounting bracket 3, allowing the user to adjust the overall system's operating status in real time.

[0037] In a preferred embodiment, a polishing device, such as a metallographic polishing machine, can be used to process the input and output ends of the optical fiber to obtain a smooth surface, thereby achieving high transmittance when light enters from the input end and exits from the output end, resulting in efficient light transmission. The polishing methods and equipment used for the optical fiber end faces described in this application are for reference only and should not be construed as limiting the scope of this application.

[0038] The hollow support 4 is connected below the fixed support 3, and its interior is a closed hollow space, thus forming a cavity. An observation window is provided on the outer wall of the hollow support 4. The observation window is made of a high-temperature resistant transparent material, such as quartz or transparent plastic, and its shape is not limited to round, square, or other shapes. It is used to observe the working status of the optical fiber encapsulation shell 2. In addition, the hollow support 4 can also be used to isolate the optical fiber encapsulation shell 2 and the light guiding medium 6 from contamination by moisture and dust.

[0039] The light guide medium 6 is a cylinder or frustum, with the diameter ratio of its incident end to its exit end between 1:1 and 2:1. When the diameter of the incident end is larger than that of the exit end, the light guide medium 6 can not only form a transmission path for light transmission but also further focus the light. The incident end and / or exit end of the light guide medium 6 have a coating to improve the light transmission efficiency and reduce losses.

[0040] Preferably or optionally, the light guide shell 8 is a centrally symmetrical three-dimensional shape with equal thickness everywhere, which facilitates its fabrication.

[0041] More preferably, the optical transmission device further includes a housing 11, which has an inner cavity, and the light guide is encapsulated in the inner cavity. The space between the light guide and the housing 11 forms a heat insulation layer 10. The heat insulation layer 10 can be filled with heat insulation material so that the heat energy of the light guide will not leak out to the housing 11 or the outside of the optical transmission device.

[0042] It should be noted that the embodiments of this utility model have better implementability and are not intended to limit this utility model in any way. Any person skilled in the art may use the above-disclosed technical content to change or modify it into equivalent effective embodiments. However, any modifications or equivalent changes and modifications made to the above embodiments based on the technical essence of this utility model without departing from the content of the technical solution of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. An optical transmission device, characterized in that, Optical transmission equipment includes: The fiber optic bundler includes a fiber optic encapsulation shell, at least one fiber optic cable, and a fixing bracket. The fiber optic encapsulation shell encapsulates the fiber optic cable into a bundle and fixes it to the fixing bracket. The fixing part, connected to the fixing bracket, includes a hollow bracket and a fixing base that are connected to each other, and the hollow bracket has a cavity inside; The light guide section, connected to the fixed base, includes a light guide medium located at the center, an insulating layer wrapped around the light guide medium, a light guide shell wrapped around the insulating layer, and a cover wrapped around the light guide shell. The light guide medium includes an incident end for receiving incident light and an exiting end for emitting outgoing light.

2. The optical transmission device as described in claim 1, characterized in that: The gap between the optical fiber packaging shell and at least one optical fiber in the optical fiber bundle section is filled with a light-transmitting adhesive to form a rod-shaped optical fiber rod. The fiber optic packaging shell is made of any one of the following materials: metal, polymer, or nanomaterial.

3. The optical transmission device as described in claim 1, characterized in that: The optical fiber encapsulation shell includes an inner shell and at least one outer shell, wherein the outer shell is located on the outer ring of the inner shell; The inner outer shell is arranged with the center point of the optical fiber bundle as the center, and the inner outer shell is at an angle of 10°-20° to the vertical direction; The outer shell is arranged with the center point of the optical fiber bundle as the center, and the outer shell is at an angle of 20°-30° to the vertical direction.

4. The optical transmission device as described in claim 3, characterized in that: The inner outer shell includes a first fixed end and a second fixed end. The first fixed end is fixed on the fixed bracket, and the second fixed end extends in a direction away from the axis of the fixed bracket. The horizontal distance from the first fixed end to the axis of the fixed bracket is less than the horizontal distance from the second fixed end to the axis of the fixed bracket, so that the inner outer shell diffuses away from the axis of the optical fiber bundle. The outer shell includes a third fixed end and a fourth fixed end. The third fixed end is fixed to the fixed bracket, and the fourth fixed end extends away from the axis of the fixed bracket. The horizontal distance from the third fixed end to the axis of the fixed bracket is less than the horizontal distance from the fourth fixed end to the axis of the fixed bracket, so that the outer shell diffuses away from the axis of the optical fiber bundle.

5. The optical transmission device as described in claim 1, characterized in that: The fixing bracket is made of thermally conductive material; the fixing bracket is externally equipped with heat dissipation components, which are heat dissipation fins or heat dissipation pipes. The fixed bracket is also equipped with a temperature detection device for detecting the temperature of the fixed bracket.

6. The optical transmission device as described in claim 1, characterized in that: The hollow support is equipped with an observation window.

7. The optical transmission device as described in claim 1, characterized in that: The light guiding medium is a cylinder or a frustum, and the diameter ratio of the incident end to the exit end is between 1:1 and 2:

1.

8. The optical transmission device as described in claim 1, characterized in that: The light guide medium has a coating at the incident end and / or the exit end. The light guiding medium is fixed on the light guiding shell, and at least one of the incident end and the exit end is connected to the light guiding shell.

9. The optical transmission device as described in claim 1, characterized in that: The light guide shell is a centrally symmetrical three-dimensional shape with a uniform thickness everywhere.

10. The optical transmission device as described in claim 1, characterized in that: The optical transmission device also includes a housing with an inner cavity, the light guide being placed inside the inner cavity, and a heat insulation layer being provided between the light guide and the inner wall of the housing.

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