Miniature two-path optical fiber slip ring

Abstract

The utility model relates to the technical field of optical fiber communication, and discloses a miniature two-path optical fiber slip ring, which realizes collimation coupling of light beams through butt joint of a ceramic ferrule with an optical fiber and a lens, realizes coaxial transmission of two paths of optical fibers through a glass ferrule with a miniature lens optical fiber, and realizes spatial optical path transmission of a product. The transmission efficiency is effectively improved, the manufacturing cost of the two-path optical fiber slip ring is reduced, miniaturization is facilitated, and practical application is facilitated. According to the utility model, effective, continuous and bidirectional optical coupling of the two optical fiber channels on the same rotatable axis can be realized, and miniaturization and low cost of the two optical fiber slip rings can be effectively realized.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber communication, in particular to a miniature two-way optical fiber slip ring. Background Art

[0002] A two-way fiber optic slip ring is a 360-degree, unrestricted rotation device used for optical communications. Its primary function is to ensure signal transmission without interruption, with the two optical fiber channels aligned along the same rotational axis. Various types of fiber optic rotary joints exist, but they do not address the problem of signal transmission on a dual-channel coaxial line. Furthermore, existing multi-way fiber optic slip rings are complex and require significant space, making them inconvenient to install in smaller spaces and resulting in high overall design costs. Utility Model Content

[0003] (1) Technical problems solved

[0004] In response to the shortcomings of the existing technology, the utility model provides a miniature two-way fiber optic slip ring, which solves the problem that the existing fiber optic rotary joint cannot effectively solve the signal transmission on the dual-channel coaxial line, and the multi-way fiber optic slip ring structure has a relatively complex overall design, which is inconvenient to achieve miniaturization and low cost.

[0005] (2) Technical solution

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A miniature two-way optical fiber slip ring comprises a stator part and a rotor part. Two optical paths are provided in the inner cavities of the stator part and the rotor part. The two optical paths transmit optical signals along the same axis.

[0008] Preferably, the stator portion includes a first shell and a ceramic sleeve fixedly arranged in the inner cavity of the first shell, a first precision ceramic tube fixedly arranged in the inner cavity of the ceramic sleeve, a first ceramic ferrule and a first glass ferrule are slidably connected to the inner cavity of the first precision ceramic tube, a lens is arranged at one end of the first ceramic ferrule close to the first glass ferrule, a first optical fiber is arranged in the inner cavity of the first ceramic ferrule, and a second optical fiber is arranged in the inner cavity of the first glass ferrule, and a first tail handle and a first optical cable sheath matching the first precision ceramic tube are arranged at one end of the first shell.

[0009] Preferably, a flange is fixedly connected to the first shell, and the flange is used to install and fix the entire stator part. A limiting ring for limiting and fixing the first tail handle is arranged in the inner cavity of the first shell.

[0010] Preferably, the rotor portion includes a second shell, which is rotatably connected to the inner cavity wall of the first shell through a bearing, a second optical cable sheath is provided at one end of the second shell away from the first shell through a second tail handle, a second precision ceramic tube is movably inserted into the inner cavity of the second shell, a second ceramic ferrule and a second glass ferrule are movably inserted into the inner cavity of the second precision ceramic tube in turn, a third optical fiber is fixedly connected to the inner cavity of the second ceramic ferrule, a fourth optical fiber is arranged in the inner cavity of the second glass ferrule, and a through hole is provided at one end of the second shell away from the first shell.

[0011] Preferably, the first precision ceramic tube and the second precision ceramic tube are both provided with a waist hole, the first ceramic ferrule and the first glass ferrule, the second ceramic ferrule and the second glass ferrule are all arranged on both sides of the waist hole, and the end of the lens close to the ceramic ferrule is concave, and the end close to the glass ferrule is convex.

[0012] Preferably, both ends of the second optical fiber and the fourth optical fiber are fixedly connected with micro lenses for collimating the optical signals entering the second optical fiber and the fourth optical fiber.

[0013] (3) Beneficial effects

[0014] The utility model has the following beneficial effects:

[0015] This miniature two-way fiber optic slip ring achieves collimated coupling of light beams by docking a ceramic ferrule with optical fiber and a lens, realizes coaxial transmission of two optical fibers through a glass ferrule with a micro-lens optical fiber, and realizes spatial optical path transmission of the product, effectively improving transmission efficiency and reducing the manufacturing cost of the two-way fiber optic slip ring, which is conducive to miniaturization and convenient for practical application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the AA cutaway structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the component disassembly structure of the utility model.

[0019] In the figure: 1. first shell; 11. flange; 12. ceramic sleeve; 13. first precision ceramic tube; 14. limiting ring; 15. first tail handle; 16. first cable sheath; 17. first ceramic ferrule; 18. first optical fiber; 19. first glass ferrule; 110. second optical fiber; 2. second shell; 21. second precision ceramic tube; 22. second tail handle; 23. second cable sheath; 24. second ceramic ferrule; 25. third optical fiber; 26. second glass ferrule; 27. fourth optical fiber; 3. lens; 4. waist hole; 5. bearing. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In the present invention, the precision in the precision ceramic tube refers to that the roughness level of the ceramic tube is higher than that of the ceramic sleeve. The specific roughness level is determined according to the application requirements. The word "precision" does not limit the ceramic material itself.

[0022] See also Figure 1 The utility model provides a technical solution: a miniature two-way optical fiber slip ring, comprising a stator part and a rotor part, wherein the inner cavities of the stator part and the rotor part are provided with two optical paths, and the two optical paths transmit along the same axis when transmitting optical signals.

[0023] The utility model realizes collimated coupling of light beams by docking a ceramic ferrule with optical fiber and lens 3, realizes coaxial transmission of two optical fibers through a glass ferrule with optical fiber of micro lens 3, and realizes spatial optical path transmission of the product, effectively improving transmission efficiency and reducing manufacturing cost of two-path optical fiber slip ring, which is conducive to miniaturization and convenient for practical application.

[0024] In this embodiment, the stator portion includes a first shell 1 and a ceramic sleeve 12 fixedly arranged in the inner cavity of the first shell 1. A first precision ceramic tube 13 is fixedly arranged in the inner cavity of the ceramic sleeve 12. A first ceramic ferrule 17 and a first glass ferrule 19 are slidably connected to the inner cavity of the first precision ceramic tube 13. A lens 3 is arranged at one end of the first ceramic ferrule 17 close to the first glass ferrule 19. A first optical fiber 18 is arranged in the inner cavity of the first ceramic ferrule, and a second optical fiber 110 is arranged in the inner cavity of the first glass ferrule 19. One end of the first shell 1 is respectively arranged with a first tail handle 15 and a first optical cable sheath 16 matching the first precision ceramic tube 13.

[0025] Reference Figure 1 and 2 As shown, in this embodiment, a flange 11 is fixedly connected to the first housing 1, which is used to mount and secure the entire stator. A retaining ring 14 is arranged within the interior of the first housing 1 to limit and secure the first tail handle 15. The retaining ring 14 can limit and secure the installation position of the first tail handle 15, ensuring the stable installation of the first tail handle 15 and the first cable sheath 16 with the first housing 1.

[0026] Reference Figure 2 As shown, in this embodiment, the rotor portion includes a second housing 2, which is rotatably connected to the inner wall of the first housing 1 via a bearing 5. A second cable sheath 23 is provided at the end of the second housing 2 away from the first housing 1 via a second tail handle 22. A second precision ceramic tube 21 is movably inserted into the inner cavity of the second housing 2. A second ceramic ferrule 24 and a second glass ferrule 26 are movably inserted into the inner cavity of the second precision ceramic tube 21. A third optical fiber 25 is fixedly connected to the inner cavity of the second ceramic ferrule 24, and a fourth optical fiber 27 is arranged in the inner cavity of the second glass ferrule 26. A through hole is provided at the end of the second housing 2 away from the first housing 1. By utilizing the sliding friction between the precision ceramic sleeve 12 and the ceramic sleeve, the ferrules with optical fibers in the stator and rotor portions can be quickly installed. This simple structure enables rapid product installation and facilitates rapid production.

[0027] Reference Figure 2 As shown, in this embodiment, both the first precision ceramic tube 13 and the second precision ceramic tube 21 are provided with a waist hole 4. The first ceramic ferrule 17 and the first glass ferrule 19, as well as the second ceramic ferrule 24 and the second glass ferrule 26, are arranged on either side of the waist hole 4. The end of the lens 3 closest to the ceramic ferrule is concave, while the end closest to the glass ferrule is convex. The waist hole 4 allows the light from one end of the second optical fiber 110 and the fourth optical fiber 27 to be reflected by the convex surface of the lens 3, exit through the waist hole 4, and then pass through the gap between the outer shell and the precision ceramic tube, and finally exit the cable sheath.

[0028] Reference Figure 2As shown, in this embodiment, microlenses 3 are fixedly connected to both ends of the second optical fiber 110 and the fourth optical fiber 27 to collimate the optical signal entering the second optical fiber 110 and the fourth optical fiber 27. The principle of the entire optical path is to connect the ceramic ferrule and the lens 3 to achieve collimated coupling of the light beam, realize two-way optical fiber transmission through the glass ferrule, and realize the spatial optical path transmission of the product. Among them, optical path one: the second optical fiber 110 and the fourth optical fiber 27 are optical fibers with a microlens 3 structure, and the optical path is transmitted through the first glass core 19 and the second glass core 26, so that the distance between the two glass cores is very small. The light path emitted from one end of the second optical fiber 110 passes through the waist-shaped hole in the middle of the first precision ceramic tube 12, and then passes through the gap between the first shell 1 and the first precision ceramic tube 12 and then passes through the first optical cable sheath 16; the light path emitted from the fourth optical fiber 27 passes through the waist-shaped hole in the middle of the second precision ceramic sleeve 12, passes through the through hole at one end of the second shell 2, and then passes through the second optical cable sheath 23; Optical path two: the first optical fiber 18 and the third optical fiber 25 pass through the ceramic core and then through the lens 3 to transmit the optical path. Because the light spot coming out of the lens 3 is large, and the diameters of the second optical fiber 110 and the fourth optical fiber 27 are small, they have little effect on the transmission of this optical path, and thus the optical path can pass through one end of the first optical fiber 18 or the second optical fiber 110 and pass through the optical cable sheath.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A miniature two-way optical fiber slip ring, comprising a stator portion and a rotor portion, characterized in that: The stator part and the rotor part are provided with two optical paths in the inner cavity, and the two optical paths transmit along the same axis when transmitting optical signals; the stator part includes a first shell and a ceramic sleeve fixedly provided in the inner cavity of the first shell, a first precision ceramic tube is fixedly provided in the inner cavity of the ceramic sleeve, a first ceramic ferrule and a first glass ferrule are respectively slidably connected in the inner cavity of the first precision ceramic tube, a lens is arranged at one end of the first ceramic ferrule close to the first glass ferrule, a first optical fiber is arranged in the inner cavity of the first ceramic ferrule, a second optical fiber is arranged in the inner cavity of the first glass ferrule, and a first tail handle and a first optical cable guard matching the first precision ceramic tube are respectively arranged at one end of the first shell. The rotor portion includes a second shell, which is rotatably connected to the inner cavity wall of the first shell through a bearing, a second optical cable sheath is provided at one end of the second shell away from the first shell through a second tail handle, a second precision ceramic tube is movably inserted into the inner cavity of the second shell, a second ceramic ferrule and a second glass ferrule are movably inserted into the inner cavity of the second precision ceramic tube in sequence, a third optical fiber is fixedly connected to the inner cavity of the second ceramic ferrule, and a fourth optical fiber is arranged in the inner cavity of the second glass ferrule, and a through hole is provided at one end of the second shell away from the first shell; micro lenses are fixedly connected to both ends of the second optical fiber and the fourth optical fiber for collimating the optical signals entering the second optical fiber and the fourth optical fiber.

2. The miniature two-way optical fiber slip ring according to claim 1, characterized in that: A flange is fixedly connected to the first shell, and the flange is used to install and fix the entire stator part. A limiting ring for limiting and fixing the first tail handle is arranged in the inner cavity of the first shell.

3. The miniature two-way optical fiber slip ring according to claim 1, characterized in that: The first precision ceramic tube and the second precision ceramic tube are both provided with waist holes, the first ceramic ferrule and the first glass ferrule, the second ceramic ferrule and the second glass ferrule are all arranged on both sides of the waist holes, and the end of the lens close to the ceramic ferrule is concave, and the end close to the glass ferrule is convex.

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