CN113866900A - Multi-path optical fiber rotary connector - Google Patents
Multi-path optical fiber rotary connector Download PDFInfo
- Publication number
- CN113866900A CN113866900A CN202111323234.6A CN202111323234A CN113866900A CN 113866900 A CN113866900 A CN 113866900A CN 202111323234 A CN202111323234 A CN 202111323234A CN 113866900 A CN113866900 A CN 113866900A
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- China
- Prior art keywords
- prism
- end cover
- positioning structure
- rotary connector
- optical fiber
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3604—Rotary joints allowing relative rotational movement between opposing fibre or fibre bundle ends
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3616—Holders, macro size fixtures for mechanically holding or positioning fibres, e.g. on an optical bench
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3648—Supporting carriers of a microbench type, i.e. with micromachined additional mechanical structures
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3684—Mechanical coupling means for mounting fibres to supporting carriers characterised by the manufacturing process of surface profiling of the supporting carrier
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention belongs to the field of optical signal transmission, and particularly relates to a multi-path optical fiber rotary connector which comprises a dove prism and a prism sleeve, wherein the dove prism is accommodated and fixed in the prism sleeve; the dove prism comprises an incident surface, an emergent surface and a reflecting surface, and further comprises a positioning plane, wherein the positioning plane is connected between the incident surface and the emergent surface and is opposite to the reflecting surface; the prism sleeve comprises an inner surface, an inner plane is arranged on the inner surface, and the inner plane is attached to the positioning plane. The multi-path optical fiber rotary connector can effectively reduce the assembly difficulty and reduce the assembly steps. Through the cooperation of dove prism, prism sleeve, axle head end cover, the fixed end cover of collimater, the light swivelling joint ware that finally can realize exempting from the installation and transferring need not to consider installation and transferring equipment installation space, under the same clear aperture circumstances, the way number can be improved greatly.
Description
Technical Field
The invention belongs to the field of optical signal transmission, and particularly relates to a multi-path optical fiber rotary connector.
Background
The optical Fiber Rotary connector (FORJ) is also called optical Fiber slip ring, optical Fiber Rotary Joint, optical hinge, etc. and is used to solve the transmission problem of optical signal between opposite rotating parts, i.e. to ensure that the transmission of optical signal is not interrupted by rotation. Compared with the traditional electric connector, the optical fiber rotary connector has the following advantages: the light is used for signal transmission, so that the electromagnetic leakage is avoided, the confidentiality is good, and the electromagnetic interference is prevented; the transmission is contactless, no abrasion is caused, the service life is long, and 500 ten thousand revolutions can be achieved; the friction is avoided, and the device can be used in flammable and explosive environments; the transmission bandwidth is far greater than that of the electric connector, and the electric connector is matched with a wavelength division multiplexer for use, so that the bandwidth can be doubled; the allowed rotating speed is high and can reach ten thousand revolutions per minute at most. The optical fiber rotary connector can realize 360-degree rotary transmission of optical signals from the fixed part to the rotating part.
At present, the dove prism and the optical fiber collimator of the optical fiber rotary connector cannot directly position the optical axis of the dove prism and the optical fiber collimator through a mechanical shaft, so that the optical fiber rotary connector needs a set of complex assembling and adjusting system in the assembling process, the assembling and adjusting workload is large, and indexes are not easy to control. In order to solve the problem, the prior patent application with the patent publication number of CN111487726A discloses a miniaturized multi-path optical fiber rotary connector, which comprises a core part, a fixed end outgoing line assembly, a transmission mechanism and a prism assembly, wherein the core part comprises a rotary end outgoing line assembly, a fixed end outgoing line assembly, a transmission mechanism and a prism assembly; the rotating end outgoing line assembly and the fixed end outgoing line assembly are respectively arranged at two ends of the transmission mechanism, the transmission mechanism comprises an inner shaft, and the prism assembly is arranged in the inner shaft of the transmission mechanism; the prism assembly comprises a special-shaped dove prism and a prism sleeve, and the special-shaped dove prism is arranged in the prism sleeve; the special-shaped dove prism comprises an incident surface and an emergent surface which are opposite at two sides, the extension lines of the incident surface and the emergent surface form an included angle of 90 degrees, the bottom between the incident surface and the emergent surface is a horizontal refraction surface, the upper side of the refraction surface is a cylindrical non-working surface, the incident surface and the emergent surface which are light at two sides are working surfaces, the light is incident from the incident surface at one side, and the light is refracted at the refraction surface at the bottom and then is emitted from the emergent surface at the other opposite side; the cylindrical non-working surface of the special-shaped dove prism, the prism sleeve and the inner shaft are coaxial. According to the invention, the profile of the dove prism is improved, so that the special-shaped dove prism can realize the coincidence of the optical axis and the rotating shaft through mechanical positioning, and a dove prism assembling and adjusting system is not needed. However, the patent application of the invention still needs to adjust the position relationship between the dove prism and the prism sleeve, and the positions of the bearing end cover and the optical fiber collimator fixing end cover also need to be finely adjusted correspondingly.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a multi-path optical fiber rotary connector, which can avoid introducing a debugging system and avoid a debugging link of an optical fiber collimator by improving the structures of a dove prism, a prism sleeve, a bearing end cover and an optical fiber collimator fixing end cover.
The specific technical scheme of the invention is as follows:
a multi-path optical fiber rotary connector comprises a dove prism and a prism sleeve, wherein the dove prism is accommodated and fixed in the prism sleeve; the dove prism comprises an incident surface, an emergent surface and a reflecting surface, and further comprises a positioning plane, wherein the positioning plane is connected between the incident surface and the emergent surface and is opposite to the reflecting surface; the prism sleeve comprises an inner surface, an inner plane is arranged on the inner surface, and the inner plane is attached to the positioning plane.
Wherein the positioning plane is parallel to the reflecting surface.
The prism sleeve is sequentially provided with a feeding section, a matching section and a limiting section along the axial direction, the inner diameter of the feeding section is larger than that of the matching section, the inner diameter of the matching section is larger than that of the limiting section, the inner plane is arranged on the inner wall of the matching section, and the length of the matching section is smaller than that of the dove prism.
The multi-path optical fiber rotary connector further comprises a shaft end cover and a transmission mechanism, the prism sleeve and the transmission mechanism are relatively fixed, the shaft end cover is fixed at two ends of the transmission mechanism, and a plurality of waist-shaped screw mounting holes are formed in the shaft end cover corresponding to the transmission mechanism.
The multi-path optical fiber rotary connector further comprises a shaft end cover, a second positioning structure is arranged on the shaft end cover, the prism sleeve comprises an outer surface, a first positioning structure is arranged on the outer surface, and the first positioning structure is matched with the second positioning structure to fix the relative position of the shaft end cover and the prism sleeve.
The multi-path optical fiber rotary connector further comprises a collimator fixing end cover, a third positioning structure is arranged on the shaft end cover, a fourth positioning structure is arranged on the collimator fixing end cover, and the third positioning structure is matched with the fourth positioning structure, so that the relative position of the shaft end cover and the collimator fixing end cover is fixed.
The shaft end cover comprises a positioning end, the second positioning structure is arranged on the positioning end, the third positioning structure and the second positioning structure are shared, and the first positioning structure, the second positioning structure and the fourth positioning structure are all planes.
The collimator fixing end covers are provided with axial mounting holes, the mounting holes of the collimator fixing end covers at the two ends are rotationally symmetrical, and the fourth positioning structures of the collimator fixing end covers at the two ends are in mirror symmetry.
Advantageous effects
The multi-path optical fiber rotary connector can effectively reduce the assembly difficulty and reduce the assembly steps. Through the cooperation of dove prism, prism sleeve, axle head end cover, the fixed end cover of collimater, the light swivelling joint ware that finally can realize exempting from the installation and transferring need not to consider installation and transferring equipment installation space, under the same clear aperture circumstances, the way number can be improved greatly.
Drawings
Figure 1 is a schematic diagram of a multi-fiber rotary connector of the present invention,
figure 2 is a schematic view of a dove prism of the invention,
figure 3 is a top view of a dove prism of the invention,
figure 4 is a cross-sectional view of a dove prism of the invention,
figure 5 is a schematic view of the prism sleeve and dove prism of the invention in combination,
figure 6 is an axial cross-sectional view of a prism sleeve of the present invention,
figure 7 is a radial cross-sectional view of a prism sleeve of the present invention,
figure 8 is a schematic view of an end cap for a shaft of the present invention,
figure 9 is a schematic view of the mating of the end cap to the prism sleeve of the present invention,
figure 10 is a schematic view of the collimator mounting end cap of the present invention,
figure 11 is a schematic diagram of the collimator fixing end cap and dove prism of the present invention,
figure 12 is a schematic view of a fixed end cap blank of the present invention,
figure 13 is a schematic view of the process of the invention for fixing end cap blanks,
FIG. 14 is another schematic view of the process of securing end cap blanks according to the present invention.
Detailed Description
The multi-path optical fiber rotary connector comprises a dove prism 1, a prism sleeve 2, a shaft end cover 3 and a collimator fixing end cover 4, wherein the dove prism 1 is accommodated and fixed in the prism sleeve 2, the shaft end cover 3 is arranged at two ends of the prism sleeve 2, the collimator fixing end cover 4 is arranged at the outer side far away from the shaft end cover 3, and the prism sleeve 2, the shaft end cover 3 and the collimator fixing end cover 4 are coaxial; as shown in fig. 2, 3 and 4, the dove prism 1 comprises an incident surface 11, an emergent surface 12 and a reflecting surface 15 which are the same as CN111487726A, the incident surface 11 is perpendicular to the emergent surface 12, the normals of the planes of the incident surface 11, the emergent surface 12 and the reflecting surface 15 are located on the same plane, the dove prism 1 is characterized by further comprising a positioning plane 13, the positioning plane 13 is connected between the incident surface 11 and the emergent surface 12 and is opposite to the reflecting surface 15, the prism sleeve 2 comprises an inner surface 21 as shown in fig. 5 and 6, an inner plane 23 is arranged on the inner surface 21, the inner plane 23 is attached to the positioning plane 13, and the inner plane 23 limits the axial rotation of the dove prism 1.
Through improving dove prism 1, prism sleeve 2, increase locating plane 13 and interior plane 23 on prior art's basis, through locating plane 13 and interior plane 23 cooperation, the condition of dove prism 1 in prism sleeve 2 internal rotation among the prior art can not appear for the position of dove prism 1 and prism sleeve 2 is relatively fixed, thereby has reduced the link of adjustment dove prism position appearance in prism sleeve 2, has improved assembly efficiency. Secondly, the locating flat 13 is less likely to be damaged by stress during assembly and is easier to machine than other forms.
Wherein preferably, the positioning plane 13 is parallel to the reflection plane 15.
Specifically, the prism sleeve 2 is sequentially distributed with a feeding section 25, a matching section 26 and a limiting section 27 along the axial direction, the inner diameter of the feeding section 25 is larger than that of the matching section 26, the inner diameter of the matching section 26 is larger than that of the limiting section 27, the inner plane 23 is arranged on the inner wall of the matching section 26, the shape of the matching section 26 is matched with that of the dove prism 1, and the length of the matching section 26 is smaller than that of the dove prism 1. With the arrangement, in the process of feeding the dove prism 1 into the prism sleeve 2, as the size of the feeding section 25 is larger than that of the dove prism 1, excessive surface contact cannot be generated, and damage to the dove prism 1 due to stress is prevented, after the dove prism 1 enters the matching section 26, as the size of the dove prism 1 is larger than the limiting section 27, the dove prism 1 is limited in the matching section 26, and as the dove prism 1 is longer than the matching section 26, glue can be sealed on the dove prism 1 in the feeding section 25, so that the dove prism 1 is fixed in the prism sleeve 2, and the function of the dove prism 1 is not influenced.
As shown in fig. 1, the multi-path optical fiber rotary connector further includes a transmission mechanism 5 and an inner shaft 6, the inner shaft 6 is fixed relative to the transmission mechanism 5, the outer contour of the prism sleeve 2 matches with the inner contour of the inner shaft 6, so as to realize radial fixation of the prism sleeve 2, and the shaft end cap 3 is fixed on the transmission mechanism 5 through screws. Preferably, as shown in fig. 8, a plurality of waist-shaped screw mounting holes 34 are provided on the fixing surface 32 of the shaft end cap 3 corresponding to the transmission mechanism 5, so that when the relative position of the prism sleeve 2 and the transmission mechanism 5 deviates, the shaft end cap 3 fixed relative to the prism sleeve 2 can be fixed with the transmission mechanism 5 by screws at the adjusted position.
Preferably, the prism sleeve 2 includes an outer surface 22, a first positioning structure 24 is disposed on the outer surface 22, as shown in fig. 8, the shaft end cover 3 includes a positioning end 31, the positioning end 31 extends axially, the shaft end cover 3 is assisted to be positioned in cooperation with the prism sleeve 2, and a second positioning structure 33 is disposed on the positioning end 31. The first positioning structure 24 and the second positioning structure 33 are matched to fix the relative position of the shaft end cover 3 and the prism sleeve 2. Specifically, as shown in fig. 6, the first positioning structure 24 may be a plane, as shown in fig. 8, the second positioning structure 33 is also a plane, and the first positioning structure 24 is parallel to the second positioning structure 33, as shown in fig. 9, in the present technical solution, when in use, the square limiting block 27 is embedded between the first positioning structure 24 and the second positioning structure 33, so as to ensure that the positions of the first positioning structure 24 and the second positioning structure 33 are fixed, that is, the positions of the shaft end cap 3 and the prism sleeve 2 are fixed.
Further, a third positioning structure may be further disposed on the shaft end cover 3, as shown in fig. 10, a fourth positioning structure 41 is disposed on the collimator fixing end cover 4, and the third positioning structure is matched with the fourth positioning structure 41, so that the relative position between the shaft end cover 3 and the collimator fixing end cover 4 is fixed. For example, in the present embodiment, the third positioning structure and the second positioning structure 33 share a common plane, the fourth positioning structure 41 is a plane parallel to the second positioning structure 33, the fourth positioning structure 41 is matched with the third positioning structure, and the relative positions of the collimator fixing end cap 4 and the shaft end cap 3 are fixed. Through setting up first location structure 24, second location structure 33, third location structure and fourth location structure 41 for prism sleeve 2, axle head end cover 3, 4 three's of collimator fixed end cover position relatively fixed, thereby avoided having adjusted among the prior art prism sleeve 2 still need adjust the step of collimator fixed end cover 4 relative position after that, through the number of times that reduces the assembly, thereby reduced the error in the assembly regulation, and improved assembly efficiency.
It should be noted that the mounting hole provided at the center of the collimator fixing end cap 4 is difficult to be precisely arranged symmetrically about the axis thereof, as shown in fig. 11, which discloses the mirror image principle that the position of the mounting hole of the collimator fixing end cap is not symmetrical with respect to the central axis through the dove prism, and at this time, the mounting holes of the collimator fixing end caps 4 at the left and right ends should be precisely rotationally symmetrical. Therefore, the mounting holes of the collimator fixing end covers 4 at the two ends are preferably rotationally symmetrical, and the fourth positioning structures 41 of the collimator fixing end covers 4 at the two ends are mirror-symmetrical, so that the collimator fixing end covers 4 are mounted in place, and after the collimator fixing end covers are fixed relative to the shaft end cover 3 and the prism sleeve 2, the positions of the collimator fixing end covers 4 do not need to be adjusted, and the assembly efficiency is improved.
In order to ensure that the collimator fixing end covers 4 at two ends can be absolutely rotationally symmetrical, the invention also provides a machining method of the collimator fixing end covers 4. Firstly, a fixed end cover blank is prepared, wherein the fixed end cover blank comprises a plurality of solid collimator fixed end cover preparation parts which are repeated continuously. For example, as shown in fig. 12, the fixed end cap blank includes two identical collimator fixed end caps arranged in series. Then, a plurality of mounting holes parallel to the axis of the fixed end cover blank are arranged on the fixed end cover blank in a penetrating mode. As shown in fig. 13, the number of the mounting holes in this embodiment is two, and is not symmetrical about the axis. Thereafter, as shown in fig. 14, a fourth positioning structure 41 is machined on each collimator-fixing end preparation, so that the fourth positioning structure 41 on each collimator-fixing end cover preparation is mirror-symmetrical after being rotated by 180 °. And finally, cutting along the contour of the prepared part of the collimator fixing end cover to obtain the finished collimator fixing end cover.
If according to the processing mode of the prior art, two collimator fixed end covers with installation holes which are exactly rotationally symmetrical need to be processed, but the processing is very difficult because the angle of the installation holes and the distance between the installation holes and the axis are not special. However, if the manufacturing method of the collimator fixing end cover 4 of the invention is used, the processed fixing end cover blanks are cut into two, the two cut collimator fixing end covers are necessarily rotationally symmetrical, the situation of mismatching cannot occur, the processing difficulty of the collimator fixing end covers is greatly reduced, and the processing steps are reduced.
Claims (8)
1. A multi-path optical fiber rotary connector comprises a dove prism (1) and a prism sleeve (2), wherein the dove prism (1) is accommodated and fixed in the prism sleeve (2); the dove prism (1) comprises an incident surface (11), an emergent surface (12) and a reflecting surface (15), and is characterized in that the dove prism (1) further comprises a positioning plane (13), and the positioning plane (13) is connected between the incident surface (11) and the emergent surface (12) and is opposite to the reflecting surface (15); prism sleeve (2) include internal surface (21), be provided with interior plane (23) on internal surface (21), interior plane (23) and location plane (13) laminating.
2. The multi-fiber rotary connector of claim 1, wherein the orientation flat (13) is parallel to the reflective surface (15).
3. The multi-path optical fiber rotary connector according to claim 1, wherein the prism sleeve (2) is provided with a feeding section (25), a matching section (26) and a limiting section (27) in sequence along the axial direction of the prism sleeve, the inner diameter of the feeding section (25) is larger than that of the matching section (26), the inner diameter of the matching section (26) is larger than that of the limiting section (27), the inner plane (23) is arranged on the inner wall of the matching section (26), and the length of the matching section (26) is smaller than that of the dove prism (1).
4. The multi-path optical fiber rotary connector according to claim 1, further comprising a shaft end cover (3) and a transmission mechanism (5), wherein the prism sleeve (2) and the transmission mechanism (5) are relatively fixed, the shaft end cover (3) is fixed at two ends of the transmission mechanism (5), and a plurality of waist-shaped screw mounting holes (34) are formed in the shaft end cover (3) corresponding to the transmission mechanism (5).
5. The multi-path optical fiber rotary connector according to claim 1, further comprising a shaft end cover (3), wherein a second positioning structure (33) is disposed on the shaft end cover (3), the prism sleeve (2) comprises an outer surface (22), a first positioning structure (24) is disposed on the outer surface (22), and the first positioning structure (24) is engaged with the second positioning structure (33) to fix a relative position between the shaft end cover (3) and the prism sleeve (2).
6. The multi-path optical fiber rotary connector according to claim 1 or 5, further comprising a collimator fixing end cover (4), wherein a third positioning structure is disposed on the end cover (3), and a fourth positioning structure (41) is disposed on the collimator fixing end cover (4), and the third positioning structure and the fourth positioning structure (41) are matched, so that the relative positions of the end cover (3) and the collimator fixing end cover (4) are fixed.
7. The multi-fiber rotary connector according to claim 6, wherein the end cap (3) includes a positioning end (31), the second positioning structure (33) is disposed on the positioning end (31), the third positioning structure is common to the second positioning structure (33), and the first positioning structure (24), the second positioning structure (33), and the fourth positioning structure (41) are planar.
8. The multi-path optical fiber rotary connector according to claim 6, wherein the collimator fixing end caps (4) are provided with axial mounting holes, the mounting holes of the collimator fixing end caps (4) at two ends are rotationally symmetric, and the fourth positioning structures (41) of the collimator fixing end caps (4) at two ends are mirror symmetric.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110464476 | 2021-04-28 | ||
| CN2021104644760 | 2021-04-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113866900A true CN113866900A (en) | 2021-12-31 |
| CN113866900B CN113866900B (en) | 2023-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111323234.6A Active CN113866900B (en) | 2021-04-28 | 2021-11-04 | Multi-path optical fiber rotary connector |
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| CN (1) | CN113866900B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050036735A1 (en) * | 2003-08-12 | 2005-02-17 | Litton Systems, Inc. | Fiber optic rotary joint and associated alignment method |
| US20070019908A1 (en) * | 2005-07-22 | 2007-01-25 | Focal Technologies Corporation | Fiber optic rotary joint with de-rotating prism |
| CN101105557A (en) * | 2006-06-13 | 2008-01-16 | 泛达公司 | Reversible fiber optic connector |
| CN101446670A (en) * | 2007-11-23 | 2009-06-03 | 塔莱斯公司 | Very high quality channel for multipathway optical rotary joints |
| CN206038962U (en) * | 2016-08-30 | 2017-03-22 | 中国电子科技集团公司第八研究所 | Multi -channel optical fiber swivelling joint ware |
| EP3540486A1 (en) * | 2018-03-16 | 2019-09-18 | Schleifring GmbH | Compact multichannel optical rotary joint |
| CN111487726A (en) * | 2020-05-29 | 2020-08-04 | 中国电子科技集团公司第十四研究所 | Miniaturized multichannel optical fiber rotary connector |
-
2021
- 2021-11-04 CN CN202111323234.6A patent/CN113866900B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050036735A1 (en) * | 2003-08-12 | 2005-02-17 | Litton Systems, Inc. | Fiber optic rotary joint and associated alignment method |
| US20070019908A1 (en) * | 2005-07-22 | 2007-01-25 | Focal Technologies Corporation | Fiber optic rotary joint with de-rotating prism |
| CN101105557A (en) * | 2006-06-13 | 2008-01-16 | 泛达公司 | Reversible fiber optic connector |
| CN101446670A (en) * | 2007-11-23 | 2009-06-03 | 塔莱斯公司 | Very high quality channel for multipathway optical rotary joints |
| CN206038962U (en) * | 2016-08-30 | 2017-03-22 | 中国电子科技集团公司第八研究所 | Multi -channel optical fiber swivelling joint ware |
| EP3540486A1 (en) * | 2018-03-16 | 2019-09-18 | Schleifring GmbH | Compact multichannel optical rotary joint |
| CN111487726A (en) * | 2020-05-29 | 2020-08-04 | 中国电子科技集团公司第十四研究所 | Miniaturized multichannel optical fiber rotary connector |
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| 王芳: "单模24芯光纤旋转连接器的研制", 《光纤与电缆及其应用技术》 * |
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| CN113866900B (en) | 2023-02-28 |
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