WO2016121059A1

WO2016121059A1 - Optical interconnection device

Info

Publication number: WO2016121059A1
Application number: PCT/JP2015/052555
Authority: WO
Inventors: 福井　一夫; 昭男出居; 孝之尾野; 満高平; 暁後藤; 輝副田; 加藤　誠司
Original assignee: 株式会社日立製作所
Priority date: 2015-01-29
Filing date: 2015-01-29
Publication date: 2016-08-04

Abstract

An optical interconnection device comprises an optical plane having a main plane, a sub-plane, a first optical connector, and an optical fiber. At least part of the sub-plane overlaps the main plane in plan view. A gap is provided between one surface of the main plane and one surface of the sub-plane, the one surface of the main plane facing the sub-plane and the one surface of the sub-plane facing the one surface of the main plane. The first optical connector is disposed in a first opening provided in a predetermined position of the sub-plane. The optical fiber joined to the first optical connector is drawn into a housing space formed by the gap between the one surface of the main plane and the one surface of the sub-plane through the first opening provided in the sub-plane.

Description

Optical wiring device

The present invention relates to the technology of an optical wiring device.

The amount of information distributed through the communication network is increasing due to the broadband communication network. For this reason, improvement of the processing speed in information devices, such as a router apparatus and a server apparatus, is calculated | required. Here, one of the factors hindering the improvement of the processing speed in the information equipment is the limit of the transmission speed of the copper wiring in the electric board constituting the information equipment.

Therefore, in Patent Document 1, communication between print boards in an information device is performed using an optical signal. In optical interconnection within information equipment, multiple printed boards such as signal I / O boards and switch boards are inserted at right angles to the main surface of the optical backplane with optical fibers (optical wiring) laid. Is done. The electrical signal on the print board is converted into an optical signal by the photoelectric conversion module and sent to the optical backplane. The sent optical signal propagates through the optical backplane, is converted again to an electrical signal, and is sent to another print board.

One way to connect multiple printed boards through optical fibers is midplane connection. In the conventional midplane connection, optical connectors are arranged on one side and the other side of a midplane which is a kind of substrate. In the midplane, the optical connector on one side and the optical connector on the other side are optically connected by an optical fiber. A plurality of print boards are respectively connected to the plurality of optical connectors on one side of the midplane, and a plurality of print boards are also connected to the plurality of optical connectors on the other side of the midplane. As a result, the print board connected to the optical connector on one side of the midplane and the print board connected to the optical connector on the other side of the midplane can communicate via the optical fiber of the midplane.

JP 2007-104487 A

In the conventional midplane connection as described above, sufficient space is required around the midplane to route the optical fiber connecting the optical connector on one side of the midplane and the optical connector on the other side. Become. Conventionally, an optical fiber bonded to an optical connector arranged on one side of the midplane is drawn out to the other side of the midplane through a through hole provided behind the optical connector, and this time through another through hole. Pulled out to one side of the midplane. Then, the optical fiber drawn to one side of the midplane is then joined to the optical connector through a through hole behind the optical connector arranged on the other side of the midplane. Thus, in order to connect two optical connectors with an optical fiber in the conventional midplane, three through holes are required in the midplane. For example, since the optical fiber needs to be used with a predetermined allowable bending radius or more, the optical fiber connecting the optical connectors is large so as to rise from the midplane on one side and the other side of the midplane. It needs to be wired to draw an arc. That is, a sufficient space for bending the optical fiber at a predetermined allowable bending radius or more is required on both the one surface side and the other surface side of the midplane. This hinders downsizing of the optical wiring device.

An object of the present invention is to reduce the size of an optical wiring device.

The optical wiring device according to an embodiment includes an optical plane. The optical plane includes a main plane, a subplane, a first optical connector, and an optical fiber. At least a part of the sub-plane overlaps with the main plane in plan view, and there is a gap between one surface of the main plane facing the sub-plane and one surface of the sub-plane facing one surface of the main plane. A first optical connector is disposed in a first opening provided at a predetermined position of the sub-plane, and an optical fiber joined to the first optical connector passes through the first opening provided in the sub-plane through the first opening of the main plane. It is drawn into the accommodation space formed by the gap between one surface and one surface of the sub-plane.

According to the present invention, the optical plane on which the optical connector and the optical fiber are arranged can be reduced in size.

It is a perspective view which shows the structural example of the optical wiring apparatus which concerns on one Embodiment. It is a side view which shows the structural example of an optical wiring apparatus. It is a front view which shows the example of a connection structure of the optical fiber in an optical wiring apparatus. It is a front view which shows the structural example of an optical plane. It is a side view (sectional view) showing a configuration example of an optical plane. It is a perspective view which shows the structural example of an optical plane.

Hereinafter, an embodiment of an optical wiring device will be described with reference to the drawings. In the drawings used in the following description, in order to make the characteristics of the present invention easier to understand, there is a case where a main part is shown in an enlarged manner for the sake of convenience, and the dimensional ratio of each component is actually the same. Not necessarily.

FIG. 1 is a perspective view showing a configuration example of an optical wiring device. FIG. 2 is a side view (sectional view) showing a configuration example of the optical wiring device.

The optical wiring device 10 includes a frame 11 that houses a plurality of circuit boards (printed boards) 22 and 23 and an optical plane 31. FIG. 1 shows a state in which a part of the outer wall of the frame 11 is removed. The frame 11 may be a rectangular tube having a hollow inside. The frame 11 may be a part of a rack in which a large number of optical wiring devices 10 are stacked and accommodated. The frame 11 may be formed of a metal plate.

The optical plane 31 has a main plane 32 and a sub-plane 33. The main plane 32 may be composed of an insulating plate member, an electric circuit board and a sheet metal, or a combination thereof. The optical plane 31 may be disposed in the center portion of the frame 11 so as to be parallel to the opening surfaces on both sides of the rectangular tube-shaped frame 11. That is, the optical plane 31 may be disposed at a position that substantially bisects the internal space of the frame 11. The optical plane 31 arranged in this way may be called a midplane. In the following description, of the internal space of the frame 11, the space extending to the one surface (one main surface) 32 a side of the main plane 32 is the first space E 1 and the other surface (the other main surface) 32 b side of the main plane 32. The space that spreads out is sometimes referred to as a second space E2.

A sub-plane 33 is attached to the one surface 32 a side of the main plane 32. The sub-plane 33 may be arranged so that at least a part of the sub-plane 33 overlaps the one surface 32a of the main plane 32 when viewed from the one surface 32a side of the main plane 32. The sub-plane 33 may be arranged such that the other surface 33 b (see FIG. 4) facing the one surface 32 a of the main plane 32 is parallel to the one surface 32 a of the main plane 32. The other surface 33b of the sub plane 33 may be smaller than the one surface 32a of the main plane 32.

The first optical connector 35 may be attached to one surface 33a of the subplane 33. The 1st optical connector 35 is attached so that it may fit with the 2nd optical connector 24 which the 1st circuit board 22 mentioned later has. A through hole 36 for drawing the optical fiber 42 bonded to the first optical connector 35 toward the other surface 33b of the subplane 33 may be formed in a portion of the subplane 33 to which the first optical connector 35 is attached. The through hole 36 may be formed so that the first optical connector 35 is fitted into the sub-plane 33.

The sub-plane 33 may be attached to the main plane 32 by a single or a plurality of legs 34 connecting the other surface 33b and the one surface 32a of the main plane 32. A space (gap) extending at a predetermined interval t is formed between the one surface 32 a of the main plane 32 and the other surface 33 b of the sub-plane 33 by the length of the leg portion 34. This space is called an accommodation space. An optical fiber 42 described later is accommodated in this accommodation space. The minimum value of the predetermined interval t may be calculated based on the allowable bending radius of the optical fiber 42 drawn into the accommodation space. This is because if the interval t is too narrow, the optical fiber 42 drawn into the accommodation space will be bent smaller than the allowable bending radius. 1 to 3, the optical fiber 42 is represented by a single solid line, but may actually be a plurality of optical fiber strands or a bundle of a plurality of optical fiber strands. The optical fiber may be a bundle of 24 or 48 optical fibers. The number of the leg portions 34 may be any number as long as a predetermined interval t can be secured between the main plane 32 and the sub plane 33.

A peripheral wall 49 that forms a predetermined interval t may be provided between the other surface 33 b of the sub-plane 33 and the one surface 32 a of the main plane 32. The subplane 33 may be fixed to the main plane 32 by the peripheral wall 49 instead of the leg portion 34. The peripheral wall 49 may be formed over the entire periphery of the sub-plane 33, or may be formed only on a part of the periphery of the sub-plane 33. An opening for drawing out the optical fiber 42 from the inside of the housing space to the outside of the housing space may be provided in a part of the peripheral wall 49. The optical fiber 42 drawn out of the accommodation space from the opening may be joined to a third optical connector 38 described later. The optical fiber 42 may be joined to the third optical connector 38 through a predetermined conduit provided outside the accommodation space of the one surface 32 a of the main plane 32. The predetermined conduit may be formed by the side wall 70 and the top wall 50. The side wall 70 may be obtained by extending the peripheral wall 49. The upper wall 50 may be obtained by extending the sub-plane 33 or may be configured by a member different from the sub-plane 33.

A third optical connector 38 may be provided on the other surface 32 b side of the main plane 32. The third optical connector 38 is fitted and optically connected to a fourth optical connector 25 attached to the second circuit board 23 described later. The main plane 32 according to the present embodiment has four third optical connectors 38. A portion of the main plane 32 where the third optical connector 38 is provided is provided with a through hole 39 for drawing out the optical fiber 42 joined to the third optical connector 38 to the one surface 32a side of the main plane 32.

A plurality (two in this embodiment) of first circuit boards 22 may be accommodated in the first space E1 of the frame 11, that is, on the one surface 32a side of the main plane 32. The first circuit board 22 may be provided with a photoelectric conversion unit 51 for converting an electrical signal into an optical signal or conversely converting an optical signal into an electrical signal. The photoelectric conversion unit 51 may include a light emitting diode 52 that outputs an electrical signal as an optical signal. One end surface of the optical fiber 42 may face the light emitting diode 52.

Each first circuit board 22 may be accommodated in a casing 29 having a hollow inside. The first circuit board 22 is housed in the housing 29 so that the main surface 22a of the first circuit board 22 is perpendicular to one surface 32a of the main plane 32 (or one surface 33a of the sub-plane 33). May be inserted into the frame 11. The plurality of housings 29 may be arranged in parallel in the frame 11.

The housing 29 containing the first circuit board 22 may be detachable from the frame 11. When the housing 29 is inserted into the frame 11, the second optical connector 24 of the first circuit board 22 and the first optical connector 35 of the sub-plane 33 are fitted together. Further, the second optical connector 24 of the first circuit board 22 is fitted. The electrical connector 26 and the first electrical connector 37 of the sub-plane 33 may also be fitted.

The second optical connector 24 may be provided at one end of the main surface 22a of the first circuit board 22. A ferrule 41 may be built in the second optical connector 24. The other end surface of the optical fiber 42 may penetrate the ferrule 41 and be exposed at the end of the ferrule 41. The second optical connector 24 is fitted with the first optical connector 35 provided on the one surface 33 a of the sub-plane 33. The ferrule 41 through which the optical fiber 42 penetrates is also built in the first optical connector 35, and the

ferrules

41, 41 are brought into contact with each other by fitting the second optical connector 24 and the first optical connector 35. Thereby, the end surfaces of both

optical fibers

42 and 42 are joined and optically connected.

The side of the first circuit board 22 facing the main plane 32 may have a shape in which a portion other than the portion facing the sub-plane 33 protrudes toward the main plane 32. The 2nd electrical connector 26 may be attached to this protrusion part.

A first electrical connector 37 that fits and is electrically connected to the second electrical connector 26 of the first circuit board 22 may be provided on a portion of the one surface 32 a of the main plane 32 that does not overlap the sub-plane 33. .

A guide pin 61 may be provided on one surface 32 a of the main plane 32 or one surface 33 a of the sub-plane 33, and a guide pin receiver 62 that is paired with the guide pin 61 may be provided on the main plane 32 side of the first circuit board 22. By providing the guide pin 61 and the guide pin receiver 62, the first circuit board 22 can be easily inserted and fitted at an appropriate position.

The first optical connector 35 may be attached to the through hole 36 of the sub-plane 33 with some play. That is, a predetermined gap is provided between the through hole 36 of the sub-plane 33 and the first optical connector 35, and the first optical connector 35 is movable within the range of the gap between the through hole 36. May be attached. Thereby, even when the guide pin 61 and the guide pin receiver 62 are provided, the first optical connector 35 and the second optical connector 24, and the first electrical connector 37 and the second electrical connector 26 are easily fitted. Can be made.

A plurality (two in this embodiment) of second circuit boards 23 may be accommodated in the second space E2 of the frame 11, that is, the other surface 32b side of the main plane 32. The second circuit board 23 may be provided with a photoelectric conversion unit 53 for converting an electrical signal into an optical signal or conversely converting an optical signal into an electrical signal. The photoelectric conversion unit 53 may include a photodiode 54 that outputs an optical signal as an electrical signal. One end surface of the optical fiber 42 may face the photodiode 54.

Each of the second circuit boards 23 may be accommodated in a casing 28 having a hollow inside. The second circuit board 23 is inserted into the frame 11 with the main surface 23 a of the second circuit board 23 being accommodated in the housing 28 so as to be perpendicular to the other surface 32 b of the main plane 32. Good. The plurality of housings 28 may be arranged in parallel in the frame 11. The frame 11 may be provided with a partition wall for partitioning the casings 28 inserted adjacent to each other, or a rail member for holding an end of the casing 28.

The housing 28 containing the second circuit board 23 may be detachable from the frame 11. When the housing 28 is inserted into the frame, the fourth optical connector 25 of the second circuit board 23 and the third optical connector 38 of the main plane 32 are fitted accordingly.

A fourth optical connector 25 may be provided at one end of the main surface 23 a of each second circuit board 23. In the present embodiment, two fourth

optical connectors

25, 25 are provided for one second circuit board 23. A ferrule 41 may be built in the fourth optical connector 25. The other end surface of the optical fiber 42 may penetrate the ferrule 41 and be exposed at the end of the ferrule 41. The fourth optical connector 25 is fitted with a third optical connector 38 provided on the other surface 32 b of the main plane 32. The third optical connector 38 also has a built-in ferrule 41 through which the optical fiber 42 penetrates. By fitting the third optical connector 38 and the fourth optical connector 25, both

ferrules

41 and 41 are brought into contact with each other. . Thereby, the end surfaces of both

optical fibers

42 and 42 are joined and optically connected. The optical fiber 42 may be covered with a tubular protective member 45.

A second electrical connector 65 may be provided on the second circuit board 23. The third electrical connector 65 of the second circuit board 23 may be fitted with the fourth electrical connector 66 provided on the other surface 32b of the main plane 32.

Similarly to the above, a guide pin 63 may be provided on the other surface 32 b of the main plane 32, and a guide pin receiver 64 paired with the guide pin 63 may be provided on the main plane 32 side of the second circuit board 23. By providing the guide pin 63 and the guide pin receiver 64, the second circuit board 23 can be easily inserted and fitted at an appropriate position.

In this embodiment, the guide pins 61 and 64 and the

guide pin receivers

62 and 63 are described as single components. However, the guide pins and the components corresponding to the guide pin receivers are electrical connectors, optical connectors, or the like. It may be incorporated (becomes an integral part).

With the above configuration, the first circuit board 22 and the second circuit board 23 can communicate with each other through the optical plane 31 using an optical signal. For example, an electric pulse signal generated in the first circuit board 22 is converted into an optical pulse signal by the light emitting diode 52 of the photoelectric conversion unit 51. The optical pulse signal generated by the light emitting diode 52 propagates through the optical fiber 42 and reaches the second optical connector 24. Then, the optical pulse signal propagates through the optical fiber 42 joined to the first optical connector 35 fitted with the second optical connector 24 and reaches the third optical connector 38. Then, the optical pulse signal propagates through the optical fiber 42 joined to the fourth optical connector 25 fitted with the third optical connector 38, and constitutes the photoelectric conversion unit 53 of the second circuit board 23. 54. The optical pulse signal input to the photodiode 54 is converted into an electric pulse signal. Thus, by using an optical signal for communication between the first circuit board 22 and the second circuit board 23, communication can be performed at a higher speed than when an electric signal is used.

FIG. 3 is a front view showing a connection configuration example of optical fibers in the optical wiring device 10.

A second optical connector 24 provided at one end of the first circuit board 22, a first optical connector 35 provided on one surface 33 a of the sub-plane 33, and a third optical connector provided on the other surface 32 b of the main plane 32. A ferrule 41 may be accommodated in 38 and the fourth optical connector 25 provided at one end of the second circuit board 23. As an example of the ferrule 41, there is an MT (Mechanically Transferable) ferrule (MT type optical connector; F12 type optical connector established in JIS C 5981).

In each ferrule 41, the tip portion of the optical fiber 42 is inserted and fixed. The optical fiber 41 may be a single optical fiber core wire or an optical fiber strand, or may be a bundle of a plurality of single optical fiber core wires (or optical fiber strands). Good.

The second optical connector 24A of the first circuit board 22A is fitted to the first optical connector 35A on the one surface 33a of the sub-plane 33.

The ferrule 41A of the first optical connector 35A and the ferrule 41J of the third optical connector 38A are connected by an optical fiber 42A. The ferrule 41A of the first optical connector 35A and the ferrule 41F of the third optical connector 38B are connected by an optical fiber 42B. The third

optical connectors

38A and 38B are fitted to the fourth

optical connectors

25A and 25B provided on the second circuit board 23A, respectively.

The ferrule 41B of the first optical connector 35A and the ferrule 41G of the third optical connector 38D are connected by an optical fiber 42C. The ferrule 41B of the first optical connector 35A and the ferrule 41L of the third optical connector 38C are connected by an optical fiber 42D. The third

optical connectors

38C and 38D are fitted with the fourth

optical connectors

25C and 25D attached to the second circuit board 23B, respectively.

The second optical connector 24B of the first circuit board 22B is fitted to the first optical connector 35B on the one surface 33a of the sub-plane 33.

The ferrule 41C of the first optical connector 35B and the ferrule 41K of the third optical connector 38A are connected by an optical fiber 42E. The ferrule 41C of the first optical connector 35B and the ferrule 41E of the third optical connector 38B are connected by an optical fiber 42F.

The ferrule 41D of the first optical connector 35B and the ferrule 41H of the third optical connector 38D are connected by an optical fiber 42G. The ferrule 41D of the first optical connector 35B and the ferrule 41M of the third optical connector 38C are connected by an optical fiber 42H.

With the optical fiber 42 formed on the optical plane 31, the optical fiber of the second optical connector 24A of the first circuit board 22A is connected to the two fourth

optical connectors

25A and 25B provided on the second circuit board 23A. Sorted. The optical fiber of the second optical connector 24B of the first circuit board 22B is distributed to two fourth

optical connectors

25C and 25D provided on the second circuit board 23B.

In FIG. 3, each optical fiber 42 includes ferrules 41 A and 41 C of the first circuit board 22 positioned above the optical wiring device 10, and ferrules 41 E and 2 E of the second circuit board 23 positioned above the optical wiring device 10. 41F, 41J, and 41K are connected. Each optical fiber 42 includes

ferrules

41B and 41D of the first circuit board 22 located under the optical wiring device 10 and

ferrules

41G, 41H, and 2nd of the second circuit board 23 located under the optical wiring device 10. 41L and 41M are connected. In this way, by arranging the optical fiber 42 separately for the optical fiber that connects the ferrules 41 located at the upper part of the optical wiring device 10 and the optical fiber that connects the ferrules 41 located at the lower part, In the accommodation space in which the optical fiber 42 is accommodated in the optical plane 31, the optical fiber 42 can be arranged in an orderly manner. That is, the entanglement of the optical fiber 42 can be reduced in the accommodation space.

FIG. 4 is a front view showing a configuration example of an optical plane. FIG. 5 is a side view (sectional view) showing a configuration example of an optical plane. FIG. 5 is a cross-sectional view taken along the line AA in FIG.

The optical fiber 42 drawn from the first optical connector 35 provided on the one surface 33a of the sub-plane 33 has an allowable bending radius or more within the accommodation space (gap) formed between the main plane 32 and the sub-plane 33. It may be curved. Similarly, the optical fiber 42 drawn out from the third optical connector 38 provided on the other surface 32b of the main plane 32 may be bent at an allowable bending radius or more in the accommodation space (gap). The optical fiber 42 drawn out from the first optical connector 35 or the third optical connector 38 may be accommodated in an accommodation space formed by the main plane 32, the sub plane 33, and the peripheral wall 49.

FIG. 6 is a perspective view showing a configuration example of the optical plane 31.

Of the optical fibers 42A to 42G on the optical plane 31 of FIG. 3, the

optical fibers

42A, 42B, 42D, 42E, and 42F extending outside the accommodation space (gap) formed between the main plane 32 and the subplane 33. , 42H may be covered with a conduit formed by sidewall 70 and top wall 50 as shown in FIG. The optical fiber 42 may be covered with a protective member 45. The protective member 45 may be a substantially cylindrical tube material that bundles a plurality of optical fiber strands 46 that respectively constitute the

optical fibers

42A, 42D, 42E, and 42H. A terminal member 48 for binding the optical fiber 46 may be attached to the end of the protection member 45.

An opening 47 for drawing out the

optical fibers

42A, 42B, 42D, 42E, 42F, and 42H covered with the protective member 45 may be formed in a part of the side wall 70 and the upper wall 50. The opening 47 may be equal to or larger than the diameter of the protection member 45. When the conduit is disposed up to the position of the third optical connector 38, the protective member 45 may not be used.

The optical fibers 42 C and 42 G whose wiring is completed only in the housing space may be wired with the optical fiber 46 being exposed without being covered with the protective member 45. Further, the portions in the accommodation spaces of the

optical fibers

42A, 42B, 42D, 42E, 42F, and 42H may not be covered with the protective member 45 and may be wired in a state where the optical fiber 46 is exposed. It may be covered with 45 and wired.

The optical wiring device 10 according to the present embodiment has the following effects, for example.

(1) The optical plane 31 according to the present embodiment may be composed of a main plane 32 and a sub-plane 33 arranged in parallel with a predetermined interval with respect to one surface 32a of the main plane 32. Accordingly, at least a part of the optical fiber 42 wired on the main plane 32 is accommodated in an accommodation space (gap) formed between the main plane 32 and the sub-plane 33, so that the optical fiber 42 is It is possible to prevent the wiring from rising from the one surface 32a of the main plane 32. That is, since the space occupied by the optical plane 31 is reduced, the optical wiring device 10 can be reduced in size. Further, it is possible to prevent a mistake that the optical fiber 42 that is floating when the first circuit board 22 is attached to and detached from the frame 11 is caught.

(2) A conduit is formed outside the sub-plane 33 using the side wall 70 and the upper wall 50 (protective member 45 if necessary), and an optical fiber is wired in the conduit. The space occupied can be reduced.

(3) Since a large number of optical fibers 42 are accommodated in an accommodating space (gap) formed between the main plane 32 and the sub-plane 33, a portion where the optical fibers are randomly arranged is concealed, An orderly appearance is maintained, and the appearance can be improved.

(4) By covering the conduit of the optical fiber 42 wired on the main plane 32 and the portion exposed to the outside of the accommodation space with the protective member 45, the aesthetic appearance on the wiring of the optical fiber 42 can be improved. . Further, it is possible to prevent the optical fiber 42 from being floated and wired from the one surface 32a of the main plane 32.

As mentioned above, although one embodiment was described, these are illustrations for explaining the present invention, and the scope of the present invention is not intended to be limited only to these examples. The present invention can be implemented in various other forms.

The optical connection device 10 may be configured not to include the second circuit board 23. An optical plane 31 (back plane) having a main plane 32 and a sub-plane 33 is arranged so as to be shifted toward one end in the frame 11, and a plurality of circuit boards are connected to only one side of the optical plane 31. It may be configured (so-called backplane connection).

The number of the first circuit boards 22 and the second circuit boards 23 that can be accommodated in the frame 11 may be any number. The number of the first circuit boards 22 and the second circuit boards 23 that can be accommodated in the frame 11 may be different.

The sub-plane 33 may have any size or shape as long as it does not exceed the size of the main plane 32. For example, the sub plane 33 may be attached so as to cover more than half of one surface of the main plane 32. For example, the sub plane 33 may be attached so as to cover the entire surface of the main plane 32. In this case, all the protective members that cover the optical fiber may be omitted.

The first circuit board 22 or the second circuit board 23 may be directly housed in the frame 11 without being housed in the

housing

29 or 28, respectively. In this case, a groove or the like that fits with the peripheral edge (edge) of each circuit board may be formed on the inner wall surface of the frame 11.

DESCRIPTION OF SYMBOLS 10 ... Optical connection apparatus, 11 ... Frame, 22 ... 1st circuit board, 23 ... 2nd circuit board, 24 ... 2nd optical connector, 35 ... 1st optical connector, 31 ... Optical plane, 32 ... Main plane, 33 ... Sub-plane, 42 ... optical fiber, 45 ... protective member

Claims

An optical wiring device comprising an optical plane,
The optical plane has a main plane, a sub-plane, a first optical connector, and an optical fiber,
At least a portion of the sub-plane overlaps the main plane in plan view;
There is a gap between one surface of the main plane facing the sub-plane and one surface of the sub-plane facing the one surface of the main plane,
The first optical connector is disposed in a first opening provided at a predetermined position of the sub-plane,
An accommodation space in which an optical fiber joined to the first optical connector is formed by a gap between one surface of the main plane and one surface of the sub-plane through the first opening provided in the sub-plane. An optical wiring device that is pulled in.
The optical wiring device according to claim 1, wherein a minimum value of a gap between one surface of the main plane and one surface of the sub-plane is based on an allowable bending radius of an optical fiber drawn into the accommodation space.
The optical plane further includes a first electrical connector in a portion that does not overlap the subplane on one side of the main plane,
The second optical connector and the second electrical connector that are attachable to the optical plane and are respectively fitted to the first optical connector and the first electrical connector of the optical plane when attached to the optical plane. The optical wiring device according to claim 2, further comprising: the first circuit board including:
The optical plane is
A third optical connector;
A peripheral wall located between one surface of the main plane and one surface of the sub-plane, and fixing the sub-plane to the main plane and forming the accommodating space;
The third optical connector is disposed on the other surface opposite to the one surface of the main plane,
The peripheral wall is provided with a second opening for drawing the optical fiber drawn into the housing space out of the housing space,
The optical fiber drawn out from the second opening of the peripheral wall passes through a predetermined conduit fixed to one surface of the main plane, and passes through a through hole provided in the main plane, thereby the third optical connector. The optical wiring device according to claim 3, wherein the optical wiring device is joined to the optical wiring device.
The optical wiring device according to claim 4, wherein a distance from one surface of the main plane to an upper wall of the conduit is equal to or less than a distance from one surface of the main plane to one surface of the sub-plane.
5. The light according to claim 4, wherein in the optical fiber, at least a part of the housing space and the outside of the conduit is covered with a protective member, and at least a part of the housing space or the inside of the conduit is not covered with the protective member. Wiring device.
5. The second circuit board further comprising a fourth optical connector that can be mounted on the optical plane and has a fourth optical connector that fits with the third optical connector of the optical plane when mounted on the optical plane. The optical wiring apparatus as described.
The optical plane further includes a fourth electrical connector on the other surface of the main plane,
The optical wiring device according to claim 7, wherein the second circuit board further includes a third electrical connector that fits into the fourth electrical connector of the optical plane when mounted on the optical plane.
A fifth optical connector is further disposed on the other surface of the main plane,
There are a plurality of optical fibers joined to the first optical connector, and at least one of the plurality of optical fibers passes through a third opening provided at a predetermined position leading to the accommodation space of the main plane. , Joined to the fifth optical connector,
The optical wiring device according to claim 8, wherein the second circuit board further includes a sixth optical connector that fits with the fifth optical connector of the optical plane when mounted on the optical plane.
The optical plane and the first circuit board each have a guide mechanism for mounting the first circuit board perpendicular to the optical plane,
A gap is provided between the first opening of the sub-plane and the first optical connector, and the first optical connector is movable within the range of the gap between the first opening. The optical wiring device according to claim 3.
The optical plane further includes a first electrical connector on a portion of the main plane that does not overlap the subplane.
The second optical connector and the second electrical connector that are attachable to the optical plane and are respectively fitted to the first optical connector and the first electrical connector of the optical plane when attached to the optical plane. The optical wiring device according to claim 1, further comprising: the first circuit board including:
The optical plane is
A third optical connector;
A peripheral wall located between one surface of the main plane and one surface of the sub-plane, and fixing the sub-plane to the main plane and forming the accommodating space;
The third optical connector is disposed on the other surface opposite to the one surface of the main plane,
The peripheral wall is provided with a second opening for drawing the optical fiber drawn into the housing space to the outside of the housing space,
The optical fiber drawn from the second opening of the peripheral wall passes through a predetermined conduit fixed to one surface of the main plane, and passes through a through hole provided at a predetermined position of the main plane. The optical wiring device according to claim 1, wherein the optical wiring device is joined to a three-optical connector.