JPS60107005A - Optical rotary connector - Google Patents
Optical rotary connectorInfo
- Publication number
- JPS60107005A JPS60107005A JP21469983A JP21469983A JPS60107005A JP S60107005 A JPS60107005 A JP S60107005A JP 21469983 A JP21469983 A JP 21469983A JP 21469983 A JP21469983 A JP 21469983A JP S60107005 A JPS60107005 A JP S60107005A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- rotating body
- optical path
- terminals
- optical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
- G02B6/29395—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device configurable, e.g. tunable or reconfigurable
-
- 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
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2808—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using a mixing element which evenly distributes an input signal over a number of outputs
-
- 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
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
- G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、光信号や電気信号を多チャンネルで伝送する
光ロータリコネクタに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical rotary connector that transmits optical signals and electrical signals in multiple channels.
従来の光ロータリコネクタは、同軸タイプの１本の伝送
光路を介して信号伝送を外しているため、複数の信号伝
送を行う場合には、時分割等の多重伝送方式を採用しな
ければならない。Conventional optical rotary connectors remove signal transmission through a single coaxial type transmission optical path, so when transmitting multiple signals, a multiplex transmission method such as time division must be employed.
しかし、このようにすると回路処理が難しいため、信号
伝送系のコストが高くなる欠点があった。However, this method has the drawback of increasing the cost of the signal transmission system because circuit processing is difficult.
したがって本発明の目的は、信号伝送系のコスト高を防
止して多チャンネルの信号伝送をできるようにした光ロ
ータリコネクタを提供することにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an optical rotary connector that enables multi-channel signal transmission while preventing the cost increase of the signal transmission system.
以下本発明を第１図に示す一実施例を参照して説明する
。The present invention will be explained below with reference to an embodiment shown in FIG.
図中１は回転体、２は回転体１に対向して設けた静止体
である。なお、本実施例の場合、回転体ｌは電力送受用
の他の回転体３に支持されているとともに、静止体２は
電力送受用の他の筒状静止体４内に収められている。そ
して、回転体３はその筒状部３ａと筒状静止体４との間
に配設された玉軸受５，６を介して回転自在に設けられ
ている。なお、図中７，８は玉軸受５゜６の外れ止め用
のナツト部材、９は玉軸受５゜６間の間隔保持用のスリ
ーブである。また上記両回転体１，３、両静止体２，４
、ナツト部材７．８、およびスリーブ９は、いずれも電
気絶縁材製で、かつ玉軸受５，６の全部品は金属製であ
る。In the figure, 1 is a rotating body, and 2 is a stationary body provided opposite to the rotating body 1. In the case of this embodiment, the rotating body 1 is supported by another rotating body 3 for transmitting and receiving power, and the stationary body 2 is housed within another cylindrical stationary body 4 for transmitting and receiving power. The rotating body 3 is rotatably provided via ball bearings 5 and 6 disposed between the cylindrical portion 3a and the cylindrical stationary body 4. In the figure, 7 and 8 are nut members for preventing the ball bearings 5.6 from coming off, and 9 is a sleeve for maintaining the distance between the ball bearings 5.6. In addition, both the rotating bodies 1 and 3 and the stationary bodies 2 and 4
, the nut member 7.8 and the sleeve 9 are all made of electrically insulating material, and all parts of the ball bearings 5, 6 are made of metal.
玉軸受５，６の内輪５に、６ｍにはそれぞれ電力送受用
の電線１０ ’＋ １１の一端が接続されているととも
に、同じく外輪５ｂ 、６ｂにはそれぞれ電力送受用の
電線１２．１３の一端が接続されている。電線１０．１
１の他端側は上記回転体３の筒部３ａ内面に軸方向に沿
って配線され、回転側に導出されている。そして、電線
１０．１１の他端同志又は電線１２ ｔ １ Ｂの他端
同志のいずれか一方は、図示しない直流電源等を介して
接続されているとともに、他方は図示しない負荷を介し
て接続されている。この構成により電源からの電力は、
光ロータリコネクタ部において玉軸受５．６を介して負
荷に伝えられるようになっている。One end of electric wires 10'+11 for transmitting and receiving power is connected to the inner rings 5 and 6m of the ball bearings 5 and 6, and one end of electric wires 12 and 13 for transmitting and receiving power are connected to the outer rings 5b and 6b, respectively. is connected. Electric wire 10.1
The other end side of 1 is wired along the axial direction on the inner surface of the cylindrical portion 3a of the rotary body 3, and is led out to the rotation side. The other ends of the electric wires 10 and 11 or the other ends of the electric wires 12 t 1 B are connected to each other via a DC power source (not shown), and the other is connected to each other via a load (not shown). ing. With this configuration, the power from the power supply is
The load is transmitted to the optical rotary connector via ball bearings 5.6.
そして、上記回転体１と静止体２とのいずれか一方（本
実施例は回転体１の場合であ、る。）には、夫々異なる
波長域の光信号を出す複数の信号出射端１４Ａ〜１８ｋ
が設けられている。Then, either one of the rotating body 1 and the stationary body 2 (this embodiment is the case of the rotating body 1) has a plurality of signal output ends 14A to 14A, each of which outputs an optical signal in a different wavelength range. 18k
is provided.
信号出射端Ｊ４Ａ〜１８Ａには、入力が電気信号の伝送
の場合は小型フィラメント電球、発光ダイオード等の発
光素子が用いられ、入力が光信号の伝送の場合は光学繊
維束の端面部が使用される。しかも、本発明においては
夫々異なる波長域の光を出射するために、小型フィラメ
ント電球又は光学繊維束の端面部等の前面に対して色フ
ィルタを配設して、これによシ信号出射端Ｊ４Ａ〜１８
ｋを形成しても差支えない。For the signal output ends J4A to J18A, a light emitting element such as a small filament light bulb or a light emitting diode is used when the input is to transmit an electric signal, and an end face of an optical fiber bundle is used when the input is to transmit an optical signal. Ru. Furthermore, in the present invention, in order to emit light in different wavelength ranges, a color filter is disposed on the front surface of the small filament light bulb or the end face of the optical fiber bundle. ~18
There is no problem even if k is formed.
これとともに他方の回転体１又は静止体２（本実施例は
静止体２の場合でおる。）には、上記波長域の光を各別
に通す色フィルタ１４Ｂ〜１８Ｂを夫々前面に配した複
数の信号入射端Ｊ４Ｃ〜１８Ｃが設けられている。これ
ら入射端１４Ｃ〜１８Ｃには、出力形態を電気信号とす
る場合はフォトダイオード等の光−電変換素子が用いら
れ、出力形態を光信号とする場合は光学繊維束の端面部
が用いられる。したがって、上記信号出射端Ｊ４Ａ〜１
８Ａと信号入射端１４０〜１８Ｃとの入出力の形態の組
合せは、電気信号対電気信号、電気信号対光信号、光信
号対電気信号、および光信号対光信号の４通りあって、
そのうちの少なくとも１つの組合せが選択されるように
なっている。なお、本明細書および図面において信号出
射端１４Ａ〜１８Ａ１チヤンネルの信号伝送をなすこと
を意味しているＯ
また、信号出射端１４Ａ〜１８にと信号入射端１４Ｃ〜
１８Ｃとの間には、反射面１９で囲まれた伝送光路２０
が形成されている。なお、本実施例は静止体２に設けた
筒状部２１の内空部で伝送光路２０を形成し、この筒状
部２１の内周面に反射面１９を設けた場合を示している
。At the same time, the other rotating body 1 or stationary body 2 (in this embodiment, the stationary body 2 is used) has a plurality of color filters 14B to 18B arranged on the front surface, each of which passes the light in the above-mentioned wavelength range. Signal incidence ends J4C to J18C are provided. For these incident ends 14C to 18C, a photo-electric conversion element such as a photodiode is used when the output form is an electric signal, and an end face of an optical fiber bundle is used when the output form is an optical signal. Therefore, the signal output end J4A~1
There are four types of input/output combinations between 8A and the signal input ends 140 to 18C: electrical signal to electrical signal, electrical signal to optical signal, optical signal to electrical signal, and optical signal to optical signal.
At least one combination of them is selected. In addition, in this specification and the drawings, the signal output ends 14A to 18A are meant to perform signal transmission of one channel.
18C, there is a transmission optical path 20 surrounded by a reflective surface 19.
is formed. Note that this embodiment shows a case where the transmission optical path 20 is formed in the inner space of a cylindrical part 21 provided in the stationary body 2, and a reflective surface 19 is provided on the inner peripheral surface of this cylindrical part 21.
しかし、本発明において伝送光路２０を形成する筒状部
２１は回転体１に設けてもよく、或は回転体１と静止体
２の双方に設けても差支えない。上記反射面１９は本実
施例の場合正反射を避けるために、ＭｇＯ又はＢ ａ
ＳＯ４等の粉末を接着材とともに塗布して得た層で形成
しており、拡散反射面となっている。However, in the present invention, the cylindrical portion 21 forming the transmission optical path 20 may be provided on the rotating body 1, or may be provided on both the rotating body 1 and the stationary body 2. In this embodiment, the reflecting surface 19 is made of MgO or B a
It is formed of a layer obtained by applying powder such as SO4 together with an adhesive, and serves as a diffuse reflection surface.
さらに、伝送光路２０内には少々くとも一枚の拡散透過
板２２が、この光路２ｏを横切るようにして配設されて
いる。なお、図中２３は信号出射端Ｊ４Ａ〜１８Ｃに至
る入力側のｖｔｍ又は光学繊維束であり、２４は信号入
射端１４Ｃ〜１８Ｃに接続された出力側の電線又は光学
繊維束である。Furthermore, at least one diffuser-transmitting plate 22 is disposed within the transmission optical path 20 so as to cross this optical path 2o. In the figure, 23 is a VTM or optical fiber bundle on the input side leading to the signal output ends J4A to 18C, and 24 is an electric wire or optical fiber bundle on the output side connected to the signal input ends 14C to 18C.
このような光ロータリコネクタにおいて入力信号は、回
転体１に設けられた信号出射端１４に〜１８Ａから夫々
異った波長域の光として出射される。なお、図中実線矢
印は信号出射端１４ｋから出た光の光跡、点線矢印は信
号出射端１５ｋから出た光の光跡、１点鎖線矢印は信号
出射端Ｊ６Ａから出た光の光跡、細線矢印は信号出射端
Ｊ７Ａから出た光の光跡、２点鎖線矢印は信号出射端１
８ｋから出た光の光跡の一部を夫々例示している。出射
された光は、これら矢印で示されるように反射面１９で
反射された後、又は直接に拡散透過板２２に入射されて
、この透過板２２を通過する間に拡散される。こうして
拡散された光は、更に反射面１９で反射された後、又は
直接に色フィルタ１４Ｂ〜１８Ｂを通して静止体２に設
けられた信号入射面１４０〜１８Ｃに入射され、かくし
て信号伝送がなされる。この場合、色フィルタ７４Ｂ〜
１８Ｂによって波長の選択がなされるから、信号入射端
１４Ｃ〜１８Ｃに対しては、夫々対応する信号出射端１
４八〜１８ｋからの光のみが入射される。In such an optical rotary connector, input signals are emitted from ~18A to the signal output end 14 provided on the rotating body 1 as light in different wavelength ranges. In addition, in the figure, the solid arrow indicates the light trail of the light emitted from the signal output end 14k, the dotted line arrow indicates the light trail of the light emitted from the signal output end 15k, and the one-dot chain arrow indicates the light trail of the light emitted from the signal output end J6A. , Thin line arrow is the light trail of light emitted from signal output end J7A, double-dashed line arrow is signal output end 1
Some examples of light trails emitted from 8K are shown. The emitted light is reflected by the reflective surface 19 as shown by these arrows, or is directly incident on the diffuse transmission plate 22, and is diffused while passing through the transmission plate 22. The light thus diffused is further reflected by the reflective surface 19 or directly passes through the color filters 14B to 18B and then enters the signal incidence surfaces 140 to 18C provided on the stationary body 2, thus transmitting the signal. In this case, color filters 74B~
Since the wavelength is selected by 18B, for the signal input ends 14C to 18C, the corresponding signal output ends 1
Only light from 48 to 18K is incident.
なお、上記一実施例は以上のように構成したが、本発明
では電力送受系は省略してもよいが、この送受系を実際
の製品に設ける場合には、上記一実施例に示しだ構成を
複数並設して、多系統の電力送受を行うようにしても差
支えない。Although the above-mentioned embodiment is configured as described above, the power transmission/reception system may be omitted in the present invention, but when this transmission/reception system is provided in an actual product, the configuration shown in the above-mentioned embodiment may be omitted. There is no problem even if multiple systems are installed in parallel to perform multi-system power transmission and reception.
また、本発明において拡散透過板２２を複数枚、又は肉
厚のものを用いる場合には、反射面１９は特別に拡散（
乱）反射させる措置を必要としない。さらに、本発明に
おいて人出方の方向は上記一実施例と逆にしてもよいと
ともに、本発明は双方向伝送を行う場合にも実施できる
。In addition, in the case of using a plurality of diffuse transmitting plates 22 or a thick one in the present invention, the reflecting surface 19 is specially designed for diffusing (
No reflection measures are required. Furthermore, in the present invention, the direction of the crowd may be reversed from that in the above-described embodiment, and the present invention can also be implemented in a case where bidirectional transmission is performed.
その他、本発明の実施に肖っては、発明の要旨に反しな
い限り、回転体、静止体、信号出射端、色フィルタ、信
号入射端、伝送光路、拡散透過板等の具体的な構造、形
状、位置、材質等は、上記一実施例に制約されることな
く、種々の態様に構成して実施し得ることは勿論である
。In addition, in carrying out the present invention, specific structures such as a rotating body, a stationary body, a signal output end, a color filter, a signal input end, a transmission optical path, a diffuse transmission plate, etc., unless it goes against the gist of the invention, Of course, the shape, position, material, etc. are not limited to the one embodiment described above, and can be configured and implemented in various ways.
以上説明した本発明は上記特許請求の範囲に記載の構成
を要旨とするから、伝送光路内の反射面と拡散透過板と
により、信号出射端から出射された光が信号入射端に直
接入射することを防止し、かつ回転に伴って対応する信
号出射端と信号入射端とが丁度対向して位１ｉｆｆｉさ
れなくても、確実に光信号を信号入射端に入射させるこ
とができる。これとともに、複数の信号出射端から出る
光は夫々の波長域が異なり、かつ複数の信号入射端の前
面に上記波長域の光を各別に通す色フィルタを夫々設け
たから、信号入射端に一つの波長域の光のみを入射させ
ることができ、混信を防止できる。したがって、以上の
理由により本発明によれば、回転に無関係に信号を多チ
ャンネル伝送できるとともに、信号出力の変動も防止で
き、しかも従来の多重伝送方式による多チヤンネル伝送
化に比較して、特別に困難な回路処理を必要としないの
で、低コストで実現できる等の効果がある。Since the present invention described above has the configuration described in the claims above, the light emitted from the signal output end is directly incident on the signal input end by the reflective surface and the diffuser transmission plate in the transmission optical path. This can be prevented, and the optical signal can be reliably input to the signal input end even if the corresponding signal output end and signal input end are not exactly opposed to each other due to rotation. At the same time, the light emitted from the plurality of signal output ends has different wavelength ranges, and since color filters were provided in front of the plurality of signal input ends to pass the light in the above wavelength ranges separately, one Only light in the wavelength range can be input, and interference can be prevented. Therefore, for the above reasons, according to the present invention, signals can be transmitted in multiple channels regardless of rotation, and fluctuations in signal output can also be prevented. Since it does not require difficult circuit processing, it has advantages such as being able to be realized at low cost.
第１図は本発明の一実施例の構成を概略的に示す断面図
である。
１・・・回転体、２・・・静止体、１４Ａ〜１８Ａ・・
・信号出射端、１４Ｂ〜１８Ｃ・・・色フィルタ、１４
Ｃ〜１８Ｃ・・・信号入射端、１９・・・反射面、２０
・・・伝送光路、２２・・・拡散透過板。FIG. 1 is a sectional view schematically showing the structure of an embodiment of the present invention. 1... Rotating body, 2... Stationary body, 14A to 18A...
・Signal output end, 14B to 18C...color filter, 14
C~18C...Signal incidence end, 19...Reflection surface, 20
...Transmission optical path, 22... Diffuse transmission plate.
Claims (1)
か一方に、夫々異なる波長域の光信号を出す複数の信号
出射端を設けるとともに、他方に上記波長域の光を各別
に通す色フィルタを夫々前面に配した複数の信号入射端
を設け、かつ上記信号出射端と信号入射端との間には反
射面で囲まれた伝送光路を形成し、この光路内に拡散透
過板を配設したことを特徴とする光ロータリコネクタ。A plurality of signal output ends are provided on either one of the rotating body and a stationary body provided opposite to the rotating body, each of which outputs an optical signal in a different wavelength range, and the light in the above-mentioned wavelength range is passed through the other separately. A plurality of signal input ends each having a color filter arranged on the front side are provided, and a transmission optical path surrounded by a reflective surface is formed between the signal output end and the signal input end, and a diffuse transmission plate is provided in this optical path. An optical rotary connector characterized by the following:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21469983A JPS60107005A (en) | 1983-11-15 | 1983-11-15 | Optical rotary connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21469983A JPS60107005A (en) | 1983-11-15 | 1983-11-15 | Optical rotary connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60107005A true JPS60107005A (en) | 1985-06-12 |
Family
ID=16660135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21469983A Pending JPS60107005A (en) | 1983-11-15 | 1983-11-15 | Optical rotary connector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60107005A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6368605U (en) * | 1986-10-24 | 1988-05-09 |
-
1983
- 1983-11-15 JP JP21469983A patent/JPS60107005A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6368605U (en) * | 1986-10-24 | 1988-05-09 | ||
| JPH0443843Y2 (en) * | 1986-10-24 | 1992-10-16 |
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