JPS6256486B2 - - Google Patents
Info
- Publication number
- JPS6256486B2 JPS6256486B2 JP58178718A JP17871883A JPS6256486B2 JP S6256486 B2 JPS6256486 B2 JP S6256486B2 JP 58178718 A JP58178718 A JP 58178718A JP 17871883 A JP17871883 A JP 17871883A JP S6256486 B2 JPS6256486 B2 JP S6256486B2
- Authority
- JP
- Japan
- Prior art keywords
- light guide
- inclined surface
- light
- groove
- branching device
- 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.)
- Expired
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
- G02B6/2804—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
- G02B6/2817—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 reflective elements to split or combine optical signals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S11/00—Non-electric lighting devices or systems using daylight
-
- 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
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Optical Couplings Of Light Guides (AREA)
Description
【発明の詳細な説明】
技術分野
本発明は、光導体内を伝搬されてくる光エネル
ギーの一部を分岐して該光導体外へ取り出すよう
にした光分岐装置に関する。TECHNICAL FIELD The present invention relates to an optical branching device for branching a part of optical energy propagated within a light guide and taking it out of the light guide.
従来技術
本出願人は、先に、太陽光或いは人工光をレン
ズ等によつて集束して光導体内に導入し、該光導
体を通して任意所望の箇所へ伝達して照明その他
を使用に供することについて種々提案した。而し
て、その際、光導体内を伝搬されてくる光エネル
ギーをその伝搬途中において前記光導体から分岐
して取り出すことができれば、光エネルギーの利
用効率をなお一層向上させることができるが、従
来そのような分岐手段が存在せず、非常に不便で
あつた。PRIOR ART The applicant has previously proposed that sunlight or artificial light is focused by a lens or the like, introduced into a light guide, and transmitted through the light guide to any desired location for illumination or other use. Various proposals were made. In this case, if the light energy propagating within the light guide can be branched and extracted from the light guide during its propagation, the efficiency of use of light energy can be further improved. There was no such branching means, which was extremely inconvenient.
目 的
本発明は、上述のごとき実情に鑑みてなされた
もので、特に、円柱状の光導体内を伝搬されてく
る光エネルギーの一部を該光導体から分岐して取
り出すことのできる光分岐装置を提供することを
目的としてなされたものである。Purpose The present invention was made in view of the above-mentioned circumstances, and in particular, provides an optical branching device that can branch and extract a part of the light energy propagated within a cylindrical light guide from the light guide. It was made with the purpose of providing.
構 成
第１図は、本発明による光分岐装置の動作原理
を説明するための断面構成図で、図中、１は円柱
状の第１の光導体、２は円柱状の第２の光導体、
３は円柱状の第３の光導体で、第１の光導体１の
出光端面Ａは傾斜面に形成され、第２の光導体２
の受光端面Ｂは前記第１の光導体１の出光端面の
傾斜面に係合する傾斜面を有し、中央部に円形の
溝穴２ａを有している。また、第３の光導体３は
図示のように第１の光導体１の外周面において前
記穴２ａに対向する位置に受光端が位置するよう
配設されている。従つて、光導体１を通して伝搬
されてきた光エネルギーL0の一部L1が前記光導
体１の前記穴２ａ部に相当する傾斜面で反射され
て第３の光導体３に分岐され、残りの光エネルギ
ーL0〜L1が第２の光導体２を通して伝搬されて
いく。この分岐光量は穴２ａの面積に関係してい
るので、必要となる分岐光量に応じて穴２ａの面
積を変えればよく、例えば、第１の光導体１を伝
搬されてくる光エネルギーL0の1/4のエネルギー
を分岐して取り出したい時は、穴２ａの面積を第
１の光導体の面積の1/4にすればよい。なお、第
１の光導体１と第２の光導体２の傾斜面の接続は
光学のり、光学ゲル、光学マツチングオイル等に
よつて行うが、その際、両光導体の傾斜面を図中
にＰにて示すように相補的に係合する凹凸部に形
成すると、接続作業時における心合が非常に楽に
なる。また、穴２ａは図示例においては光導体２
の軸に平行にあけてあるが、傾斜面に対して直角
の方向つまり第２図に示すようにあけてもよいこ
とは容易に理解できよう。Configuration FIG. 1 is a cross-sectional configuration diagram for explaining the operating principle of the optical branching device according to the present invention. In the figure, 1 is a cylindrical first light guide, and 2 is a cylindrical second light guide. ,
3 is a cylindrical third light guide, the light output end face A of the first light guide 1 is formed as an inclined surface, and the second light guide 2
The light-receiving end surface B has an inclined surface that engages with the inclined surface of the light-emitting end surface of the first light guide 1, and has a circular slot 2a in the center. Further, as shown in the figure, the third light guide 3 is disposed such that its light receiving end is located at a position facing the hole 2a on the outer peripheral surface of the first light guide 1. Therefore, a part L1 of the light energy L0 propagated through the light guide 1 is reflected by the inclined surface corresponding to the hole 2a of the light guide 1 and branched to the third light guide 3, and the remainder is of light energy L 0 to L 1 is propagated through the second light guide 2 . Since the amount of branched light is related to the area of the hole 2a, the area of the hole 2a may be changed according to the required amount of branched light.For example, the light energy L0 propagated through the first light guide 1 When it is desired to branch out 1/4 of the energy, the area of the hole 2a should be set to 1/4 of the area of the first light guide. Note that the inclined surfaces of the first light guide 1 and the second light guide 2 are connected using optical glue, optical gel, optical matching oil, etc. In this case, the inclined surfaces of both light guides are By forming concave and convex portions that engage in a complementary manner as shown by P in FIG. 1, alignment during connection work becomes very easy. In addition, the hole 2a is the light guide 2 in the illustrated example.
Although the holes are shown parallel to the axis of , it will be readily understood that the holes may be made in a direction perpendicular to the inclined surface, as shown in FIG.
第３図は、本発明の一実施例を説明するための
側面構成図、第４図は第３の矢印の方向から見
た図で、図中、第１図及び第２図と同様の作用を
する部分には同一の参照番号が付してある。而し
て、この実施例においては、第２の光導体２の傾
斜面には傾斜方向と直角の方向に貫通溝２ｂが設
けられており、この貫通溝２ｂに第５図に示すよ
うな第４の光導体４が着脱可能に装着されるよう
になつている。 FIG. 3 is a side configuration diagram for explaining one embodiment of the present invention, and FIG. 4 is a view seen from the direction of the third arrow. The same reference numerals are given to the parts that do. In this embodiment, a through groove 2b is provided in the inclined surface of the second light guide 2 in a direction perpendicular to the inclination direction, and a through groove 2b as shown in FIG. Four light guides 4 are adapted to be removably mounted.
第５図は、前記第４の光導体４の一例を示す図
で、ａ図は正面図、ｂ図は側面図で、この実施例
の場合、該第４の光導体４の傾斜面側の略中央部
に円形の切り欠き溝４ａを有している。従つて、
該第４の光導体４を溝２ｂ内に装着すると、第１
の光導体１内に伝搬されてきた光エネルギーの一
部は前述のように溝部４ａで反射されて第３の光
導体３に導かれる。この場合、分岐光量を変える
には、溝４ａの面積を変えればよいので、例え
ば、溝４ａの面積の異なる第４の光導体を複数本
準備しておき、その中から所望の溝面積をもつも
のを選択使用するようにしてもよいし、或いは、
第６図ａに示すように、比較的大きな溝面積４
a′を有する１本の第４の光導体４′を準備すると
ともに、第６図ｂに示すように、外周面が該溝に
係合し内部に穴５ａを有する第５の光導体５を複
数個準備し、その穴５ａの面積をそれぞれ異なら
しめておき、その中から所望の分岐光量に対応す
る溝５ａを有するものを選んで前記第４の光導体
４′の溝４a′に係合させ、その後に該第４の光導
体４′を前記貫通溝２ｂに装着するようにしても
よい。なお、後者のように、第５の光導体を使用
する場合には、前記第４の光導体４′の溝４a′の
形状は任意形状、例えば、４角形でよく、その場
合には前記第５の光導体５の外形を該第４の光導
体４′の溝形状の合わせて例えば４角形にすれば
よい。 FIG. 5 is a diagram showing an example of the fourth light guide 4, in which figure a is a front view and figure b is a side view. In this embodiment, the slope side of the fourth light guide 4 is It has a circular notch groove 4a approximately in the center. Therefore,
When the fourth light guide 4 is installed in the groove 2b, the first
A part of the optical energy propagated into the optical waveguide 1 is reflected by the groove 4a and guided to the third optical waveguide 3, as described above. In this case, in order to change the amount of branched light, it is sufficient to change the area of the groove 4a, so for example, prepare a plurality of fourth light guides with different areas of the groove 4a, and choose one with the desired groove area. You may choose to use them, or
As shown in Figure 6a, a relatively large groove area 4
One fourth light guide 4' having a diameter a' is prepared, and a fifth light guide 5 whose outer peripheral surface engages with the groove and has a hole 5a inside is prepared, as shown in FIG. 6b. A plurality of light guides are prepared, each having a different area of the hole 5a, and one having a groove 5a corresponding to the desired amount of branched light is selected and engaged with the groove 4a' of the fourth light guide 4'. Then, the fourth light guide 4' may be installed in the through groove 2b. In addition, when a fifth light guide is used as in the latter case, the shape of the groove 4a' of the fourth light guide 4' may be any shape, for example, a rectangular shape. For example, the outer shape of the optical waveguide 5 of No. 5 may be made into a rectangular shape by matching the groove shape of the optical waveguide 4' of the fourth optical waveguide 4'.
第７図は、その場合の一例を示す図で、ａ図
は、前記第４の光導体４′の正面図で、図示のよ
うに例えば４角形の溝４a′が設けられており、こ
の溝４a′にはｂ図に示すように第５の光導体、す
なわち、外形が前記溝４a′に一致し、内部に円形
の溝５ａが設けられるようになつている。 FIG. 7 is a diagram showing an example of such a case, and FIG. 4a' is provided with a fifth light guide, as shown in Figure b, whose outer shape matches the groove 4a' and a circular groove 5a is provided inside.
第８図は、本発明の他の実施例を示す図で、こ
の実施例は、第３図及び第４図に示した溝２ｂに
直列に装着される２本の光導体６，７を有し、こ
れらを溝２ｂの両方向から該溝２ｂ内に入れるよ
うにしたものである。従つて、両光導体６，７を
該光導体６，７の挿入端面が一致するまで挿入す
ると、第１の光導体１よりの光エネルギーは全て
第２の光導体２に伝達され、挿入端面間に隙間を
設けると、その隙間の面積に応じた光エネルギー
が第３の光導体３内に導入される。 FIG. 8 shows another embodiment of the invention, which has two light guides 6, 7 mounted in series in the groove 2b shown in FIGS. 3 and 4. However, these are inserted into the groove 2b from both directions of the groove 2b. Therefore, when both light guides 6 and 7 are inserted until their insertion end faces coincide, all the light energy from the first light guide 1 is transmitted to the second light guide 2, and the insertion end faces of the light guides 6 and 7 are inserted. When a gap is provided between them, light energy corresponding to the area of the gap is introduced into the third light guide 3.
効 果
以上の説明から明らかなように、本発明による
と、制作容易な構成によつて光エネルギーを効果
的に分岐することができる光分岐装置を提供する
ことができる。Effects As is clear from the above description, according to the present invention, it is possible to provide an optical branching device that can effectively branch light energy with a configuration that is easy to manufacture.
第１図及び第２図は、それぞれ本発明による光
分岐装置の動作原理を説明するための要部断面構
成図、第３図は、本発明の実施例を説明するため
の要部側面図、第４図は、第３図の方向から見
た図、第５図乃至第８図は、それぞれ本発明の実
施に使用する光分岐部材を示す図である。
１……第１の光導体、２……第２の光導体、３
……第３の光導体、４，４′……第４の光導体、
５……第５（又は第８）の光導体、６……第６の
光導体、７……第７の光導体。
1 and 2 are cross-sectional configuration diagrams of main parts for explaining the operating principle of the optical branching device according to the present invention, respectively, and FIG. 3 is a side view of main parts for explaining an embodiment of the present invention, FIG. 4 is a view seen from the direction of FIG. 3, and FIGS. 5 to 8 are views each showing a light branching member used in implementing the present invention. 1...First light guide, 2...Second light guide, 3
...Third light guide, 4,4'...Fourth light guide,
5...Fifth (or eighth) light guide, 6...Sixth light guide, 7...Seventh light guide.
Claims (1)
と、受光端面が前記傾斜面に係合する傾斜面を有
しかつ該傾斜面において傾斜方向に対して直角の
方向に延長する溝を有する第２の光導体と、前記
第１の光導体の外周面において前記溝の略中央部
に対向する位置に受光端が配設された第３の光導
体と、前記溝内に該溝に密着して着脱可能に装着
されかつ中央部に切り欠き部を有する第４の光導
体とから成ることを特徴とする光分岐装置。 ２ 前記第４の光導体は光学マツチングオイルを
介して前記第１及び第２の光導体と接触されてい
ることを特徴とする特許請求の範囲第１項に記載
の光分岐装置。 ３ 前記第１の光導体の傾斜面と第２の光導体の
傾斜面とは相補的に係合する凹凸面を有している
ことを特徴とする特許請求の範囲第１項又は第２
項に記載の光分岐装置。 ４ 前記第４の光導体に形成された切り欠き部に
係合して配設されかつ中央部に略円形の穴を有す
る第５の光導体を有することを特徴とする特許請
求の範囲第１項乃至第３項のいずれか１項に記載
の光分岐装置。 ５ 出光端面が傾斜面に形成された第１の光導体
と、受光端面が前記傾斜面に係合する傾斜面を有
しかつ該傾斜面において傾斜方向に対して直角の
方向に延長する溝を有する第２の光導体と、前記
第１の光導体の外周面において前記溝の略中央部
に対向する位置に配設された第３の光導体と、前
記溝内に該溝に密着して着脱可能に直列に配設さ
れた第６及び第７の光導体とから成ることを特徴
とする光分岐装置。[Scope of Claims] 1. A first light guide whose light emitting end face is formed as an inclined surface, and a light receiving end face which has an inclined surface that engages with the inclined surface and is perpendicular to the direction of inclination in the inclined surface. a second light guide having a groove extending in the direction; a third light guide having a light receiving end disposed at a position facing substantially the center of the groove on the outer peripheral surface of the first light guide; and a fourth light guide removably mounted in the groove in close contact with the groove and having a notch in the center. 2. The optical branching device according to claim 1, wherein the fourth light guide is in contact with the first and second light guides via optical matching oil. 3. Claim 1 or 2, characterized in that the inclined surface of the first light guide and the inclined surface of the second light guide have uneven surfaces that complementarily engage with each other.
The optical branching device described in section. 4. Claim 1, further comprising a fifth light guide that is disposed to engage with a notch formed in the fourth light guide and has a substantially circular hole in the center. The optical branching device according to any one of Items 1 to 3. 5. A first light guide whose light emitting end face is formed as an inclined surface, and a light receiving end face having an inclined surface that engages with the inclined surface, and a groove extending in the direction perpendicular to the inclined direction in the inclined surface. a third light guide disposed on the outer circumferential surface of the first light guide at a position facing substantially the center of the groove; An optical branching device comprising a sixth and a seventh light guide which are detachably arranged in series.
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17871883A JPS6069608A (en) | 1983-09-27 | 1983-09-27 | Optical branching device |
| US06/653,983 US4690490A (en) | 1983-09-27 | 1984-09-24 | Light diverting device |
| CA000463981A CA1244695A (en) | 1983-09-27 | 1984-09-25 | Light diverting device |
| DE8484111435T DE3476110D1 (en) | 1983-09-27 | 1984-09-25 | Light diverting device |
| NZ22554384A NZ225543A (en) | 1983-09-27 | 1984-09-25 | Optical conductor light diverter |
| NZ209674A NZ209674A (en) | 1983-09-27 | 1984-09-25 | Light guide light diversion |
| EP84111435A EP0137402B1 (en) | 1983-09-27 | 1984-09-25 | Light diverting device |
| AU33518/84A AU580966B2 (en) | 1983-09-27 | 1984-09-26 | Light diverting device |
| KR1019840005919A KR890003112B1 (en) | 1983-09-27 | 1984-09-26 | Optical branch device |
| SG770/89A SG77089G (en) | 1983-09-27 | 1989-11-30 | Light diverting device |
| HK65/90A HK6590A (en) | 1983-09-27 | 1990-01-25 | Light diverting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17871883A JPS6069608A (en) | 1983-09-27 | 1983-09-27 | Optical branching device |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24487386A Division JPS62115104A (en) | 1986-10-15 | 1986-10-15 | Optical branching device |
| JP24487486A Division JPS62115105A (en) | 1986-10-15 | 1986-10-15 | Optical branching and optical communicating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6069608A JPS6069608A (en) | 1985-04-20 |
| JPS6256486B2 true JPS6256486B2 (en) | 1987-11-26 |
Family
ID=16053345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17871883A Granted JPS6069608A (en) | 1983-09-27 | 1983-09-27 | Optical branching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6069608A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01173080U (en) * | 1988-05-28 | 1989-12-07 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60107604A (en) * | 1983-11-16 | 1985-06-13 | Takashi Mori | Optical branching device |
| US4750795A (en) * | 1985-06-13 | 1988-06-14 | The Board Of Trustees Of The Leland Stanford Junior University | Optical fiber coupler |
| JP6841489B2 (en) * | 2016-10-14 | 2021-03-10 | 学校法人成蹊学園 | Visible light communication system using optical duct |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3937560A (en) * | 1974-11-29 | 1976-02-10 | The United States Of America As Represented By The Secretary Of The Navy | Single fiber access coupler |
| JPS566203A (en) * | 1979-06-28 | 1981-01-22 | Nippon Telegr & Teleph Corp <Ntt> | Photoswitch |
| JPS56111811A (en) * | 1980-02-11 | 1981-09-03 | Toshiba Corp | Light signal branching device |
-
1983
- 1983-09-27 JP JP17871883A patent/JPS6069608A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01173080U (en) * | 1988-05-28 | 1989-12-07 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6069608A (en) | 1985-04-20 |
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