JPH0210512U - - Google Patents
Info
- Publication number
- JPH0210512U JPH0210512U JP8660888U JP8660888U JPH0210512U JP H0210512 U JPH0210512 U JP H0210512U JP 8660888 U JP8660888 U JP 8660888U JP 8660888 U JP8660888 U JP 8660888U JP H0210512 U JPH0210512 U JP H0210512U
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- emitting element
- coupling structure
- optical fiber
- optical coupling
- 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
- 230000003287 optical effect Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000013307 optical fiber Substances 0.000 claims description 4
- NCGICGYLBXGBGN-UHFFFAOYSA-N 3-morpholin-4-yl-1-oxa-3-azonia-2-azanidacyclopent-3-en-5-imine;hydrochloride Chemical compound Cl.[N-]1OC(=N)C=[N+]1N1CCOCC1 NCGICGYLBXGBGN-UHFFFAOYSA-N 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
Description
第１図は本考案の原理を説明するための図、第
２Ａ図はＬに対する光減衰率と曲げによる減衰率
の変動を表わす図、第２Ｂ図は第２Ａ図の測定方
法を説明するための図、第３図は本考案の第１の
実施例を表わす図、第４図は本考案の第２の実施
例を表わす図、第５図は従来の光結合構造を表わ
す図である。
図において、１……発光素子、２……光フアイ
バ、３……発光体。
Figure 1 is a diagram for explaining the principle of the present invention, Figure 2A is a diagram showing the optical attenuation rate with respect to L and the variation of the attenuation rate due to bending, and Figure 2B is a diagram for explaining the measurement method of Figure 2A. 3 shows a first embodiment of the present invention, FIG. 4 shows a second embodiment of the present invention, and FIG. 5 shows a conventional optical coupling structure. In the figure, 1... light emitting element, 2... optical fiber, 3... light emitting body.
Claims (1)
ード光フアイバ２とからなる光結合構造において
、 該光フアイバ２の径をφ、開口数をＮとした時
、該発光素子１の発光体３と該光フアイバ２の先
端との距離Ｌは φ／｛２ｔａｎ（Ｓｉｎ―１Ｎ×０．７）｝≦
Ｌ かつ Ｌ≦φ／｛２ｔａｎ（ｓｉｎ―１Ｎ×０．５）
｝ なる関係を満たすことを特徴とする光結合構造
。 ２ 前記発光素子１は広い指向角を有する発光ダ
イオードである請求項１記載の光結合構造。[Claims for Utility Model Registration] 1. In an optical coupling structure consisting of a light emitting element 1 and a multimode optical fiber 2 optically coupled to the light emitting element 1, where the diameter of the optical fiber 2 is φ and the numerical aperture is N. , the distance L between the light emitting body 3 of the light emitting element 1 and the tip of the optical fiber 2 is φ/{2tan(Sin- 1 N×0.7)}≦
L and L≦φ/{2tan (sin- 1 N×0.5)
} An optical coupling structure characterized by satisfying the following relationship. 2. The optical coupling structure according to claim 1, wherein the light emitting element 1 is a light emitting diode having a wide directivity angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8660888U JPH0210512U (en) | 1988-07-01 | 1988-07-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8660888U JPH0210512U (en) | 1988-07-01 | 1988-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0210512U true JPH0210512U (en) | 1990-01-23 |
Family
ID=31311246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8660888U Pending JPH0210512U (en) | 1988-07-01 | 1988-07-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0210512U (en) |
-
1988
- 1988-07-01 JP JP8660888U patent/JPH0210512U/ja active Pending