JPS63191378U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図ａは本考案の第１の実施例における光フ
アイバ部の縦断面図、第１図ｂは第１図ａのコア
の中心軸（Ａ―Ａ線）上の屈折率とクラツドの屈
折率及び外部の空気の屈折率との関係を示す図、
第２図ａは第１図ａのＢ―Ｂ線に沿う断面図、第
２図ｂは第２図ａに示した断面の直径方向の屈折
率分布図、第３図ａは第１図ａのＣ―Ｃ線に沿う
断面図、第３図ｂは第３図ａに示した断面の直径
方向の屈折率分布図、第４図は本表示装置の応用
例を示す平面図、第５図ａは本考案の第２の実施
例における光フアイバ部の縦断面図、第５図ｂは
第５図ａのコアの中心軸（Ｄ―Ｄ線）上の屈折率
とクラツドの屈折率及び外部の空気の屈折率との
関係を示す図、第６図は第５図ａ，ｂで示した表
示装置の応用例の平面図、第７図ａは従来の集束
形光フアイバの縦断面図、第７図ｂは第７図ａの
コアの中心軸（Ｈ―Ｈ線）上の屈折率とクラツド
の屈折率及び外部の空気の屈折率との関係を示す
図、第８図ａは第７図ａのＩ―Ｉ線での断面図、
第８図ｂは第７図ａに示した断面の直径方向の屈
折率分布図、第９図ａは第７図ａのＪ―Ｊ線に沿
う断面図、第９図ｂは第９図ａに示した断面の屈
折率分布図、第１０図は従来の光フアイバを用い
た場合の表示の実施例の見取図である。 １，１_ａ，１_ｂ…コア、１_ｎ，１_ａｎ，１_ｂｎ
…コアの屈折率、２，２_ｂ…クラツド、２_ｎ，２
_ｂｎ…クラツドの屈折率、３…空気、３_ｎ…空気
の屈折率、４…不純物、５…光、６，６ａ，６ｂ
…表示装置の光フアイバ部、７，７ａ，７ｂ，７
ｃ…発光器、８，８ａ…光フアイバ、８ｂ…光フ
アイバの端面、９…光フアイバコネクタ、１０…
支持板。 Figure 1a is a vertical cross-sectional view of the optical fiber section in the first embodiment of the present invention, and Figure 1b is the refractive index and cladding refraction on the central axis (A-A line) of the core in Figure 1a. A diagram showing the relationship between the refractive index and the refractive index of external air,
Figure 2a is a sectional view taken along line BB in Figure 1a, Figure 2b is a diametrical refractive index distribution diagram of the cross section shown in Figure 2a, and Figure 3a is a diagram of Figure 1a. FIG. 3b is a diametrical refractive index distribution diagram of the cross section shown in FIG. 3a, FIG. 4 is a plan view showing an application example of this display device, and FIG. 5a is a vertical cross-sectional view of the optical fiber part in the second embodiment of the present invention, and FIG. 6 is a plan view of an application example of the display device shown in FIGS. 5a and 5b, and FIG. 7a is a vertical cross-sectional view of a conventional focusing optical fiber. Figure 7b is a diagram showing the relationship between the refractive index on the central axis (HH line) of the core in Figure 7a, the refractive index of the cladding, and the refractive index of the external air, and Figure 8a is a diagram showing the relationship between the refractive index on the central axis (HH line) of the core in Figure 7a, and the A cross-sectional view taken along line II in figure a,
Fig. 8b is a diametrical refractive index distribution diagram of the cross section shown in Fig. 7a, Fig. 9a is a sectional view taken along the J-J line of Fig. 7a, and Fig. 9b is a diagram of Fig. 9a. The cross-sectional refractive index distribution diagram shown in FIG. 10 is a sketch of an embodiment of a display using a conventional optical fiber. 1, 1 _a , 1 _b ...core, 1 _n , 1 _an , 1 _bn
...Refractive index of core, 2,2 _b ...Clad, 2 _n ,2
_bn ...Refractive index of cladding, 3...Air, _3n ...Refractive index of air, 4...Impurity, 5...Light, 6, 6a, 6b
...Optical fiber section of display device, 7, 7a, 7b, 7
c... Light emitter, 8, 8a... Optical fiber, 8b... End face of optical fiber, 9... Optical fiber connector, 10...
Support plate.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 光の伝搬方向に対して屈折率が変化するコアと
、光を散乱させる不純物を含むクラツドとから集
束形光フアイバを形成し、該フアイバを発光器に
接続したことを特徴とする表示装置。 1. A display device comprising: a focusing optical fiber formed from a core whose refractive index changes with respect to the propagation direction of light and a cladding containing an impurity that scatters light; and the fiber is connected to a light emitter.