JPS58113007U

JPS58113007U - optical coupler

Info

Publication number: JPS58113007U
Application number: JP795382U
Authority: JP
Inventors: 町田　晴彦; 寛小林
Original assignee: 有限会社マチダオプト技研
Priority date: 1982-01-23
Filing date: 1982-01-23
Publication date: 1983-08-02

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案に係る光結合器の一実施例の構成図であ
る。符号ｉａ、　　ｌｂは光学的透明体、２ａ、２ｂは楕円
面、３ａ、　３ｂＧｉ背部、４ａ、４ｂは挿入孔、５ａ
。５ｂは光ファイバー、Ｆ、Ｆ′は焦点である。FIG. 1 is a block diagram of an embodiment of an optical coupler according to the present invention. Symbols ia and lb are optically transparent bodies, 2a and 2b are ellipsoidal surfaces, 3a and 3b are Gi backs, 4a and 4b are insertion holes, and 5a are
. 5b is an optical fiber, and F and F' are focal points.

Claims

[Claims for Utility Model Registration] 1. On the other side of an optically transparent body whose one side is a lens surface, an optical fiber insertion hole whose diameter decreases as it progresses toward the lens surface is provided so that its central axis is the optical axis of the lens surface. The diameter of the entrance of the insertion hole is larger than the diameter of the optical fiber to be connected, the diameter of the top of the insertion hole is smaller than the diameter of the optical fiber, and the top of the insertion hole is An optical coupler, characterized in that the optical coupler is located near the focal point of the lens surface. 2. The optical coupler according to claim 1, wherein the top of the insertion hole is slightly closer to the lens surface than the focal point of the lens surface. 3. The optical coupler according to claim 1, wherein the optical fiber insertion hole has a concave spherical shape. 4. The optical coupler according to claim 1, wherein the lens surface is an elliptical surface.