JPS60229004A - Optical adapter - Google Patents

Abstract

PURPOSE:To prevent axial deviation and angle deviation by boring coaxially holes in a sleeve to internal diameters a little bit smaller than different external diameters of optical connector plugs to be inserted for mutual coupling between two optical connectors, and making the sleeve structure elastic. CONSTITUTION:The sleeve 1 has a constant external diameter to the overall length; and a hole of enough size to insert an optical connector plug 2 is bored almost from the center to the left-hand side and a hole of enough size to insert an optical connector plug 3 is bored at the right-hand side in a figure. When those two holes having the different diameters are bored in the sleeve 1, they are centered on a common center, so the precision of the work is improved. Further, the sleeve 1 is elastic toward the center and outer peripheries of the optical connector plugs 2 and 3 are, therefore, compressed to hold the both in the holes tightly. Consequently, the optical connector plugs 2 and 3 are aligned to each other, and optical fibers 4 and 5 are coupled without axial deviation nor angle deviation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an optical adapter for connecting terminal optical connectors of optical fiber cables used in optical communication systems.

[Prior art]

Many conventional optical adapters of this kind are used to optically connect optical connectors of the same size to each other. However, there are various types of optical connectors in different sizes with various improvements. There are cases where an optical connector with an optical fiber connected is directly connected to an optical system via a connector receiver.

It is possible to standardize the sizes of optical connectors used.

There are many things that cannot be done. For this reason, when optical connectors with different outer diameters are used at the ends of optical fibers, the outer diameters of these two optical connectors are different, making it impossible to connect the optical connectors with each other using an optical adapter. Ta. Furthermore, it is clear that if an optical adapter is simply designed for this purpose, problems such as misalignment of axes, misalignment of angles, or misalignment of blood distance between the optical connectors will occur.

[Purpose of the invention]

A ninth aspect of the present invention is to solve the above-mentioned conventional problems, and to prevent axis misalignment when connecting two optical connectors having different outer diameters, each of which has optical fibers connected to each other.

It is an object of the present invention to provide an optical adapter which is free from angular deviation and interval deviation and has little mating loss.

[Structure of the invention]

In the optical adapter of the present invention, a hole with an inner diameter slightly smaller than the outer diameter of the cylindrical first optical connector plug is inserted from one end, and the hole is opened almost to the boundary of the center part, and the hole is inserted from the other end. . A hole with an inner diameter slightly smaller than the outer diameter of the cylindrical second optical connector plug, which has an outer diameter different from that of the first optical connector plug, is drilled up to the boundary, and It is characterized by having a sleeve shape with the central axes aligned, and the sleeve itself having elasticity in the radial direction.

The following is an example of an optical adapter according to the present invention.
This will be explained with reference to the drawings.

FIG. 1 is a side sectional view showing the structure of an embodiment according to the present invention. In the figure, 1 is a sleeve, and 2 and 3 are optical connectors with different outer diameters.

4 and 5 are optical fibers. The sleeve 1 has an outer diameter that is constant over its entire length, and an inner diameter that is approximately in the center and has a hole sized to insert the optical connector ZOLAG 2 on the left side of the figure, and a hole sized to insert the optical connector ZOLAG 3 on the right side of the figure. holes are drilled. With such a sleeve 1, a common center can be used as a reference when drilling two holes with different diameters, so that machining accuracy can be increased. Furthermore, the sleeve 1 is perforated, as will be seen in the examples below.

It has an elastic force toward the center. Therefore, the optical fiber 4 is connected to the optical connector Shira'' and the optical fiber 7 is connected.
- Connected light of IPA5.

Insert the plug 3 into the corresponding hole from both ends until the ends touch each other.

The elasticity generated in the direction of the center inside the sleeve 1 compresses the outer peripheries of the optical connector plugs 2 and 3, and both are firmly held in the hole. As a result, optical connector plugs 2 and 3
The centers of the optical fibers 4 and 5 coincide with each other, and the optical fibers 4 and 5 are also coupled without any axis deviation or angular deviation.

FIG. 2 is a side sectional view showing an example of a case where the sleeve 1 shown in FIG. 1 is processed to have elasticity.

As seen in the figure, the one with the smaller inner diameter represents the insertion hole 1-1 for the optical connector plug 2.

The thicker one indicates the insertion hole 1-2 for the optical connector plug 3. Then, the slots are alternated from both ends.

1-3a, 1-4a, 1-3b, 1-4b, 1-3c and 1-4C are inserted in this order and by the length of tl.

This allows appropriate pressure to be applied to the optical connector plug.

In the above embodiment, an example of processing as shown in FIG. 2 was used to impart elasticity to the sleeve 1.
It goes without saying that the present invention is not limited to this, but for example, the sleeve itself may be made of an elastic material other than metal. [Effects of the Invention] As is clear from the above description, the present invention According to 2
By opening holes with inner diameters slightly smaller than the outer diameters of different types of optical connectors to be inserted into the ZOLAG, with the border at approximately the center from both ends, and the center axes aligned, forming a sleeve structure, and making the sleeve elastic. It is possible to prevent axial and angular misalignment between the two optical connectors with different outer diameters inserted into the sleeve, and therefore limits the size of the optical connector plug used to connect optical fibers. Therefore, a great effect can be obtained in terms of operation of the optical communication system.

[Brief explanation of drawings]

FIG. 1 is a side sectional view showing the structure of an embodiment of the present invention, and FIG. 2 is a side sectional view showing an example of the case where the sleeve in FIG. 1 is processed to provide elasticity. In the figure, 1 is a sleeve. 2.3 is an optical connector Zorag, 4 and 5 are optical fibers. 1-'3a, 1-3b, 1-3c, 1-4a, 14b,
1-40 is slotted. Agent (7127) Patent attorney Yosuke Goto Figure 1 Figure 2

Claims (1)

[Claims] 1. A hole with an inner diameter slightly smaller than the outer diameter of the cylindrical first optical connector plug inserted from one end is drilled almost to the boundary of the central part, and the hole is inserted from the other end. Ru. Said first
a cylindrical second optical connector having an outer diameter different from the outer diameter of the optical connector plug; a hole having an inner diameter slightly smaller than the outer diameter of the Zorag optical connector plug is drilled up to the boundary, and the central axes of the two different inner diameters are aligned; An optical adapter characterized in that the sleeve has a sleeve shape, and the sleeve itself has elasticity in the radial direction. 2. Claim 1, characterized in that the sleeve itself has several slots that are more than half the length in one direction and shorter than the entire length, alternately inserted from both ends of the sleeve. Optical adapter described in section.