JPS6017090B2 - How to connect the light conductor cable - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention efficiently connects a light guide cable made up of a large number of light guides with different diameters and a light guide cable made up of a plurality of light guides with the same diameter, that is, with less optical transmission loss. The present invention relates to a method for supporting a light conductor cable.

The applicant was one of the first to pay attention to the effective use of solar energy, and has already made various proposals, but it goes without saying that in order to effectively utilize solar energy, it is necessary to convert solar energy into light energy. In other words, it is advantageous to use energy without converting it into other forms of energy such as electricity or heat. Based on this perspective, the applicant has focused solar energy and introduced it into the optical conductor cable. The authors proposed that the light guide cable be used to guide illumination to areas where it is needed. In addition, as part of this effort, in order to efficiently introduce solar energy concentrated through lenses and the like into the optical conductor cable, we proposed a optical conductor cable with high mounting efficiency of the optical conductor, as shown in Fig. 1. FIG. 1 is an end view showing an example of the above-mentioned optical conductor cable proposed earlier by the present applicant (Japanese Patent Application No. 55
As shown in the figure, a large number of light guides 1 to 9 having different diameters are used to increase the mounting efficiency of the light guides in the light guide cable.

In other words, in the case of a conventional optical fiber cable, in the case of a seven-core cable, the optical fiber cable is constructed by arranging seven optical fibers 1 as shown in FIG. A gap is created between the conductors 1, and these light guides 1, 1...
The sum of the end areas of these light guides 1, 1...
It is considerably smaller than the area of the circumscribed circle ○ that includes ・, which is about 78%. Therefore, when sunlight is focused and introduced into the optical conductor cable using a suitable optical system such as a Fresnel lens, the most efficient way is to reduce the size of the solar image to the size of the optical beam in the optical conductor cable. The purpose is to make it the same as the circle ○ that encompasses the conductors 1, 1..., but the light guides 1, 1...
If the end face of the cable is made up of only 1, the gap mentioned above will be large, and even if the solar image is formed most effectively, the light that enters the gap between the light guides 1, 1... Since it is not transmitted within the optical conductor cable, the efficiency of introducing solar energy into the optical conductor cable is limited to 78%, which is not very efficient. Mochika Sho 5
The invention of No. 5-12 Somatsu was made to solve the above-mentioned drawbacks, and as shown in Figure 1, a diameter small light guide 2
For example, the light guide 1
If the diameter of the light guide 2 is 1 sail, the diameter of the light guide 2 is approximately 0.352
The diameter of the light guide 3 is about 0.17 ribs, the diameter of the light guide 4 is about 0.156 ribs, the diameter of the light guide 5 is about 0.102 ribs, the diameter of the light guide 6 is about 0.062 ribs, The diameter of the light guide 7 is approximately 0
．． There are 062 legs, 6 light guides 2, IZ light guides 3, 6 light guides 4, 51 light guides, 30 light guides 6, and 1 light guide 7. , light guide 1,1...
When the light guides 2, 2, etc. are arranged in the gaps of ..., the total end area of the light guides accounts for approximately 86% of the area of circle 0, and the light guides 1, This is considerably improved compared to the case where only 1... is used. Below, when calculating in the same way, when light guides 2 and 3 are arranged, approximately 89.8%
, about 91.5% when light guides 2, 3 and 4 are arranged;
Approximately 93.6% when light guides 2, 3, 4 and 5 are installed
, about 94.6% when light guides 2 to 6 are arranged, about 95.4% when light guides 2 to 7 are arranged, and about 95.4% when light guides 2 to 7 are arranged.
, 1... It is considerably improved compared to the case of only...
Furthermore, further improvements can be made by arranging light guides 8, 9, etc. As described above, if a light guide cable is constructed using a large number of light guides with different diameters, the mounting efficiency of the light guides can be increased, and therefore the efficiency of introducing optical energy into the light guide cable can be increased. However, the above-mentioned optical waveguide cable requires a large number of optical waveguides with small diameters, which results in high manufacturing costs, and has drawbacks such as the thin optical waveguides being easily broken when installed over long distances.

The present invention has been made in order to eliminate the above-mentioned drawbacks, and uses the above-mentioned optical conductor cable with high mounting efficiency at the optical energy introduction end, and uses the optical conductor cable (hereinafter referred to as the first optical conductor cable) as the first optical conductor cable. In addition, the first light guide cable is connected to the second light guide cable, which is a standard product that does not use a thin light guide as described above, to efficiently introduce light energy into the In this way, the optical energy efficiently introduced into the first optical conductor cable is transmitted to a desired location through the second optical conductor cable, which is inexpensive and less prone to breakage accidents, and
The transmission loss of optical energy at the connection point between the first optical conductor cable and the second optical conductor cable is reduced.

FIG. 2 is a work process diagram for explaining an embodiment of the present invention, in which 10 is a first optical conductor cable, 20 is a second optical conductor cable, and 30 is a connection odor. Connection smell 301
As shown in the figure, it can be divided into connecting pieces 31 and 32, and V-shaped grooves 31, 31n and 32, 32n are formed on the surfaces facing each connecting piece 31 and 32, respectively. There are many.

The first optical conductor cable 10, as shown in FIG.
It consists of a large number of light guides with different diameters, and solar energy is efficiently introduced at the end (not shown) as described above, and the light output end is 10, 10n as shown in Figure 2.
As shown in FIG. and the diameter of the light guide of the second light guide cable 20), or . Any number of light guides of the first light guide cable 10 may be combined to be equal to the diameter of the light guide of the second light guide cable 20 (however, in this case, the diameter of the light guide of the second light guide cable 20 is larger than the largest diameter light guide of the first light guide cable 10), the light guide cable 10 thus formed
each light guide 10, to 10n and the second light guide cable 20
As shown in FIG. 2, the light guides 20, .about.20n are arranged to face the respective grooves 31, .about. 32n is placed so as to face each of the grooves 31, to 31n of the connection scent piece 31, and both connection scent pieces 31 and 32 are fixed by any known fixing means (see FIG. 3). In this way, each of the light guides 10, ~10n and 20, ~20n have the same diameter, and they are clamped and fixed in the connection grooves 31, ~31n, and 32, ~32n as described above. If so, each light guide 10, to 10n and 20
, ~20n has its register regulated by these grooves,
aligned and connected and thus the first light conductor cable 1
It is possible to efficiently transmit the optical energy transmitted from 0 to the second optical conductor cable 20'. In addition, FIG. 4 is a sectional view taken along line W-W in FIG. 3, FIG. 5 is a sectional view taken along line V-V in FIG. 3, and FIG. 6 is a sectional view taken along line W- in FIG. show. As is clear from the above explanation, according to the present invention, concentrated solar energy can be efficiently introduced into the optical conductor cable, and in this way, the sunlight efficiently introduced into the optical conductor cable can be efficiently introduced into the optical conductor cable. Energy can be transmitted to other optical conductor cables that can be standardized at low cost and with little transmission loss by using connections that have a simple structure and high bonding efficiency, and can be efficiently transmitted to any desired location through the other optical conductor cables. can do.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of the end face structure of the optical conductor cable previously proposed by the present applicant, FIG. 2 is a block diagram showing one working process of the optical conductor cable connection method according to the present invention, and FIG. 4 is a sectional view taken along the line W-W in FIG. 3, FIG. 5 is a sectional view taken along the line V-V in FIG. 3, and FIG.
It is a sectional view taken along the line W- in the figure. 10...First optical conductor cable, 10,~10
...Light guide, 20...Second light guide cable, 201
~20n...Light guide, 30...Connector, 31, 32...・
・・Connection odor piece, 31, ~31n, 32・~32n...
···groove. Figure 1 Figure 2 Figure 4 Figure 3 Figure 5 Figure 6

Claims (1)

[Claims] 1. A method for connecting a first optical conductor cable consisting of a plurality of optical conductors having different diameters and a second optical conductor cable consisting of a plurality of optical conductors having the same diameter, the end face of the first optical conductor cable being In the step, an arbitrary number of the plurality of light guide cables are combined to have a diameter substantially equal to the diameter of the light guide of the second light guide cable, and each light guide cable formed in this way has substantially the same diameter. are held separately, and each optical conductor of the second cable is fixedly held by a connector having a plurality of grooves that holds each optical conductor of the second cable in opposition to an end surface of each optical conductor of the first cable. A method for connecting a light conductor cable, characterized in that: