JPS59124305A - Photoconductor - Google Patents

Abstract

PURPOSE:To improve the transmission efficiency of light energy with simple and inexpensive constitution and means by transmitting light through a photoconductor rod which is fixed and supported by a clad in a tube. CONSTITUTION:The solar light L focused by lenses 111-115 is introducedinto photoconductor cables 211-215 of which the photodetecting end faces are disposed at the focuses of the respective lenses. These photoconductor cables are bundled and are connected to a photoconductor 22 consisting of a photoconductor rod or optical transmission tube, etc. and is transmitted to an optional place. The rod 30 is fixed and supported by a clad 50 in a tube 40. The rod 30 is protected by such constitution and the leakage of light does not arise. The transmission efficiency of the light energy is thus improved with a simple and inexpensive constitution and means.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a light guide capable of efficiently transmitting large amounts of light energy.

The present applicant first focused solar light using lanes or the like, introduced it into a light guide cable, and transmitted it to any desired location through the light guide cable for use in lighting or other purposes. I proposed a device.

FIG. 1 is an overall perspective view for explaining an example of a sunlight collecting device previously proposed by the present applicant. In the figure, ■ is a cylindrical base portion, 2 is a transparent spherical body portion, These constitute the capsule 3 for the solar collector, and in use,
A sunlight collecting device section 10 is housed in the capsule as shown in the figure. This solar light collecting device unit 10 has a plurality of lenses 111''-fits, for example, 19 lenses arranged concentrically to focus sunlight in the direction of the sun.

A sunlight direction sensor 12 for detecting sunlight, a support frame 13 for holding the parts under body weight, a first motor 15 for rotating them in the direction of arrow A, and the lenses 111 to 1.
119 to a support arm 16 for supporting the motor 15; a rotating shaft 17 disposed perpendicular to the rotating shaft of the motor 15; and a second arm for rotating the rotating shaft 17 in the direction of arrow B.
2. It has a motor 18 (see FIG. 2), etc. 11. The direction of the sun is detected by the sunlight direction sensor 12, and the first and second motors are controlled based on the detection signal so that the lenses 111 to 1119 always face the direction of the sun. The sunlight focused by ~1119 is introduced into a large number of light guide cables 211~2119 (see Figure 2), etc. whose light receiving ends are arranged at each focal position of the lens, and any arbitrary light is transmitted through the light guide cables. The information is transmitted to the desired location.

FIG. 2 is a schematic configuration diagram of main parts for explaining the internal structure of the 1-fertilization solar collector, and in the figure, 14 is the first motor l.
54: first rotating shaft rotated accordingly; 18: second motor for rotating the second rotating shaft 17; 111-
115 is a lens, and these lenses 11. 115 correspond to the lenses 111 to 115 shown in FIG. ~ 215 and transmitted through the light guide cable to any desired location where it is provided for illumination or other use. However, in the illustrated example:
Each light guide cable is bundled and connected to a light guide 22, such as a light guide loft or light transmission tube, through which it is configured to be transmitted to any desired location. Therefore, in the illustrated example, the light guide 22 is arranged through the position of the lens 11.3 shown in FIG. 1, so that no lens corresponding to the lens 113 is used.

Therefore, in the solar collector device as described above,
It is also possible to directly transmit the sunlight introduced into the light guide cable to any desired location through the light guide cable, or to transmit the output light of all the light guide cables into the light guide rod 22 as shown in the illustrated example. It is also possible to transmit the light to any desired location through the guide rod, but in the former case, the amount of light guide cables used would be enormous and the cost would be high. In the latter case, the light guide rods currently on the market are made from materials used to make light guide cables or fibers, so there are no measures on their surfaces to prevent light leakage. Therefore, if the light guide rod is used as it is for transmitting light energy as described above, the surface is likely to be scratched, causing light leakage, and furthermore, it is difficult to support the light guide rod, and the supporting portion is difficult to support. There was a problem with the shade that leaked a lot of light. In addition, some devices are equipped with light leakage means, but in this case, quartz having a refractive index lower than that of the quartz core is used as a land. If the NA of the light passing through the cladding part is small, there is not much of a problem, but if the NA is large, there is a strong possibility that light will leak from the cladding part if it is scratched.

FIG. 3 is an external view showing an example of a light guide according to the present invention, in which 30 is a light guide rod made of quartz or the like, 31 is a polymer clad layer coated on the light guide rod 31, As a conventional product, 1. There are no products that are coated with a polymer cladding (all conventional products are one in which a flexible optical conductor such as an optical conductor cable or optical fiber is coated with a protective material such as a polymer). ).

Although the illustrated example shows a straight light guide, it is easy to make a curved light guide, and in that case, the straight light guide rod is heated to a predetermined temperature. The light guide rod is made flexible by heating, and the guide rod is formed into any desired shape, and then a cladding layer is coated on the second part of the light guide rod. In particular, the light guide shown in FIG. 3 is suitable for use in curved sections.This cladding layer can be applied, for example, by heating the light guide rod to a suitable temperature. This is done by inserting the cladding into the molten tank, pulling it out, drying it, and repeating this action multiple times.If the cladding is immersed in the cladding molten tank multiple times in this way, the cladding layers become multilayered, and the cladding layer becomes more solid.

FIG. 4 is a side sectional view for explaining another embodiment of the present invention, in which 3o is a light guide rod, 4° is a tube for housing the light guide rod, and 5o is the light guide. rod 30
In this way, the light guide rod 3o can be protected by the tube 4o, and the light guide rod 3o is supported by the tube 40 by the cladding 5o. Because there is no light leaking from this part, light energy can be transmitted efficiently. Although FIG. 4 shows an example in which a gap 60 is provided between the light guide rod 30 and the tube 40, this gap may also be filled with cladding.

The 51st threshold is - when manufacturing the light guide shown in FIG.
・This is a sectional view of main parts for explaining an example. In the figure, 30 is a light guide rod, 40 is a tube, and 70 is a jig.
has a four part 71 in the center into which the end of the light guide rod 30 is inserted, and a hole 72 communicating with the cavity 60. First, a jig 70 is attached to the tube 40 as shown in the figure. Then, the end of the light guide rod 30 is inserted into the four parts 71 of the jig 70, and the light guide rod 30 is inserted into the tube 4.
Support it so that it is approximately in the center of 0. Next 1. ), in this state, when the cladding solution is injected through the hole 72 of the jig 70, the gap 6 between the light guide lot 30 and the tube 40 is filled.
Since the cladding is filled with the cladding, by removing the jig 70 after drying the cladding, a light guide having the structure shown in FIG. 4 can be obtained. Note that, at this time, if the filling amount of the cladding solution is increased, the entire inside of the void 60 can be filled with the cladding. Furthermore, in the explanation below, the case where the cladding is filled between the light guide rod and the tube has been explained, but the present invention is not limited to the embodiment described in -. A short tube is made, the cladding tube is inserted into the end of the light pipe loft and glued with optical glue, the light guide with the cladding tube partially attached is inserted into the protective tube and the cladding tube is inserted into the end of the light pipe loft and glued with optical glue. The protective tube and the clat tube may be bonded with adhesive.

FIG. 6 is a sectional view for explaining an example of connecting the light guide shown in FIG.
60'a and 60b are voids, the left part with the suffix a constitutes one light guide (hereinafter referred to as light guide a), and the right part with the suffix A constitutes the other light guide (hereinafter referred to as light guide a). A light guide (hereinafter referred to as a light guide) is constructed and L/X is formed. Therefore, to connect these light guides a and b, first, the end of one tube 40b is made of a S)/horn (one member 80 is nQl, and the inner diameter is the light guide rods 30a, 30b.
Clara 1: Connecting tube 9 made of material with approximately the same external shape as
0 and - the screws installed at the ends of the tubes 40a (40b) (Fig. 5). It has a threaded part 101 that fits in the inside ψ, and the other end has a threaded part 40b.
(40a) A cuff having a protrusion lO2 provided at the end of the rfij strut cuff member 80.

The ring member 100 is prepared, and the ends of the light guides a and b manufactured as described above (the light guide lot 30
a and 30b into the connecting tube 90 as shown. The connecting tube 904 has a hole 91 at approximately the center of the tube 111, and light is transmitted through this hole 91. When '#+h' or glue is injected, the light guide 30a and 30b are optically coupled. In this state (also with 4 months),
Insert the coupling 100 from the end of the optical waveguide 1 (Figure 5i' b is rigidly connected. Note that if the coupling 100 is tightened too strongly, the light guide rod in the connecting tube 90 section may be damaged, so in that case, it is recommended to attach a reinforcing material to the outside of the connecting tube 90. .

As is clear from the explanation below-1-, according to the present invention,
It is possible to provide a light guide that can efficiently transmit a large amount of optical energy with a simple and inexpensive structure and means.

[Brief explanation of the drawing]

1 and 2 show a solar light collection device as an example in which the light guide according to the present invention is used. FIG. 1 is an overall perspective view, and FIG. 3 and 4 are sectional views showing an embodiment of the light guide according to the present invention, and FIG. 5 is shown in FIG. 4. - of the manufacturing method of the light guide
・A cross-sectional view of a main part for explaining an example. FIG. 6 is a cross-sectional view showing the connection part structure of the light guide shown in FIG. 4. 30, 30a, 30b - light guide lot, 31
...Polymer clad layer, 4o...Tube, 5
o...Clad, 60...Gap, 7o...Jig,
8o...stopper part, 9o...connecting tube,
loo...coupling. Figure l Figure O Figure 2 Figure 3 Figure 4 Figure 15 Figure 6

Claims (2)

[Claims] (1) A light guide 4661 consisting of a light guide rod and a cladding layer covering the light guide rod. (2) a light guide rod, a tube for accommodating the light guide rod, and a light guide rod interposed or filled between the light guide rod and the tube for fixing and supporting the guide rod within the tube; A light guide comprising a cladding.