JPS62115117A - Time dividing distributor for light energy - Google Patents

Abstract

PURPOSE:To effectively utilize light energy by effectively and time dividedly distributing the light energy propagated in a single photoconductor to plural points. CONSTITUTION:The doughnut-shaped photoconductor disk 7 has a hole into which a photoconductor rod 2 is inserted. Flat photoconductor cables 8 are bundled with many pieces of optical fibers 8a to a flat plate shape as shown in a magnified figure and are arranged longitudinally along the outside peripheral face of the disk 7. The light energy is successively introduced into the respective cables 8 when the sloped reflective surface 2a of the rod 2 is rotated. The culture of chlorella is effectively executed if the output energy of each cable 2 is conducted to the culture soil for, for example, chlorella and if the rotating speed at the sloped reflective end face is preset at a desired value.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a time-division distribution device for optical energy, and more particularly, to a time-division distribution device for optical energy, and more particularly, for time-division of optical energy propagated within a single optical waveguide into a plurality of optical waveguides by time sharing. In this way, the light energy can be distributed and supplied, thereby making effective use of light energy.

The applicant first focuses solar energy or artificial light energy using a lens or the like and introduces it into a light guide,
Various proposals have been made for transmitting the light to any desired location through the guide body for illumination or other uses. Various proposals have also been made regarding the use of the light energy transmitted within the light guide as described above as a light source for photosynthesis reaction of chlorella, etc., or as a light source for forced cultivation of tomatoes, etc. Therefore, when culturing Chlorella etc., the amount of light required for one photosynthesis reaction process is approximately 1-oOμ.
During the remaining period of approximately 10m5, dark reactions (thermochemical reactions) that do not require light proceed, and during this remaining period, photosynthesis occurs more effectively in the absence of light. etc., rather than continuously supplying light energy,
The present applicant has already proposed that the transfer of photosynthetic substances within the plant body is carried out more effectively when light energy is supplied at predetermined time intervals (for example, Japanese Patent Application No. 1.7238/1982). , patent application 1986-224
．． 1.50). In addition, regarding human vision 1゛L, even if the supply of light is cut off, humans still feel the afterimage for a while.
Therefore, it is well known that it is not necessarily necessary to continuously supply optical energy. Considering these points, it is possible to sufficiently achieve the intended purpose even if the light energy is not continuously supplied, in other words, the light energy is supplied discontinuously, or, Discontinuous supply may be able to achieve the desired goal more effectively, but in particular, even if you try to supply light energy continuously for a long time with short discontinuous time intervals. It is almost impossible to obtain a light source with such fast rise and fall speeds, and even if it were possible, there would be problems in terms of cost, lifespan, etc. In addition, even in cases where the light energy -3 = is repeatedly flashed with discontinuity in units of time, such as in plant cultivation, if the lighting area is wide or there are multiple areas, generally speaking,
Multiple light sources are required, and each light source must blink at a predetermined time interval, but doing so increases the number of light sources, increases costs, and is difficult to maintain and manage. .

The present invention was made in view of the above-mentioned circumstances, and
In particular, the light energy propagated within a single light guide can be effectively time-multiplexed and distributed to multiple locations;
This aims at more effective use of light energy.

FIG. 1 is a configuration diagram for explaining the operating principle of the present invention, where (A,) is a side view ((B) is a sectional view taken along the line A-A),
Figure (B) shows a sectional view taken along line B-B of figure (A), and in the figure, ]
is a light guide cable, 2 is a cylindrical first light guide rod,
3a and 3b are light guide paths (light guide rods), 4 is a rotational or rotational guide member, and 5 is a connection between the rotational or rotational guide member 4 and the first
A connecting member 6 connects the light guide rod 2 with the light guide rod 2, and 6 is a driving means for rotation or -4 = rotation, and for rotation, a motor, for rotation, a motor, or, Solenoids etc. are used. A device for concentrating sunlight or artificial light is provided at the end (not shown) of the optical conductor cable 1, and the light energy focused by the device is applied to the optical conductor cable 1 at the end. and is transmitted through the optical fiber cable. The first light guide rod 2 is rotatably connected to the light guide cable 1 via optical oil or the like, and is connected to the motor 6.
rotated or rotated by Further, the lower end of the first light guide rod 2 is formed with an inclined reflective end face 2a, and the light energy L transmitted through the light guide cable 1 as described above is reflected by the inclined reflective end face. It is reflected in a direction perpendicular to the axis of the first light guide rod 2.

The light guide paths 3a, 3b extend in a direction perpendicular to the rotation axis of the first light guide rod 2 at the position of the inclined reflective end surface 2a, and as described above,
It receives the light energy L reflected by a, but when the inclined reflective end face 2a faces the direction shown, the light guide path (
Light energy is supplied only to the light guide rod (light guide rod) 3a, and no light energy is supplied to the light guide path (light guide rod) 3b. However, when the first light guide rod 2 is rotated by 180° by the drive means 6, the light guide rod 3I)
Since light energy is supplied only to the light guide rod 3a and not to the light guide rod 3a, by rotating or rotating the first light guide rod 2 by 180° by the driving means 6,
The light energy L supplied to the first light guide rod 2 can be distributed and supplied to the second light guide rods 3a and 3b alternately, ie by time sharing. In this case, by changing the rotational speed or switching period of the driving means 6, the radiation period of the light energy emitted from the second light guide rods 3a and 3b can be arbitrarily changed. The driving means 6 is controlled depending on the purpose of using the light energy emitted from the rods 3a and 3b, for example, whether it is used for culturing chlorella, for illumination, or for forced cultivation of plants. The rotation speed or switching period may be set. The light-receiving ends 3a' and 3b' of the second light guide rods 3a and 3b cooperate to form a hole through which the first light guide rod 2 is inserted. light guide rod 3a
, 3b to form a hole through which the first light guide rod 2 is inserted, the first light guide rod can be rotated more stably within the hole, and light leakage loss can be minimized. can. However, when the inclined reflective end face 2a faces the second light guide rod 3a or 3b, the light energy transmitted through the first light guide rod 2 is efficiently transferred to the second light guide rod 3a or 3b. However, when facing in other directions, the leakage loss is large, so the direction of the inclined reflective end face 2a is set as follows.
It is suitable for forced cultivation of plants, etc., where the light energy is changed at a rate of about once every two hours, but it is not suitable for use, such as cultivation of chlorella, where the light energy supplied to the second light guide rods 3a, 3b is frequently changed. do not have.

FIG. 2 is a configuration diagram for explaining one embodiment of the present invention. In the figure, 7 is a donut-shaped light guide disk having a hole through which the first light guide rod 2 is inserted, and 8 is ( C) As shown enlarged in the figure, a flat optical conductor cable is made by bundling a large number of optical fibers 88 into a flat plate, and the flat optical conductor cables 8 are arranged vertically along the outer peripheral surface of the optical conductor disk 7. has been done. Therefore, according to the present invention, when the inclined reflective end surface 2a of the light guide rod 2 is rotated, light energy is sequentially introduced into each guide cable 8, so that the light energy emitted from each guide cable is transferred to a chlorella culture device or the like. If the rotation speed of the inclined reflective end face is set to a desired value, chlorella can be cultured more effectively. FIGS. 2(D) to 2(F) are views showing other embodiments of the flat optical conductor cable, and FIG. 2(D) is a diagram showing another embodiment of the flat optical conductor cable.
An example of alternately arranging medium-height flat cables 8 and rising-height flat cables 8' as shown in the figure, (E) is as follows:
An example of configuring a flat optical fiber cable 8 by arranging optical fibers 8a in a row, Figure (F) shows a flat optical conductor rod 8, and the light receiving ends of a large number of optical fibers 9 are glued to the light output end side of the flat optical conductor rod 8. Although examples are shown, it is easy to understand that the present invention is not limited to these examples, and that various other modifications are possible. FIG. 2(G) is a diagram showing a modified embodiment of the light guide disk 7. In this embodiment, as shown in the figure, the upper surface 7' and the lower surface 7'' are tapered to increase the optical energy density. However, conversely, the light energy density may be reduced by forming the light beam in a widening direction.

FIG. 3(A) is a main part configuration diagram for explaining another embodiment of the present invention, and in the figure, 12 is a fan-shaped light guide formed concentrically with the first light guide rod 2. , whose thickness φ is the first
The diameter of the first light guide rod 2 is equal to the diameter of the first light guide rod 2, and a light receiving end of a light guide cable 13 having a diameter substantially equal to the diameter of the first light guide rod 2 is disposed on its outer peripheral surface.

Therefore, according to this embodiment, when the inclined reflective end face 2a of the first light guide rod 2 is rotated within the angle of the sector-shaped light guide 12, each light guide cable 13 receives reflected light from the inclined reflective end face 2a. It is distributed in time division and supplied sequentially.

FIG. 3(B) is a perspective view of a main part showing an improved example of the embodiment shown in FIG. 3(A). It is formed in 12a,
In this way, the side edges of the fan-shaped light guide 12 coincide with the side edges of the light energy reflected from the inclined reflective end surface 2a of the first light guide rod 2, and the light energy reflected from the inclined reflective end surface 2a is aligned. can be used more effectively,
At the same time, in the embodiment shown in FIG. 3(A), the light leaked from each P portion where the plane and the side surface of the fan-shaped light guide 12 intersect can be further reduced by making it as shown in FIG. 3(B). be able to. Although FIG. 3(B) shows an example in which a large number of optical fibers 9 are disposed on the outer circumferential surface of the fan-shaped light guide 12, this embodiment also has the same structure as shown in FIG. 3(A). It is also possible to use a light conductor cable 13 like this.

As is clear from the above description, according to the present invention, optical energy can be efficiently time-divided and supplied at high speed with a simple and inexpensive configuration, and therefore optical energy can be used effectively. can.

[Brief Description of the Drawings] Fig. 1 is a configuration diagram for explaining the operating principle of the present invention, in which (A) is a side sectional view taken along the line A-A in (B), and (B) is a ( A) A sectional view taken along the line 1'3-B in the figure, FIG. 2 is a configuration diagram for explaining an embodiment of the present invention, and FIG. B) Figure is a sectional view taken along line l'3-B of Figure (A), Figures (C) to (F) are enlarged end views of the optical conductor cable 8, and Figure 2 (G) is a cross-sectional view taken along line l'3-B of Figure (A). ) and (n) are perspective views showing modified embodiments of the donut light collecting conductor disk 7, and FIG. 3 is a perspective view for explaining another embodiment of the present invention. 1.1''...Light guide cable 2.2I...First light guide rod, 3a to 3f...Light guide path (second light guide rod), 4...Rotation guide member, 5...・・Connection member,
6... Drive means, 7... Donut light collecting conductor disk, 8
．． 8'... Flat light guide cable, 9... Optical fiber, 10.11... Gear, 12... Fan-shaped light guide. Figure 2 CDI (E) tF) +G+ Figure 3 (,4)

Claims (4)

[Claims] (1) A light energy time-division distribution device for time-divisionally distributing light energy transmitted through a single light guide to a plurality of light guides, the device comprising: an end face into which light energy is introduced; a cylindrical first light guide rod having an inclined reflective end surface that reflects the light energy in a direction perpendicular to the traveling direction of the light energy; and rotating or rotating the first light guide rod. and a donut-shaped light guide disk having a hole through which the inclined reflective end face of the first light guide rod is inserted, and a light receiving surface of the light guide cable is provided on the outer peripheral surface of the light guide disk. What is claimed is: 1. A light energy time-division distribution device characterized in that a light energy time-division distribution device is arranged. (2) The light energy time division distribution device according to claim (1), wherein the upper and lower surfaces of the donut-shaped inner plate are inclined. (3) A light energy time-division distribution device for time-divisionally distributing light energy transmitted through a single light guide to a plurality of light guides, the device comprising: an end face into which light energy is introduced; a cylindrical light guide rod having an inclined reflective end surface that reflects the reflected light energy in a direction perpendicular to the traveling direction of the light energy, a driving means for rotating the light guide rod, and a drive means for rotating the light guide rod; a fan-shaped light guide disposed concentrically with the light guide rod opposite to the inclined reflective end face of the light guide rod, and having a thickness substantially equal to the diameter of the light guide rod, and an outer circumferential surface of the sector-shaped light guide. A light energy time-division distribution device characterized in that a light receiving end face of a light conductor cable is disposed at the end face of a light conductor cable. (4) Time-division distribution of light energy according to claim (3), wherein both sides of the fan-shaped light guide are semicircular with a diameter equal to the thickness of the fan-shaped light guide. Device.