JPS58224307A - Production of photoconductor made of optical fiber - Google Patents

Abstract

PURPOSE:To enable the easy manufacture of a titled photoconductor by dipping the forward end parts of optical fiber groups in the state of having the projecting forward end parts into a fluidized compd. and solidifying the same to one body thereby solidifying the forward ends of a large number of the optical fiber groups to one body with good efficiency. CONSTITUTION:Holding members 2 consisting of bar-like partition materials 22 and circumferential frames 21 are freely attachable and detachable, and in the stage of arranging and holding optical fiber groups 1, said members and groups are assembled like a drainboard. The fiber groups 1 are arranged longitudinally and transversely at prescribed intervals by using the members 2, and the fiber groups are held in the state of having the projecting forward ends. The assembly is contained in a shallow tray-like tank 3. A compd. 4 in a fluidized state is contained in the tank 3 in this stage, and the forward ends of the groups 1 are dipped therein. The length l of the forward ends of the fibers 1 is generally about 0.5-5mm., and the liquid level of the compd. 4 is made slightly lower than the same. If the compd. 4 is solidifed, the forward ends of the groups 1 and the compd. 4 are solidified to one body. The photoconductor arranged with a large number of the fiber groups 1 at prescribed intervals is manufactured with good efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a display device using optical fiber as a light guide.
The present invention relates to a method for efficiently manufacturing a light guide for use in optical fibers or other industrial materials using optical fibers.

Illuminated display devices that use optical fiber as a light guide have the advantage of being energy-saving because they require a single or limited number of light sources, and that the light source is easy to maintain and inspect. Moreover, since a wide variety of decorative effects or display effects can be obtained, it has recently become popular as a display device such as a display or a signboard.

By the way, in this illuminated display bag using optical fibers, one end of a large number of optical fibers is fixed to fit the display panel σ), and the other end is focused and installed near the light source. ing. When manufacturing these display devices, the most labor-intensive work is the process of fixing the optical fibers to the display board. In general, the tips of the optical fibers are manually inserted into the display board, which has been punched in predetermined positions.
They are inserted one by one and fixed with adhesive, etc. □Therefore, production efficiency is extremely low and processing costs are high.
As the number of optical fibers used increases, there is a problem in that it takes an enormous amount of time to manufacture. In addition, for certain kinds of industrial red materials, it is necessary to arrange and fix one or both ends of a group of optical fibers in the same way to form a light guide, but as above, it is difficult to use such a light guide in one efficiency. It was difficult to produce well.

The present invention has been made in view of the above circumstances, and its gist is to provide a group of optical fibers (σ) arranged at predetermined intervals by a detachable holding member and held so that the tips protrude. This is a method for manufacturing an optical fiber light guide, which is characterized in that the tip thereof is immersed in a compound in a fluid state, and then solidified and integrated in this state.

Hereinafter, the present invention will be described in detail with reference to drawings of embodiments.

In the figure, (1) &ma are optical fiber groups, (g) are rod-shaped partitions (
U) and a holding member consisting of a surrounding frame (21), (3) is a tank, and III) is a compound. Among these, a holding member (2) consisting of a bar-shaped partition material (λ) and a surrounding frame (2/)
It is detachable and is assembled into a slatted shape when arranging and holding the optical fiber group (1) as shown in Fig. 1, and the G-compound is solidified and integrated as shown in Fig. 3. Time can be disassembled.

In the present invention, first, such a holding member (1) is used to arrange the optical fiber group (1) at predetermined intervals vertically and horizontally and to hold the optical fiber group (1) in a state in which the tips thereof are projected.

Next, this is stored in a shallow dish-shaped tank (3) as shown in Figure 7, but at this time, the compound (<') in a fluid state is in the tank (3) as shown in Figure 1. The tip of the optical fiber group (1) is immersed in the compound (41). The tip of the optical fiber group (1) at this time will be the part that will be embedded in the compound (q') when solidified as shown in Figure 3, so the length of the tip /) should be determined with this point in mind. Although it is determined, it is generally about 0.3-k'n, and the liquid level of compound (4I) is preferably slightly lower than this.

Once this state is reached, let the compound (da) solidify,
The tip of the optical fiber group (1) and the compound (+) are integrated. The light guide obtained as a result of the above is a solidified compound (q pieces are integrated like a substrate) as shown in FIG.

Although not shown, after the compound solidifies, the holding member (
, 2) and the surrounding frame (3)
is decomposed and removed. Since the present invention comprises the steps as described above, it is possible to efficiently manufacture a light guide in which a large number of optical fiber groups (1) are arranged at predetermined intervals. Note that the light guide used as the display body of the display device is an optical fiber group (1)
Generally, one end of the material is solidified by the method described above, and the other end is used as a bundle.

As optical fibers used in the present invention, synthetic resin optical fibers such as acrylic threads and styrene threads are generally used for display purposes (σ), but are not limited to these, and glass threads are used for industrial purposes. Optical fibers can be used. In addition, as the compound (lI) in a fluid state, room temperature or heat curing synthetic polymer compounds such as acrylic resin, unsaturated polyester resin, olefin resin with a relatively low melting point, etc. can be used. When using resin-based optical fibers, it is necessary to select a compound that will not be attacked by solvents or heat. Further, when the tank (J) is made of a transparent material such as glass, it is also possible to use an ultraviolet curable compound and to solidify it by irradiating ultraviolet rays from the outside.

Since the present invention has the configuration as described in detail above, the tips of a large number of optical fiber groups can be efficiently solidified and integrated, and light guides used for displays and other purposes can be easily manufactured. It has the advantage of being able to be manufactured at °□

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 shows a perspective view of a part of a state in which an optical fiber group is held, and Fig. 2 shows a state in which the tip of an optical fiber group is immersed in a compound. FIG. 3 is a perspective view of the light guide obtained according to the present invention. - Surrounding frame + C-i, 2. )...Partition material (3...tank (da), (q...compound

Claims (1)

[Scope of Claims] A group of optical fibers arranged at predetermined intervals by removable retainers and held so that the tips thereof protrude.) The tips of the optical fibers are brought into a fluid state. 1. A method for producing an optical fiber light guide, which comprises immersing it in a compound and solidifying it in this state to integrate it.