JPS6014281A - Display unit using optical fiber - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display device using an optical fiber that displays one character, one figure, etc.

Conventionally, display devices used in electronic devices include those using neon tubes, CRTs (cathode ray tubes), and LgD.

, those using fluorescent tubes, those using liquid crystal, etc.

Although there are various types, all of them have a display part in the display device itself. Therefore, in any of the conventional display means described above, it is essentially impossible to miniaturize the display device itself. In addition, the image pattern to be displayed is formed using something other than light (for example, in the form of electrodes in neon tubes, fluorescent tubes, liquid crystals, etc.; in CRTs, planar patterns of charges; in LI
Since D is the arrangement of the elements themselves, the configuration is complicated.

The present invention was made in consideration of the above circumstances, and the tip of the optical fiber 2x is swung in the Y direction at a predetermined speed for one period.
It is an object of the present invention to provide a display device using an optical fiber that can be simplified in configuration and easily miniaturized by drawing patterns such as letters and figures directly on a screen using light emitted from the tip of the optical fiber. purpose.

An embodiment of the present invention will be described below with reference to the drawings. 1st
Figures (a), (b), and Figure 2 show the configuration of essential parts according to an embodiment of the present invention.

I is an optical fiber, 2 is a fixture, 3 and 4 are each =
5 is a small piece of magnetic material attached to the tip edge of the optical fiber J, 6 is a light emitter using a light emitting element such as an LED, and 2 is a transparent screen.

FIG. 3 is a circuit block diagram in one embodiment of the present invention, in which xr represents a pattern generation circuit.

12 is a synchronous switching circuit; 13 is an X-direction oscillation circuit that excites the magnet 4; and 14 is a Y-direction oscillation circuit that excites the electromagnet 3.

Figure 4 shows a screen created by shaking the tip of optical fiber I? It is a diagram showing the above example of phototaxis and its display example.

Here, the operation of one embodiment will be explained. The optical fiber I is fixedly supported by the fixture 2 to form a cantilever beam, and is supported by the elastic force of the fiber body.

A distal end portion that emits light almost in parallel is supported in a movable manner. Here, by magnetizing the electromagnet 3.4 and attracting (or repelling) the small magnetic piece 5, the bending angle of the tip of the optical fiber I changes from the equilibrium state, and as shown in FIG. ” The spot position of the second light changes. Here, since L m tan θ in D, even if θ is minute, if L is sufficiently large, D can be made to a desired size. Therefore, the tip i of the optical fiber I
1 X-direction oscillation circuit for causing displacement vibration in the X-direction and the Y-direction 13. and Y-direction oscillation circuit I4, Ichibanishi 3.
4, it is possible to draw scanning lines in a plane on the screen 2, as shown in FIG.

At this time, by blinking the light emitter 6, any two character strings or other patterns/images can be displayed on the screen z.

As mentioned above, the cantilever-shaped original fiber 1 with the small magnetic piece 5 housed at the tip is displaced in the X and Y directions by the F4 magnet 3°4, and the light emitted from the tip of the optical fiber IO is 3. By adopting a configuration in which patterns, images, etc. are displayed on the rescreen 2 by control, there is essentially no need to incorporate the display surface into the device itself, and the display surface can be made extremely thin. Furthermore, the structure is simplified because the pattern is directly formed using light itself, without forming one display pattern in advance as a shape of a sleep pole or a charge on a screen.

By converting the control circuit into an IC, etc., ultra-miniaturization can be easily realized, and a display device can be provided at low cost.

In the above-described embodiment, the tip of one optical fiber 1 is swung in the X and Y directions, or m several optical fibers are swung in the lx direction.

Alternatively, they may be arranged in the Y direction and each tip thereof may be swung in the same direction (X direction or Y direction) at the same time.

As described in detail above, according to the present invention, the tip of the optical fiber is swung in the X and Y directions at a predetermined speed with one period, and the light emitted from the tip of the optical fiber is directly used to print characters 2 on the screen. By having a configuration that draws patterns such as figures, it is possible to provide a display device using optical fibers that has a simple configuration and can be easily miniaturized.

[Brief explanation of the drawing]

The drawings are for explaining one embodiment of the present invention. Fig. 1 (a) is a side view showing the configuration of the main parts, Fig. 1 (b) is a side view of the same year, and Fig. 2 explains the display operation. FIG. 3 is a circuit block diagram, and FIG. 4 is a diagram showing an example of scanning. I... Optical fiber, 2... Fixture, 3.4...
Electromagnet, 5... Small piece of magnetic material, 6... Light emitter, ?・・・
·screen. Applicant Sub-Agent Patent Attorney Suzu Ushiki Hiko No. 11 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] An optical fiber having a small magnetic piece attached to its tip and attached so that one end forms a cantilever beam. a light emitter attached to one end of the optical fiber;
iJ mark the small magnetic piece at the tip of the optical fiber. Two sets of electromagnets attached to the vertical and horizontal planes of the magnetic piece vibrate in the Y direction, and the tip of the optical fiber.
an oscillation circuit that excites the two sets of electromagnets for displacement vibration in the lx and y directions; A display device using an optical fiber, comprising a screen on which characters or patterns are formed by scanning by displacement vibration of the optical fiber and light emission control of the light emitter.