CN100383581C - fiber optic display - Google Patents

Abstract

A fiber optic display, which includes a light source, an optical fiber bundle and a brightness modulation system, the optical fiber bundle includes a plurality of optical fibers, one end of the plurality of optical fibers constitutes a light incident end for receiving the light emitted by the light source, and the other One end constitutes a display end, and the brightness modulation system is arranged between the light incident end and the display end to change the bending degree of each optical fiber to adjust the light output intensity of each optical fiber at the display end. The optical fiber display may further include a color filter, an optical coupling component, a visible light bandpass filter, and a diffuser to realize color display or enhance display effect.

Description

fiber optic display

【Technical field】

The invention relates to a display, in particular to an optical fiber display.

【Background technique】

With the continuous development of science and technology in recent decades, various new display technologies have emerged as the times require. At present, the flat-panel displays of new display technologies mainly include liquid crystal displays (Liquid Crystal Display, LCD), plasma displays (Plasma Display Panel, PDP), projection displays and organic electroluminescent displays (Organic Light Emitting display, OLED).

For a fiber optic display in the prior art, reference may be made to Chinese Patent No. 97243700 published on June 23, 1999. The fiber optic display uses optical fibers in pixels to realize a larger display. As shown in Fig. 1, this optical fiber display comprises a projector 1, a reflection sheet 2, an optical fiber bundle head 3 and a imaging plate 4, wherein the optical fiber bundle head 3 is glued on the most compact arrangement mode by bundled optical fibers 302 The same plane, and the other end of the bundled optical fiber 302 is enlarged and arranged on the display panel 4 with a certain ratio. The image signal projected by the projector 1 is reflected by the reflective sheet 2 to the optical fiber bundle head 3 , transmitted through the bundled optical fiber 302 and displayed on the display panel 4 . The image signal of the optical fiber display needs to be generated by a projector, and the optical fiber bundle is only used for transmission.

【Content of invention】

In order to solve the problem in the prior art that the optical fiber display requires a projector to generate projection signals, the present invention provides an optical fiber display that directly modulates the light intensity on the optical fiber.

The technical solution adopted by the present invention to solve the technical problem is to provide an optical fiber display, which includes a light source, an optical fiber bundle and a brightness modulation system, and one end of a plurality of optical fibers in the optical fiber bundle constitutes a The light incident end of the light source emits light, and the other end constitutes a display end. The brightness modulation system is arranged between the light incidence end and the display end. The brightness modulation system includes a plurality of props, and every two of the The relative movement of the top column changes the bending degree of an optical fiber to adjust the light output intensity of each optical fiber at the display end.

Compared with the prior art, the optical fiber display of the present invention directly changes the propagating energy of the light in the optical fiber by using the light brightness modulation system, controls the light and dark state of the light signal on the display surface, and achieves the display purpose without using a projector.

The optical fiber display provided by the present invention may further include a color filter, an optical coupling component, a visible light bandpass filter, and a diffuser to realize color display or improve display effect.

【Description of drawings】

Fig. 1 is a structural schematic diagram of a fiber optic display in the prior art.

Fig. 2 is a schematic structural view of the first embodiment of the optical fiber display of the present invention.

3 to 4 are working diagrams of the optical switch of the first embodiment of the fiber optic display of the present invention.

5 to 6 are working diagrams of another structure of the optical switch in the first embodiment of the fiber optic display of the present invention.

Fig. 7 is a schematic structural view of the second embodiment of the fiber optic display of the present invention.

Fig. 8 is a schematic diagram of the color pattern arrangement of the color filter of the second embodiment of the fiber optic display of the present invention.

Fig. 9 is a schematic diagram of a microlens array of the second embodiment of the fiber optic display of the present invention.

Fig. 10 is a schematic diagram of the arrangement of optical fibers at the display end of the optical fiber bundle in the second embodiment of the optical fiber display of the present invention.

Fig. 11 is a schematic diagram of optical coupling of the second embodiment of the fiber optic display of the present invention.

Fig. 12 is a schematic structural view of the third embodiment of the optical fiber display of the present invention.

【Detailed ways】

Please refer to FIG. 2 , which is a schematic structural view of the first embodiment of the fiber optic display of the present invention. The optical fiber display includes a light source 21, an optical fiber bundle 27 and a brightness modulation system 29, wherein the optical fiber bundle 27 includes a plurality of optical fibers 272, wherein one end of the plurality of optical fibers 272 forms a light incident end for receiving the The light emitted by the light source 21 forms a display end at the other end. The light brightness modulation system 29 is arranged between the light incident end and the display end, and is used to control the bending degree of the optical fiber 272 in the optical fiber bundle 27 to realize brightness modulation.

Please refer to Fig. 3 to Fig. 4, this brightness modulating system 29 comprises a plurality of optical switches corresponding to the optical fibers 272 in the optical fiber bundle one by one, the optical switches comprise two telescopic top posts 32, 34, the top posts 32 and 34 are arranged in a staggered manner. Through relative expansion and contraction, the bending degree of the optical fiber 272 is changed, thereby changing the total reflection condition of the transmitted light in the optical fiber 272, and controlling the light transmission energy in the optical fiber, thereby realizing bright and dark display of different pixels. The expansion and contraction of the top columns 32 and 34 can be controlled by an electromagnetic relay device or a micro-electromechanical device.

Please refer to Fig. 5 to Fig. 6, the optical switch of the optical fiber display of the present invention can adopt another kind of structure, and its difference with the former optical switch structure is that this optical fiber 272 passes through the through hole of two props 52,54, The top pillars 52 and 54 change the degree of bending of the optical fiber 272 by stretching it, thereby changing the total reflection condition of the transmitted light in the optical fiber, controlling the light transmission energy in the optical fiber, and realizing bright and dark display of different pixels.

Please refer to FIG. 7 , which is a schematic structural diagram of the second embodiment of the fiber optic display of the present invention. The fiber optic display includes a light source 71 , a color filter 73 , an optical coupling component 75 , an optical fiber bundle 77 and a brightness modulation system 79 , wherein the optical fiber bundle includes a plurality of optical fibers 772 .

Please refer to Fig. 8, the color filter 73 is a color pattern 732 including three different colors of red (R), green (G) and blue (B), and the color pattern 732 can be printed, dyed (Dyeing), It is made by etching method (Etching), pigment dispersion method (PigmentDispersion) and other methods. The function of the color filter 73 is to convert the passing white light into three primary color light beams of red, green and blue.

Referring to FIGS. 9 to 10, the optical coupling assembly 75 is a micro-lens array including a plurality of micro-convex lens units 752, and the micro-convex lens units 752 correspond to the color pattern 732 of the color filter, and can be used to pass through the color pattern. The red, green and blue primary color lights filtered by 732 are coupled into the optical fiber 772 .

Please refer to FIG. 11 , the display end is composed of an arrangement of optical fibers 772. According to the different colors of light input at the light incident end, display pixels are formed according to combinations of red, yellow, and blue, and the display surface is composed of different display pixels.

The second embodiment of the present invention can realize color display, and improve light energy utilization rate and reduce energy loss through coupling components.

Please refer to FIG. 12, which is a schematic structural view of the third embodiment of the fiber optic display of the present invention. This embodiment includes a light source 121, a color filter 123, an optical coupling component 125, an optical fiber bundle 127 and a brightness modulation In addition to the system 129 , a bandpass filter 122 in the visible light range and a diffuser 124 are further arranged between the light source 121 and the color filter 123 . Since the light source emits ultraviolet wavelength light that reacts to glass and adhesives, and infrared wavelength light is likely to generate heat and increase the system temperature, the bandpass filter 122 in the visible light range is used to filter ultraviolet and infrared light to improve the temperature of the system. display effect. The diffuser 124 has a certain scattering function, which can make the emitted light of the light source 121 uniform. The band-pass filter in the visible light range can also be formed by combining infrared and ultraviolet cut-off filters.

The optical fiber display of the present invention is not limited to the above-mentioned embodiment, wherein, the color filter can also use a multilayer interference film, and the multilayer interference film can be fabricated on the back of the optical coupling component by evaporation or sputtering to realize an integrated change. The coupling component can also be integrally formed with the optical fiber to reduce coupling loss.

Claims (10)

1. optical fiber displays, it is characterized in that: comprise a light source, a fibre bundle and a luminance brightness modulation system, one end of the multifiber in this fibre bundle constitutes one in order to receive the light incident side that this light source emits beam, the other end constitutes a display end, this luminance brightness modulation system is arranged between this light incident side and this display end, this luminance brightness modulation system comprises a plurality of fore-sets, per two these fore-set relative motions change the degree of crook of an optical fiber, the light intensity that goes out of regulating this each optical fiber of display end.

2. optical fiber displays as claimed in claim 1 is characterized in that: optical fiber is corresponding one by one in per two these fore-sets and this fibre bundle.

3. optical fiber displays as claimed in claim 2 is characterized in that: per two these fore-sets are scalable and be staggered, and the corresponding optical fiber of its opposite end contact by changing this two fore-sets telescopic level, is controlled the light intensity that of this optical fiber.

4. optical fiber displays as claimed in claim 2 is characterized in that: per two these fore-sets are scalable and be staggered, and its top has through hole, this optical fiber passes this through hole, change this two fore-sets telescopic level,, control the light intensity that of this optical fiber in order to this optical fiber that stretches.

5. optical fiber displays as claimed in claim 1 is characterized in that: further comprise a colored filter, it is arranged between this light source and this fibre bundle light incident side, is used to produce three kinds of color of light of red, green, blue.

6. optical fiber displays as claimed in claim 5 is characterized in that: the optical fiber of this display surface forms a display pixel by three kinds of color combination of red, green, blue of its emergent light.

7. optical fiber displays as claimed in claim 1 is characterized in that: further comprise an optically-coupled assembly, it is arranged on the light incident side front end of this fibre bundle.

8. optical fiber displays as claimed in claim 7 is characterized in that: this optically-coupled assembly is one to comprise the lenticule row of a plurality of dimpling lens units, and this dimpling lens unit is corresponding one by one with the optical fiber of this light incident side.

9. optical fiber displays as claimed in claim 1 is characterized in that: further comprise the bandpass filter of a visible-range, this bandpass filter is provided with near this light source.

10. optical fiber displays as claimed in claim 9 is characterized in that: further comprise a diffusion sheet, this diffusion sheet is arranged between this light source and this fibre bundle light incident side.

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