CN1246625A

CN1246625A - Optical fibre display

Info

Publication number: CN1246625A
Application number: CN 99114239
Authority: CN
Inventors: 柏长勇
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-31
Filing date: 1999-05-31
Publication date: 2000-03-08
Anticipated expiration: 2019-05-31
Also published as: CN1099042C

Abstract

An optical fibre display is composed of display screen, scan system and controller, and features that said display screen is an optical fibre display screen and is connected to scan system via optical fibre, its input is connected to scan system and its output is connected to imaging plane (arranged and fixed to the imaging plane vertically or by a certain angle). Said scan system may be light-gun scan system or special purpose IC one. Its advantages are greatly reduced thickness and weight of display screen, high adaptability, easy connection, clear imaging under strong light and no environmental pollution.

Description

Optical fiber displays

The present invention relates to the display of a kind of computing machine, televisor, game machine etc., particularly a kind of optical fiber displays that utilizes light transmitting fiber imaging on display screen.

The kind of existing display is a lot, generally is made of display screen (being imaging surface), scanning system and control circuit.Use and mainly contain two kinds more widely: cathode-ray tube display (teletron) and LCD.The imaging surface of teletron is the screen that scribbles fluorescent powder, its scanning system is the electron gun of emission cathode ray and the deflection scanning device of cathode ray, by the emissive porwer of control circuit control electron gun and the scanning motion of cathode ray, cathode-ray exciting fluorescence forms image.Because the scanning of electron gun needs certain space, so the volume and weight of teletron is all bigger, the place of placement and placement condition all are restricted.Cathode-ray tube (CRT) need be provided with the high pressure of several ten thousand volts, causes potential safety hazard.The imaging surface of LCD is formed display screen by some liquid crystal arrangement, and its scanning system is each liquid crystal output signal with control circuit by different coordinates.The thickness of LCD is very little, and volume and weight is also all smaller, has a lot of advantages; But it has tighter restriction to viewing angle, watches from the side producing the blank screen phenomenon, and this has limited the area of LCD, has caused technology barrier for the manufacturing big screen LCD.Simultaneously, existing display technology all less than the demonstration problem that solves under the high light environment, that is: at the good display of room effect, just can't be seen clearly under daylight, and this becomes the technical barrier of work such as making large-scale outdoor displaying screen, billboard.In addition, all contain noxious material in teletron and the liquid crystal, discarded teletron and LCD reclaim difficulty, cause environmental pollution.

In order to overcome these deficiencies of prior art, the invention provides a kind of display of new construction, it should have smaller volume and weight, and thickness also can be very little, and it should have the adaptive faculty of comparison broadness to placement location and service condition.Simultaneously, this programme can enlarge the range of adjustment of display brightness, makes new display can both demonstrate image clearly indoor and outdoor.Do not contain Toxic matter in the solution of the present invention, high pressure need be set, can solve the pollution problem and the safety problem of traditional monitor.

The technical scheme of finishing above-mentioned task is to adopt optical fiber displays: the same with prior art, display is provided with display screen, scanning system and control circuit, it is characterized in that: the display screen of optical fiber displays is an optical fibre display screen, and optical fibre display screen is connected by optical fiber with scanning system.Here said optical fibre display screen is meant: its imaging surface back is fixed with one group of optical fiber of arranging in order, the input termination scanning system of optical fiber.The output terminal of optical fiber is arranged according to the form of two-dimensional coordinate, three-dimensional coordinate, spherical coordinates or multidimensional coordinate and to be fixed on the imaging surface, with the Surface Vertical of imaging surface or angled.Fixing means can be that bonding, hot melt connects or mechanical snap.The cross sectional shape of optical fiber end can be circular, rectangle, polygon or other shapes.All optical fiber is formed optical cable.Imaging surface in this programme can adopt transparent or semitransparent material to make, and this material can be a rigid material, also can be flexible material; Fluorescent material or other secondary luminescent substances can be applied on it, also this class material can be do not applied.Scanned imagery system (PSC) in this programme can adopt two class different schemes, i.e. light gun scanning system or special IC scanning system.The light gun scanning system is to be provided with one or many light guns (can adopt generating laser or other luminescent devices to make light gun), is provided with deflection scanning mechanism simultaneously.By deflection scanning mechanism the light beam that light gun sends is imported each light transmitting fiber successively.There are different schemes such as minute surface scanning mechanism, piezoelectrics oscillating scanning mechanism in the deflection scanning mechanism here.The special IC scanning system is: be to rearrange the face battle array by light-emitting component, it is measure-alike that its surface size and optical cable enter the mouth, and accurate combination, each luminous point is corresponding one by one with light transmitting fiber, control circuit receives picture intelligence and this face battle array is scanned at IC interior by scanning system simultaneously, press coordinate and give the light-emitting component output signal, form image on the face battle array, the picture transmission that will be made of optical fiber (transfer) is to imaging surface again.Said light-emitting component can be elements such as LED, LD.Distinguishingly say (promptly as special case): existing various imaging devices, as cathode-ray kinescope or LCD, all can be used as " imaging device " of this programme, in this special case, the technique effect of this programme only is to shift imaging surface.Special IC can adopt the PIC special IC, presses the difference of light-emitting component, can be divided into LED-PIC special IC and LD-PIC special IC.In the optical cable transmission course, can not do any processing to image; Also can do to amplify, dwindle or other processing.

The present invention adopts Optical Fiber Transmission and displayed image, because fibre-optic diameter is very little, can be below 10 microns, so when area is identical, this programme not only can increase the pixel number of display screen, improve image quality, and the thickness of display screen and weight are reduced significantly, make very lightly.Simultaneously its display screen can be arranged on two different places with the scanned imagery device, left volume greatly, to after the higher imaging device of environmental requirement, display screen can improve a lot to the adaptive faculty that the place is set.Easy to connect between the two places can be turned arbitrarily.Simultaneously, the brightness of this optical fiber displays can be regulated within a large range, can solve the clear imaging problem under high light.Do not contain Toxic matter among the present invention, high pressure need be set yet, solved the pollution problem and the safety problem of traditional monitor.Display screen with flexible material is made can fold, and transports, preserves, hangs all very convenient.

Be described further with embodiment in conjunction with the accompanying drawings now.

Fig. 1 is light gun minute surface scanning theory figure;

Fig. 2 is a fixedly synoptic diagram of optical fiber and imaging surface;

Fig. 3 is piezoelectrics scanning theory figure;

Fig. 4 is the optical cable connection diagram;

Fig. 5 is a PIC special IC schematic diagram.

Embodiment 1, light gun minute surface type scanner, and with reference to Fig. 1: be provided with three

light gun groups

5,6,7 in the scanning system, each light gun group is rearranged by the miniature laser rifle of some respectively, respectively red, blueness of emission and green laser.The quantity of laser gun is 1024 in this example, and the dot matrix of optical fiber inlet is 1024 * 1024.Picture intelligence is input to control circuit 9, and the point of each light gun goes out and carries out synchro control by control circuit 9 according to needed brightness.On the transmit direction of light gun group, be provided with a minute surface group disk 2, disk is provided with some minute surfaces 3, the angle difference of every minute surface, and corresponding with row or delegation's optical fiber.The rotation of disk is by control circuit 9, by stepper motor 8 controls.When for example the scan period was 50Hz, the quantity of establishing minute surface 3 was 1024, and then the rotating speed of stepper motor is 3000rpm.Light gun group emitted laser along light path 4, through the reflection of minute surface 3, enters the optical cable inlet.Because the motion of minute surface group disk by the picture intelligence synchro control, so three light gun groups are finished visual scanning jointly with minute surface group disk, forms image at optical cable 1 place that enters the mouth by control circuit, the optical cable of being made up of light transmitting fiber is transferred to imaging surface again.Control circuit receives digital image signal, 2 dimension images for example, and the red, green, blue three chromatic number certificates of each coordinate points, and be kept in the buffer zone of oneself to the data of major general's one width of cloth picture.Control circuit is delivered to respectively on the

light gun group

5,6,7 simultaneously by the row or the delegation of certain frequency with image, simultaneously stepper motor 8 is sent step-by-step impulse, make minute surface 3 and light path 4 synchronous, thereby correctly picture intelligence is delivered on the column or row of needed optical cable inlet.With reference to Fig. 2: the diameter of every optical fiber 11 output terminals strengthens gradually in this example, makes toroidal, to increase the area of display screen 12.

Embodiment 2, piezoelectrics scanning.Ultimate principle is to utilize piezoelectrics (for example piezoelectric ceramics or piezoelectric crystal) to change the characteristic of self shape along with the change that applies the voltage on it, obtains the scan deflection angle of high frequency conversion.Identical with last example, trichromatic three groups of light guns are set, the point of every light gun goes out by the requirement control of control circuit by picture intelligence.With reference to Fig. 3: light path is provided with minute surface 3, and minute surface 3 is fixed on the piezoelectrics 10, by control circuit 9 angle on demand to piezoelectrics laterally and vertically apply certain voltage.The light signal of

light gun group

5,6,7 projects on the optical cable inlet 1 through the reflection of minute surface 3.By control circuit 9 angle on demand laterally reaching of piezoelectrics vertically applied certain voltage, it is produced laterally or deflection longitudinally, and drive deflection mirror surface on it, thus will project from the light signal of

light gun

5,6,7 on the difference of optical cable inlet, realize the scanning of picture intelligence.As required, laterally with sweep frequency can be inequality longitudinally.With number of picture elements x * y=1024 * 1024, frequency 50Hz is an example: when

light gun

5,6,7 each group were all only established a light gun, the sweep frequency of X direction was 1024 * 1024 * 50=52.48MHz; The sweep frequency of y direction is 1024 * 50=51.2KHz.

Embodiment 3, and piezoelectrics scanning black-white display is basic identical with last example, but so-called " three groups of light guns " only establishes a light gun, show soot-and-whitewash.

Embodiment 4, PIC special IC scheme.With reference to Fig. 4: the surface of LED-PIC special IC is rearranged by LED.Every bit all comprises Red Green Blue, by control circuit control, need send the light of shades of colour and intensity by image.It is measure-alike that the surface size of LED-PIC and optical cable enter the mouth, and accurate combination, and each luminous point is corresponding one by one with light transmitting fiber.Optical cable is fixed on the imaging surface (display screen) 12.The part 2 of LED-PIC is visual receiving unit, with reference to Fig. 5: adopt parallel data line and address wire (for example 32bit data line and 32bit address wire) to receive outside digital image signal, and signal is kept in the buffer zone of oneself, this buffer zone can be preserved the image of a width of cloth picture at least, for example 1024 * 1024 * 3 data.The third part of LED-PIC is a driving circuit.This part is delivered to the pictorial data of buffer zone each point on the corresponding LED through the D/A conversion, makes it send needed light.The inversion frequency of every bit is definite according to sweep frequency, for example 50Hz.

Embodiment 5, the LD-PIC integrated circuit.Basic identical with last example, but adopt laser diode LD to rearrange the surface of PIC.

Claims

1, a kind of optical fiber displays, be provided with display screen, scanned imagery system and control circuit, it is characterized in that: the display screen of display is an optical fibre display screen, optical fibre display screen is connected by optical fiber with the scanned imagery system, said optical fibre display screen is meant: orderly one group of optical fiber arranging, its input termination scanned imagery system, output terminal connects imaging surface, the output terminal of optical fiber, arrange by the form of two-dimensional coordinate, three-dimensional coordinate, spherical coordinates or multidimensional coordinate and to be fixed on the imaging surface, with the Surface Vertical of imaging surface or angled.

2, according to the described optical fiber displays of claim 1, it is characterized in that: said scanned imagery system comprises light gun scanning system or special IC scanning system.

3, according to the described optical fiber displays of claim 2, it is characterized in that: the light gun scanning system is provided with one or many light guns, is provided with deflection scanning mechanism simultaneously, and said deflection scanning mechanism is minute surface scanning mechanism or piezoelectrics oscillating scanning mechanism.

4, according to the described optical fiber displays of claim 3, it is characterized in that: said minute surface scanning mechanism is provided with a minute surface group disk, disk is provided with some minute surfaces, the angle of every minute surface is corresponding with row or delegation's optical fiber, the rotation of disk is passed through step motor control by control circuit, light gun group emitted laser along the reflection of light path through minute surface, enters the optical cable inlet.

5, according to the described optical fiber displays of claim 3, it is characterized in that: said piezoelectrics scanning mechanism is: light path is provided with minute surface, minute surface is fixed on the piezoelectrics, by control circuit angle on demand laterally reaching of piezoelectrics vertically applied voltage, the light signal of light gun group projects on the optical cable inlet through the reflection of minute surface.

6, the optical fiber displays of stating according to claim 2, it is characterized in that: said special IC scanning system is: be to rearrange the face battle array by light-emitting component, it is measure-alike that its surface size and optical cable enter the mouth, and accurate combination, each luminous point is corresponding one by one with light transmitting fiber, control circuit receives picture intelligence and this face battle array is scanned at IC interior by scanning system simultaneously, press coordinate and give the light-emitting component output signal, form image on the face battle array, the picture transmission that will be made of optical fiber is to imaging surface again.

7, according to the described optical fiber displays of claim 6, it is characterized in that: said special IC scanning system is the PIC special IC.

8, according to the described optical fiber displays of claim 7, it is characterized in that: the PIC special IC comprises LED-PIC integrated circuit or LD-PIC integrated circuit.

9, show according to the described optical fiber of claim 8, it is characterized in that: also be provided with visual receiving unit, receive outside digital image signal with parallel data line and address wire, and signal is kept in the buffer zone of oneself, this buffer zone is preserved the image of a width of cloth picture at least, be provided with driving circuit simultaneously, the pictorial data of buffer zone each point is delivered on the corresponding LED through the D/A conversion.

10, according to the described optical fiber displays of one of claim 1-9, it is characterized in that: the diameter of every optical fiber of fiber-optic output strengthens gradually, makes toroidal.