CN1337827A - Laser display method and device for video image - Google Patents
Laser display method and device for video image Download PDFInfo
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- CN1337827A CN1337827A CN 01131494 CN01131494A CN1337827A CN 1337827 A CN1337827 A CN 1337827A CN 01131494 CN01131494 CN 01131494 CN 01131494 A CN01131494 A CN 01131494A CN 1337827 A CN1337827 A CN 1337827A
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Abstract
The invention discloses a method to show a video frequency image by using laser and its display device. The display device is composed of diode array or semiconductor laser, scanning facility and image receiving screen. Scanning the diode array in one direction forms a video frequency image. Comparing with present large screen display, the invented display device provides merits of lower cost, high brightness, lightweight, low power consumption and high efficiency. Since the one directional scanning facility is used in the invention instead of relative difficult quick speed line scanning method, it reduces producing difficulty and increase displaying quality.
Description
(1) technical field:
The invention belongs to video image Display Technique field, relate in particular to laser video display packing and display.
(2) background technology:
Because laser has high directivity, monochromaticjty is good, and the brightness height so large screen television clear picture, the color made with laser are true to nature, brightness can be accomplished very highly, is watched outdoor with activation.The laser large screen TV mainly comprises laser, optical modulator, light deflector and screen etc.With a picture tube or projection tube analogy mutually, the laser large screen TV replaces electron beam with light beam.The laser that produces light beam is equivalent to produce the electron gun of electron beam.Optical modulator is equivalent to the control grid in the picture tube.Light deflector is equivalent to the deflecting coil in the picture tube.Screen is equivalent to phosphor screen.The picture signal that television receiver receives, through after the processing and amplifying, by the power of light modulator modulates light beam, field, line synchronizing signal are controlled light deflector by synchronous scanning circuit, make light beam according to certain rule deflection, scan composing images in screen.With laser that can produce three kinds of light beams of red, green, blue and corresponding optical modulator, make the light beam of three kinds of colors mix the each point that projects screen respectively in varing proportions, just can realize the large color screen TV.The laser large screen TV has some specific requirements to laser.At first, the light that sends of laser should be visible light.Show in order to carry out colour, preferably three kinds of primary lights of red, green, blue.Secondly, enough light intensity be arranged, so just can be that large screen television has enough brightness, even can be in outdoor projection in the daytime.Traditional laser large screen TV adopts gas laser, for example argon ion laser and krypton ion laser.The former can output wavelength be the blue light of 4880 dusts and the green glow of 5145 dusts, and the latter can output wavelength be the ruddiness of 6471 dusts, and the power of their output is also bigger.The task of optical modulator is that the signal of telecommunication is converted into light signal.The method that realizes light modulation is a lot.In the laser large screen TV, extensively adopt the method for " electrooptic modulation ".It mainly is to utilize photoelectric effect to change polarized state of light to realize the modulation of light.Light deflector is realized with the multiaspect mirror drum in the laser large screen TV.In order to obtain stable image, scanning motion must be accurately synchronous with transmitting terminal; Scan angle is wanted enough greatly, could obtain large-area grating in screen under the not far situation of projection distance like this; Each specular light loss of multiaspect mirror drum is enough little, to guarantee higher display brightness; The Wavelength-independent of scan angle and light beam, otherwise will cause color distortion.There are some important disadvantages in traditional laser large screen TV: main problem is that efficient is too low, and inefficient main cause is laser, and its efficient generally can only be accomplished below the one thousandth.In addition, the life-span of laser also falls short of.Also have a problem to be light deflector.Light deflector is made up of row mirror drum and field lens drum, two mirror drums are all driven by electrode, the former is a high-speed electric expreess locomotive, the latter is a slowspeed machine, one of key factor that influences the image stabilization degree of the quality of high-speed electric expreess locomotive wherein, so in the laser large screen TV, high-speed electric expreess locomotive has become crucial parts.Even the use synchronous machine still can not guarantee to obtain stable image.Because motor always exists many shortcomings, for example rotating magnetic field is even inadequately, the moment variations that bearing friction causes etc., make rotating speed of motor that some swings always be arranged, consequently the initial phase of laser beam flying can not be consistent with transmitting terminal, just the starting point of each row can be swung within the specific limits, makes image twist in the horizontal direction, so that can't watch.Therefore, in circuit, must introduce high performance servo system.Though actual use of this light deflector that utilizes the multiaspect mirror drum to realize beam flying because its processing technology difficulty is big, and needs complicated servo system, uses also not very good.
(3) summary of the invention:
The objective of the invention is to provide a kind of semiconductor laser diode array that adopts by the display of folk prescription to scanning display video image.Make this display compare to have that cost is low, brightness is high, in light weight, low in energy consumption, efficient advantages of higher with existing large screen display.
Basic structure of the present invention mainly is made of semiconductor laser diode array 1, sweep mechanism 2 and image receiving screen 3 as shown in Figure 1.Semiconductor laser diode array 1 comprises the semiconductor laser diode of corresponding demonstration columns, at any time, each semiconductor laser diode send with respective column on visual corresponding light, project on the visual receiving screen 3 by sweep mechanism 2, form corresponding image.Basic functional principle of the present invention as shown in Figure 2, at first from vision signal, isolate red, green, blue image three-colo(u)r signal and frame synchronizing signal, wherein the three-colour image signal is controlled the light that three look semiconductor laser diode arrays 1 send respective strengths respectively after handling through transformation from serial to parallel, by with the look device, normally prism is exported after with three coloured light colour mixtures, under the control of frame synchronizing signal, sweep mechanism 2, be that light deflector is with fixing speed rotation, to invest image with the light of look device output accepts on the screen 3, so go round and begin again, can on visual receiving screen, obtain the dynamic video image
In order to reduce the thickness of equipment, and make portable complete machine, make the back projection type structure, promptly increase speculum in system, the light that semiconductor diode is sent reflexes to the image receiving screen.
The used semiconductor laser diode of the present invention is of a size of greater than 0.1mm, less than 5mm.
Beneficial effect of the present invention: 1. eikongen adopts semiconductor laser diode array to replace traditional gas discharge laser pipe, has reduced cost, has reduced volume, has improved efficient; 2. owing to adopted folk prescription to sweep mechanism, saved the quick line scanning mechanism of difficulty relatively, reduced manufacture difficulty, improved display quality.
(4) description of drawings:
Fig. 1 is a direct putting type structural representation of the present invention
Fig. 2 is a basic functional principle schematic diagram of the present invention
Fig. 3 is a back projection type structure side view of the present invention
Fig. 4 is a colored direct putting type structure side view of the present invention
Fig. 5 is a colored back projection type structure side view of the present invention
Fig. 6 is yi word pattern semiconductor laser diode array 1 structural representation of the present invention
Fig. 7 is Chinese character pin-shaped semiconductor laser diode array 1 structural representation of the present invention
(5) specific embodiment:
Concrete structure is further considered on basis in foregoing invention, proposes following various enforcements Example, and by specific embodiment, further specify the distinctive advantage of each embodiment. 1. originally First kind of embodiment of invention as shown in Figure 1, by semiconductor laser diode array 1, sweep Retouch mechanism 2 and visual receiving screen 3 formations. Semiconductor laser diode array 1 comprises corresponding Show the semiconductor laser diode of columns, semiconductor laser diode can be arranged by yi word pattern Cloth, as shown in Figure 6; Also can arrange by Chinese character pin-shaped, as shown in Figure 7; At any time, Each semiconductor laser diode send with respective column on visual corresponding light; Sweep mechanism 2 is rotatable multiaspect mirror drums, and the reflecting surface number is 2 to 100, its reflecting surface number and multiaspect The product of mirror drum per second rotating cycle is the frame refresh rate of video image; Semiconductor laser two The light that utmost point pipe array 1 sends projects on the visual receiving screen 3 by sweep mechanism 2, forms The image of corresponding line is along with rotation and the semiconductor laser diode array 1 of sweep mechanism 2 The variation of the light that sends namely obtains the image of single frames on the visual receiving screen 3, so with necessarily Speed go round and begin again, can obtain the dynamic video image at visual receiving screen.
2. second embodiment of the present invention, as shown in Figure 3, by the semiconductor laser diode battle array Row 1, sweep mechanism 2, speculum 4 and visual receiving screen 3 consist of. Semiconductor laser two utmost points Pipe array 1 comprises the semiconductor laser diode of corresponding demonstration columns, semiconductor laser two utmost points Pipe can be arranged by yi word pattern, as shown in Figure 6; Also can arrange by Chinese character pin-shaped, such as Fig. 7 Shown in; At any time, each semiconductor laser diode send with respective column on the image phase Corresponding light; Sweep mechanism 2 is rotatable multiaspect mirror drums, and the face number is 2 to 100, The product of its reflecting surface number and multiaspect mirror drum per second rotating cycle is that the frame of video image refreshes speed Degree; The light that semiconductor laser diode array 1 sends is by sweep mechanism 2 and speculum 4 Project on the image receiving screen 3, form the image of corresponding line, along with revolving of sweep mechanism 2 Turn to the variation of the light that sends with semiconductor laser diode array 1, on the image receiving screen 3 be Obtain the image of single frames, so go round and begin again with certain speed, can be at the image receiving screen Upper acquisition dynamic video image.
3. the third embodiment of the present invention as shown in Figure 4, is swashed by three groups of semiconductors of RGB Light diode array 1, prism 5, sweep mechanism 2 and image receiving screen 3 consist of. Semiconductor Diode laser matrix 1 comprises the RGB semiconductor laser diode of corresponding demonstration columns, Semiconductor laser diode can be arranged by yi word pattern, as shown in Figure 6; Also can be by the product word Type is arranged, as shown in Figure 7; At any time, each semiconductor laser diode sends and phase The light that the image that should list is corresponding is with certain angle directive prism color device 5, prism Close the look device and can use prism, also can make with other optics, three coloured light pass through prism Close and output to sweep mechanism 2 after look device 5 mixes; Sweep mechanism 2 is rotatable multiaspects Mirror drum, face number are 2 to 100, the taking advantage of of its reflecting surface number and multiaspect mirror drum per second rotating cycle Amassing is the frame refresh rate of video image; RGB semiconductor laser diode array 1 sends Light project on the visual receiving screen 3 by sweep mechanism 2, form the cromogram of corresponding line Resemble, the light that sends along with rotation and the semiconductor laser diode array 1 of sweep mechanism 2 Change, namely obtain the image of single frames on the visual receiving screen 3, so with certain speed week Renew, can obtain the dynamic video chromatic image at visual receiving screen.
4. the 4th kind of embodiment of the present invention as shown in Figure 5, swashed by three groups of semiconductors of RGB Light diode array 1, prism 5, sweep mechanism 2, speculum 4 and image receiving screen 3 structures Become. The RGB semiconductor that semiconductor laser diode array 1 comprises corresponding demonstration columns swashs Optical diode, semiconductor laser diode can be arranged by yi word pattern, as shown in Figure 6; Also Can arrange by Chinese character pin-shaped, as shown in Figure 7; At any time, each semiconductor laser two utmost point Pipe sends the light corresponding with the image on the respective column, with certain angle directive prism color Device 5, the prism color device can be used prism, also can make with other optics three looks Light outputs to sweep mechanism 2 after mixing by prism color device 5; Sweep mechanism 2 is one can The multiaspect mirror drum of rotation, the product of its reflecting surface number and multiaspect mirror drum per second rotating cycle is for looking The frame refresh rate of frequency image; The light that RGB semiconductor laser diode array 1 sends is logical Overscanning mechanism 2 and speculum 4 project on the image receiving screen 3, form the coloured silk of corresponding line Color image is along with the rotation of sweep mechanism 2 and semiconductor laser diode array 1 send The variation of light namely obtains the image of single frames on the image receiving screen 3, so with certain speed Go round and begin again, can obtain the dynamic video coloured image at the image receiving screen.
Claims (7)
1. the method for a laser display video image, it is characterized in that carrying out according to the following steps: at first from vision signal, isolate red, green, blue three-colour image signal and frame synchronizing signal, wherein the three-colour image signal is controlled the light that three look semiconductor laser diode arrays send respective strengths respectively after handling through transformation from serial to parallel, by with the look device, normally prism is exported after with three coloured light colour mixtures, under the control of frame synchronizing signal, sweep mechanism, be that light deflector is with fixing speed rotation, to invest image with the light of look device output accepts so to go round and begin again on the screen.
2. the display of a laser display video image is characterized in that being made of semiconductor laser diode array, sweep mechanism and visual receiving screen, and described semiconductor laser diode is of a size of greater than 0.1mm, less than 5mm.
3. the display of a kind of laser display video image as claimed in claim 2, it is characterized in that described sweep mechanism is a rotatable multiaspect mirror drum, the reflecting surface number is the 2-100 face, the concrete face number that uses, can be calculated as follows: the product of the reflecting surface and the multiaspect mirror drum per second number of turns is the frame refresh rate of video image.
4. the display of a kind of laser display video image as claimed in claim 2 is characterized in that increasing the light that speculum sends semiconductor laser diode and reflexes to the image receiving screen.
5. the display of a kind of laser display video image as claimed in claim 2 is characterized in that increasing the prism color device, and it outputs to sweep mechanism after three coloured light are mixed, and arrives image display again, forms the video color image.
6. the display of a kind of laser display video image as claimed in claim 5 is characterized in that described prism color device can use prism, also can be with the optics of other tool corresponding functions.
7. the display of a kind of laser display video image as claimed in claim 5 is characterized in that increasing speculum, and the light that the prism color device is outputed to sweep mechanism reflexes to the image receiving screen, forms the video color image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01131494 CN1337827A (en) | 2001-09-12 | 2001-09-12 | Laser display method and device for video image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01131494 CN1337827A (en) | 2001-09-12 | 2001-09-12 | Laser display method and device for video image |
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| Publication Number | Publication Date |
|---|---|
| CN1337827A true CN1337827A (en) | 2002-02-27 |
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| CN 01131494 Pending CN1337827A (en) | 2001-09-12 | 2001-09-12 | Laser display method and device for video image |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505389B (en) * | 2009-02-13 | 2011-10-12 | 深圳市纳宇电子有限公司 | Laser projection display apparatus and implementing method |
| CN104729488A (en) * | 2015-04-02 | 2015-06-24 | 哈尔滨光学仪器厂有限责任公司 | Device for marking operation area and positioning method |
| CN111866477A (en) * | 2019-04-30 | 2020-10-30 | 深圳光峰科技股份有限公司 | Image forming apparatus and method |
-
2001
- 2001-09-12 CN CN 01131494 patent/CN1337827A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505389B (en) * | 2009-02-13 | 2011-10-12 | 深圳市纳宇电子有限公司 | Laser projection display apparatus and implementing method |
| CN104729488A (en) * | 2015-04-02 | 2015-06-24 | 哈尔滨光学仪器厂有限责任公司 | Device for marking operation area and positioning method |
| CN111866477A (en) * | 2019-04-30 | 2020-10-30 | 深圳光峰科技股份有限公司 | Image forming apparatus and method |
| WO2020221084A1 (en) * | 2019-04-30 | 2020-11-05 | 深圳光峰科技股份有限公司 | Imaging apparatus and method |
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