CN101699870A - RGB scanning projection device - Google Patents
RGB scanning projection device Download PDFInfo
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- CN101699870A CN101699870A CN200910108640A CN200910108640A CN101699870A CN 101699870 A CN101699870 A CN 101699870A CN 200910108640 A CN200910108640 A CN 200910108640A CN 200910108640 A CN200910108640 A CN 200910108640A CN 101699870 A CN101699870 A CN 101699870A
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Abstract
The invention relates to an RGB scanning protection device which belongs to the technical field of color image projection and is used for solving the problems of higher manufacturing cost, lower imaging resolution and larger power consumption and volume of the existing imaging technology. A signal output end of a clock signal generating unit is connected with a signal input end of a signal processing unit, a point frequency signal output end of the signal processing unit is connected with a point frequency signal input end of a color light source unit, a horizontal scanning frequency signal output end and a vertical scanning frequency signal output end of the signal processing unit are connected with a horizontal scanning frequency signal input end and a vertical scanning signal input end of an optical trace scanning unit respectively, an optical signal output end of the color light source unit and an optical signal input end of a focusing lens are connected, the optical signal output end of the focusing lens and the optical signal input end of the optical trace scanning unit are connected, and the optical signal output end of the optical trace scanning unit and the optical signal input end of an output lens are connected.
Description
Technical field
The present invention relates to a kind of three primary colors (R is red/G is green/B indigo plant) light source scanning device of projecting apparatus, belong to the colour image projection technical field.
Background technology
The general technology that adopts of traditional projecting apparatus is DLP, 3LCD or LCOS+ light source, and its design is based on source reflection with DLP, and 3LCD or LCOS are as main image forming apparatus, but the cost of this device is generally higher.In addition, also have a laser projection pen to can be used as projecting apparatus and use, but its structure is monochromatic image, and image resolution is lower, only can the projection simple image, be difficult to reach the television image level.In the prior art, the RGB laser light source is a kind of chromatic image product that can be applied to throw high brightness, but the laser light source price is higher, power consumption and volume are bigger.
Summary of the invention
The present invention is higher for solving the manufacturing cost that exists in the existing video imaging technology, the resolution of imaging is lower, the problem that power consumption and volume are bigger, a kind of RGB scanning projection device is provided, this device comprises the clock signal of system generation unit, signal processing unit, the color light source unit, condenser lens, optical track scanning element and output lens lens, the signal output part of clock signal generation unit is connected with the signal input part of signal processing unit, the dot frequency signal output part of signal processing unit is connected with the dot frequency signal input part of color light source unit, the horizontal frequency signal output part of signal processing unit is connected with the vertical scanning frequency signal input part with the horizontal frequency signal input part of optical track scanning element respectively with the vertical scanning frequency signal output part, the light signal output end of color light source unit is connected with the light signal input of condenser lens, the light signal output end of condenser lens is connected with the light signal input of optical track scanning element, and the light signal output end of optical track scanning element is connected with the light signal input of output lens lens.
Scioptics design of the present invention, the three primary colors light source aggregated into be some colour elements, control three primary colors (RGB) drive the synthetic various colors of energy bins, collocation scan control circuit and optical track scanning means carry out projection, not only application principle is simple, use raw material to obtain easily, have that manufacturing cost is lower, power consumption and a volume features of smaller.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention.
Embodiment
Present embodiment is by clock signal of system generation unit 1, signal processing unit 2, color light source unit 3, condenser lens 4, optical track scanning element 5 and output lens lens 6 are formed, the signal output part of clock signal generation unit 1 is connected with the signal input part of signal processing unit 2, the dot frequency signal output part of signal processing unit 2 is connected with the dot frequency signal input part of color light source unit 3, the horizontal frequency signal output part of signal processing unit 2 is connected with the vertical scanning frequency signal input part with the horizontal frequency signal input part of optical track scanning element 5 respectively with the vertical scanning frequency signal output part, the light signal output end of color light source unit 3 is connected with the light signal input of condenser lens 4, the light signal output end of condenser lens 4 is connected with the light signal input of optical track scanning element 5, and the light signal output end of optical track scanning element 5 is connected with the light signal input of output lens lens 6.
Present LED and laser (red/green/indigo plant) light source has reached enough illuminance levels, three primary colors (red/green/indigo plant) light source can become some color light source pixels via the lens design polymerization, as long as control three primary colors light source can be formed various colors, add the optical track scanning means and the scanning projection control electronic circuit of direct reflection, its principle is as the CRT TV, the scanning circuit that adopts is divided into horizontal synchronization scanning and vertical synchronization scan control circuit, and the optical track reflection angle of control minute surface and speed (scanning means) form piece image and finishes the image projecting purpose.Image definition can be reached by the synchronous scanning signal of high frequency that scan control circuit produces of control optical track scanning means (horizontal direction/vertical direction) speculum (angle/speed), and scanning frequency is high more, and pixel is high more, and image definition is good more.In sum, the present invention is in conjunction with traditional C RT TV three rifle electron beam scanning operation principles, and the Dot Clock (Dot clock) of TFT LCD clock control signal processing mode, horizontal synchronization (H.sync.), vertical synchronization (V.sync.), video data enables signals such as (Display Data Enable (DE)), the arrange in pairs or groups method of Integration Design of RGB RGB three primary colors light source and projector optical engine device (Light EngineDevice) has realized goal of the invention again, below in conjunction with Fig. 1 the specific embodiment of the present invention is elaborated.
System clock signal generation unit 1 is made up of crystal oscillator and frequency eliminating circuit, is used for producing: the frequency and the sync signal (V.sync) of the Dot Clock frequency (Dot Clock) of the required system clock frequency (System Clock) of signal processing unit 2 main control chips (MCU), image pixel (Pixel:RGB synthesizes a pixel), the frequency of horizontal sweep synchronous control unit and sync signal (H.sync), vertical scanning synchronous control unit.
Image signal processing unit 2-1, have and to receive external image signal input interface, and inner display memory (Display RAM) storage image data, and the coding/decoding software program changes into according to the sequential controlling signal that sends color light source unit 3 to of clock signal dot frequency (Dot Clock).In the coding and decoding software program, comprise: the displayable color exponent number coding of each pixel (the 18bits=262K look, 24bits=16.7 1,000,000 looks are equally applicable to less figure place (Bit) or than the data arrangement coding method of hanging down the color exponent number; As 16bits, 8bits... etc.), the displayable pixel number of each horizontal scanning line (800 points, 1024 points, 1280 points, 1440 points, 1920 points ...), the displayable horizontal line line number of each vertical scan line (600,720,768,1024,1080 ...).
Horizontal sweep synchronous control unit 2-2, be used for horizontal frequency according to clock signal, directivity is arranged and be docile and obedient the output control turned position of preface and the signal feedwater of angle square to transmission device, reflection angle with the horizontal direction mirror surface of control optical track scanning element 5, and confirm and check the transmission of optical track scanning means 5 and image signal according to horizontal synchronization signal, whether reach synchronizing function.
Vertical scanning synchronous control unit 2-3, be used for vertical scanning frequency according to clock signal, directivity is arranged and be docile and obedient the output control turned position of preface and the signal of angle is given the vertical direction transmission device, with the reflection angle of the vertical direction mirror surface of control optical track scanning means 5, and according to vertical synchronizing signal confirm and the transmission of check optical track scanning means 5 and image signal to reach synchronizing function.
Color light source unit 3, be used to receive image signal processing unit 2-1 and send the RGB digital signal that coding is finished according to Dot Clock signal (Dot clock), convert the driving energy of analog signal to, be supplied to 3-R, 3-G, the 3-B input of corresponding color, the rgb light line that sets the brightness and color exponent number with generation data-driven signal is exported, and projects on the condenser lens 4.
Condenser lens 4 is used for the RGB three-color light source is aggregated into a point-source of light, projects on the mirror surface of horizontal scan direction in the optical track scanning means 5 again.
Optical track scanning element 5 is made up of horizontal sweep unit 5-1 and vertical scan unit 5-2, the horizontal frequency signal input part of horizontal sweep unit 5-1 is connected with the horizontal frequency signal output part of signal processing unit 2, the vertical scanning frequency signal input part of vertical scan unit 5-2 is connected with the vertical scanning frequency signal output part of signal processing unit 2, the light signal output end of horizontal sweep unit 5-1 is connected with the light signal input of vertical scan unit 5-2, and the light signal output end of vertical scan unit 5-2 is connected with the light signal input of output lens lens 6.
Horizontal sweep unit 5-1, it can be the point-source of light that receives GRIN Lens 4 by a rotatable polygon minute surface, add a horizontal sweep controlling signal by horizontal sweep synchronous control unit 2-2 input, angle and speed with the mirror surface horizontal direction rotation of control, change the direction of light conduct, make the clock signal order of light according to horizontal frequency, form the horizontal line light source of a level unit interval (H.Sync), again this light is reflexed on the speculum of vertical scan unit 5-2.Simultaneously via the horizontal synchronization signal that system clock passed, whether running speed and angle that can insolation level scanning element 5-1 all reach the position of correct setting, and adjust level of corrections scanning element 5-1 at any time, to reach normal function.
Vertical scan unit 5-2, can be by the line source of a rotatable polygon minute surface reception from horizontal sweep unit 5-1, add a vertical scanning controlling signal by vertical scanning synchronous control unit 2-3 input, angle and speed with the mirror surface vertical direction rotation of control, change the direction of light conduct, make the clock signal order of light according to vertical scanning frequency, form the area source of a vertical unit interval (V.Sync), as piece image, again this light is reflexed on the output lens lens 6.Via the vertical synchronizing signal that system clock passed, can check the running speed of vertical scan unit 5-2 and angle whether all to reach the position of correct setting simultaneously, and adjust at any time and proofread and correct vertical scan unit 5-2, to reach normal function.
Output lens lens 6, can be the lens of a high penetration, receive the area source (just as the area source of a width of cloth image picture) that vertical scan unit 5-2 projection is come, via adjusting the distance of lens with light source, reach focusing that adjustment is incident upon outside video picture picture from the purpose of definition.
Claims (3)
1. RGB scanning projection device, it is characterized in that, comprise clock signal of system generation unit (1), signal processing unit (2), color light source unit (3), condenser lens (4), optical track scanning element (5) and output lens lens (6), the signal output part of clock signal generation unit (1) is connected with the signal input part of signal processing unit (2), the dot frequency signal output part of signal processing unit (2) is connected with the dot frequency signal input part of color light source unit (3), the horizontal frequency signal output part of signal processing unit (2) is connected with the vertical scanning frequency signal input part with the horizontal frequency signal input part of optical track scanning element (5) respectively with the vertical scanning frequency signal output part, the light signal output end of color light source unit (3) is connected with the light signal input of condenser lens (4), the light signal output end of condenser lens (4) is connected with the light signal input of optical track scanning element (5), and the light signal output end of optical track scanning element (5) is connected with the light signal input of output lens lens (6).
2. a kind of RGB scanning projection device according to claim 1, it is characterized in that, described signal processing unit (2) comprises signal of video signal processing unit (2-1), horizontal sweep synchronous control unit (2-2) and vertical scanning synchronous control unit (2-3), signal of video signal processing unit (2-1), the signal input part of horizontal sweep synchronous control unit (2-2) and vertical scanning synchronous control unit (2-3) all is connected with the signal output part of clock signal generation unit (1), the dot frequency signal output part of signal of video signal processing unit (2-1) is connected with the dot frequency signal input part of color light source unit (3), the horizontal frequency signal output part of horizontal sweep synchronous control unit (2-2) is connected with the horizontal frequency signal input part of optical track scanning element (5), and vertical scanning synchronous control unit (2-3) is connected with the vertical scanning frequency signal input part of optical track scanning element (5).
3. a kind of RGB scanning projection device according to claim 1, it is characterized in that, described optical track scanning element (5) comprises horizontal sweep unit (5-1) and vertical scan unit (5-2), the horizontal frequency signal input part of horizontal sweep unit (5-1) is connected with the horizontal frequency signal output part of signal processing unit (2), the vertical scanning frequency signal input part of vertical scan unit (5-2) is connected with the vertical scanning frequency signal output part of signal processing unit (2), the light signal output end of horizontal sweep unit (5-1) is connected with the light signal input of vertical scan unit (5-2), and the light signal output end of vertical scan unit (5-2) is connected with the light signal input of output lens lens (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910108640A CN101699870A (en) | 2009-07-09 | 2009-07-09 | RGB scanning projection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910108640A CN101699870A (en) | 2009-07-09 | 2009-07-09 | RGB scanning projection device |
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| CN101699870A true CN101699870A (en) | 2010-04-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103813118A (en) * | 2012-11-08 | 2014-05-21 | 索尼公司 | Drive control apparatus, drive control method, and video output apparatus |
| CN104344275A (en) * | 2013-07-25 | 2015-02-11 | 鸿富锦精密工业（深圳）有限公司 | Backlight module and display device |
| CN106604007A (en) * | 2017-01-24 | 2017-04-26 | 深圳晗竣雅科技有限公司 | Diode array monochromatic projection imaging device |
-
2009
- 2009-07-09 CN CN200910108640A patent/CN101699870A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103813118A (en) * | 2012-11-08 | 2014-05-21 | 索尼公司 | Drive control apparatus, drive control method, and video output apparatus |
| CN103813118B (en) * | 2012-11-08 | 2017-12-01 | 索尼公司 | Drive dynamic control device and drive control method and video output device |
| CN104344275A (en) * | 2013-07-25 | 2015-02-11 | 鸿富锦精密工业（深圳）有限公司 | Backlight module and display device |
| CN106604007A (en) * | 2017-01-24 | 2017-04-26 | 深圳晗竣雅科技有限公司 | Diode array monochromatic projection imaging device |
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Application publication date: 20100428 |