CN104503195B - Device used for whole row scanning type laser projection display and synchronization control method thereof - Google Patents
Device used for whole row scanning type laser projection display and synchronization control method thereof Download PDFInfo
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- CN104503195B CN104503195B CN201410724582.8A CN201410724582A CN104503195B CN 104503195 B CN104503195 B CN 104503195B CN 201410724582 A CN201410724582 A CN 201410724582A CN 104503195 B CN104503195 B CN 104503195B
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- 238000003384 imaging method Methods 0.000 claims abstract description 14
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- 238000010408 sweeping Methods 0.000 claims description 2
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2066—Reflectors in illumination beam
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/105—Scanning systems with one or more pivoting mirrors or galvano-mirrors
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides a device used for whole row scanning type laser display and a synchronization control method thereof. The device used for display comprises a light source assembly, a one-dimensional imaging device, a scanning device, a projection lens, a video decoding device, a light source drive control device and a photoelectric sensor. The light source assembly comprises plural laser generator module groups. The one-dimensional imaging device comprises plural light guide devices. The scanning device is arranged in the light path of laser emergent from a light emergent end and used for reflecting emergent light of the light emergent end of the guide light devices to the projection lens. The photoelectric sensor is used for detecting a single-frame scanned initial laser signal. The light source drive control device is used for outputting drive control signals to the light source assembly in a spacing way according to one-dimensional video signals decoded by the video decoding device. When the scanning device rotates around the rotating shaft of the scanning device, the projected one-dimensional emergent light of a first direction can be scanned along a second direction vertical to the first direction.
Description
Technical field
The application relates to technical field of laser display, is specifically related to a kind of aobvious for the projection of full line scanning type laser
The device shown and the method for its Synchronization Control.
Background technology
The quantity of information of the mankind 83% is obtained by vision, and is obtained by audition, olfactory sensation, the sense of taste and sense of touch
The quantity of information sum obtained only account for 27%, it can thus be appreciated that display device obtains the significance of information for the mankind.
Within 1897, Braun has invented CRT (Cathode-Ray-Tube, cathode ray tube), and the mankind are thence into electricity
The sub-display epoch.In year more than 100 afterwards, the mankind have invented various Display in succession, develop
Miscellaneous display device.Display device substantially can be divided into three kinds: one shows for light emitting-type, comprises
CRT, LED (Light Emitting Diode, light emitting diode) display screen, OLED (Organic Light
Emitting Diode, Organic Light Emitting Diode) display screen, (Plasma Display Panel, plasma shows PDP
Show plate) etc.；Another kind shows for backlight type, comprises LCD (Liquid Crystal Display, liquid crystal display
Device)；The third is scialyscope.
CRT technology is in radiotelevisor and tabletop display market, owing to its volume is too big by LCD technology
Replace；In large screen projection market, owing to its output light flux is not enough, replaced by LCD and DLP projector.
LCD-TV and PDP TV are at the initial stage in domestic TV market with the competition of CRT TV, and PDP is with its color
Good advantage (color domain coverage ratio 38%) once had half share with LCD；But along with LCD refreshing frequency
Improving and the progress of back light source technique, LCD-TV has already taken up most shares of TV market.Though
So the LCD-TV of LED backlight and the color representation power of display are obviously improved, but its colour gamut is covered
Lid rate still only has about 33%.The color domain coverage ratio of bulb scialyscope is less than 30%.
Pass judgment on the good and bad index of display device performance mainly have picture dimension, resolution, brightness, contrast,
Color representation power etc..The most flourish laser display technology, is expected to surmount conventional display device comprehensively
Performance indications (such as picture dimension, resolution, brightness and color representation power etc.).
Laser display technology can be divided into several kinds.One of which is referred to as LPD (Laser Phosphor
Display, laser fluorescence powder shows), its structure is similar with CRT, but laser beam instead of electron beam；Half
The blue laser beam that conductor blue laser sends, is irradiated to scribble excitated fluorescent powder on the screen of fluorescent material luminous,
Realize image by video signal control laser beam two-dimensional scan to show.As CRT, LPD is difficult to do
To thin as LCD, picture dimension is also little, is to realize large screen display in the way of splicing.The second
It is the Projection Display using LASER Excited Fluorescence powder light source, not in use by gas bulb, eliminates the most frequently
The maintenance work more changed the bulb, image quality also makes moderate progress simultaneously.The projection of LASER Excited Fluorescence powder light source
Display, not only color coverage rate does not has revolutionary breakthrough, and output light flux is by the anti-laser intensity of fluorescent material
Restriction, it is difficult to accomplish more than 10,000 lumens.The third laser display technology is to use red-green-blue to swash
The Projection Display of radiant, because mostly using DMD (Digital Micromirror Device) light valve, so
Someone is referred to as meaning laser DLP (Digital Light Processing) but it also may use LCD light valve or LCOS
(Liquid Crystal on Silicon, reflection-type liquid crystal light valve) etc..Projection with LASER Excited Fluorescence powder light source shows
Show and compare, it is possible to obtain higher luminous flux and bigger color domain coverage ratio, however it is necessary that elimination laser speckle
Just can obtain preferable image quality.The resolution of laser DLP is limited by light valve, when large screen display,
Owing to its number of pixels is limited, although brightness can be the highest, color is fine, but pixel is relatively big, and image is drawn
In facial vision fine and smooth not.4th kind is laser point by point scanning projection imaging technology, as shown in figure 11, red,
Three beams of laser green, blue, scans a point (a corresponding pixel) on screen, by video signal control simultaneously
The power of three beams of laser processed, carries out two-dimensional scan and shows to realize coloured image；Screen is used by scialyscope
Curtain (or rear projection screen) rather than scribble the glass plate of fluorescent material as LPD or CRT.Swash
Light point by point scanning projection imaging technology, resolution can be the highest, but laser beam power is the highest, once light beam
When stopping scanning motionless, it is easy to breaking out of fire, burn human eye or skin；Two-dimensional scan device is the most multiple
Miscellaneous.
Summary of the invention
The application provides a kind of device shown for full line scanning type laser.To solve existing laser display
The problems referred to above of device.The application also provides for the same of a kind of device shown for described full line scanning type laser
Step control method.
A kind of device shown for full line scanning type laser that the application provides, including:
Light source assembly, one-dimensional image device, scanning means, projection lens, video decoder, light source drive
Dynamic control device and photoelectric sensor；
Described light source assembly includes that a plurality of laser generator module, each laser generator module are used for producing
The laser that single pixel is corresponding；
Described one-dimensional image device includes a plurality of leaded light device and is arranged at each described leaded light device coupled end
Laser generator module laser coupled mouthpiece；Described leaded light device go out the most one-dimensional row of light end
Row；
Scanning means is provided with at least one reflecting surface, described scanning means be arranged at described in go out light bring out penetrate swash
In the light path of light, for the emergent light going out light end of described leaded light device is reflexed to described projection lens；
Described projection lens, is imaged onto the light end that goes out of one dimensional arrangement in the first direction on screen；
Described photoelectric sensor is connected with described light source drive control device, and is arranged at described scanning means
In the scanning initial light path of reflecting surface emergent light, for detecting the initial laser signal of single frames scanning；
Described light source drive control device is connected with described video decoder, for receiving photoelectric transfer
Sensor detection initial laser signal after, according to video decoder decoded one dimensional video signal interval to
Light source assembly output drive control signal；
Wherein, described scanning means is provided with the rotary shaft parallel with described first direction, at described scanning dress
Put and rotate about axle when rotating, the one-dimensional emergent light of first direction that is projected can be realized along being perpendicular to described the
The second direction scanning in one direction.
Optionally, described laser generator module includes the laser instrument producing red, green, blue tricolor laser,
And it is arranged at the collimating element in the emitting light path of each laser instrument；
Described each leaded light device all includes relative with the laser instrument of described generation red, green, blue tricolor laser
Three optical fiberss that should arrange, each fibre-optic coupled end is provided with coupling as described
Laser coupled mouthpiece；Described coupling is arranged at the collimated of the laser instrument corresponding with this optical fibers
After light path in, and towards carrying out light direction, for receiving the laser beam that corresponding laser instrument sends；Each described
All optical fiberss of leaded light device constitute a pixel.
Optionally, described laser generator module includes producing the red laser of red laser and two generations
The blue laser of blue laser；And it is arranged at the collimating element in the emitting light path of each laser instrument；
Each described leaded light device all includes the most corresponding setting of laser instrument with each laser generator module
Three optical fiberss, each fibre-optic coupled end is provided with coupling as described laser coupling
Close mouthpiece；Described coupling is arranged at the collimated light of the laser instrument corresponding with this optical fibers
Lu Zhong, and towards carrying out light direction, for receiving the laser beam that corresponding laser instrument sends；Each described lightguide
All optical fiberss of part constitute a pixel；
Wherein, corresponding with a wherein blue laser fibre-optic light output end is provided with fluorescent material and is coated with
Layer, described fluorescent coating is for exciting lower generation green glow at blue laser.
Optionally, all optical fiberss of each described leaded light device go out the light concordant setting of end end face, and go out light
End is bonded as one；All leaded light devices go out the light concordant setting of end end face.
Optionally, described laser generator module includes the laser instrument producing red, green, blue tricolor laser,
Two two-phase color mirrors and two corner cube prisms；
Described two-phase color mirror and two corner cube prisms are arranged at swashing of described generation red, green, blue tricolor laser
In the light path of light device, and the laser beam of all laser emittings of each light source assembly is spatially overlapped,
And propagate in the same direction；
Each described leaded light device includes and an optical fibers of each corresponding setting of laser instrument module, institute
State fibre-optic coupled end and be provided with coupling as described laser coupled mouthpiece；Described coupling connects
Head is arranged in the collimated light path of the laser instrument module corresponding with this optical fibers, and towards carrying out light
Direction, receives the redgreenblue laser beam that spatially overlaps, each fibre-optic go out light end constitute one
Pixel；All fibre-optic go out the light concordant setting of end end face, and be in line along described first direction, and
All fibre-optic go out light end be bonded as one.
Optionally, described scanning means includes rotating multisurface prism or scanning pendulum len.
Optionally, projection display equipment is also included.
The application also provides for a kind of for any of the above-described described same for full line scanning type laser display device
Step control method, including:
Obtain the laser initializing signal of described full line scanning type laser display device；
Start timing, after postponing the first special time, by a frame letter from this initializing signal obtained temporarily
Number the control signal of the first column or row pixel be transferred to light source assembly；
Timing is started, every the second special time, under inciting somebody to action successively when described delay the first special time ends
The control signal of one column or row pixel is transferred to light source assembly, until last column or row pixel of this frame signal
Till；
Come interim at next frame signal, repeat the above steps.
Optionally, before the laser initializing signal of described acquisition described full line scanning type laser display device also
Including: judge that the rotating speed of the scanning means of described full line scanning type laser display device is the most stable, at rotating speed
The step of the laser initializing signal of described acquisition described full line scanning type laser display device is performed again after Wen Ding
Suddenly.
Optionally, the rotating speed of the described scanning means judging described full line scanning type laser display device is the most steady
Surely include:
Obtain laser initializing signal continuous three times；
Judge that the time interval of double laser initializing signal is the most identical, if identical, then be considered as sweeping
Imaging apparatus rotating speed has been stablized.
Optionally, the beam direction of the first column or row and the light beam side of last column or row in a described two field picture
Angle Ω between to be less than 180* [(n-4)/n], described first special time be { 180* [(n-4)/n]-Ω }/
ω；
Described second special time is Ω/A
Wherein, described n is scanning means when being polygon prism, and corner angle face number, ω is that corner angle are reported, and A is scanning
The number of the column or row in direction.
Compared with prior art, the application has the advantage that
The one aspect of the application discloses a kind of row scanning type laser display device, and it passes through light sources
Part and one-dimensional image device can produce one dimensional image, in this one-dimensional image device, a plurality of leaded light devices
Go out light end one-dimensional array arrangement, each go out light end formed a pixel, all go out light end bond along a line
Fixing, one-row pixels can form one dimensional image.Described one dimensional image is projected such as rotating multisurface prism
Scanning means on, be perpendicular to the one-dimensional scanning direction of described one dimensional image, and in scanning process synchronize
The output intensity of change one dimensional image, can realize forming two dimensional image.The device of the present embodiment, it is thus only necessary to
Scan in one of them dimension of two dimensional image wherein, greatly reduce sweep time, such that it is able to significantly
Improve the refreshing frequency of screen picture；In the scheme of the application, take full advantage of the laser spy as point source
Point so that the brightness of image utilizing the device of the application to be formed is the highest；In the case of equal luminous flux output, light
Bundle beam intensity ratio point by point scanning mode wants much weaker (1/1000 order of magnitude), so safety is higher；Additionally, this
The scheme of application is not in use by light valve, and resolution can be more than 4K (pixel resolutions of i.e. 4096 × 2160)；
The scheme optical texture of the application succinctly makes the efficiency of light energy utilization higher；Red-green-blue laser is used to ensure
The highest color coverage rate；Number of lasers is relevant to number of pixels, can export higher luminous flux；
Can obtain over-large screen display system without connecting method, and pixel is the least, picture is the finest and the smoothest, bright, gorgeous
Beautiful；
The application provides one, and brightness is the highest, resolution is higher, the more preferable scialyscope of color representation power.
Accompanying drawing explanation
Fig. 1 is for the wherein pixel shape in the full line scanning type laser display device first embodiment of the application
Become the schematic diagram of light path；
Fig. 2 is the light source assembly and in the first embodiment of the full line scanning type laser display device of the application
The dimension interconnective schematic diagram of imaging device；
Fig. 3 shows the partial enlarged drawing of one-dimensional pixel array in first embodiment；
Fig. 4 is the first embodiment structural representation of the scanning type laser display device of the application；
Fig. 5 is showing of the single pixel color control of the scanning type laser display device first embodiment of the application
It is intended to；
Fig. 6, its be the application scanning type laser display device the second embodiment in the formation light of single pixel
Road schematic diagram；
Fig. 7 be Fig. 6 along AA to view；
Fig. 8 be the scanning type laser display device of the application the second embodiment in multiple pixels formed pixel
The schematic diagram of array；
Fig. 9 is showing of the single pixel color control of scanning type laser display device second embodiment of the application
It is intended to；
Figure 10 be the scanning type laser display device of the application the 3rd embodiment in the formation light path of single pixel
Schematic diagram；
Figure 11 is the structural representation of existing a kind of laser point by point scanning projection imaging device；
Figure 12 be the scanning type laser display device of the application embodiment in arrange and scan light after photoelectric sensor
Road schematic diagram；
Figure 13 is video decoder and the light source driving of the embodiment of the scanning type laser display device of the application
The principle schematic of control realization frame synchronization.
Detailed description of the invention
Elaborate a lot of detail in the following description so that fully understanding the application.But the application
Can implement to be much different from alternate manner described here, those skilled in the art can without prejudice to
Doing similar popularization in the case of the application intension, therefore the application is not limited by following public being embodied as.
In embodiments herein, disclose a kind of device shown for full line scanning type laser.
Described device includes the light source assembly for producing laser, for realizing one-dimensional in the imaging of one-dimensional direction
Imaging device, to the one dimensional image of described one-dimensional image device in the scanning means of its vertical scan direction, throwing
Shadow camera lens, video decoder, light source drive control device and photoelectric sensor.Wherein, described light source
Assembly includes a plurality of laser generator module, and it is relative that each laser generator module is used for producing single pixel
The laser answered；Described one-dimensional image device includes a plurality of leaded light device and is arranged at each described leaded light device
The laser generator module laser coupled mouthpiece of coupled end；Described leaded light device go out light end in the first direction
One dimensional arrangement, forms one-row pixels；Scanning means is provided with at least one reflecting surface, and described scanning means is arranged
In described go out light bring out in the light path of the laser penetrated；For by anti-for the emergent light going out light end of described leaded light device
Being mapped to projection lens, described leaded light device is gone out the imaging on screen of light end by projection lens；
Described photoelectric sensor is connected with described light source drive control device, and is arranged at described scanning means
In the scanning initial light path of reflecting surface emergent light, for detecting the initial laser signal of single frames scanning；For examining
Survey frame synchronization initializing signal during scanning；
Described light source drive control device is connected with described video decoder, for receiving photoelectric transfer
Sensor detection initial laser signal after, according to video decoder decoded one dimensional video signal interval to
Light source assembly output drive control signal；Described control signal includes carrier chrominance signal and luminance signal, is used for controlling
Make the red, green, blue laser of each laser generator module outgoing of described light source assembly at light the most in the same time
By force；Wherein, described scanning means is provided with the rotary shaft parallel with described first direction, at described scanning dress
Put and rotate about axle when rotating, the one-dimensional emergent light of first direction that is projected can be realized along being perpendicular to described the
The second direction scanning in one direction.Arranged in one-dimensional direction by the LASER Light Source realization that combines with leaded light device
One dimensional image, described one dimensional image can be formed a frame two dimensional image at the second dimension scanning direction.
Below in conjunction with the accompanying drawings the embodiment of the device shown for full line scanning type laser of the application is carried out in detail
Thin description.Just constitute the various piece of the full line scanning type laser projection display equipment of the present embodiment separately below
And mutual relation is described in detail.
Refer to Fig. 2, its be the application full line scanning type laser projection display equipment embodiment in light source
Assembly and the interconnective schematic diagram of one-dimensional image device.In the present embodiment, light source assembly includes a plurality of sharp
Optical generator module 100.Each laser generator module corresponds to a pixel, and its color swashs by controlling this
The light intensity of the trichroism laser of red, green, blue that optical generator module is launched realizes.Occur by controlling this laser
In device module, the electric current that drives of laser instrument can realize the control to shoot laser intensity, and drives electric current permissible
It is modulated by video signal.Laser generator module is connected with the leaded light device of one-dimensional image device,
In the trichroism laser coupled of red, green, blue that laser instrument is launched extremely described leaded light device, and via leaded light device
Other end outgoing, this exit end just constitutes a colour element and (certainly, as required, may be constructed list
Color pixel).The light end that goes out of all leaded light devices is in line, and constitutes the most one-dimensional of a frame two dimensional image.Under
Face illustrates as a example by one of them pixel.
First embodiment
Refer to Fig. 1, its be the application full line scanning type laser display device wherein one pixel formed light path
Schematic diagram.As it is shown in figure 1, laser generator module 100 includes red laser 102c, green laser
Device 102b and blue laser 102a, the first dichroic mirror 106 and second dichroic mirror the 208, first right angle
Corner angle 204 and the second right angle corner angle 202.The arrangement of above-mentioned optics is as shown in Figure 1.
The red laser beam that red laser 102c sends is reflected by the first corner cube prism 204, and the direction of propagation is rolled over
It is irradiated on the first dichroic mirror 106 after turning 90 °；First dichroic mirror 106 transmission green reflection HONGGUANG；
Carefully regulation the first right angle corner angle 204 are apart from the distance of red laser (namely in horizontal direction mobile the
One right angle corner angle 204), and rotate the first right angle corner angle 204 along the direction of vertical paper, the most permissible
Make transmitted through the first dichroic mirror 106 green laser bundle with reflected by the first dichroic mirror 106 after red
Ray laser bundle spatially overlaps.
Blue laser 102a indigo plant laser beam is reflected by the second corner cube prism 202, and the direction of propagation turns back 90 °
After be irradiated on the second dichroic mirror 208；Second dichroic mirror 208 transmission green glow and HONGGUANG and reflect blue light；
Carefully regulation the second corner cube prism 202 is apart from the distance of blue laser (namely in horizontal direction mobile the
Two corner cube prisms 202), and rotate the second corner cube prism 202 along the direction of vertical paper, the most permissible
Make transmitted through the second dichroic mirror 208 red-green glow laser beam with reflected by the second dichroic mirror 208 after
Blue laser beam spatially overlaps, and forms white light laser beam.
White light laser beam, after the first coupled lens 210 and the second coupled lens 212, passes through coupled laser
Coupling interface part SMA905 interface or FC interface, enter in an optical fibers (abbreviation optical fiber) 216 and propagate,
The outfan 218 of optical fiber forms a colour element (single pixel).
Described single colour element is arranged along one-dimensional direction, and is bonded together, i.e. formed as Fig. 2 with
One-dimensional pixel array 200c in Fig. 3.Wherein, Fig. 3 showing, the local of one-dimensional pixel array 200c is put
Big figure, single pixel 218a is array structure along one dimensional arrangement, and the light end that goes out of described leaded light device is bonded as one
Body, and go out the light concordant setting of end end face.The number of described single pixel can be determined according to pixel count to be shown
Fixed.Can be such as 768 or 1024 or 2048.For each pixel, it is required for three laser instrument,
The most above-mentioned red laser 102c, green (light) laser 102b and blue laser 102a.Wherein, HONGGUANG swashs
Light device and blue laser can use semiconductor laser tube, green (light) laser can be all solid state laser or
Green-emitting semiconductor laser tube.
Refer to Fig. 4, it is the example structure schematic diagram of full line scanning type laser display device of the application,
Wherein, in the diagram, display module is eliminated.Refer to Fig. 4, except above-mentioned display module with one-dimensional become
As, outside device, also including scanning means 300, be arranged at described one-dimensional image device 200b and scanning means 300
Between light path in collimating lens 300a, post lens 300b and be arranged at the exiting side of scanning means 300
Projecting lens 400.
In the present embodiment, described scanning means 300 is turnable multi-arris mirror, and the present embodiment is specially eight prisms.
Described eight prisms have eight mirrored sides, are set by described positive eight prisms 300 (actual be not limited to positive eight prisms)
Be placed in described one-dimensional image device 200b goes out in light light path, the light that described one-dimensional image device 200b sends
After collimating lens and post lens 300b, converge in a wherein mirrored sides of described eight prisms 300,
And be radiated on projection screen 500 after projecting lens 400 after reflecting via mirrored sides.The present embodiment
Described in eight prisms there is rotary shaft (and central shaft), its rotary shaft is along being parallel to described one-dimensional image device
One-dimensional array direction arrange, if along described eight prisms rotary shaft rotate described eight prisms, i.e. can realize
The one dimensional image being projeced on described projection screen 500 is being perpendicular to the scanning direction of described one dimensional image, shape
Become Two-dimensional Color Image.
Produce as a example by the image of 1024 × 768 resolution by screen, if one-dimensional image device launches 768
Column of colour, after collimating lens and cylindrical lens, is irradiated on a face of positive eight prisms 300；Just
Eight prisms 300 with angular velocity omega around its central shaft uniform rotation, reflection light beam with 2 ω angular velocity uniform rotation,
The rotational angle maximum magnitude of reflection light beam is 90 °.Reflect light beam through projection lens projects to screen 500
On, when polygon prism is static, reflection light beam forms a line (or string) colour element (this example on screen
In have 768 pixels)；When polygon prism with ω angular velocity around its central shaft uniform rotation time, reflection light beam with 2
ω angular velocity uniform speed scanning screen；Once, the color of each pixel is a scanning for reflection light beam scanning screen
Cycle internal conversion 1024 times, screen just can produce the Two-dimensional Color Image of 1024 × 768 resolution；If
Color transformed 2048 times of each pixel, screen just produces the image of 2048 × 768 resolution.
Wherein, described scanning means can also is that other optical element, such as plural number face, face mirror reflective surface facing outward
And side is end to end and the face mirror combination that formed or scanning pendulum len.Wherein, the swinging axle of scanning pendulum len is i.e.
For herein described rotary shaft, it should be noted that use scanning pendulum len in this application, the then figure formed
As alternately screen being scanned in direction in opposite directions.
Refer to Fig. 5, its be the present embodiment single pixel color control schematic diagram.
As shown in Figure 5, each laser instrument all controls device 20 with Laser Driven and is connected, Laser Driven control
Device 20 processed is all connected with video decoder 10, photoelectric sensor 12.Video signal connects through video
After mouth circuit and video decoding circuit plate process, the carrier chrominance signal of each pixel and luminance signal are transferred to drive
Device 20.Carrier chrominance signal determines red, green, blue laser instrument 102c, 102b and 102c in laser generator module
Drive electric current relative size, just determine according to luminance signal red, green, blue laser instrument 102c, 102b and
The driving current value of 102c.Photoelectric sensor 12 detects the initializing signal of each two field picture, it is achieved each frame
And on different frame frame Laser Driven control the every one-dimensional pel array of device and prism scanning report between same
Step, can be described in detail this synchronization implementation in following step.
In the above-described embodiment, disclose a kind of full line scanning type laser display device, pass through light source assembly
One dimensional image can be produced with one-dimensional image device, in this one-dimensional image device, multiple leaded light devices go out light
End one-dimensional array arrangement so that one dimensional image spatially spreads out and formed, and is projected by described one dimensional image
On the such as scanning means of eight prisms, it is being perpendicular to the one-dimensional scanning direction of described one dimensional image, and in scanning
During synchronize the output intensity of change one dimensional image, just can form two dimensional image, rotate continuously described eight ribs
Mirror, can realize video playback.The device of the present embodiment, it is thus only necessary to wherein the one of two dimensional image wherein
Individual dimensional searches, substantially reduces cycle sweep time, such that it is able to significantly improve the refreshing frequency of screen picture
Rate.Additionally, in the scheme of the application, take full advantage of the laser feature as point source so that utilize this
The brightness of image that the device of application is formed is high, and color is good, in the case of the output of equal luminous flux, the present embodiment
Scheme light beam beam intensity ratio point by point scanning mode wants much weaker (1/1000 order of magnitude), so safety is higher；This
Outward, the scheme of the application is not in use by light valve, and resolution can (pixel of i.e. 4096 × 2160 be divided more than 4K
Resolution)；The scheme optical texture of the application succinctly makes the efficiency of light energy utilization higher；Employing red-green-blue swashs
Light ensure that the highest color coverage rate；Number of lasers is relevant to number of pixels, can export higher light
Flux；Can obtain over-large screen display system without connecting method, and pixel is the least, picture is the finest and the smoothest, bright
Bright, gorgeous；
Second embodiment
In the present embodiment, scanning means is same as the previously described embodiments, except that form the side of single pixel
Formula is different.Refer to Fig. 6, its be the application scanning type laser display device the second embodiment in single picture
The formation light path schematic diagram of element.In the present embodiment, laser generator module includes the trichroism laser of red, green, blue
Device (102c, 102b, 102a), and be arranged in the emitting light path of each laser instrument collimating element (210a,
210b、210c；212a、212b、212c)；
Described leaded light device includes the optical fibers of setting corresponding with each laser instrument, each fibre-optic
Coupled end is provided with coupling SMA905 or FC joint as described laser coupled mouthpiece；Described coupling
Splice grafting head is arranged in the collimated light path of the laser instrument corresponding with this optical fibers, and towards carrying out light
Direction, for receiving the laser beam that corresponding laser instrument sends；Each leaded light device all fibre-optic go out
The concordant setting of light end end face, and go out light end and be bonded as one.All optical fiberss of described each leaded light device
Constitute a pixel.
Described each leaded light device all includes relative with the laser instrument of described generation red, green, blue tricolor laser
Three optical fiberss that should arrange, each fibre-optic coupled end is provided with coupling and swashs as described
Optical coupling interface；Described coupling is arranged at the collimated of the laser instrument corresponding with this optical fibers
In light path, and towards carrying out light direction, for receiving the laser beam that corresponding laser instrument sends；Each leaded light device
All fibre-optic go out light end 219 the concordant setting of end face, and go out light end and be bonded as one；Constitute one
The colour element that three points of pixels of individual RGB are misaligned, as shown in Figure 7.Fig. 7 be Fig. 6 along AA to regard
Figure, single pixel includes three points of the most misaligned pixels: red pixel 219a, blue pixel 219c
With green pixel 219b.The pel array that multiple pixels are constituted is as shown in Figure 8.The color control of single pixel
System as shown in Figure 9, repeats no more here.
The other side of the present embodiment can be identical with above-mentioned first embodiment, repeats no more here.
3rd embodiment
In the present embodiment, the implementation of monochromatic pixel is essentially identical with above-mentioned second embodiment, different
The fibre-optic light output end being corresponding with a wherein blue laser 103b is provided with fluorescent coating,
The most described fluorescent coating is for exciting lower generation green glow at blue laser.The present embodiment other
Aspect is identical with the second above-mentioned embodiment.Advantage of this embodiment is that image speckle is the most weak.
As it has been described above, launch a plurality of (such as 768) column of colour by one-dimensional image device or device,
After collimating lens and cylindrical lens, it is irradiated to exposure subsystem (for just in above-described embodiment of the application
Eight prisms, are not limited to be not limited to positive eight prisms in actual use) a face on；Exposure subsystem with
ω angular velocity then with 2 ω angular velocity uniform rotation, reflects light beam around its central shaft uniform rotation, reflection light beam
Rotational angle maximum magnitude be 90 ° (now, light beam be irradiated to the angle in one of them face make this light beam with
The adjacent next sensitive surface of exposure subsystem is parallel).Reflection light beam in projection lens projects to screen,
When polygon prism is static, reflection light beam forms a line (or string) colour element (the present embodiment on screen
In have 768 pixels)；When polygon prism with ω angular velocity around its central shaft uniform rotation time, reflection light beam with 2
ω angular velocity uniform speed scanning screen；Reflection light beam scans screen once, color transformed 1024 times of each pixel,
Just the image of 1024 × 768 resolution is produced on screen；If color transformed 2048 time of each pixel, screen
On just produce the image of 2048 × 768 resolution.For realizing light source drive control device for different battle array frames
Signal processing and scanning means rotational speed matches, to realize synchronizing between the different frame that screen shows, the application
The device shown for full line scanning type laser be additionally provided with photoelectric sensor 12, as shown in figure 12, described
Photoelectric sensor be arranged at described scanning means reflecting surface (the application is the working reflex face of eight prisms,
The most in running order reflecting surface) emergent light scanning initial light path in, now, should be that single frames is initial to be swept
The light path retouched, for when single frames initial sweep, can capture this scanning optical signal.This photoelectric sensor
12 both can be arranged at projection lens come light side, it is also possible to be set to light emission side.
When realizing frame synchronization, refer to Figure 13, first, obtain described full line scanning type laser display device
Laser initializing signal；Then, start timing from this initializing signal obtained temporarily, postpone first
After special time, the control signal of the first column or row pixel of a frame signal is transferred to light source assembly；Then,
Timing is started, every the second special time, successively by next column when described delay the first special time ends
Or the control signal of row pixel is transferred to light source assembly, till last column or row pixel of this frame signal；
Followed by, come interim at next frame signal, repeat the above steps.In above-mentioned method, by each frame
Before arriving or when arriving, obtain initializing signal, as the initial sweep signal of present frame so that every
The scanning signal of one frame processes Tong Bu with the frame of light source drive control device.Ensure that scanning type laser display dress
The normal work put.
In the present embodiment, the laser initializing signal of described acquisition described full line scanning type laser display device it
Before also include: judge that the rotating speed of the scanning means of described full line scanning type laser display device is whether stable,
The laser initializing signal of described acquisition described full line scanning type laser display device is performed again after stabilization of speed
Step, wherein, the rotating speed of the described scanning means judging described full line scanning type laser display device is the most steady
Surely can be accomplished in that continuous three times and obtain laser initializing signal；Judge double laser
The time interval of initializing signal is the most identical, if identical, be then considered as scanning means rotating speed and stablized.
Additionally, described first special time by the beam direction of the first column or row in a described two field picture with last
Relation between the maximum angle M of angle Ω between the beam direction of one column or row and light beam scanning and determine.
When in a described two field picture between beam direction and the beam direction of last column or row of the first column or row
When angle Ω is M=180* [(n-4)/n], the most described first special time is zero, but rising due to scanning
Beginning row or column (and last row or column) is by above-mentioned photoelectric sensor (or thinking that pel array goes out light end)
Blocked, it is impossible to imaging on screen.Those skilled in the art can be by technological means by first or last
The video frequency signal processing of row or column be the monochromator array not carrying video image, and only use interscan district
Territory.
In a described frame signal between beam direction and the beam direction of last column or row of the first column or row
Angle Ω less than 180* [(n-4)/n] time, described first special time is equal to: { 180* [(n-4)/n]-Ω }/
ω；
The beam direction of the first column or row and last column or row in described second special time and a two field picture
Angle Ω between beam direction is relevant with the line number of scanning or columns.Described second special time is Ω/A
Wherein, described n is scanning means when being polygon prism, and corner angle face number, ω is that corner angle are reported, and A is scanning
The number of the column or row in direction.
As a example by single frames 1024*768 pixel and row scanning, frame synchronization is implemented step below to carry out
Describe in detail.Refer to above-mentioned accompanying drawing 12, when screen refresh rate is 120Hz, need turning of polygon prism
Speed ω=30 π/s, namely rotating speed is 900 turns per minute.In one frame signal first row (or the first row) as
Angle between beam direction and the beam direction of last string (or last column) pixel of element is Ω, if row
Or the number of row is A (A=1024 in this example), the first special time T1=(pi/2-Ω)/ω；The
Two special time Δ T2=Ω/A.
Although the application is open as above with preferred embodiment, but it is not for limiting the application, Ren Heben
Skilled person, without departing from spirit and scope, can make possible variation and amendment,
Therefore the protection domain of the application should be defined in the range of standard with the application claim.
Claims (10)
1. a full line scanning type laser display device, it is characterised in that including:
Light source assembly, one-dimensional image device, scanning means, projection lens, video decoder, light source drive
Dynamic control device and photoelectric sensor；
Described light source assembly includes that a plurality of laser generator module, each laser generator module are used for producing
The laser that single pixel is corresponding；
Described one-dimensional image device includes a plurality of leaded light device and is arranged at each described leaded light device coupled end
Laser generator module laser coupled mouthpiece；Described leaded light device go out the most one-dimensional row of light end
Row；
Scanning means is provided with at least one reflecting surface, described scanning means be arranged at described in go out light bring out penetrate swash
In the light path of light, for the emergent light going out light end of described leaded light device is reflexed to described projection lens；
Described projection lens, brings out the video imaging penetrated to screen by the light that goes out of one dimensional arrangement in the first direction；
Described photoelectric sensor is connected with described light source drive control device, and is arranged at described scanning means
In the scanning initial light path of reflecting surface emergent light, for detecting the initial laser signal of single frames scanning；
Described light source drive control device is connected with described video decoder, for receiving photoelectric transfer
Sensor detection initial laser signal after, according to video decoder decoded one dimensional video signal interval to
Light source assembly output drive control signal；
Wherein, described scanning means is provided with the rotary shaft parallel with described first direction, at described scanning dress
Put and rotate about axle when rotating, the one-dimensional emergent light of first direction that is projected can be realized along being perpendicular to described the
The second direction scanning in one direction.
Full line scanning type laser display device the most according to claim 1, it is characterised in that: described sharp
Optical generator module includes the laser instrument producing red, green, blue tricolor laser, and is arranged at each laser
Collimating element in the emitting light path of device；
Each described leaded light device all includes relative with the laser instrument of described generation red, green, blue tricolor laser
Three optical fiberss that should arrange, each fibre-optic coupled end is provided with coupling as described
Laser coupled mouthpiece；Described coupling is arranged at the collimated of the laser instrument corresponding with this optical fibers
After light path in, and towards carrying out light direction, for receiving the laser beam that corresponding laser instrument sends；Each described
All optical fiberss of leaded light device constitute a pixel.
Full line scanning type laser display device the most according to claim 1, it is characterised in that described sharp
Optical generator module includes red laser and the blue lasers of two generation blue lasers producing red laser
Device；And it is arranged at the collimating element in the emitting light path of each laser instrument；
Each described leaded light device all includes the most corresponding setting of laser instrument with each laser generator module
Three optical fiberss, each fibre-optic coupled end is provided with coupling as described laser coupling
Close mouthpiece；Described coupling is arranged at the collimated light of the laser instrument corresponding with this optical fibers
Lu Zhong, and towards carrying out light direction, for receiving the laser beam that corresponding laser instrument sends；Each described lightguide
All optical fiberss of part constitute a pixel；
Wherein, corresponding with a wherein blue laser fibre-optic light output end is provided with fluorescent material and is coated with
Layer, described fluorescent coating is for exciting lower generation green glow at blue laser.
4. according to the full line scanning type laser display device described in Claims 2 or 3, it is characterised in that every
All optical fiberss of leaded light device described in go out the light concordant setting of end end face, and go out light end and be bonded as one；
All leaded light devices go out the light concordant setting of end end face.
Full line scanning type laser display device the most according to claim 1, it is characterised in that:
Described laser generator module includes the laser instrument producing red, green, blue tricolor laser, two two-phases
Color mirror and two corner cube prisms；
Described two-phase color mirror and two corner cube prisms are arranged at swashing of described generation red, green, blue tricolor laser
In the light path of light device, and the laser beam of all laser emittings of each light source assembly is spatially overlapped,
And propagate in the same direction；
Each described leaded light device includes and an optical fibers of each corresponding setting of laser instrument module, institute
State fibre-optic coupled end and be provided with coupling as described laser coupled mouthpiece；Described coupling connects
Head is arranged in the collimated light path of the laser instrument module corresponding with this optical fibers, and towards carrying out light
Direction, receives the redgreenblue laser beam that spatially overlaps, each fibre-optic go out light end constitute one
Pixel；All fibre-optic go out the light concordant setting of end end face, and be in line along described first direction, and
All fibre-optic go out light end be bonded as one.
Full line scanning type laser display device the most according to claim 1, it is characterised in that described in sweep
Imaging apparatus includes rotating multisurface prism or scanning pendulum len.
Full line scanning type laser display device the most according to claim 1, it is characterised in that also include
Projection display equipment.
8. one kind is used for the same of the arbitrary described full line scanning type laser display device of the claims 1 to 7
Step control method, it is characterised in that including:
Obtain the laser initializing signal of described full line scanning type laser display device；
Start timing, after postponing the first special time, by a frame letter from this initializing signal obtained temporarily
Number the control signal of the first column or row pixel be transferred to light source assembly；
Timing is started, every the second special time, under inciting somebody to action successively when described delay the first special time ends
The control signal of one column or row pixel is transferred to light source assembly, until last column or row pixel of this frame signal
Till；
Come interim at next frame signal, repeat the above steps.
Synchronisation control means the most according to claim 8, it is characterised in that the described full line of described acquisition
Also include before the laser initializing signal of scanning type laser display device: judge described full line scanning type laser
The rotating speed of the scanning means of display device is the most stable, performs the described full line of described acquisition after stabilization of speed again
The step of the laser initializing signal of scanning type laser display device.
Synchronisation control means the most according to claim 9, it is characterised in that described judgement is described whole
The rotating speed of the scanning means of row scanning type laser display device the most stably includes:
Obtain laser initializing signal continuous three times；
Judge that the time interval of double laser initializing signal is the most identical, if identical, then be considered as sweeping
Imaging apparatus rotating speed has been stablized.
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| CN106406004B (en) | 2016-12-12 | 2018-02-09 | 广景视睿科技（深圳）有限公司 | A kind of curved surface Wavelength conversion system |
| CN108919479B (en) * | 2018-06-22 | 2024-06-04 | 深圳市润沃自动化工程有限公司 | Laser reflection imaging device |
| CN109525827B (en) * | 2018-10-16 | 2021-04-27 | 歌尔光学科技有限公司 | Image processing method, device and equipment |
| CN109788264B (en) * | 2018-12-20 | 2021-04-20 | 歌尔光学科技有限公司 | Frame synchronization signal generation method and projection equipment |
| CN111866477B (en) * | 2019-04-30 | 2023-04-11 | 深圳光峰科技股份有限公司 | Image forming apparatus and method |
| CN114815484B (en) | 2019-06-20 | 2024-07-16 | 青岛海信激光显示股份有限公司 | Laser projection device |
| CN111474706B (en) * | 2020-05-13 | 2022-05-17 | 苏州路之遥科技股份有限公司 | Rotating curved surface reflection graph display method |
| CN111474705B (en) * | 2020-05-13 | 2022-08-09 | 苏州路之遥科技股份有限公司 | Single-week display device and display method thereof |
| CN115914599B (en) * | 2023-02-23 | 2023-04-28 | 北京数字光芯集成电路设计有限公司 | Scanning adjustment control method based on linear array scanning refresh delay |
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| US6175440B1 (en) * | 1994-02-02 | 2001-01-16 | Advanced Laser Technologies, Inc. | Laser beam display |
| US6154259A (en) * | 1996-11-27 | 2000-11-28 | Photera Technologies, Inc. | Multi-beam laser scanning display system with speckle elimination |
| DE19857580A1 (en) * | 1998-12-14 | 2000-06-29 | Samsung Electronics Co Ltd | Laser image large screen image projection having light source/modulation vertical sweep mirror impinging and relay lens polygonal horizontal rotating mirror reflecting horizontal sweep. |
| US6018408A (en) * | 1999-03-26 | 2000-01-25 | Samsung Electronics Co., Ltd. | Laser projection display apparatus |
| KR100785050B1 (en) * | 2006-04-21 | 2007-12-12 | 에이치비전자주식회사 | Laser Display Apparatus |
| US9052521B2 (en) * | 2010-06-07 | 2015-06-09 | Prysm, Inc. | Optical component calibration system for laser-based display device |
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