CN105573023B - More MEMS laser projection devices and its method - Google Patents
More MEMS laser projection devices and its method Download PDFInfo
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- CN105573023B CN105573023B CN201510833568.6A CN201510833568A CN105573023B CN 105573023 B CN105573023 B CN 105573023B CN 201510833568 A CN201510833568 A CN 201510833568A CN 105573023 B CN105573023 B CN 105573023B
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Classifications
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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
- G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
- G03B21/008—Projectors using an electronic spatial light modulator but not peculiar thereto using micromirror devices
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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
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
-
- 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
- G03B21/206—Control of light source other than position or intensity
Abstract
The present invention provides a kind of more MEMS laser projection devices and more MEMS laser projections methods.Laser projection device (100) includes a video signal processing unit (110), and the laser projection module (120) coupled with video signal processing unit (110).Laser projection module (120) includes visual modulator (121), multiple laser drivers (122), multiple laser light source modules (124), multiple scanner driver modules (123) and multiple MEMS scanners (125).Video signal processing unit (110) reads inputted video image signal and picture element signal is respectively sent into corresponding laser driver (122) to drive corresponding laser light source module (124) according to picture element position information.Multiple scanner driver modules (123) drive multiple MEMS scanners (125) to be scanned projection to the laser beam of corresponding laser light source module (124) respectively.Multi-channel scanning outgoing laser beam forms projected image after a non-spherical reflector (402) carries out image flame detection.
Description
Technical field
The present invention relates to a kind of projection arrangement, more particularly to it is a kind of using multibeam laser light source and the laser of more MEMS scanners
Projection arrangement, and the implementation method of the laser projection device.
Background technology
Projector equipment using more convenient, with the maturation of continuous laser source technology, swashs in daily life and work
Optical projection device gradually develops into projector equipment of new generation.Laser projection has that image color distortion degree is small, and brightness of image is high, effect
The characteristics of fruit is stable.With the development of technology, laser projection device gradually tends to minimize, portable suitable for family, office etc.
The product of formula.
Projector distance can have a certain impact to projected picture size during portable miniature laser projection device.
When projected picture is smaller, such as resolution ratio is that 1920*720 picture display effect definition is very high, when laser projection picture increases
When, projecting the resolution ratio of output display picture be able to can decline as picture increases definition, then can directly affect video viewers
Experience.Especially in the application environment using large screen display, although display picture is amplified, but image sharpness meets
Not demand.
Therefore, to ensure that the picture that laser projection device is projected out keeps high-resolution, ensure output picture brightness and
Color is, it is necessary to the problem of improving laser projection device design intermediate-resolution, colourity and brightness characteristics.
Brief summary of the invention
For improve laser projection device export big projected picture when resolution ratio, while can guarantee that projected picture brightness,
Colourity and distortion degree, the present invention propose a kind of more MEMS (MicroElectronicMechanicalSystem, micro machines
System) laser projection device.
More MEMS laser projection devices, including the video signal processing unit handled incoming video signal, and
The laser projection module coupled with video signal processing unit.The laser projection module includes visual modulator, multiple
The laser driver of the visual modulator is coupled in, multiple LASER Light Sources for being coupled in the laser driver are multiple
The scanner driver of the visual modulator is coupled in, and multiple MEMS scannings for being coupled in the scanner driver
Device.
The video signal processing unit includes counter, for being carried out to inputted video image signal pixels positional information
Counting statistics.Visual modulator includes signal synchronization module and image signal processing blocks, and signal synchronization module is used for pair
Multiple LASER Light Source signals of more MEMS laser projection devices and the scanning signal of multiple MEMS scanners are verified that image is believed
Number processing module is handled picture signal.
According to another characteristic of the invention, the laser projection module also couples including one with more MEMS scanner opticals
Non-spherical reflector, be set as being adjusted correction to the scanning projection picture of multiple MEMS scanners.
According to another characteristic of the invention, the video signal processing unit includes a buffer, is set as to video
Picture signal is cached.When caching video signal, it can be set as caching by row, or be set as delaying by frame
Deposit.
According to another characteristic of the invention, the multiple laser driver drives the multiple LASER Light Source respectively, described
Multiple laser drivers correspond with the multiple LASER Light Source, and number is identical.
According to another characteristic of the invention, the multiple scanner driver drives the multiple MEMS scanners, institute respectively
State multiple scanner drivers to correspond with the multiple MEMS scanners, number is identical.
According to another characteristic of the invention, the multiple LASER Light Source corresponds with the multiple MEMS scanners, number
Mesh is identical.
According to another characteristic of the invention, each LASER Light Source include a red laser pipe, a green laser pipe with
An and blue laser pipe.The laser driver drives red laser pipe, green laser pipe and blue laser pipe to produce
Red laser beam, green laser beam and the blue laser beam of certain strength.Red laser beam, green laser beam and blue laser
Beam forms laser beam through lens combination.
According to another characteristic of the invention, each MEMS scanners include MEMS driving minute surfaces, to reflection laser mould
The recombination laser beam of block, and a coil for being coupled in the scanner driver.Each MEMS scanners also include a magnetic
Iron, MEMS driving minute surfaces are suspended in caused by magnet in magnetic field.
According to another characteristic of the invention, MEMS scanners are a biaxial MEMS, including coupled with MEMS driving minute surfaces
First torque arm, and the second torque arm coupled with the first torque arm.Two torque arms are mutually substantially vertical.MEMS drives minute surface
Rotated around the first rotary shaft to form a plurality of pixels in a line, and rotated around the second rotary shaft to form a plurality of pixels
OK.
According to another characteristic of the invention, multiple optical sensors are also set up in laser projection module, to each LASER Light Source
Module sends the color of laser (red laser, green laser and blue laser) and intensity is sensed, and sets multiple angles
Position sensor drives the orientation of minute surface to sense each MEMS, and the signal synchronization module of visual modulator is according to sense
Survey feedback signal checking and the uniformity of signal pixels information in image signal processing blocks.
The present invention also provides a kind of more MEMS laser projections implementation methods.
According to the essential characteristic of the present invention, more MEMS laser projections methods include：
Read video signal；
According to video signal picture element position information by video signal piecemeal；
Multiple laser-driven signals and multiple scanning drive signals are produced according to piecemeal video signal；
Multiple laser beams with certain color and intensity are produced according to the multiple laser-driven signal；And
Multiple MEMS scanners scan the multiple laser beams of projection according to multiple scanning drive signals to produce multiple sweep respectively
Retouch light beam.
According to another characteristic of the invention, the multiple MEMS scanners scan more caused by the multiple laser beams of projection respectively
Individual scanning light beam adjusts correction projected picture through a non-spherical reflector and reflects output.
According to another characteristic of the invention, the picture element position information using counter to the scan data of video signal
Line number and columns counted.
According to another characteristic of the invention, video signal data are cached using buffer.To video image
When signal data is cached, it is set as caching the data of a line, or the data of one frame picture of caching.
According to another characteristic of the invention, multiple laser-driven signals are produced according to piecemeal video signal and multiple swept
Drive signal is retouched, including sequentially successively produces the multiple laser-driven signal in a serial fashion, or is produced simultaneously in a parallel fashion
At least two laser-driven signals in raw the multiple laser-driven signal.
According to another characteristic of the invention, multiple laser-driven signals are produced according to piecemeal video signal and multiple swept
Retouching drive signal includes producing scanning signal in the same direction line by line, or produces shuttle-scanning signal line by line.
According to another characteristic of the invention, the multiple LASER Light Source is corresponded with multiple MEMS scanners and set, number
Mesh is identical.
According to another characteristic of the invention, the multiple laser driver drives multiple LASER Light Sources, multiple laser respectively
Driver is corresponded with multiple LASER Light Sources and set.
According to another characteristic of the invention, the multiple scanner driver drives multiple MEMS scanners respectively, multiple to sweep
Retouch driver and correspond setting with multiple MEMS scanners.
According to another characteristic of the invention, the multiple MEMS scanners scan throwing respectively according to multiple scanning drive signals
Penetrating multiple laser beams includes, and when there is a laser-driven signal, while starts multiple MEMS scanners；Also setting includes, when having
One laser-driven signal, open MEMS scanners corresponding with laser-driven signal generation laser beam.
Above-mentioned provided scheme of the invention, it can effectively improve laser projection device definition of big picture when projecting output and ask
Topic, and colourity, brightness and the distortion factor of video projection output picture can be ensured simultaneously.
Brief description of the drawings
Fig. 1 is the more MEMS laser projection devices basic structure block diagrams of the description present invention；
Fig. 2 is description a pair of MEMS laser projection module perspective views of the embodiment of the present invention；
Fig. 3 is the description video signal piecemeal schematic diagram of the embodiment of the present invention one；
Fig. 4 exports picture adjustment and correction output schematic diagram for the more MEMS laser projections of the present invention；
Fig. 5 is the description video signal piecemeal schematic diagram of the embodiment of the present invention two；And
Fig. 6 is the description video signal piecemeal schematic diagram of the embodiment of the present invention three.
Specific embodiment
Technical scheme proposed by the present invention is described in detail below in conjunction with each accompanying drawing.
Fig. 1 is the basic structure block diagram for describing more MEMS laser projection devices 100 proposed by the present invention.
Embodiment one is made with the design of laser projection module 120 using two laser light source modules and two MEMS scanners
For application examples.More MEMS laser projection devices 100 include：The video frequency signal processing list being read out to inputted video image signal
Member 110, the laser projection module 120 coupled with video signal processing unit 110.Video signal processing unit 110 include to regarding
Frequency picture signal picture element position information carries out the counter 140 of counting statistics.Laser projection module 120 is modulated including vision signal
Device 121, laser driver 1221 and the LASER Light Source 1241 with the coupled communication of laser driver 1221, laser driver 1222 with
And the LASER Light Source 1242 coupled with laser driver 1222, scanner driver 1231 and couple with scanner driver 1231
MEMS scanners 1251, scanner driver 1232 and the MEMS scanners 1252 coupled with scanner driver 1232.Video is believed
Number modulator 121 include to the laser intensity that LASER Light Source 1241 and 1242 is launched with color and to MEMS scanners 1251 and
The signal synchronization module 211 and image signal processing blocks 212 that 1252 scanning signal is verified.
Fig. 2 is double MEMS laser projection module perspective views.Double MEMS laser projection devices 100 have video signal
During input, video signal processing unit 110 is read out to inputted video image signal, and counter module 140 is according to video figure
Setting, which is pressed, as signal pixels positional information is sent to laser projection module by video signal piecemeal, and by video signal
Visual modulator 121 in 120.The image signal processing blocks 212 of visual modulator 121 produce picture element signal,
Laser driver 1221 and laser driver 1222 drive corresponding LASER Light Source 1241 and LASER Light Source 1242 according to picture element signal
Send the laser beam with respective color and intensity.Scanner driver 1231 drives MEMS scanners 1251 to LASER Light Source 1241
The laser beam sent is scanned projection.Scanner driver 1232 drives MEMS scanners 1252 to send tool to LASER Light Source 1242
The laser beam flying for having certain color and intensity projects.
As shown in Figure 3, video signal is laterally divided into according to setting by 302 two pieces of preceding field 301 and rear field, when
Counter 140 count judge video signal location of pixels it is corresponding before 301 pieces of field when, pixel light intensity and color signal transmission
To laser driver 1221.When counter 140 count judge that video signal location of pixels is corresponding after 302 pieces of field when, as
Plain light intensity and color signal are sent to laser driver 1222.
Laser driver 1221 sends drive signal according to the pixel light intensity and color signal of 301 pieces of video signal and driven
Dynamic LASER Light Source 1241 sends laser beam.It is right that scanner driver 1231 sends scanning drive signal driving MEMS scanners 1251
The laser beam flying projection that LASER Light Source 1241 is sent, with image in field before formation 301.Laser driver 1222 is according to video
The pixel light intensity and color signal of 302 pieces of picture signal send drive signal driving LASER Light Source 1242 and send laser beam.Sweep
Retouch driver 1232 and send the laser beam flying projection that drive signal driving MEMS scanners 1252 are sent to LASER Light Source 1242,
With image in field after formation 302.In the process, image pixel light intensity and color signal be successively sent in order mutually stress
CD-ROM driver 1221 and 1222.According to a preferred embodiment, when in laser driver 1221 or 1222 any driver have it is sharp
During optical drive signal, scanner driver 1231 drives corresponding MEMS scanners 1251 and 1252 simultaneously to 1232.According to another excellent
Embodiment is selected, when any driver has laser-driven signal in laser driver 1221 or 1222, scanner driver 1231
Or with receiving laser-driven signal in LASER Light Source 1241 or 1242 in 1232 driving MEMS scanners 1251 or 1252
The optical coupled MEMS scanners of LASER Light Source.
Optical sensor (not marking in Fig. 2) is provided with LASER Light Source 1241 and 1242 to send each laser light source module
The color and intensity of laser (red laser, green laser and blue laser) are sensed.In MEMS scanners 1251 and 1252
Being provided with angular position pick up (not marked in Fig. 2) drives the orientation of minute surface to sense each MEMS.Vision signal is modulated
Signal synchronization module 211 in device 121 is believed according to the checking of sensing feedback signal with signal pixels in image signal processing blocks 212
The uniformity of breath.
In the above embodiment of the present invention, take and image pixel light intensity and color letter are transmitted when reading video signal
Number it is sent to corresponding laser driver.Counter 140 judges that read image pixel positions correspond to video according to setting value
During image block 301, then pixel light intensity and color signal are sent to laser driver 1221.When counter 140 is according to setting value
When judging that read image pixel positions correspond to video image blocks 302, then pixel light intensity and color signal are sent to laser
Driver 1222.
The present invention can also set buffer to cache video signal.According to one preferred embodiment of the present invention,
The row data of reading are cached.When being scanned to the row data of caching, serial scan mode or parallel scan can be used
Mode.
During serial scan data, counter 140 judges that it is corresponded to according to the picture signal picture element position information scanned and regarded
Frequency image block 301, pixel light intensity and color signal are sent to laser driver 1221.Counter 140 is according to the figure scanned
As signal pixels positional information judges its corresponding video image blocks 302, pixel light intensity and color signal are sent to Laser Driven
Device 1222.During parallel scan data, while the data of the corresponding line of image block 301 and 302 in caching are scanned, by pixel light intensity and face
Chrominance signal is sent to corresponding laser driver 1221 and laser driver 1222.
The projection accordingly of above-mentioned 301 and 302 two parts video image blocks carries out picture adjustment through non-spherical reflector 402 and rectified
Just, reflection is output to giant-screen 403 and shown, projection output in Fig. 4 as illustrated.
In above-described embodiment, double MEMS laser projection devices can effectively improve projected image resolution ratio, to meet using big
During screen display, the definition demand of video pictures.
Embodiments of the invention two, it is the application design of another more MEMS laser scanning devices.In the present embodiment, laser
The projection design of module 120 is scanned throwing using four LASER Light Sources and four MEMS scanners to inputted video image signal
Shadow.
When four MEMS laser projection devices 100 have video signal input, video signal processing unit 110 is to video figure
As signal is read out, video signal is divided into four pieces by setting, longitudinal partitioned mode of the video signal per frame picture
As shown in Figure 5.
When counter 140 judges corresponding 501 pieces according to video signal picture element position information, pixel light intensity and color
Signal is sent to laser driver 1221, when counter 140 judges that video signal location of pixels is corresponding 502 pieces, pixel
Light intensity and color signal are sent to laser driver 1222, and by that analogy, picture signal location of pixels is believed according to counter 140
The judgement of breath, 503 pieces and 504 pieces of pixel light intensity and color signal are respectively sent to laser driver 1223 and 1224.
Laser driver 1221 sends drive signal driving LASER Light Source 1241 according to pixel light intensity and color signal and sent
Laser beam, scanner driver 1231 send what scanning drive signal driving MEMS scanners 1251 were sent to LASER Light Source 1241
Laser beam flying projects, to form image in 501.Laser driver 1222 sends driving letter according to pixel light intensity and color signal
Number driving LASER Light Source 1242 sends laser beam, and scanner driver 1232 sends scanning drive signal driving MEMS scanners
The laser beam flying projection that 1252 pairs of LASER Light Sources 1242 are sent, to form image in 502.The like, 503 Hes are formed respectively
Image in 504.In above process, image pixel light intensity and color signal are successively sent to corresponding laser driver in order
1221st, 1222,1223 and 1224.According to a preferred embodiment, there is sharp any one driver in aforementioned four laser driver
During optical drive signal, aforementioned four scanner driver 1231,1232,1233 and 1234 drives corresponding MEMS scanners simultaneously
1251st, 1252,1253 and 1254.According to another preferred embodiment, when any one driver in aforementioned four laser driver
When having laser-driven signal, scanner driver 1231 or 1232 or 1233 or 1234, MEMS scanners 1251 or 1252 are only driven
Or with receiving the LASER Light Source of laser-driven signal in LASER Light Source 1241 or 1242 or 1243 or 1244 in 1253 or 1254
Optical coupled MEMS scanners.
In the above embodiment of the present invention, take and image pixel light intensity and color letter are transmitted when reading video signal
Number it is sent to corresponding laser driver.By the from left to right forward scan line by line of row data, correspond to respectively video image 501,
502nd, 503 and 504 pieces；Or according to different scanning sequencies, by the reverse scan line by line from right to left of row data, correspond to regard respectively
Frequency image 504,503,502 and 501 pieces.Counter 140 is judged read image pixel positions by setting value, by image slices
Plain light intensity and color signal are respectively sent to corresponding laser driver 1221,1222,1223 and 1224.
The also settable buffer of the present invention caches to video signal.According to one preferred embodiment of the present invention, it is right
The row data of reading are cached.When being scanned to the row data of caching, serial or parallel scan mode can be used：
During serial scan row data, can according to different scanning order, by row data from left to right line by line it is positive sequentially successively
Scanning 501,502,503 and 504 sequential scan, or by row data from right to left line by line reversely sequentially successively scanning 504,
503rd, 502 and 501 sequential scan.Counter 140 is judged corresponding to it according to the picture signal picture element position information scanned
Video image blocks 501,502,503 and 504, image pixel light intensity and color signal are sequentially respectively sent to corresponding laser successively
Driver 1221,1222,1223 and 1224.
During parallel scan row data, while 501,502,503 and 504 pieces of row data are scanned, according to the image scanned
Signal pixels positional information, judge that it corresponds to video image blocks 501,502,503 and 504 respectively, by image pixel light intensity and face
Chrominance signal is sent to corresponding laser driver 1221,1222,1223 and 1224 simultaneously.
According to another preferred embodiment of the present invention, data can be read to video signal and press frame buffer.To the frame of caching
When data are scanned, serial scan mode or parallel scan mode can be used：
During serial scan frame data, can according to different scanning sequencies, by row data from left to right line by line it is positive sequentially according to
It is secondary scanning 501,502,503 and 504 data blocks, or by row data from right to left line by line reversely sequentially successively scanning 504,503,
502 and 501 data blocks.According to the picture signal picture element position information that is scanned, judge its correspond to respectively video image blocks 501,
502nd, 503 and 504, by image pixel light intensity and color signal be sequentially respectively sent to successively corresponding laser driver 1221,
1222nd, 1223 and 1224.
During parallel scan frame data, while scan 501,502,503 and 504 pieces of data.According to the image letter scanned
Number picture element position information, judges that it corresponds to video image blocks 501,502,503 and 504 respectively, by image pixel light intensity and color
Signal is sent to corresponding laser driver 1221,1222,1223 and 1224 simultaneously.
Optical sensor is provided with aforementioned four LASER Light Source, what each optical sensor was sent to each LASER Light Source swashs
The color and intensity of light (respectively including red laser, green laser and blue laser) are sensed.In four MEMS scanners
Angular position pick up is provided with, each angular position pick up senses to the orientation of each corresponding MEMS drivings minute surface.Depending on
Signal synchronization module 211 in frequency signal modulator 121 is according in the checking of sensing feedback signal and image signal processing blocks 212
The uniformity of signal pixels information.
501st, the projection of 502,503 and 504 4 partial video picture signals carries out picture adjustment through non-spherical reflector 402
Shown with correcting and projecting to giant-screen 403.In this embodiment, to four MEMS scanners in laser projection module 120
Scanning direction, such as longitudinal scanning and transversal scanning, it is configured and adjusts according to application, realizes that different image projections is differentiated
Rate, meet outdoor different wide screen high definition projection demands.Such a design method both can guarantee that picture fine definition while can guarantee that
Projected picture colourity and brightness.
The embodiment of the present invention three is more MEMS laser projection devices using four laser light source modules and four MEMS scannings
Another application design of device.It is different from embodiment two, to realize different video image projection frame and meeting different resolutions
Rate demand, the present embodiment are as shown in Figure 6 to the segment partition scheme of inputted video image signal.
In embodiments of the present invention, when there is video signal input, take and transmitted when reading video signal
Image pixel light intensity and color signal are sent to corresponding laser driver.According to different scanning sequencies, can by row data from
From left to right forward scan 601,602 data blocks line by line, also can be by row data reverse scan 602,601 data line by line from right to left
Block.Counter 140 judges that it corresponds to video image blocks 601,602 respectively according to the picture signal picture element position information read,
Image pixel light intensity and color signal are respectively sent to corresponding laser driver 1221 and 1222.According to same scanning side
Formula, when counter 140 is according to the picture signal picture element position information read, judge that it corresponds to the He of video image blocks 603 respectively
604, image pixel light intensity and color signal are respectively sent to corresponding laser driver 1223 and 1224.
The also settable buffer of the present invention caches to video signal.According to one preferred embodiment of the present invention, it is right
The row data of reading are cached.When being scanned to the row data of caching, serial or parallel scan mode can be used：
During serial scan row data, 601,602 data blocks can be sequentially scanned successively by row data are positive line by line from left to right,
Also 602,601 data blocks reversely can sequentially be scanned successively line by line from right to left by row data.Counter 140 is according to the figure read
As signal pixels positional information, judge that it corresponds to video image blocks 601 and 602 respectively, by image pixel light intensity and color signal
Corresponding laser driver 1221 and 1222 is sequentially respectively sent to successively.According to same scan mode, the basis of counter 140
The picture signal picture element position information read, its corresponding video image blocks 603 and 604 is judged, by image pixel light intensity and face
Chrominance signal is sequentially respectively sent to corresponding laser driver 1223 and 1224 successively.
During parallel scan row data, while scanning includes 601,602 pieces of data row, or scanning includes 603,604 simultaneously
The data row of block., will when judging its corresponding video image blocks 601 and 602 according to the picture signal picture element position information read
Image pixel light intensity and color signal are sent to corresponding laser driver 1221 and 1222 simultaneously.Believed according to the image read
Number picture element position information, when judging its corresponding video image blocks 603 and 604, image pixel light intensity and color signal are passed simultaneously
Deliver to corresponding laser driver 1223 and 1224.
According to another preferred embodiment of the present invention, frame buffer can be pressed to the video signal of reading.To the frame number of caching
During according to being scanned, serial scan mode or parallel scan mode can be used：
During serial scan frame data, 601,602 data blocks can be sequentially scanned successively by row data are positive line by line from left to right,
Also 602,601 data blocks reversely can sequentially be scanned successively line by line from right to left by row data.According to the picture signal picture scanned
Plain positional information, when judging that it corresponds to video image blocks 601 and 602 respectively, by image pixel light intensity and color signal sequentially according to
It is secondary to be respectively sent to corresponding laser driver 1221 and 1222.According to same scan mode, according to the image letter scanned
Number picture element position information, when judging that it corresponds to video image blocks 603 and 604 respectively, image pixel light intensity and color signal are pressed
Sequence is respectively sent to corresponding laser driver 1223 and 1224 successively.
During parallel scan frame data, while scan 601,602,603 and 604 pieces of data.According to the image letter scanned
Number picture element position information, when judging that it corresponds to video image blocks 601,602,603 and 604 respectively, by image pixel light intensity and face
Chrominance signal is sent to corresponding laser driver 1221,1222,1223 and 1224 simultaneously.
In addition, according to different video signal partitioned modes, four MEMS scanners are respectively to corresponding laser light
During the light beam of source projection is scanned, MEMS scanner lateral shaft rotation sweeps and longitudinal axis rotation sweep are formed respectively
A plurality of Pixel Informations it is different from embodiment two, the picture pixel for projecting output is then different.
Each laser driver of laser projection module 120 sends drive signal driving according to pixel light intensity and color signal
Corresponding LASER Light Source, and each scanner driver send the work side that scanning drive signal drives corresponding MEMS scanners
Formula, and the signal synchronization module 211 of visual modulator 121 scan to each LASER Light Source signal and each MEMS respectively
The implementation process that the scanning signal of device is verified is identical with embodiment two, is not stated otherwise in this embodiment.
In a particular application, when four MEMS scanners scan positions set different, four road MEMS scanners projection outputs
The resolution ratio that picture is reached also can be different.Embodiment three is the big picture laser projection application of more MEMS laser projection devices 100
Another design method.
More MEMS laser projection devices 100 proposed by the present invention, the multiple drivers of laser in its laser projection module 120
Module 122, multiple scanner driver modules 123, multiple laser light source modules 124 and multiple MEMS scanner modules 125,
Can be according to the self-defined number N of different application demand.
Technical scheme is described above in association with specific embodiment, but it should be appreciated by those skilled in the art,
The above is merely illustrative of, and protection scope of the present invention is limited by appended claims.Those skilled in the art exist
On the premise of technical principle and substantive content of the invention, numerous variations or change can be carried out to embodiment, these
Change and change all should fall into protection scope of the present invention.
Claims (21)
1. a kind of more MEMS laser projection devices, there is the video frequency signal processing list handled inputted video image signal
Member, it is characterised in that more MEMS laser projection devices include a laser projection module, and the laser projection module includes：
One visual modulator coupled with the video signal processing unit；
Multiple laser drivers for being coupled in the visual modulator；
Multiple LASER Light Sources for being coupled in the multiple laser driver；
Multiple scanner drivers for being coupled in the visual modulator；And
Multiple MEMS scanners for being coupled in the multiple scanner driver；
Wherein, the video signal processing unit includes counter, and counter is used for inputted video image signal pixels position
Information carries out counting statistics, and while the counter reads the video signal, visual modulator is according to
The video signal read send corresponding to drive signal to the corresponding laser driver.
2. institute in more MEMS laser projection devices according to claim 1, in addition to one and the laser projection module
State the non-spherical reflector of multiple MEMS scanner opticals couplings.
3. more MEMS laser projection devices according to claim 1, it is characterised in that the video signal processing unit bag
Include a buffer.
4. more MEMS laser projection devices according to claim 1, it is characterised in that：
The multiple MEMS scanners include multiple Angle Position inductors；
The multiple LASER Light Source includes multiple light intensity inductors；And
The visual modulator includes a signal synchronization module, with the multiple Angle Position inductor and the light intensity sense
Device is answered to couple.
5. more MEMS laser projection devices according to claim 1, it is characterised in that the multiple LASER Light Source it is each
LASER Light Source includes a red laser pipe, a green laser pipe and a blue laser pipe, is driven with the multiple laser
A corresponding laser driver coupling in dynamic device.
6. more MEMS laser projection devices according to claim 1, it is characterised in that the multiple MEMS scanners it is every
Individual MEMS scanners include：
One magnet；
One is coupled in the coil of a respective scanned driver；And
One is mechanically coupled to the coil and is suspended in the driving minute surfaces of the MEMS caused by the magnet in magnetic field.
7. more MEMS laser projection devices according to claim 6, it is characterised in that the MEMS scanners include：
One the first torque arm coupled with MEMS driving minute surfaces；And
One perpendicular to first torque arm and the second torque arm for being coupled with first torque arm.
8. more MEMS laser projection devices according to claim 1, it is characterised in that the multiple LASER Light Source with it is described
Multiple MEMS scanners numbers are identical, correspond optical coupled.
9. a kind of more MEMS laser projections implementation methods, including：
Read video signal；
According to video signal picture element position information by video signal piecemeal；
Counting statistics is carried out to inputted video image signal pixels positional information；Produced according to piecemeal video signal multiple sharp
Optical drive signal and multiple scanning drive signals；
Multiple multiple laser beams for having certain color and intensity are produced according to the multiple laser-driven signal；And
Multiple MEMS scanners scan the multiple laser beam of projection according to multiple scanning drive signals to produce multiple sweep respectively
Retouch light beam；
Wherein, counting statistics is carried out to inputted video image signal pixels positional information using counter；Described in counter is read
While video signal, visual modulator driving according to corresponding to being sent the video signal read
Signal is to the corresponding laser driver.
10. more MEMS laser projections implementation methods according to claim 9, in addition to described in aspherical reflection adjustment correction
Multiple scanning light beams.
11. more MEMS laser projections implementation methods according to claim 9, it is characterised in that described to believe according to video image
Video signal piecemeal is included caching video signal by number picture element position information.
12. more MEMS laser projections implementation methods according to claim 11, it is characterised in that described to believe video image
Number carrying out caching includes caching video signal by row.
13. more MEMS laser projections implementation methods according to claim 11, it is characterised in that described to believe video image
Number carrying out caching is included to video signal by frame buffer.
14. more MEMS laser projections implementation methods according to claim 11,12 or 13, it is characterised in that the foundation point
Block video signal, which produces multiple laser-driven signals and multiple scanning drive signals, to be included sequentially successively producing in a serial fashion
Raw the multiple laser-driven signal.
15. more MEMS laser projections implementation methods according to claim 11,12 or 13, it is characterised in that the foundation point
Block video signal, which produces multiple laser-driven signals and multiple scanning drive signals, to be included producing institute simultaneously in a parallel fashion
State at least two laser-driven signals in multiple laser-driven signals.
16. more MEMS laser projections implementation methods according to claim 9 or 11, it is characterised in that described to be regarded according to piecemeal
Frequency picture signal, which produces multiple laser-driven signals and multiple scanning drive signals, to be included producing scanning signal in the same direction line by line.
17. more MEMS laser projections implementation methods according to claim 9 or 11, it is characterised in that described to be regarded according to piecemeal
Frequency picture signal, which produces multiple laser-driven signals and multiple scanning drive signals, to be included producing shuttle-scanning signal line by line.
18. more MEMS laser projections implementation methods according to claim 9, it is characterised in that described to believe according to video image
Video signal piecemeal is included entering the line number and columns of video signal picture element position information by number picture element position information
Row counts.
19. more MEMS laser projections implementation methods according to claim 9, it is characterised in that the multiple MEMS scanners
Scanning the multiple laser beams of projection respectively according to multiple scanning drive signals stress including every MEMS scanners scanning one phase of projection
Light beam.
20. more MEMS laser projections implementation methods according to claim 19, it is characterised in that the multiple MEMS scannings
Device scans the multiple laser beams of projection according to multiple scanning drive signals respectively to be included, and when there is a laser-driven signal, is started simultaneously
Multiple MEMS scanners.
21. more MEMS laser projections implementation methods according to claim 19, it is characterised in that the multiple MEMS scannings
Device scans the multiple laser beams of projection according to multiple scanning drive signals respectively to be included, and when there is a laser-driven signal, is opened and is somebody's turn to do
Laser-driven signal produces the corresponding MEMS scanners of laser beam.
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| CN105933685B (en) * | 2016-07-05 | 2018-07-10 | 全普光电科技(上海)有限公司 | The micro- projection arrangement of ultra-wide angle |
| EP3504695A1 (en) * | 2016-09-07 | 2019-07-03 | Eski Inc. | Projection systems for distributed manifestation and related methods |
| CN107911677A (en) * | 2017-12-04 | 2018-04-13 | 歌尔股份有限公司 | Projecting method and equipment |
| CN108810499B (en) * | 2017-12-15 | 2020-04-24 | 成都理想境界科技有限公司 | Correcting system for projection geometric deformation of optical fiber scanning imaging equipment |
| CN108810310B (en) * | 2018-03-15 | 2020-09-15 | 成都理想境界科技有限公司 | Scanning imaging method and scanning imaging device |
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| CN100489644C (en) * | 2003-04-24 | 2009-05-20 | 明基电通股份有限公司 | Projecting unit inside portable electronic equipment |
| US7468831B2 (en) * | 2007-02-20 | 2008-12-23 | Miradia, Inc. | Contrast with fast response light source |
| US7871165B2 (en) * | 2007-11-30 | 2011-01-18 | Eastman Kodak Company | Stereo projection apparatus using polarized solid state light sources |
| CN201892790U (en) * | 2010-11-03 | 2011-07-06 | 徐英舜 | Microarray type laser scanning protection device |
| JP2013161069A (en) * | 2012-02-09 | 2013-08-19 | Hitachi Media Electoronics Co Ltd | Image display unit |
| CN103439858A (en) * | 2013-02-22 | 2013-12-11 | 杭州能基科技有限公司 | Laser digital projector |
| JP2015018051A (en) * | 2013-07-10 | 2015-01-29 | キヤノン株式会社 | Image projection device and image display system |
| CN104570556B (en) * | 2013-10-21 | 2016-08-17 | 光宝科技股份有限公司 | Micro-projection arrangement and its control method |
| CN204331259U (en) * | 2014-12-17 | 2015-05-13 | 广东新锦光电科技有限公司 | Laser-projector |
| CN205210496U (en) * | 2015-11-25 | 2016-05-04 | 全普光电科技(上海)有限公司 | Many MEMS laser projection device |
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