CN107229170A - The projecting apparatus and projecting method scanned based on Lie groupoid picture - Google Patents
The projecting apparatus and projecting method scanned based on Lie groupoid picture Download PDFInfo
- Publication number
- CN107229170A CN107229170A CN201710516925.5A CN201710516925A CN107229170A CN 107229170 A CN107229170 A CN 107229170A CN 201710516925 A CN201710516925 A CN 201710516925A CN 107229170 A CN107229170 A CN 107229170A
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- mirror
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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
- G03B21/142—Adjusting of projection optics
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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
- G03B21/28—Reflectors in projection beam
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention belongs to MOEMS technical field, and in particular to a kind of projecting apparatus and projecting method scanned based on Lie groupoid picture.The projecting apparatus includes twin shaft torsional micro-mirror, master control system and laser；The twin shaft torsional micro-mirror includes one can do the mirror surface of torsional mode simple harmonic oscillation in orthogonal X-axis and Y-axis；The master control system is used for storage image data and maps the movement position formation of the view data of storage and mirror surface, and the laser forms projected image after sending laser and reflected mirror-reflection according to the pixel color value of view data.Projecting apparatus of the present invention does not need the larger components such as camera lens, and simple in construction, production cost is low, and does not need manual focus, easy to operate.In addition, confession radiant of the present invention using laser as projecting apparatus, source efficiency is high, it can be mounted on more small-sized portable set.
Description
Technical field
The invention belongs to MOEMS technical field, and in particular to a kind of projecting apparatus scanned based on Lie groupoid picture
And projecting method.
Background technology
Projecting apparatus is a kind of equipment that can be projected image or video amplifier on curtain or other flat carriers, mesh
Preceding in the market it is relatively conventional be Digital Light Processor projecting apparatus using digital micromirror (DMD) as core image device,
That is DLP projector.DMD is that one piece of silicon wafer is fitted in by ranks close-packed arrays by many small reflecting optics (abbreviation micro mirror)
It is being formed on the electronic contact of piece, it is necessary to the image of projection is converted into after data signal is stored in DMD, each micro mirror
It correspond to generate a pixel of image.The light beam that light source is sent is incident upon on DMD, and the memory in DMD is according to projected image
The each micro mirror of how much controls of position and color of pixel is opened or closed, after the image after being reflected through DMD is amplified by camera lens
Just it is projected directly on screen, forms projected image.It is published in the Chinese invention patent application of on 2 24th, 2016
CN105353576A provides a kind of DLP projector of miniaturization, according to its basic functional principle, can be counted as by LED
The simple light path system constituted for radiant, dmd chip and projection lens group.The projecting apparatus has used source efficiency relatively low
LED needs during the manufacturing of projecting apparatus to carry out strict and complicated assembling and setting work as supplying radiant,
This causes its production cost higher.In addition, the projecting apparatus needs just clearly illustrate picture material by manual focus, therefore
Use process very complicated, operation inconvenience.
The content of the invention
It is an object of the present invention to provide a kind of projecting apparatus and projecting method scanned based on Lie groupoid picture, solve traditional
DLP projector exist source efficiency is low, production cost is high and uses unhandy technical problem.
The present invention technical solution be：A kind of projecting apparatus scanned based on Lie groupoid picture, it is characterized in that：
Including twin shaft torsional micro-mirror, master control system and laser；The twin shaft torsional micro-mirror include one can in orthogonal X-axis and
The mirror surface of torsional mode simple harmonic oscillation is done in Y-axis；The master control system is used for storage image data and by the image of storage
The movement position formation mapping of data and mirror surface, the laser sends laser and reflected according to the view data of storage
Projected image is formed after mirror-reflection.
Further, the mirror surface of above-mentioned twin shaft torsional micro-mirror is around the movement locus of X-axis
Wherein, A1For the number of pixels of image in the horizontal direction, f1It is mirror surface around the torsional frequency of X-axis, t is
Time of vibration,For X-axis phase deviation；
The mirror surface of the twin shaft torsional micro-mirror is around the movement locus of Y-axis
Wherein, A2It is image in the number of pixels of vertical direction, f2For mirror surface around Y-axis torsional frequency,
For Y-axis phase deviation.
Further, above-mentioned master control system includes one with A1×A2Matrix-style storage image data data buffering
Area
Further, above-mentioned projecting apparatus also includes reponse system, and the reponse system is used for acquired projections image light intensity
And the luminous intensity of laser is adjusted according to intensity of projected image degree.
Further, above-mentioned laser is red, green, blue tri-color laser.
The present invention also provides a kind of projecting method scanned based on Lie groupoid picture, and it is characterized in that, including following
Step：
1) by the chromatic numbers of RGB tri- of image A according to this1×A2Matrix-style be stored in data buffer zone；Wherein, A1For figure
As number of pixels in the horizontal direction, A2For image vertical direction number of pixels；
2) mirror surface of control twin shaft torsional micro-mirror does torsional mode simple harmonic oscillation in orthogonal X-axis and Y-axis；
3) data storage location in the movement position and data buffer zone of the mirror surface of twin shaft torsional micro-mirror is formed
Mapping；
4) movement position changed over time according to mirror surface is successively read the RGB of the image of data buffer zone memory storage
Three chromatic number evidences；
5) laser sent according to the color data point reuse lasers of RGB tri- being successively read.
Further, step 3) comprise the following steps：
3.1) by the movement locus discretization of the mirror surface of twin shaft torsional micro-mirror, the motion of one group of constant duration is obtained
Position；
3.2) according to the movement position of Fixed Time Interval successively collection mirror face, and by current kinetic position and step
1) data storage location in data buffer zone in forms one-to-one mapping relations.
Further, step 5) comprise the following steps：
5.1) chromatic numbers of RGB tri- being successively read evidence is converted into analog current；
5.2) Laser emission is carried out using the analog current as the input current of laser.
The beneficial effects of the present invention are：Mirror surface vibration frequency of the invention by controlling twin shaft torsional micro-mirror, is closed
Data buffer zone is mapped into Lissajous trajectory, and by Lissajous trajectory, the corresponding view data of each inflection point is obtained,
The transmitting laser of laser is adjusted with the view data again, so as to generate projected image.The throwing manufactured using this projection pattern
Shadow instrument does not need the larger components such as camera lens, and simple in construction, production cost is low, and does not need manual focus, easy to operate.Separately
Outside, confession radiant of the present invention using laser as projecting apparatus, source efficiency is high, can be mounted in more small-sized portable set
On.
Brief description of the drawings
The projecting apparatus preferred embodiment structural representation that Fig. 1 is scanned for the present invention based on Lie groupoid picture.
Fig. 2 carries out the waveform diagram of twisting vibration for the mirror surface of driving twin shaft torsional micro-mirror around X-axis.
Fig. 3 carries out the waveform diagram of twisting vibration for the mirror surface of driving twin shaft torsional micro-mirror around Y-axis.
Fig. 4 is mirror surface Lee's Sa such as scanning figure that twisting vibration is formed on two axial directions of X, Y of twin shaft torsional micro-mirror
Picture.
Fig. 5 gathers schematic diagram for the mirror surface movement locus discretization of twin shaft torsional micro-mirror.
Fig. 6 closes for the mirror surface movement position of twin shaft torsional micro-mirror with the mapping of data storage location in data buffer zone
It is schematic diagram.
Fig. 7 is matrix form storage schematic diagram of the view data in data buffer zone.
Wherein, reference is as follows：1-X axles, 2- lasers, 3-Y axles, 4- mirror surfaces, 5- twin shaft torsional micro-mirrors, Lee 6-
Sa such as scan image, 7- data buffer zones, 8-X axle time-domain traces, 9-Y axle time-domain traces.
Embodiment
The invention provides a kind of projecting apparatus scanned based on Lie groupoid picture, referring to Fig. 1, the structure of its preferred embodiment
Including master control system, twin shaft torsional micro-mirror 5 and laser 2.Mirror surface 4, mirror surface 4 are provided with twin shaft torsional micro-mirror 5
Can be respectively that torsional mode simple harmonic oscillation is done in rotating shaft with orthogonal X-axis 1 and Y-axis 3.Master control system is used for storage image data simultaneously
The movement position formation of the view data of storage and mirror surface 4 is mapped, laser 2 sends sharp according to the view data of storage
The projected image based on Lee's Sa such as scan image 6 is formed after light and the reflection of reflected minute surface 4.In projects images, view data
Into master control system, formed in master control system after mapping, the current kinetic position of mirror surface 4 is converted into corresponding image
Data, and by the current control to laser 2, to reach the display of different pixels color value.Below in conjunction with the accompanying drawings to this reality
The technical scheme for applying example is described in detail.
Referring to Fig. 2, mirror surface is around the movement locus of X-axis
Wherein, A1For the number of pixels (1024 are taken in the present embodiment) of image in the horizontal direction, f1It is mirror surface around X-axis
Torsional frequency, t is time of vibration,For X-axis phase deviation；
Referring to Fig. 3, mirror surface is around the movement locus of Y-axis
Wherein, A2It is image in the number of pixels (768 are taken in the present embodiment) of vertical direction, f2It is mirror surface around Y-axis
Torsional frequency,For Y-axis phase deviation.
Two dimensions that two above sine wave represents 2-D data respectively are respectively adopted in the present embodiment, just may be used after superposition
Draw Lee's Sa such as scan image for forming corresponding display picture resolution ratio as shown in Figure 4.
Referring to Fig. 5, by Lee's Sa of mirror surface such as movement locus discretization, the motion bit of one group of constant duration is obtained
Put, i.e., discrete sinusoidal wave data (Dx, Dy), wherein Dx and Dy are motion amplitude of the mirror surface in X-axis and Y-axis respectively.
Referring to Fig. 6, by the chromatic numbers of RGB tri- image to be projected A according to this1×A2Matrix-style be stored in the number of master control system
According in buffering area.For example, the first row puts in order storage according to initial data, it is 0x000~0x7FF to reserve address, it is assumed that every
Row data are less than 0x800 data, then have stored after last input data, jumped directly to 0x800, started waiting for connecing
Receive, and store the second row data.The process is repeated until completing the storage of all images data.
Referring to Fig. 7, according to the movement position of Fixed Time Interval successively collection mirror face, and will be in X-axis time-domain traces 8
And the discrete movement position collected on Y-axis time-domain traces 9 is formed one by one with the data storage location in data buffer zone 7
Corresponding mapping relations.In projection process, the view data in each storage location of reading just can obtain mirror surface and work as
The corresponding pixel value of preceding movement position.
By the chromatic numbers of RGB tri- being successively read according to being converted into analog current, then it is used as using the analog current input of laser
Electric current carries out Laser emission, by just forming light and shade after the reflection of twin shaft torsional micro-mirror, the two-dimensional projection image that color differs.Separately
Outside, the present embodiment can also set reponse system in projecting apparatus, for acquired projections image light intensity and according to projected image
Luminous intensity carries out Real-time Feedback adjustment to the emissive porwer of laser, improves projected image display effect.
Claims (8)
1. a kind of projecting apparatus scanned based on Lie groupoid picture, it is characterised in that：Including twin shaft torsional micro-mirror, master control system and swash
Light device；The twin shaft torsional micro-mirror includes one can do the reflection of torsional mode simple harmonic oscillation in orthogonal X-axis and Y-axis
Minute surface；The master control system is used for storage image data and reflects the movement position formation of the view data of storage and mirror surface
Penetrate, the laser forms projected image after sending laser and reflected mirror-reflection according to the pixel color value of view data.
2. the projecting apparatus according to claim 1 scanned based on Lie groupoid picture, it is characterised in that：The twin shaft is micro- to be reversed
The mirror surface of mirror is around the movement locus of X-axis
Wherein, A1For the number of pixels of image in the horizontal direction, f1It is torsional frequency of the mirror surface around X-axis, t is vibration
Time,For X-axis phase deviation；
The mirror surface of the twin shaft torsional micro-mirror is around the movement locus of Y-axis
Wherein, A2It is image in the number of pixels of vertical direction, f2For mirror surface around Y-axis torsional frequency,For Y-axis
Phase deviation.
3. the projecting apparatus according to claim 2 scanned based on Lie groupoid picture, it is characterised in that：The master control system bag
One is included with A1×A2Matrix-style storage image data data buffer zone.
4. according to any described projecting apparatus scanned based on Lie groupoid picture in claim 1-3, it is characterised in that：It is described to throw
Shadow instrument also includes reponse system, and the reponse system is used to feed back twin shaft torsional micro-mirror present position, and according to mapping graph
As the luminous intensity of data point reuse laser.
5. the projecting apparatus according to claim 4 scanned based on Lie groupoid picture, it is characterised in that：The laser is
Red, green, blue tri-color laser.
6. a kind of projecting method scanned based on Lie groupoid picture, it is characterised in that comprise the following steps：
1) by the chromatic numbers of RGB tri- of image A according to this1×A2Matrix-style be stored in data buffer zone；Wherein, A1Exist for image
The number of pixels of horizontal direction, A2For image vertical direction number of pixels；
2) mirror surface of control twin shaft torsional micro-mirror does torsional mode simple harmonic oscillation in orthogonal X-axis and Y-axis；
3) the data storage location formation in the movement position and data buffer zone of the mirror surface of twin shaft torsional micro-mirror is mapped；
4) movement position changed over time according to mirror surface is successively read the colors of RGB tri- of the image of data buffer zone memory storage
Data；
5) laser sent according to the color data point reuse lasers of RGB tri- being successively read.
7. it is according to claim 6 based on Lie groupoid picture scan projecting method, it is characterised in that step 3) include with
Lower step：
3.1) by the movement locus discretization of the mirror surface of twin shaft torsional micro-mirror, the motion bit of one group of constant duration is obtained
Put；
3.2) according to the movement position of Fixed Time Interval successively collection mirror face, and by current kinetic position and step 1) in
Data buffer zone in data storage location form one-to-one mapping relations.
8. the projecting method scanned based on Lie groupoid picture according to claim 6 or 7, it is characterised in that step 5) bag
Include following steps：
5.1) chromatic numbers of RGB tri- being successively read evidence is converted into analog current；
5.2) Laser emission is carried out using the analog current as the input current of laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710516925.5A CN107229170B (en) | 2017-06-29 | 2017-06-29 | Projection method based on Lissajous image scanning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710516925.5A CN107229170B (en) | 2017-06-29 | 2017-06-29 | Projection method based on Lissajous image scanning |
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| CN107229170A true CN107229170A (en) | 2017-10-03 |
| CN107229170B CN107229170B (en) | 2020-05-15 |
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| CN108803005A (en) * | 2018-06-08 | 2018-11-13 | 北京大汉正源科技有限公司 | A kind of two dimension MEMS galvanometer control methods |
| CN109752839A (en) * | 2018-12-18 | 2019-05-14 | 华为技术有限公司 | Processor, display control unit, system, image processing method and device |
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| CN108803005A (en) * | 2018-06-08 | 2018-11-13 | 北京大汉正源科技有限公司 | A kind of two dimension MEMS galvanometer control methods |
| CN109752839A (en) * | 2018-12-18 | 2019-05-14 | 华为技术有限公司 | Processor, display control unit, system, image processing method and device |
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| Publication number | Publication date |
|---|---|
| CN107229170B (en) | 2020-05-15 |
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