CN105892199A - Laser projector - Google Patents
Laser projector Download PDFInfo
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- CN105892199A CN105892199A CN201410782312.2A CN201410782312A CN105892199A CN 105892199 A CN105892199 A CN 105892199A CN 201410782312 A CN201410782312 A CN 201410782312A CN 105892199 A CN105892199 A CN 105892199A
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Abstract
The present invention discloses a portable laser projector. The projector comprises: a laser light source module, a laser modulation module, a scanning module and an imaging module. The laser modulation module is configured to modulate laser light source according to the image data. The scanning module is configured to perform two-dimensional scanning of the modulation laser emitted by the laser light energy module to form images. The imaging module is configured to rectify the scanned laser images. The mini laser projector is simple in structure, high in efficiency, small in size and low in cost.
Description
Technical field
The present invention relates to a kind of projector equipment, particularly relate to a kind of laser projection for projection demonstration
Instrument.
Background technology
Along with the development of Human optical's technology, optical projection technology obtains extensively in increasing field
Application.Such as, shadow casting technique can apply at radiomovies broadcasting, office demonstration, hologram three-dimensional
The aspects such as imaging.These technology are that the life of the mankind brings great convenience.
Business people sometimes carries miniature laser projector and goes out to handle official business, in order to coordinated by projector at any time
Computer is demonstrated, and thus eliminates and transports the loaded down with trivial details of large-scale slide set.But prior art
In, the resolution of this miniature laser projector is low, and light intensity is poor, often effect when demonstrating
It is affected.
So, those skilled in the art awaits researching and developing the miniature laser projection that a kind of resolution is higher
Instrument.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the throwing of miniature laser projector in prior art
Shadow effect resolution is low, the problem that light intensity is not enough, it is provided that a kind of new micro laser-projector.
The present invention solves above-mentioned technical problem by following technical proposals:
A kind of laser-projector, including laser light source module, modulation module and scan module, described
Modulation module couples with laser light source module signal and enters described laser light source module according to view data
Row modulation is to produce laser image signal；Described scan module is optical coupled with described laser light source module
And deflect described laser image signal with the most in the first direction and the second direction vertical with first direction
Produce projecting beam.
It is preferred that described scan module comprises a microelectromechanical-systems (MEMS).
It is preferred that described microelectromechanical-systems includes a twin shaft microelectromechanical-systems.
It is preferred that described twin shaft microelectromechanical-systems includes that a magnet system and is suspended in described Magnet system
Unite the refractive body in produced magnetic field；Described magnet system drive described refractive body around the first rotating shaft and
The second rotating shaft being perpendicular to the first rotating shaft rotates to deflect described laser image signal sequentially along described first
Direction and described second direction produce described projecting beam.
It is preferred that described refractive body includes an optical mirror plane, described optical specular reflection laser image is believed
Number to produce described projecting beam.
It is preferred that described first rotating shaft and described second rotating shaft intersect at a bit on described optical mirror plane.
It is preferred that described laser image signal is projected to described on described optical mirror plane a bit.
It is preferred that the described refractive body being suspended in the produced magnetic field of described magnet system includes a deflection
Coil, described deflection coil and the produced magnetic field interaction of described magnet system are to drive described refractive power
Body rotates around described first rotating shaft and described second rotating shaft.
It is preferred that projector also includes an image-forming module optical coupled with described scan module, institute
State the projecting beam that the regular described scan module of image-forming module produces.
It is preferred that described laser light source module include laser tube red, blue, green and be arranged on described red,
Color lens between laser tube blue, green and scan module.
It is preferred that described red laser tube power is 0.09 watt, blue laser tube power is 0.060 watt,
Green laser tube power is 0.035 watt.
It is preferred that described three laser tubes are continuous laser transmitting tube.
It is preferred that described modulation module includes image signal processing blocks and scanning signal synchronization module,
Described image signal processing blocks sends color and luminance signal instruction, institute to described laser light source module
State scanning signal synchronization module to described scan module send with color and luminance signal command synchronization inclined
Turn instruction.
It is preferred that also include being arranged between described scan module and described image-forming module and with described tune
The first sensor of molding block signal coupling, described first sensor senses the projection of described scan module
Light beam reaches described tune moulding module to produce scanning feedback signal.
It is preferred that also include being arranged at the light path between described laser light source module and scan module and with
Second sensor of described modulation module signal coupling, LASER Light Source described in described second sensor sensing
The laser image signal of module reaches described tune moulding module to produce image feedback signal.
It is preferred that described scan module produces projecting beam, described scan module in mode the most in the same direction
Project after each two field picture terminates, the initial throwing of the original projection point of next frame image and previous frame image
Exit point is identical.
It is preferred that described scan module produces projecting beam, described scan module with reciprocating manner line by line
Project after each two field picture terminates, the initial throwing of the original projection point of next frame image and previous frame image
Exit point is identical.
It is preferred that described scan module produces projecting beam, described scan module with reciprocating manner line by line
Project after each two field picture terminates, the final throwing of the original projection point of next frame image and previous frame image
Exit point is identical.
In the present invention, above-mentioned optimum condition on the basis of meeting common sense in the field can combination in any, i.e.
Obtain each preferred embodiment of the present invention.
The most progressive effect of the present invention is: this miniature laser projector architecture is reasonable, and size is little,
Low cost.
Accompanying drawing explanation
Fig. 1 is the functional block diagram according to the miniature laser projector shown in one embodiment of the invention.
Fig. 2 is the operation principle schematic diagram of miniature laser projector shown in Fig. 1.
Fig. 3 is according to the laser imaging scanning sequency figure shown in one embodiment of the invention.
Fig. 4 is according to the laser imaging scanning sequency figure shown in another embodiment of the present invention.
Fig. 5 is according to the laser imaging scanning sequency figure shown in another embodiment of the present invention.
Detailed description of the invention
The present invention is illustrated combining accompanying drawing by the way of embodiment.In the accompanying drawings, in each figure
Identical structure, element and parts use identical label.In accompanying drawing, size and the feature of element are only
As the convenient purpose illustrated, it is not offered as actual size and proportionate relationship.
Fig. 1 and Fig. 2 shows the basic training of miniature laser projector 100 according to one embodiment of the invention
Can framework.In this embodiment, laser light source module 110 produces laser.Modulation module 120 and laser
Light source module 110 signal couples, and is modulated producing to laser light source module 110 according to view data
Give birth to the laser image signal 152 of color and intensity and view data respective change.Scan module 130 is with sharp
Radiant module 110 is optical coupled and deflects the laser image signal that laser light energy source module 110 sends
152.Laser image signal 152 is scanned through the deflection of module 130 and is formed along both horizontally and vertically sweeping
The projecting beam 154 retouched.Projecting beam 154 through the adjustment of image-forming module 140, i.e. can penetrate to
Image 150 is formed on curtain wall 200.
Wherein, modulation module 120 includes signal synchronization module 124 and image signal processing blocks 122,
Image signal processing blocks 122 reads image information, sends light intensity and color to laser light source module 110
Signal instruction.Signal synchronization module 124 is sent by data line 32 to laser scanning module 130
The deflection command both horizontally and vertically gone up.
In the present embodiment, laser light source module 110 includes miniature laser pipe red, blue, green, and these swash
Light pipe front arranges color lens (not shown).Miniature laser pipe response image signal red, blue, green
The instruction that processing module 122 sends, the laser of injection respective strengths.In a preferred embodiment, red
Laser tube peak power output is 0.09 watt, and blue laser tube power is 0.060 watt, green laser tube merit
Rate is 0.035 watt.The power of these laser tubes output is sent out by the instruction of image signal processing blocks 122
Changing.
Laser scanning module 132 includes a micro machine control module (MEMS).Micro machine controls mould
Block includes twin shaft microelectromechanical-systems.Twin shaft microelectromechanical-systems includes that a magnet system and is suspended in Magnet
Refractive body in the produced magnetic field of system.Laser can be reflected or reflect by refractive body.At one
In embodiment, refractive body can include one layer of printing opacity crystal, the end face coating that crystal is injected away from laser
One layer of alternatively non-transparent material, such refractive body reflects laser to produce described projection light as a specular surface body
Bundle.In another embodiment, refractive body can also is that laser is directly carried out instead by one layer of reflectorized material
Penetrate to produce described projecting beam.The refractive body being suspended in the produced magnetic field of magnet system includes that one is inclined
Switch coil.Deflection coil and magnet system interact to drive refractive body around orthogonal two
Axle, such as trunnion axis and vertical axes, rotates with deflection laser image signal sequentially along orthogonal two
Direction, such as horizontal direction and vertical direction, produces projecting beam.Trunnion axis and vertical axes are mutually perpendicular to
And intersect at a bit on optical mirror plane.Laser image signal is projected to this point on optical mirror plane.This
Those of skill will appreciate that of field, trunnion axis and vertical axes are equivalent to the most mutually perpendicular
X-axis and Y-axis, in certain embodiments, X-axis and Y-axis can be not limited to horizontal or vertical direction.
So, on optical mirror plane, this point with laser contact maintains static relative to minute surface, optical frames
Face rotates around trunnion axis and vertical axes, thus deflects the laser image light that laser light source module 110 sends
Bundle 152, produces projecting beam 154.Image projecting beam 154 hangs down mutually along two on curtain wall 200
Project successively on straight direction.Micro machine control module 132 responds signal synchronization module 124 and passes through
Data line 32 sends deflection command, swashs around trunnion axis and vertical axes rotary optical minute surface with deflection
Light image light beam 152, sequentially projects corresponding position on curtain wall 200 by projecting beam 154.
So, picture signal is constantly passed by image signal processing blocks 122 to LASER Light Source 110
Defeated, make LASER Light Source 110 send color and light intensity, the synchronous signal synchronization module meeting certain point of image
124 synchronously send instruction to micro machine control module 132 so that micro machine scan module 132 ought
Front laser spots is incident upon the position of correspondence.So, by continuous scanning motion, micro machine
Control module 132 scans out the image of an another frame of frame.Frame, it is simply that the single width of least unit in image animation
Image frame, is equivalent to each lattice camera lens on cinematographic film.One frame is exactly a secondary static picture,
Continuous print frame is formed for animation, such as TV image etc..Frame number mentioned herein, it is simply that at 1 seconds
In the frame number of picture of transmission, it is understood that can refresh several times each second for graphic process unit, logical
Conventional fps (Frames Per Second) represents.Each frame is all static image, in extremely rapid succession
Display frame just defines the illusion of motion.High frame per second can obtain animation more smooth, more true to nature.
Frame number each second (fps), the more shown action will be more smooth.
Image-forming module 140 includes lens 142 and some other auxiliary lens, it is possible to micro machine is controlled mould
The laser projections light beam 154 that block 132 is penetrated is repaired so that image becomes regular rectangle and is suitable to
User watches.Laser projections light beam 154 is from micro machine control module 132 directive image-forming module 140, warp
Directive screen 200 after correction, and on screen, form final image 150.
In a preferred embodiment, laser scanning module 130 also includes a sensor (not shown),
Be arranged at the light path between laser light source module 110 and scan module 130 and with modulation module 120 coupling
Close, optical signal is reached signal synchronization module 124, signal synchronization module 124 thus to present image shape
Condition judges.When optical signal lacks, image signal processing blocks makes rapidly correction, and correction swashs
The luminous instruction of radiant module 110, re-emits laser, or produces error signal.
In a preferred embodiment, three laser tubes of laser light source module 110 are respectively arranged in front with biography
Sensor (not shown).Sensor be arranged near scan module 130 and with modulation module 120 signal
Coupling, it is same that the projecting beam of sensor sensing scan module 130 reaches signal with generation scanning feedback signal
Step module 124.Signal synchronization module 124 thus current light source situation is judged.When optical signal lacks
Missing the season, image signal processing blocks makes rapidly correction, and the luminescence of calibration of laser light source module 110 refers to
Order, re-emits laser, or produces error signal.
Fig. 3 shows the scanning sequency of each point of laser image according to one embodiment of the invention.Real at this
Executing in example, laser is scanned by laser scanning module 130 in mode the most in the same direction, i.e. every a line laser
The scanning sequency of point is identical, and the sweep starting point position of the most each frame picture is A point, and sweep stopping point
Position is B point.
Fig. 4 shows the scanning sequency of each point of laser image according to a further embodiment of the invention.At this
In embodiment, laser is scanned by laser scanning module 130 with reciprocating manner line by line, i.e. adjacent rows
The scanning direction of laser picture point contrary, the sweep starting point position of the most each frame picture is A point, and
Sweep stopping point position is B point.Fig. 5 shows each point of laser image according to a further embodiment of the invention
Scanning sequency.In this embodiment, laser is carried out by laser scanning module 130 with reciprocating manner line by line
The scanning direction of scanning, i.e. the laser picture point of adjacent rows is contrary, and the sweep starting point of each frame picture
Position and sweep stopping point position are contrary, i.e. the sweep starting point position of previous frame picture is A point, and scanning is eventually
Point position is B point, then the sweep starting point position of next frame picture is A ' point, and sweep stopping point position is B '
Point, then the picture recovery of next frame is A point to sweep starting point position, sweep stopping point position is B point.
In this embodiment, owing to scan module 130 is completely without homing action, it is thus possible to maximum journey
Number of image frames frequency is improved on degree.
So far, portable laser projector is set forth by the present invention with thorough way.This projection
Instrument compact size, it is possible to form projects images with bigger resolution, and be greatly improved brightness of image.
Although the foregoing describing the detailed description of the invention of the present invention, but those skilled in the art should
Understanding, these are merely illustrative of, and protection scope of the present invention is to be defined by the appended claims
's.Those skilled in the art, can be to this on the premise of without departing substantially from the principle of the present invention and essence
A little embodiments make various changes or modifications, but these changes and amendment each fall within the protection of the present invention
Scope.
Claims (18)
1. a laser-projector, including laser light source module, modulation module and scan module, it is characterised in that:
Described modulation module couples with laser light source module signal and is modulated producing laser image signal to described laser light source module according to view data；And
Described scan module is optical coupled with described laser light source module and deflects described laser image signal with the most in the first direction and the second direction vertical with first direction produces projecting beam.
2. projector as claimed in claim 1, its feature also in, described scan module comprises a microelectromechanical-systems (MEMS).
3. projector as claimed in claim 2, is further characterized in that, described microelectromechanical-systems includes a twin shaft microelectromechanical-systems.
4. projector as claimed in claim 3, is further characterized in that:
Described twin shaft microelectromechanical-systems includes the refractive body that a magnet system and is suspended in the produced magnetic field of described magnet system；And
Described magnet system drives described refractive body around the first rotating shaft and to be perpendicular to the second rotating shaft rotation of the first rotating shaft to deflect described laser image signal sequentially along described first direction and the described second direction described projecting beam of generation.
5. projector as claimed in claim 4, is further characterized in that described refractive body includes an optical mirror plane, and described optical specular reflection laser image signal is to produce described projecting beam.
6. projector as claimed in claim 5, is further characterized in that described first rotating shaft and described second rotating shaft intersect at a bit on described optical mirror plane.
7. projector as claimed in claim 6, is further characterized in that described laser image signal is projected to described on described optical mirror plane a bit.
8. projector as claimed in claim 4, is further characterized in that described refractive body includes a deflection coil, and described deflection coil and the produced magnetic field interaction of described magnet system are to drive described refractive body to rotate around described first rotating shaft and described second rotating shaft.
9. projector as claimed in claim 1, also includes an image-forming module optical coupled with described scan module, the described projecting beam that the regular described scan module of described image-forming module produces.
10. projector as claimed in claim 1, is further characterized in that, described laser light source module includes laser tube red, blue, green and the color lens being arranged between described laser tube red, blue, green and scan module.
11. projectors as claimed in claim 10, are further characterized in that, described red laser tube power is 0.09 watt, and blue laser tube power is 0.060 watt, and green laser tube power is 0.035 watt.
12. projectors as claimed in claim 11, are further characterized in that, described three laser tubes are continuous laser transmitting tube.
13. projectors as claimed in claim 1, it is further characterized in that, described modulation module includes image signal processing blocks and scanning signal synchronization module, described image signal processing blocks sends color and luminance signal instruction to described laser light source module, and described scanning signal synchronization module sends and color and the deflection command of luminance signal command synchronization to described scan module.
14. projectors as claimed in claim 13, also including the first sensor being arranged between described scan module with described image-forming module and coupling with described modulation module signal, described first sensor senses the projecting beam of described scan module and reaches described tune moulding module to produce scanning feedback signal.
15. projectors as claimed in claim 14, also including the second sensor being arranged at the light path between described laser light source module and scan module and coupling with described modulation module signal, the laser image signal of laser light source module described in described second sensor sensing reaches described tune moulding module to produce image feedback signal.
16. projectors as described in any one of claim 1 to 10, it is further characterized in that, described scan module produces projecting beam in mode the most in the same direction, and after the described scan module each two field picture of projection terminates, the original projection point of next frame image is identical with the original projection of previous frame image point.
17. projectors as described in any one of claim 1 to 10, it is further characterized in that, described scan module produces projecting beam with reciprocating manner line by line, and after the described scan module each two field picture of projection terminates, the original projection point of next frame image is identical with the original projection of previous frame image point.
18. projectors as described in any one of claim 1 to 10, it is further characterized in that, described scan module produces projecting beam with reciprocating manner line by line, and after the described scan module each two field picture of projection terminates, the original projection point of next frame image is identical with the final incident point of previous frame image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410782312.2A CN105892199A (en) | 2014-12-17 | 2014-12-17 | Laser projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410782312.2A CN105892199A (en) | 2014-12-17 | 2014-12-17 | Laser projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105892199A true CN105892199A (en) | 2016-08-24 |
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ID=56700069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410782312.2A Pending CN105892199A (en) | 2014-12-17 | 2014-12-17 | Laser projector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950782A (en) * | 2017-05-12 | 2017-07-14 | 高树坤 | A kind of method and device for being used to determine screen prjection automatic Proofreading |
| WO2018141112A1 (en) * | 2017-02-06 | 2018-08-09 | Goertek. Inc | Micro laser diode projector and electronics apparatus |
| CN110554553A (en) * | 2018-05-30 | 2019-12-10 | 宁波舜宇车载光学技术有限公司 | Color regulation control system and method for projection display |
-
2014
- 2014-12-17 CN CN201410782312.2A patent/CN105892199A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018141112A1 (en) * | 2017-02-06 | 2018-08-09 | Goertek. Inc | Micro laser diode projector and electronics apparatus |
| US11099467B2 (en) | 2017-02-06 | 2021-08-24 | Goertek Inc. | Micro laser diode projector and electronics apparatus |
| CN106950782A (en) * | 2017-05-12 | 2017-07-14 | 高树坤 | A kind of method and device for being used to determine screen prjection automatic Proofreading |
| CN110554553A (en) * | 2018-05-30 | 2019-12-10 | 宁波舜宇车载光学技术有限公司 | Color regulation control system and method for projection display |
| CN110554553B (en) * | 2018-05-30 | 2021-06-18 | 宁波舜宇车载光学技术有限公司 | Color regulation control system and method for projection display |
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Addressee: Guangdong Xinjin Photoelectric Science and Technology Co.,Ltd. Document name: Notification that Application Deemed to be Withdrawn |
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Application publication date: 20160824 |