CN106950782A - A kind of method and device for being used to determine screen prjection automatic Proofreading - Google Patents
A kind of method and device for being used to determine screen prjection automatic Proofreading Download PDFInfo
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- CN106950782A CN106950782A CN201710332096.5A CN201710332096A CN106950782A CN 106950782 A CN106950782 A CN 106950782A CN 201710332096 A CN201710332096 A CN 201710332096A CN 106950782 A CN106950782 A CN 106950782A
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- signal
- screen
- induction installation
- camera lens
- screen induction
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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
- G03B21/14—Details
- G03B21/147—Optical correction of image distortions, e.g. keystone
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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
Abstract
The present invention relates to a kind of projector equipment, specifically a kind of method and device for being used to determine screen prjection automatic Proofreading.A kind of device for being used to determine screen prjection automatic Proofreading, including projecting apparatus, also the screen induction installation including being arranged on screen display location corner；Camera lens servo control mechanism is additionally provided with projecting apparatus, camera lens servo control mechanism is connected and can controlled the motion that projector lens carry out 360 degree with projector lens；Checking module, checking module and the electrical connection of camera lens servo control mechanism are pre-installed in projecting apparatus, screen induction installation feeds back signal to checking module；Checking module includes light-beam transmitter and controller, and light-beam transmitter follows projector lens to move, and controller receives screen induction installation signal after processing comparison, and instruction is sent to camera lens servo control mechanism.The mode that the present invention is combined using software and hardware, is automatically proofreaded to the projector equipment for determining screen, and check and correction effect is more preferable, it is to avoid the problem of manually adjusting the check and correction effect difference being likely to occur.
Description
Technical field
The present invention relates to a kind of projector equipment, specifically a kind of method and device for being used to determine screen prjection automatic Proofreading.
Background technology
Projecting apparatus be it is a kind of can be by the equipment on image or VIDEO PROJECTION to projection screen, it is projected on projection screen
Image or video several times or decades of times are presented in the case where keeping definition and is amplified, be convenient for people to viewing,
Give people the open visual field, therefore receive praises from customers.But current projecting apparatus, laser movie theatre etc. there are many fixation
The projector equipment of screen, i.e. screen position are fixed, and drop shadow spread is fixed, and the position that these projector equipments need also exist for projecting apparatus will
It is fixed, once displacement is accomplished by re-starting adjustment, particularly with the laser cinema projection systems of short focus, accurately it is directed at screen
Careful mobile projector device is needed, and because focal length is very short, manual setting is difficult to obtain optimum focusing, if desktop and metope
There are perpendicularity and angle equal error also to influence the effect and definition of display, it is difficult to obtain optimized image size and display effect
Really.
The content of the invention
Problem to be solved by this invention is to overcome the deficiencies in the prior art there is provided one kind for determining the automatic school of screen prjection
To method and device, it can automatically carry out the check and correction of screen size and focal length.
To solve the above problems, the technical solution adopted by the present invention is：A kind of dress for being used to determine screen prjection automatic Proofreading
Put, including projecting apparatus, also including screen induction installation, the screen induction installation is arranged on the corner of screen display location；
Camera lens servo control mechanism is additionally provided with projecting apparatus, the camera lens servo control mechanism is connected with projector lens and can control projecting apparatus mirror
Head carries out 360 degree of motion；Checking module, checking module and camera lens the servo control mechanism electrical connection, institute are pre-installed in projecting apparatus
State screen induction installation and feed back signal to checking module；The checking module includes light-beam transmitter and controller, the light beam
Transmitter follows projector lens to move, and controller receives screen induction installation signal after processing comparison, to camera lens servo
Structure sends instruction.
It is preferred that, the light-beam transmitter can launch the letter of mutually perpendicular modulation laser signal light beam a and square
Number light beam b；The modulation laser signal light beam first passes through spatial digitalized FM encoding in advance, and along side vertical with itself
To being constantly scanned, the square signal beams b is as low as slowly amplified to cloth flooding greatly certainly.
It is preferred that, the screen induction installation uses light sensor.
It is preferred that, the screen induction installation is counted in real time by the modes such as cable, network or bluetooth and checking module
According to contact.
It is preferred that, the checking module is also associated with alarm device.
A kind of method for being used to determine screen prjection automatic Proofreading, comprises the following steps：
(1) projecting apparatus is opened, into adjustment state, projecting apparatus launches the square signal beams of a maximum magnitude, simultaneously
Camera lens does the Fast Activities of maximum magnitude, and screen induction installation is capped feedback signal；
(2) when the equal feedback signal of four screen induction installations, projecting apparatus enters adjust automatically state；When projecting apparatus is launched
Light beam when can not all cover four screen induction installations, checking module, which sends signal, makes alarm device alarm, it is desirable to artificial
Intervene, carry out artificial coarse adjustment, can all be received to four screen induction installations after beam signal, into adjust automatically shape
State；
(3) light-beam transmitter can launch the signal beams b of mutually perpendicular modulation laser signal light beam a and square；
The modulation laser signal light beam is constantly scanned, and the square signal beams b is as low as slowly amplified to cloth greatly certainly
Flooding；When the signal beams b of square covers some screen induction installation, modulation laser signal light beam scanning to screen
Curtain induction installation, screen induction installation carries out signal feedback to checking module；
(4) checking module is contrasted the signal for proofreading module feedback with prefabricated reference signal, extracts error signal
Form correction instruction, control camera lens servo control mechanism correction, until screen induction installation receives four corners of laser beam
Position signalling, now projected light beam overlapped with four corners with screen induction installation, location of projection adjustment terminates；
(5) definition is adjusted, and the adjustment before and after lens focus is carried out, the light signal that screen induction installation is sensed is anti-
Feed controller, if controller analyte signal intensity is progressively strengthening, order camera lens servo control mechanism continues according to current tune
Perfect square is to adjustment；Progressively declining if controller receives the signal intensity that screen induction installation senses, according to opposite
Direction is adjusted；When the signal that screen induction installation is received, which reaches, most to be started to decline by force, illustrate to reach most
Good focal length state, controller calculates intensity drop point to the location parameter of current point, then controls camera lens servo control mechanism reversely micro-
Adjust, reach and most emphasize entire signal, Focussing terminates.
The operation principle of the present invention is specific as follows：
Screen induction installation is placed on to the corner of view field, projection signal can be sensed and fed back.
Location aware of the screen induction installation to drop shadow spread is realized using laser adjustment beam modulation, laser is a kind of light
Frequency electromagnetic waves, with good coherence, information is loaded on laser by utilization space digitized FM coding turns into modulation laser
Signal beams, spatial digitalized FM encoding is one kind of spatial intensity modulation coding, and it, which is used, makes in beam cross-section not
There are different light pulses with position, and show as digitized signal.Adjusted in laser in the cross section of light beam projection (screen),
With two mutually orthogonal shape of rectangular ribbon light beam mixed sweeps, the signal beams of the synchronous square of transmitting when screen midpoint is arrived in scanning
B, two outer side edges that the edge that two laser adjust light beams should be respectively with the synchronizing signal light beam of square are overlapped, and laser is adjusted
The translational speed of side should be consistent when the speed of whole light beam scanning expands with the synchronizing signal light beam of square, can so protect
The synchronizing signal light beam outer side edges for demonstrate,proving laser adjustment light beam and square reach screen induction installation simultaneously, and then perceived and anti-
Feedback.
Be prefixed in checking module lens location it is accurate when, screen induction installation receive laser adjust light beam numeral
Signal, and if lens location is not right, then it sends laser adjustment light beam and the signal beams b of square just also can be with identical
Angular error be projected on screen.Like this, when the signal beams b that laser adjusts light beam and square reaches screen sensing
It is not that screen induction installation is reached with state horizontally or vertically during device, but deflected condition at a certain angle reaches
Screen induction installation, the data signal that such words screen induction installation position is received is necessarily different, is received actual
To data signal and preset digital signal sequences be compared, base this extract error signal formation correction instruction.
Camera lens servo-drive system is received after correction instruction, is acted, while the flashlight of laser adjustment light beam and square
Beam b is still in continuous scanning transmitting, and until projected light beam is overlapped with four corners with sensor, position adjustment terminates.
Adjustment on focal length：Controller control camera lens servo control mechanism focusing carries out front and rear adjustment, screen sensing dress
Put the light signal sensed and feed back to controller, if controller analyte signal intensity is progressively strengthening, order camera lens is watched
Mechanism is taken to continue to adjust according to current adjustment direction；Exist if controller receives the signal intensity that screen induction installation senses
Progressively decline, be then adjusted according to opposite direction；Most start under appearance by force when the signal that screen induction installation is received is reached
When drop, illustrate to reach pinpointed focus state, controller calculates intensity drop point to the location parameter of current point, then controls
Camera lens servo control mechanism is reversely finely tuned, and is reached and is most emphasized entire signal, and Focussing terminates.
On artificial coarse adjustment：Projecting apparatus can launch the square signal beams of a maximum magnitude first, while camera lens is done most
Large-scale Fast Activities, can feedback signal after screen induction installation is capped；When four equal feedback signals of screen induction installation
When, projecting apparatus enters adjust automatically state；When the light beam that projecting apparatus is launched can not all cover four screen induction installations, table
Bright lens location is too big with reference position gap, and checking module, which sends signal, makes alarm device alarm, it is desirable to manual intervention, carries out
Artificial coarse adjustment；
The beneficial effects of the present invention are：The mode being combined using software and hardware, automatically to determining the projection of screen
Equipment is proofreaded, and check and correction effect is more preferable, it is to avoid manually adjust the problem of check and correction effect being likely to occur is poor.
Reference
Screen prjection state when Fig. 1 is normal display；
The signal beams state of modulation laser signal light beam and square when Fig. 2 is normal display；
Screen prjection state when Fig. 3 is abnormal display；
The signal beams state of laser signal light beam and square is modulated when Fig. 4 is abnormal display；
Fig. 5 is the structure connection block diagram of the present invention；
Fig. 6 is the flow chart of software section in the present invention.
Wherein reference is as follows：
1st, projecting apparatus；2nd, screen induction installation；3rd, camera lens servo control mechanism；4th, checking module；41st, light-beam transmitter；42nd, control
Device processed；A, modulation laser signal light beam；B, square signal beams.
Embodiment
The present invention is described further below in conjunction with the accompanying drawings：
A kind of device for being used to determine screen prjection automatic Proofreading, including projecting apparatus 1, it is described also including screen induction installation 2
Screen induction installation 2 is arranged on the corner of screen display location；Camera lens servo control mechanism 3, the mirror are additionally provided with projecting apparatus 1
Head servo control mechanism 3 is connected and can controlled the motion that the camera lens of projecting apparatus 1 carries out 360 degree with the camera lens of projecting apparatus 1；It is pre- in projecting apparatus 1
Checking module 4 is filled, the checking module 4 and camera lens servo control mechanism 3 are electrically connected, and the screen induction installation 2 feeds back signal to school
To module 4；The checking module 4 includes light-beam transmitter 41 and controller 42, and controller 42 receives the signal of screen induction installation 2
After being compared through processing, instruction is sent to camera lens servo control mechanism 3.
Light-beam transmitter 41 can launch the signal beams b of mutually perpendicular modulation laser signal light beam a and square；Institute
State modulation laser signal light beam a and first pass through spatial digitalized FM encoding in advance, and it is continuous along direction vertical with itself
It is scanned, the square signal beams b is as low as slowly amplified to cloth flooding greatly certainly.
Screen induction installation 2 uses light sensor, and the screen induction installation 2 passes through the side such as cable, network or bluetooth
Formula carries out real data relation with checking module 4, and checking module 4 is also associated with alarm device 5.
A kind of method for being used to determine screen prjection automatic Proofreading, comprises the following steps：
(1) projecting apparatus 1 is opened, into adjustment state, projecting apparatus 1 launches the square signal beams of a maximum magnitude, together
Shi Jingtou does the Fast Activities of maximum magnitude, and screen induction installation 2 is capped feedback signal；
(2) when four screen 2 equal feedback signals of induction installation, projecting apparatus 1 enters adjust automatically state；When projecting apparatus 1
When the light beam launched can not all cover four screen induction installations 2, checking module 4, which sends signal, makes alarm device 5 alarm,
Ask manual intervention, carry out artificial coarse adjustment, can all be received to four screen induction installations 2 after beam signal, into automatic
Adjustment state；
(3) light-beam transmitter can launch the signal beams b of mutually perpendicular modulation laser signal light beam a and square；
The modulation laser signal light beam a is constantly scanned, and the square signal beams b is as low as slowly amplified to cloth greatly certainly
Flooding；When the signal beams b of square covers some screen induction installation 2, a scannings of modulation laser signal light beam are arrived
Screen induction installation 2, screen induction installation 2 carries out signal feedback to checking module 4；
(4) checking module 4 is contrasted the signal that checking module 4 feeds back with prefabricated reference signal, extracts error letter
Number correction instruction is formed, control camera lens servo control mechanism 3 is rectified a deviation, until screen induction installation 2 receives four sides of laser beam
The position signalling at angle, now projected light beam overlapped with four corners with screen induction installation 2, location of projection adjustment terminates；
(5) definition is adjusted, the adjustment before and after lens focus is carried out, if the signal that screen induction installation 2 is sensed
Progressively strengthening, then camera lens servo control mechanism 3 continues to adjust according to current adjustment direction, if what screen induction installation 2 was sensed
Signal intensity is progressively declining, then is adjusted according to opposite direction；Most start by force when the signal of screen induction installation 2 reaches
When now drop, illustrate to reach pinpointed focus state, projecting apparatus 1 calculates intensity drop point to the location parameter of current point,
Camera lens servo control mechanism 3 is reversely finely tuned again, reaches and most emphasizes entire signal, Focussing terminates.
As shown in figure 1, when lens location is correct, drop shadow spread should be consistent with screen position, cloth flooding；And modulate
The signal beams b states of laser signal light beam a and square as shown in Fig. 2 two modulation laser signal light beam a are orthogonal,
One is horizontality, and one is plumbness, and two modulation laser signal light beam a are from screen while being scanned to relative one side
Carry out；When y=z=0 is arrived in scanning, light-beam transmitter 41 starts the signal beams b of transmitting square, two modulation laser signals
The side adjacent with two of signal beams b of square is overlapped light beam a respectively and gait of march is consistent, so both arrive simultaneously
Up to screen induction installation 2；When lens location is correct, modulation laser signal light beam a reaches signal quilt during screen induction installation 2
Record.
When lens location not pair when, there is deviation in drop shadow spread and screen position, as shown in figure 3, drop shadow spread is not complete
Four screen induction installations 2 are lived in all standing, and at this moment camera lens can release the square signal beams b of maximum magnitude, while camera lens
The Fast Activities of maximum magnitude are done, when the light beam that projecting apparatus 1 is launched can not all cover four screen induction installations 2, are shown
Lens location is too big with reference position gap, and checking module 4, which sends signal, makes alarm device 5 alarm, it is desirable to which manual intervention is by people
Four screen induction installations 2 can be completely covered to the square signal beams b of maximum magnitude in work coarse adjustment；In adjust automatically scope
Inside occur view field it is crooked when, as shown in figure 4, modulation laser signal light beam a and square signal beams b be no longer level
State and plumbness, it is inevitable with receiving modulation laser signal light under normal condition when both reach screen induction installation 2
Beam a signaling point is different, according to the error amount between both, carry out error correction, the adjustment lens location of camera lens servo control mechanism 3 until
Lucky cloth flooding is projected, that is, reaches Fig. 1 and Fig. 2 state.
As shown in figure 5, the operation principle of the present invention is specific as follows：Screen induction installation 2 is placed on the four of view field
Angle, can sense projection signal and be fed back.Realize screen induction installation 2 to drop shadow spread using laser adjustment beam modulation
Location aware, laser is a kind of optical frequency electromagnetic wave, with good coherence, and utilization space digitized FM coding is by information
Loading on laser turns into modulation laser signal light beam a, and spatial digitalized FM encoding is one kind of spatial intensity modulation coding, it
Using making the different parts in beam cross-section that there are different light pulses, and show as digitized signal.Light is adjusted in laser
In the cross section of beam projection (screen), with two mutually orthogonal shape of rectangular ribbon light beam mixed sweeps, when screen midpoint is arrived in scanning
The signal beams b of the synchronous square of transmitting, the signal beams that two edges for modulating laser signal light beam a should respectively with square
B two outer side edges are overlapped, and modulate side when the speed and square signal beams b of laser signal light beam a scannings expand
Translational speed should be consistent, so ensure that modulation laser signal light beam a and square signal beams b outer side edges simultaneously
Screen induction installation 2 is reached, and then is perceived and feeds back.
Be prefixed in checking module 4 lens location it is accurate when, screen induction installation 2 receive laser adjust light beam number
Word signal, and if lens location is not right, then it sends laser adjustment light beam and the signal beams b of square just also can be with phase
Same angular error is projected on screen.Like this, when the signal beams b that laser adjusts light beam and square reaches screen sense
It is not that screen induction installation 2 is reached with state horizontally or vertically when answering device 2, but deflected condition at a certain angle
Screen induction installation 2 is reached, 2 data signals received of such words screen induction installation are necessarily different, will be real
The data signal and preset digital signal sequences that border is received are compared, this extraction error signal formation correction instruction of base.
Camera lens servo control mechanism 3 is received after correction instruction, is acted, while the flashlight of laser adjustment light beam and square
Beam b is still in continuous scanning transmitting, and until projected light beam is overlapped with four corners with sensor, position adjustment terminates.
Adjustment on focal length：The control camera lens of controller 42 servo control mechanism 3 carries out focal length front and rear adjustment, screen sensing
The light signal that device 2 is sensed feeds back to controller 42, if the analyte signal intensity of controller 42 is progressively strengthening, orders
Camera lens servo control mechanism 3 continues to adjust according to current adjustment direction；If controller 42 receives what screen induction installation 2 was sensed
Signal intensity is progressively declining, then is adjusted according to opposite direction；When the signal that screen induction installation 2 is received reach it is most strong
When starting to decline, illustrate to reach pinpointed focus state, controller 42 calculates intensity drop point to the position of current point
Parameter is put, then controls the reversely fine setting of camera lens servo control mechanism 3, reaches and most emphasizes entire signal, Focussing terminates.
On artificial coarse adjustment：Projecting apparatus 1 can launch the square signal beams of a maximum magnitude first, while camera lens is done most
Large-scale Fast Activities, can feedback signal after screen induction installation 2 is capped；When four equal feedback letters of screen induction installation 2
Number when, projecting apparatus 1 enter adjust automatically state；When the light beam that projecting apparatus 1 is launched can not all cover four screen induction installations 2
When, show that lens location is too big with reference position gap, checking module 4, which sends signal, makes alarm device 5 alarm, it is desirable to artificial dry
Pre- adjust projector lens to maximum magnitude can cover four screen induction installations 2.
The beneficial effects of the present invention are：The mode being combined using software and hardware, automatically to determining the projection of screen
Equipment is proofreaded, and check and correction effect is more preferable, it is to avoid manually adjust the problem of check and correction effect being likely to occur is poor.
To camera lens servo control mechanism, mature technology is present in the prior art, including is arranged on the motor below camera lens, horse
Up to driving camera lens to rotate, also need to include miscellaneous part presence certainly, because not being the innovative point of the innovation and creation, therefore herein not
Repeat again.
The above, is only presently preferred embodiments of the present invention, is not the limitation for making other forms to the present invention.Appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But it is every without departing from technical solution of the present invention content, the construction and operation principle according to the present invention are real to more than
Any simple modification, equivalent variations and remodeling that example is made are applied, the protection domain of technical solution of the present invention is still fallen within.
Claims (6)
1. a kind of device for being used to determine screen prjection automatic Proofreading, including projecting apparatus, it is characterised in that：Also include screen and sense dress
Put, the screen induction installation is arranged on the corner of screen display location；Camera lens servo control mechanism, institute are additionally provided with projecting apparatus
State the motion that camera lens servo control mechanism is connected and can controlled projector lens to carry out 360 degree with projector lens；It is pre- in projecting apparatus
Checking module is filled, checking module and camera lens the servo control mechanism electrical connection, the screen induction installation feeds back signal to check and correction mould
Block；The checking module includes light-beam transmitter and controller, and the light-beam transmitter follows projector lens to move, controller
Screen induction installation signal is received after processing comparison, instruction is sent to camera lens servo control mechanism.
2. a kind of device for being used to determine screen prjection automatic Proofreading according to claim 1, it is characterised in that：The light beam
Transmitter can launch the signal beams b of mutually perpendicular modulation laser signal light beam a and square；The modulation laser signal
Light beam first passes through spatial digitalized FM encoding in advance, and is constantly scanned along direction vertical with itself, it is described just
Square signal beams b is as low as slowly amplified to cloth flooding greatly certainly.
3. a kind of device for being used to determine screen prjection automatic Proofreading according to claim 2, it is characterised in that：The screen
Induction installation uses light sensor.
4. a kind of device for being used to determine screen prjection automatic Proofreading according to claim 1 or 3, it is characterised in that：It is described
Screen induction installation carries out real data relation by the modes such as cable, network or bluetooth and checking module.
5. a kind of device for being used to determine screen prjection automatic Proofreading according to claim 4, it is characterised in that：The check and correction
Module is also associated with alarm device.
6. a kind of method for being used to determine screen prjection automatic Proofreading, comprises the following steps：
(1) projecting apparatus is opened, into adjustment state, projecting apparatus launches the square signal beams of a maximum magnitude, while camera lens
The Fast Activities of maximum magnitude are done, screen induction installation is capped feedback signal；
(2) when the equal feedback signal of four screen induction installations, projecting apparatus enters adjust automatically state；The light launched when projecting apparatus
When Shu Buneng all covers four screen induction installations, checking module, which sends signal, makes alarm device alarm, it is desirable to manual intervention,
Artificial coarse adjustment is carried out, can all be received to four screen induction installations after beam signal, into adjust automatically state；
(3) light-beam transmitter can launch the signal beams b of mutually perpendicular modulation laser signal light beam a and square；It is described
Modulation laser signal light beam is constantly scanned, and it is all over the screen that the square signal beams b is slowly amplified to cloth greatly from as low as
Curtain；When the signal beams b of square covers some screen induction installation, screen sense is arrived in the light beam scanning of modulation laser signal
Device is answered, screen induction installation carries out signal feedback to checking module；
(4) checking module is contrasted the signal for proofreading module feedback with prefabricated reference signal, is extracted error signal and is formed
Correction instruction, control camera lens servo control mechanism correction, until screen induction installation receives the position of four corners of laser beam
Signal, now projected light beam overlapped with four corners with screen induction installation, location of projection adjustment terminates；
(5) definition is adjusted, and controller control camera lens servo control mechanism focusing carries out front and rear adjustment, the sensing of screen induction installation
To light signal feed back to controller, if controller analyte signal intensity is progressively strengthening, order camera lens servo control mechanism
Continue to adjust according to current adjustment direction；If controller receives signal intensity that screen induction installation senses under progressively
Drop, then be adjusted according to opposite direction；When the signal that screen induction installation is received reach most start by force to occur to decline when
Wait, illustrate to reach pinpointed focus state, controller calculates intensity drop point to the location parameter of current point, then controls camera lens to watch
Take mechanism reversely to finely tune, reach and most emphasize entire signal, Focussing terminates.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107911676A (en) * | 2017-11-28 | 2018-04-13 | 海信集团有限公司 | A kind of its focalization method and device for projector equipment |
| CN109307973A (en) * | 2017-07-27 | 2019-02-05 | 精工爱普生株式会社 | The control method of projector and projector |
| CN117572028A (en) * | 2024-01-19 | 2024-02-20 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Adjustment method of terahertz near-field system laser light path |
| CN117572028B (en) * | 2024-01-19 | 2024-04-30 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Adjustment method of terahertz near-field system laser light path |
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| CN105892199A (en) * | 2014-12-17 | 2016-08-24 | 广东新锦光电科技有限公司 | Laser projector |
| CN106527029A (en) * | 2016-12-30 | 2017-03-22 | 明基电通有限公司 | Automatic installation and adjustment system for projector |
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| CN109307973A (en) * | 2017-07-27 | 2019-02-05 | 精工爱普生株式会社 | The control method of projector and projector |
| CN107911676A (en) * | 2017-11-28 | 2018-04-13 | 海信集团有限公司 | A kind of its focalization method and device for projector equipment |
| CN107911676B (en) * | 2017-11-28 | 2020-03-27 | 海信集团有限公司 | Focal length adjusting method and device for projection equipment |
| CN117572028A (en) * | 2024-01-19 | 2024-02-20 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Adjustment method of terahertz near-field system laser light path |
| CN117572028B (en) * | 2024-01-19 | 2024-04-30 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Adjustment method of terahertz near-field system laser light path |
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