CN110376736A - A kind of scanning display module and near-eye display device - Google Patents
A kind of scanning display module and near-eye display device Download PDFInfo
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- CN110376736A CN110376736A CN201910364343.9A CN201910364343A CN110376736A CN 110376736 A CN110376736 A CN 110376736A CN 201910364343 A CN201910364343 A CN 201910364343A CN 110376736 A CN110376736 A CN 110376736A
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- scanner
- scanning
- display module
- fibre optic
- optical fiber
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/103—Scanning systems having movable or deformable optical fibres, light guides or waveguides as scanning elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0132—Head-up displays characterised by optical features comprising binocular systems
Abstract
The embodiment of the present application discloses a kind of scanning display module and near-eye display device, the scanner group of different directions is added in scanning display module, realize multidirectional scanning output, scanning display module integrally can also keep smaller size smaller, be conducive to the miniaturization of near-eye display device.
Description
Technical field
This application involves scanning field of display technology, and in particular to a kind of scanning display module and near-eye display device.
Background technique
Scanning display imaging can be used for Projection Display, a variety of displays such as nearly eye is shown as the emerging display technology of one kind
Scene.
In the prior art, the internal display equipment containing scanning display element can be realized a certain range of display imaging.
In certain application scenarios, it may be required that display equipment exports the image of different directions or different location.Although such as digital
The scanning angle that micro mirror element (Digital Micromirror Device, DMD) etc. scans display element is adjustable, but such sweeps
The scanning angle for retouching display element is limited, it is difficult to meet the display requirement of such scene.And if using multiple display equipment,
Higher cost and need by manual adjustment.
Summary of the invention
The application's is designed to provide a kind of scanning display module and near-eye display device, to realize multi-direction scanning
Display.
The embodiment of the present application provides a kind of scanning display module, comprising: including pedestal and at least two scanner groups,
In,
It include at least one fibre optic scanner in each scanner group, and the different scanner groups are respectively facing not
Equidirectional to be fixed on the pedestal, when work, the scanning display module scanning output forms at least two different directions
Picture, a picture are obtained by the scanner group scanning output.
Optionally, the pedestal is rotating basis, and the rotating basis rotates about the center axis thereof of top surface, different
The fibre optic scanner in the scanner group is directed away from central axis towards the central axis, output end with fixing end
The mode in direction is fixed on the rotating basis.
Optionally, the rotation mode of the rotating basis are as follows: around the central axis respectively with side clockwise and counterclockwise
To being rotated repeatedly；
Wherein, the angle automatching that the rotating basis rotates repeatedly is in the height or width of the picture of required display.
Optionally, the rotation mode of the rotating basis are as follows: continue around the central axis with side clockwise or counterclockwise
To rotation.
Optionally, the fibre optic scanner in each scanner group is one-dimensional scanning device, wherein at least includes scanning
Device encapsulating shell and the fixed part being set in the scanner encapsulating shell, one-dimensional actuation part are prolonged from the one-dimensional actuation part distal end
Stretch the optical fiber cantilever to be formed and the lens on the optical fiber cantilever emitting light path；
The one-dimensional actuation part of the fibre optic scanner is vibrated along one-dimensional square, by the rotating basis and one-dimensional actuation part band
Dynamic, the optical fiber cantilever is swept according to the scanning track of setting；
Wherein, rotational plane of the direction of vibration of the one-dimensional actuation part perpendicular to the rotating basis.
Optionally, the pedestal is actuating pedestal, common actuation portion of the actuating pedestal as each fibre optic scanner,
Stretching vibration on first direction.
Optionally, the fibre optic scanner in each scanner group is one-dimensional scanning device, wherein at least includes scanning
Device encapsulating shell and the fixed part being set in the scanner encapsulating shell, one-dimensional actuation part are prolonged from the one-dimensional actuation part distal end
Stretch the optical fiber cantilever to be formed and the lens on the optical fiber cantilever emitting light path；
The one-dimensional actuation part of the fibre optic scanner is vibrated in a second direction, by the actuating pedestal and one-dimensional actuation part band
Dynamic, the optical fiber cantilever is swept according to the scanning track of setting；The first direction and the second direction are not parallel to each other.
Optionally, the pedestal is fixed pedestal, and the fibre optic scanner in each scanner group is two-dimensional scanning
Device, wherein at least include scanner encapsulating shell and be set in the scanner encapsulating shell the first actuation part, the second actuation part,
Fixing piece, the optical fiber cantilever extended to form from second actuation part distal end and on the optical fiber cantilever emitting light path
Lens；
First actuation part is vibrated in a first direction, and second actuation part is vibrated in a second direction, by described
First actuation part and second actuation part drive, and the optical fiber cantilever is swept along the scanning track of setting, the first direction
It is not parallel to each other with the second direction.
Optionally, the fibre optic scanner in each scanner group includes: bonding, buckle with the fixed form of the pedestal
At least one of structure, integrated molding.
A kind of near-eye display device is also provided in the embodiment of the present application, wears component, light source module group, guide-lighting mould group, control
Unit and scanning display module above-mentioned, wherein
The component of wearing includes temple, frame and the bridge of the nose, to fix for wearing the near-eye display device；
The scanning display module is set in the bridge of the nose, and the scanning display module includes pedestal and two output ends towards phase
Anti- fibre optic scanner；
It is described leaded light mould group centered on the scanning display module, be symmetrically disposed on the scanning display module two sides and
Right and left eyes are corresponded respectively to, leaded light mould group described in either side includes light element, is coupled into unit, the first expanding element and the second expansion
Open up unit；
Under described control unit effect, the light source module group, which is generated, is input to the scanning for the image beam of imaging
Display module, the scanning display module to two opposite direction scanning output described image light beams, scan the institute of output respectively
State image beam by the light element be input to it is described be coupled into unit, and via first expanding element and described second
After expanding element extension, output to human eye.
Following technical effect may be implemented using the technical solution in the embodiment of the present application:
It, can be by increasing in scanning display module in the scene that actual needs carries out multi-direction large scale Projection Display
If realizing that multidirectional scanning projection is shown towards the scanner group of different directions, and it is possible to towards in same direction
Multiple fibre optic scanners are added in scanner group, carry out splicing scanning projection, project large-sized projection in the same direction
Picture.It is small in size due to fibre optic scanner itself, though the scanner group of multiple directions is set in scanning display module, and
With including multiple fibre optic scanners in scanner group, scanning display module integrally can also keep smaller size smaller, be conducive to throw
The miniaturization of shadow equipment, and can be realized the Projection Display of big visual field, for the mode for increasing projection device, the application
In mode be more advantageous to miniaturization, effectively saving space.
A set of projection equipment is often added, cost and resource consumption can be all increased, and multiple fibre optic scanners are as display
Device, increases the cost of the fibre optic scanner of respective numbers and is below to the consumption of resource and increase the projection of identical quantity and set
It is standby.
In addition, can be applied in the scene that nearly eye is shown for the scanning display module of the application, specifically,
At least two fibre optic scanners can be carried on pedestal in scanning display module, and since fibre optic scanner can be towards difference
Direction setting, so, scanning display module can be set in the bridge of the nose of near-eye display device, and fibre optic scanner on pedestal can be with
The direction for being respectively facing left and right frame scans light, and for such set-up mode, scanning display module is easy to minimize, and
The complexity of the light path design in near-eye display device can be simplified, further such that near-eye display device is easy to minimize.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon:
Fig. 1 is a kind of structural schematic diagram of illustrative scan display system provided by the embodiments of the present application；
Fig. 2 is a kind of structural schematic diagram of fibre optic scanner provided by the embodiments of the present application；
Fig. 3 is the structural schematic diagram of scan display system provided by the embodiments of the present application；
Fig. 4 is a kind of structural schematic diagram for scanning display module provided by the embodiments of the present application；
Fig. 5 is the schematic diagram that multidirectional fibre optic scanner is arranged on rotating basis provided by the embodiments of the present application；
Fig. 6 is to scan the schematic diagram that multiple fibre optic scanners are arranged in display module same direction；
Fig. 7 is the structural schematic diagram of another scanning display module provided by the embodiments of the present application；
Fig. 8 is the schematic diagram for scanning same direction in display module and multiple fibre optic scanners being arranged；
Fig. 9 is the structural schematic diagram for activating pedestal；
Figure 10 is a kind of schematic diagram of near-eye display device provided by the embodiments of the present application；
Figure 11 is the structural schematic diagram that display module is scanned in Figure 10；
Figure 12 is the light path schematic diagram of near-eye display device.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Convenient for description, part relevant to related invention is illustrated only in attached drawing.
Illustrative scan display system
As shown in Figure 1, for the illustrative scan display system of one of the application, wherein specifically including that
Processor 100, laser group 110, fibre optic scanner 120, optical fiber 130, modulation of source circuit 140, turntable driving
Circuit 150 and combined beam unit 160.
Processor 100 can be graphics processor (Graphics Processing Unit, GPU), central processing unit
(Central Processing Unit, CPU) or other chips or circuit with control function, image processing function, this
In and without specifically limiting.
When system works, processor 100 can control modulation of source circuit 140 to laser according to image data to be shown
Device group 110 is modulated, and is included multiple mono-colour lasers in laser group 110, is issued the light beam of different colours respectively.From Fig. 1
In as it can be seen that red (Red, R), green (Green, G), blue (Blue, B) tri-color laser specifically can be used in laser group.Laser
The light beam that each laser issues in group 110 closes beam via combined beam unit 160 and is beam of laser and is coupled into optical fiber 130.
Processor 100 controls scan drive circuit 150 and fibre optic scanner 120 is driven to be swept, thus by optical fiber 130
The light beam of transmission scans output.
The light beam being emitted from 130 output end of optical fiber acts on a certain pixel position on dielectric surface, and in the pixel
Hot spot is formed on position, just realizes the scanning to the pixel position.Under the drive of fibre optic scanner 120, optical fiber 130 is defeated
Outlet is swept according to certain scanning track, is scanned so that light beam is moved to corresponding pixel position.Actual scanning
In the process, optical fiber 130 export light beam will each pixel position formed have respective image information (such as: color, gray scale or
Brightness) hot spot.In the time of a frame, light beam traverses each pixel position with sufficiently high speed, due to eye-observation
Things has " persistence of vision " that old friend's eye just can not discover movement of the light beam on each pixel position, but see
See the complete image of a frame.
Be the specific structure of fibre optic scanner 120 with continued reference to Fig. 2, including: actuation part 121, optical fiber cantilever 122,
Lens 123, scanner encapsulating shell 124 and fixing piece 125.Actuation part 121 is fixed on scanner encapsulating shell by fixing piece 125
In 124, optical fiber 130 extends to form optical fiber cantilever 122 in the free end of actuation part 121, and when work, actuation part 121 is driven in scanning
It is vibrated under the driving of dynamic signal along first direction (Y-direction) and second direction (X-direction), is actuated the drive of portion 121, optical fiber is outstanding
The light beam of 122 exit end of arm output can be scanned onto a media surface in response by desired trajectory.It should be noted that optical fiber 130 is from A
It terminates into actuation part 121, light beam therein can be transmitted to the optical fiber cantilever 122 at the end B, in possible embodiment, optical fiber 130
Optical fiber cantilever 122 is extended to form through actuation part 121, and in the free end of actuation part 121；Alternatively, optical fiber 130 from A terminate into
Actuation part 121, and docked in 121 inside of actuation part with the precision of the optical fiber cantilever 122 at the end B, so as to export light beam to light
In fine cantilever 122, that is to say, that optical fiber 130 and optical fiber cantilever 122 are not integrated.
In the description of application scheme, actuation part and actuator indicate identical concept, are only title differences, therefore do not answer
It is interpreted as the restriction to the application.
It should be understood that the basic structure of optical fiber scanning display system is shown in earlier figures 1 and Fig. 2, it on this basis will be right
Technical solution in the embodiment of the present application is described in detail.In addition, for the ease of the description in subsequent embodiment, Fig. 1 and Fig. 2
Shown in direction coordinate system can continue to use into subsequent embodiment, for ease of understanding, used in subsequent embodiment such as
Y1And Y2Direction is then believed that and is consistent with Y-direction, certainly, in practical applications, Y1And Y2Direction is not quite identical, and
It is also not fully consistent with Y-direction, here and should not be used as restriction to the application.
It should be noted that being based on above content, the light direction of scan display system goes out light side by fibre optic scanner
To being determined, it is clear that under the fibre optic scanner effect of Fig. 1 and Fig. 2, scan display system only towards a light-emitting directions,
Imaging region corresponding to its scanning light beam exported is limited.
Scan display system
It is that the scanning display of one of the embodiment of the present application is with reference to Fig. 3 based on illustrative scan display system above-mentioned
System, it may include: scanning display module 300, multiple light sources 310, multiple combined beam units 320, multifiber 330, modulation of source electricity
Road 340, scan drive circuit 350 and processor 360.
In the present embodiment, scanning includes multiple fibre optic scanners (and not shown in FIG. 3) in display module 300, thus
Need the input source of respective numbers.
For any light source 310 in multiple light sources, single light emitting source had both been can be used in light source 310, e.g., LED or sharp
The light of rear capable of emitting particular color is set as needed in light device；Multiple sub-light sources being spatially separated, sub-light source can also be used
It equally can be LED or laser, the color of multiple sub-light sources can be the same or different, and will specifically regard the need of practical application
Depending on wanting.In practical Projection Display, different light sources 301 can issue identical image beam, can also issue different
Image beam, here and without concrete restriction.
In the subsequent embodiment of the application, it will focus on and be illustrated with light source 310 for the case where laser, here not
It is interpreted as the restriction to the application.In general embodiment, in any light source 310 include at least RGB tri-color laser, three
Color laser is spatially separated, and issues the laser of three kinds of colors respectively.
Quantity of the quantity of combined beam unit 320 usually with light source 310 matches, and corresponds with light source 310, Mei Yihe
The light beam for two or more colors that corresponding light source 310 exports can be carried out conjunction beam by Shu Danyuan 320, be coupled into optical fiber 330
In, then the beam Propagation of beam will be closed to corresponding fibre optic scanner by optical fiber 330.In the present embodiment, combined beam unit 320 is specific
Conjunction beam mode may include but be not limited to: beam, optical-fiber bundling etc. are closed in space, specifically will be according to practical application using which kind of mode
Depending on needing.
Modulation of source circuit 340 and scan drive circuit 350 can refer to the description in foregoing illustrative scan display system,
Here it is not repeated after more.
Processor 360 can issue control instruction to modulation of source circuit 340 and scan drive circuit 350, so that light source
Modulation circuit 340 is respectively modulated multiple light sources 310, and scan drive circuit 350 is made to control scanning display mould respectively
Multiple fibre optic scanners in group 300 scan output.
Scan display module
With reference to Fig. 4, scanning display module 300 includes: rotating basis 40 and at least two scanner groups, in the present embodiment
In, it include a fibre optic scanner in each scanner group, that is, the first fibre optic scanner 41 and the second fibre optic scanner 42.
It should be understood that may include multiple fibre optic scanners in each scanner group, and in order to facilitate understanding and description, in the present embodiment
Scheme the case where separately including a fibre optic scanner in each scanner group to be illustrated, when practical application, each scanner group
Included in fibre optic scanner particular number by depending on using need depending on, here and be not limited.
Rotating basis 40 is in square-column-shaped, and the central axis that can rotate about top surface (runs through the void of rotating basis 40 in Fig. 4
Line) high speed rotation repeatedly clockwise and counterclockwise is carried out, the thick line annular arrow indicated on central axis in Fig. 4 represents rotation
Pedestal 40 can be rotated counterclockwise, and filament annular arrow represents rotating basis 40 and can be rotated clockwise.
Two fibre optic scanners 41 and 42 are individually fixed on two adjacent surfacess of revolution of rotating basis 40, that is, optical fiber
The exit end of scanner 41 and 42 is exported towards two different directions so as to scan respectively to both direction.With the first light
For fine scanner 41, including actuation part 411, from 411 free end of actuation part extend optical fiber cantilever 412, lens 413,
Scanner encapsulating shell 414 and fixing piece 415.Actuation part 411 and optical fiber cantilever 412 in first fibre optic scanner 41, by solid
Determine part 415 to be fixed in scanner encapsulating shell 414, in the same fixed scanners encapsulating shell 414 of lens 413 and is located at optical fiber cantilever
On 412 emitting light path, the light beam exported from optical fiber cantilever 412 projects corresponding picture after lens.
With continued reference to Fig. 4, the tail end of the first fibre optic scanner 41 be fixed on the surfaces of revolution of rotating basis 40 (particular by
The tail end of scanner encapsulating shell 414 is directly fixed with the rotation face contact of rotating basis 40), in other implementations, also
It can be fixed on by the side wall of scanner encapsulating shell 414 on the top surface of rotating basis 40.Specific fixed form can use one
Body formed, bonding, card slot are fixed etc., using which kind of mode by depending on the needs of practical application, here and without specifically limiting
System.For scanning display module in this present embodiment, the parameter specification for the fibre optic scanner for being included and rotating basis 40
Between fixed form etc. it is consistent, therefore can refer to the explanation to the first fibre optic scanner 41, without to other fibre optic scanners
Excessively repeat.
It should be noted that mode of the fibre optic scanner independently of rotating basis, compared to integrally formed mode, system
It makes difficulty and cost is lower, therefore, usually fibre optic scanner is fixedly installed in rotation base as independent component in practical applications
On seat 40.
In the present embodiment, the centerline axis parallel of rotating basis 40, can band when first direction (that is, Y-direction), work
Dynamic fibre optic scanner 41 and 42 sweep in second direction (for the first fibre optic scanner 41, second direction X1Direction；
For the second fibre optic scanner 42, second direction X2Direction), the process that rotating basis 40 is rotated repeatedly is specific
Are as follows: when work, rotating basis 40 is rotated counterclockwise around center axis thereof, after rotating counterclockwise to certain angle, rotation
Pedestal 40 is changed direction of rotation to be rotated clockwise around center axis thereof, after being clockwise to certain angle, rotates base
Seat 40 changes direction of rotation again to be rotated counterclockwise, and so on, just no longer transition repeats here.
Obviously, in conjunction with the basic structure of aforementioned fibre optic scanner it is found that rotating basis 40 is rotated by itself drives optical fiber
Scanner 41 and 42 is swept in second direction, and that is played functions as the second actuation part of aforementioned fibre optic scanner.It is based on
This, actuation part in fibre optic scanner 41 and 42 can be one-dimensional actuation part, which can drive optical fiber cantilever the
One direction is swept.That is, the actuation part 411 of the first fibre optic scanner 41 can drive optical fiber cantilever 412 to sweep in the Y direction
Dynamic, analogously, the actuation part (not shown in FIG. 4) of the second fibre optic scanner 42 can also drive its optical fiber cantilever (not in Fig. 4
In show) sweep in the Y direction.To under the cooperation of rotating basis 40 and fibre optic scanner 41,42, in the present embodiment
Scanning display module can be realized: grid type scanning, spiral scan or Lisa such as (Lissajous) formula scanning difference
Scanning mode.
In general, rotating basis 40 is repeated in rotary course clockwise and counterclockwise, and the angle of rotation is usual
Depending on the scanning specific scanning mode of display module, such as: (corresponding to sweeping in Fig. 1 and Fig. 2 when using grid type scanning
Retouch track), the angle that rotating basis 40 rotates is regarded as fibre optic scanner 41 and 42 and scans needed for row's pixel position
Angle.Another example is:, as scanning track is with scanning process spirally from inside to outside, rotating base when using spiral scan
Seat 40 is repeated angle that is clockwise and rotating counterclockwise and is also gradually increased.Certainly, it is not construed as here to the application
Limitation.
As mode alternatively possible in the application, rotating basis 40 can continue to be turned clockwise or counterclockwise
It is dynamic, rather than rotate repeatedly.For this mode, rotating basis 40 keeps high-speed rotation (here with rotating basis at work
In case where 40 are rotated clockwise), rotation initial time, fibre optic scanner 41 and 42 direction as shown in figure 4,
Under rotating basis 40 drives, the direction of fibre optic scanner 41 and 42 changes, a certain moment in rotation, the second optical fiber scanning
The position of device 42 is located at the position of the first fibre optic scanner 41 in Fig. 4, and as rotating basis 40 continues to rotate, the first optical fiber is swept
The position of the second fibre optic scanner 42 in Fig. 4, a certain moment later can be gone to by retouching device 41, and rotating basis 40 is completed 360 ° and turned
Dynamic, fibre optic scanner 41 and 42 is returned to position shown in Fig. 4.And so on, rotating basis 40 persistently rotates, scanning display
Mould group persistently scans output.
For the mode that above-mentioned rotating basis 40 persistently rotates, the light extraction mode of the light source in scan display system
To accordingly it change, that is, when the direction of fibre optic scanner 41,42 meets state shown in Fig. 4, the corresponding light beam of light source output
And respectively via fibre optic scanner 41 and 42 export, when the first fibre optic scanner 41 go to other towards when, swept with the first optical fiber
It retouches the light source that device 41 matches and stops light out, until the first fibre optic scanner 41 turns again to shown in Fig. 3 after, with the
The light source that one fibre optic scanner 41 matches continues light out, and similarly, the corresponding light source of the second fibre optic scanner 42 is see also preceding
Content is stated, which is not described herein again.
(the case where still being rotated clockwise with rotating basis 40 be alternatively, in other possible light extraction modes
Example), when the first fibre optic scanner 41 goes to the position of the second picture of direction, light source corresponding with the first fibre optic scanner 41 is defeated
Corresponding image beam out, so that the light beam of the first fibre optic scanner scanning output the second picture of building, analogously, when second
It is corresponding with the corresponding light source output of the second fibre optic scanner 42 to scheme when fibre optic scanner 42 goes to the position of the first picture of direction
As light beam, so that the light beam of the second fibre optic scanner 42 output the first picture of building.That is, each fibre optic scanner is swept jointly
Retouch the light beam that output constructs each picture.
Which kind of light extraction mode is specifically used, the needs of practical application will be also depended on, is not construed as here to this Shen
Limitation please.It, can be by processor in scan display system to modulation of source circuit it is appreciated that different light extraction mode above-mentioned
And scan drive circuit issue control instruction, and further by modulation of source circuit and scan drive circuit control respectively light source,
Fibre optic scanner is cooperated and is realized.Specific control process just no longer excessively repeats here.
It is readily appreciated that from Fig. 4, scanner group can be fixedly installed on four surfacess of revolution of rotating basis 40, to realize
The scanning of four direction exports.It should be noted that in practical applications, different structure, example also can be used in rotating basis 40
Such as, as shown in figure 5, then cylindrical structure can be used in rotating basis 40 to realize that multi-direction (being greater than 4 directions) scanning exports,
So, the scanner group in multiple and different directions can be fixedly installed on the surfaces of revolution of rotating basis 40, different scanning device can
To form corresponding picture (being indicated by the black lines of all directions in Fig. 5) in different directions scanning output.Analogously, it rotates
Pedestal 40 can also use such as multi-panel rod structure, certainly, here and without concrete restriction.
In Fig. 4, the first picture and the second picture be considered as each other two be separated from each other and independent picture, that is,
It says, between the two pictures and without tiled display, the content of picture can be the same or different.Certainly, it is actually answering
In, the first picture and the second picture can also mutually splice (that is, fitting closely together between two pictures), collectively constitute
One larger sized picture.Specifically by depending on actual needs, here and it is not limited.
In another embodiment, the fibre optic scanner of multiple identical directions can be set in every scanner group, refer to
Fig. 6, rotating basis 40 use square column structure, share two groups of scanner groups, be fixedly installed on two phases of rotating basis 40 respectively
It all include four fibre optic scanners in each group of scanner group on the adjacent surfaces of revolution, two groups of scanner groups can scan output shape respectively
At the first picture and the second picture.It is readily appreciated that, using such embodiment, the first picture or the second picture are respectively by accordingly sweeping
Four in device group fibre optic scanners are retouched to be scanned splicing and constitute (that is, with each optical fiber scanning in scanner group
Device forms different sprites for scanning output, to be spliced to form a width complete picture).Obviously, when same scanner group
When the multiple fibre optic scanners of middle setting, total projection range in this direction can be considered the drop shadow spread of multiple fibre optic scanners
The sum of, the area size of displayed image can be effectively increased.
Other embodiments
In other embodiments in this application, the pedestal scanned in display module does not rotate, but as each light
The common actuation structure of fine scanner.Specifically, with reference to Fig. 7, scanning display module 700 includes: actuating pedestal 710, the first light
Fine scanner 720 and the second fibre optic scanner 730.
Activating pedestal 710 can be along Y-direction (that is, first direction) with the frequency stretching motion of setting.First fibre optic scanner
720 and second fibre optic scanner 730 be fixedly installed on the same surface of actuating 710 telescopic direction of pedestal, and the first optical fiber
Scanner 720 and the second fibre optic scanner 730 are respectively facing different directions.
First fibre optic scanner 720 and the second fibre optic scanner 730 are one-dimensional scanning device, that is, the first optical fiber scanning
Device 720 is only in X1Side is swung up, and the second fibre optic scanner 730 is only in X2Side is swung up.In actual work, pedestal is activated
710 can drive the first fibre optic scanner 720 and the second fibre optic scanner 730 to vibrate in the Y direction simultaneously, thus, the first optical fiber
Scanner 720 and the second fibre optic scanner 730 can realize that two-dimensional scanning exports.
Similar with previous embodiment, the specific structure for closing fibre optic scanner in this present embodiment can refer to foregoing teachings,
Here it does not just repeat excessively.
Certainly, in practical applications, multi-panel column, cylinder etc. equally can also be used in actuating pedestal 710, and can be set multiple
Fibre optic scanner, specifically will according to the needs of practical application depending on.
In addition, activating pedestal 710 with reference to Fig. 8 in unidirectional scanner group, multiple optical fiber scannings also can be set
740, multiple fibre optic scanner common scans in same direction are spliced to form corresponding projected image, specifically no longer excessive superfluous
It states.
It should be noted that in order to realize the stretching vibration of actuating pedestal 710 in the Y direction, as in the present embodiment
Motor actuating can be used in a kind of feasible pattern, common actuation portion 710, and in other words, common actuation portion 710 is motor, can be in the Y direction
On vibrated according to setpoint frequency；Alternatively, common actuation portion 710 is the objective table on motor driven bar, in motor driven bar
Drive under move.Certainly, here and it should not be used as restriction to the application.
As another feasible pattern in the present embodiment, activating pedestal 710 specifically can be used motor actuating, that is, causing
Moving base 710 is mounted in the drive shaft of electrode, makes to activate pedestal 710 and stretch in the Y direction in motor work to shake
It is dynamic, alternatively, actuating pedestal 710 itself is motor, it is fixedly installed in corresponding fixed structure (such as: firm banking, fixed station
Deng) on, when work, actuating pedestal 710 actively carries out the stretching vibration in Y-direction.It specifically will be according to reality using which kind of mode
Depending on the needs of application, here and it is not limited.
As another feasible pattern in the present embodiment, activating pedestal 710 can be used stacked structures, with reference to Fig. 9, cause
It include the multiple patch of piezoelectric material 701 being stacked with along telescopic direction, the two sides of each patch of piezoelectric material 701 in moving base 710
It is laid with electrode 702 respectively.In practical application, the electrode of the different patch of piezoelectric material 701 stacked can be with mutually insulated, specifically
It can be realized by such as insulating film layer, here and be not specifically limited.The electrode that each 701 two sides of patch of piezoelectric material is laid
702 specifically include first electrode 7021 and second electrode 7022, and generally, first electrode 7021 and second electrode 7022 exist
There are potential differences between after energization.
In the present embodiment, patch of piezoelectric material 701 first passes through polarization process in advance, so that the polarization side of patch of piezoelectric material 701
It is consistent (here to polarization process process without excessively repeating) to generated direction of an electric field when being powered with electrode 702, as a result,
Along the direction (that is, first direction) perpendicular to electrode 702 telescopic deformation is occurred for patch of piezoelectric material 701 by electric field action.It is easy reason
Solution, the deformation mode of patch of piezoelectric material 701 is related with the direction of electric field, and in a kind of possible mode, first electrode 7021 is made
When for positive electrode, second electrode 7022 as negative electrode, patch of piezoelectric material 701 extends deformation along Y-direction；And first electrode
When 7021 conduct negative electrodes, second electrode 7022 are as positive electrode, patch of piezoelectric material 701 shrinks deformation along Y-direction.Certainly, this
In be only a kind of example, be not construed as the restriction to the application.
Certainly, the deformation amplitude of patch of piezoelectric material 701 is related with the voltage of application, can specifically meet following formula:
Δ l=d33*U
Wherein, Δ l is the retractable variability of patch of piezoelectric material 701；d33Direction of an electric field is being parallel to for patch of piezoelectric material 701
Piezoelectric modulus in (that is, Y-direction)；U is driving voltage.
Obviously, the voltage of application is higher, and retractable variability caused by patch of piezoelectric material 701 is also bigger, still, driving
The increase of voltage will lead to the increase of the complexity, cost and power consumption of respective drive circuit, meanwhile, biggish driving voltage makes
The response of fibre optic scanner has strongly non-linear.So in practical applications by the voltage control of application certain reasonable
Within the scope of, it specifically will be depending on actual conditions.
For activating pedestal 710, total retractable variable be regarded as each patch of piezoelectric material 701 retractable variable it
With.Each patch of piezoelectric material 701 for activating stack in pedestal 710 occurs under the action of driving signal perpendicular to electrode
The deformation in direction can make actuating pedestal 710 to carry out stretching vibration in the Y direction.It is readily appreciated that, activates and wrapped in pedestal 710
The quantity of the patch of piezoelectric material 701 contained is more, and the whole telescopic deformation of actuating pedestal 710 is also just more obvious, and correspondingly, activates base
The stretching vibration amplitude of seat 710 is also bigger, and certainly, the quantity for activating the patch of piezoelectric material 701 for including in pedestal 710 can basis
The needs of practical application are adjusted setting.
Actuating pedestal 710 in the present embodiment and without bending vibration, but stretching vibration is carried out in the Y direction, it compares
Bigger in the driving force of bending vibration, stretching vibration, amplitude is also bigger, is needing big actuating power and/or large scale scanning display
Scene under, more advantage.
In another embodiment, rotation or stretching motion can not be carried out by scanning the pedestal in display module, but
Play the role of supporting fixed fibre optic scanner, in this embodiment, fibre optic scanner is two-dimensional scanner, can be in two-dimensional square
It is exported to scanning, specifically refers to the content in foregoing illustrative scan display system, just no longer excessively repeat here.
For the scanning display module in the application foregoing embodiments, the size of pedestal is shown in the figure to be greater than light
The diameter of fine scanner, and in certain actual scenes, pedestal can realize that Miniaturization Design (is arranged especially for a direction
The structure of one fibre optic scanner), that is to say, that the size of the contact surface of pedestal and fibre optic scanner can be with fibre optic scanner
Diameter is close or consistent, so that the appearance of scanning display module seems " integrated molding ".Certainly, the specific size of pedestal is by root
Depending on the needs of practical application.
Near-eye display device
Explanation based on aforementioned scanning display module provides a kind of near-eye display device in this application.With reference to Figure 10~
Figure 12 includes: to wear component, light source module group, scanning display module 820, guide-lighting mould group and control unit in near-eye display device,
Wherein, light source module group and control unit are not shown in the figure.
Wearing component further may include temple 801, frame 802 and bridge of the nose 808 etc., as it can be seen that head from Figure 10 and Figure 11
The form that component uses glasses is worn, and each component therein can be an integral molding structure.Here, it will be appreciated that institute in Figure 10, Figure 12
What is shown is only a kind of possible embodiment, and in practical applications, the component some or all of worn in component can also lead to
Corresponding mechanical structure is crossed to link together, rather than it is integrally formed, such as: hinge can be passed through between temple 801 and frame 802
The mode connect connects, and temple 801 is folded relative to frame 802.
With reference to Figure 11, scanning display module 820 further comprises pedestal 821, third fibre optic scanner 822 and the 4th light
Fine scanner 823.Pedestal 821 is in square column type, and two fibre optic scanners 822 and 823 are respectively fixedly connected in 821 two phases of pedestal
Pair side wall on, and the direction of two output ends of fibre optic scanner 822 and 823 is opposite.
In the present embodiment, pedestal 821 is specially rotating basis, and the content about rotating basis can refer to previous embodiment
In content, just no longer excessively repeat here.Certainly, in practical applications, pedestal 821 equally may be actuating pedestal or be
Fixed pedestal, specifically will according to the needs of practical application depending on, here and be not limited.
With reference to Figure 10 and Figure 12, the inside that display module 820 can be set to the bridge of the nose 808 is scanned, and is scanned in display module 820
Two output ends of fibre optic scanner 822 and 823 be respectively facing the frame 802 corresponding to right and left eyes.
Light source module group further may include two laser groups, two combined beam units and two transmission fiber (light source module groups
The element for specifically including is not shown in Figure 11~12, be can refer to the structure in Fig. 1 and Fig. 2, is not just repeated excessively here),
To be matched with two fibre optic scanners in scanning display module 820.It should be noted that the laser in light source module group
Group, combined beam unit can be respectively arranged in two temples 801, and pass through transmission fiber therein and scanning display module respectively
Different fibre optic scanners connection in 820.And as alternatively possible embodiment, the element in light source module group be may also set up
In in the bridge of the nose 808.
In fact, control unit also can be set in temple 801 or the bridge of the nose 808, just do not repeat specifically here.
With reference to Figure 12, for ease of description, the guide-lighting mould group 830 for corresponding to left eye or right eye can be known as one group of leaded light mould
Group.Two groups of leaded light mould groups are symmetrical arranged, and any group of leaded light mould group further comprise leaded light device 831, be coupled into unit
832, the first expanding element 833 and the second expanding element 834.
The concretely prism of leaded light device 831 can change the light of the light beam of the scanning output of fibre optic scanner 822 and 823
Road.It is coupled into unit 832 to be set on the emitting light path of leaded light device 831, and for being coupled into light beam to the first expanding element 833
In.First expanding element 833 can extend in the horizontal direction light beam, and the light beam by extension is input to the second expanding element again
In 834, exported after realizing extension in vertical direction.
It should be noted that the near-eye display device in the application can be used as augmented reality (AR) or virtual reality (VR) is set
Standby, in practical applications, the shape for wearing component is without being limited thereto, it is also possible to using the shape of pullover type VR glasses, herein not
It is interpreted as the restriction to the application.
Various embodiments are described in a progressive manner in the application, same and similar part between each embodiment
It may refer to each other, each embodiment focuses on the differences from other embodiments.Especially for device, set
For standby and medium class embodiment, since it is substantially similar to the method embodiment, so being described relatively simple, related place ginseng
The part explanation for seeing embodiment of the method, just no longer repeats one by one here.
So far, the specific embodiment of this theme is described.Other embodiments are in the appended claims
In range.In some cases, the movement recorded in detail in the claims can execute and still in a different order
Desired result may be implemented.In addition, process depicted in the drawing not necessarily requires the particular order shown or continuous suitable
Sequence, to realize desired result.In some embodiments, multitasking and parallel processing can be advantageous.
Statement " first ", " second " used in various embodiments of the present disclosure, " first " or " described the
Two " can modify various parts and unrelated with sequence and/or importance, but these statements do not limit corresponding component.The above statement
It is only configured to the purpose for distinguishing element and other elements.For example, the first user equipment and second user equipment indicate different
User equipment, although being both user equipment.For example, first element can under the premise of without departing substantially from the scope of the present disclosure
Referred to as second element, similarly, second element can be referred to as first element.
When an element (for example, first element) referred to as " (operationally or can with another element (for example, second element)
Communicatedly) connection " or " (operationally or communicably) being attached to " another element (for example, second element) or " being connected to " are another
When one element (for example, second element), it is thus understood that an element is connected directly to another element or an element
Another element is indirectly connected to via another element (for example, third element).On the contrary, it is appreciated that when element (for example,
First element) it referred to as " is directly connected to " or when " directly connection " to another element (second element), then without element (for example, the
Three elements) it is inserted between the two.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from foregoing invention design, it is carried out by above-mentioned technical characteristic or its equivalent feature
Any combination and the other technical solutions formed.Such as features described above has similar function with (but being not limited to) disclosed herein
Can technical characteristic replaced mutually and the technical solution that is formed.
Claims (10)
1. a kind of scanning display module, which is characterized in that including pedestal and at least two scanner groups, wherein
It include at least one fibre optic scanner in each scanner group, and the different scanner groups are respectively facing not Tongfang
To being fixed on the pedestal, when work, the scanning display module scanning output forms the picture of at least two different directions,
One picture is obtained by the scanner group scanning output.
2. scanning display module as described in claim 1, which is characterized in that the pedestal is rotating basis, the rotation base
Seat rotates about the center axis thereof of top surface, and the fibre optic scanner in the different scanner groups is with fixing end towards institute
State central axis, output end is directed away from the mode of central axial direction and is fixed on the rotating basis.
3. scanning display module as claimed in claim 2, which is characterized in that the rotation mode of the rotating basis are as follows: around institute
Central axis is stated respectively to be rotated repeatedly clockwise and counterclockwise；
Wherein, the angle automatching that the rotating basis rotates repeatedly is in the height or width of the picture of required display.
4. scanning display module as claimed in claim 2, which is characterized in that the rotation mode of the rotating basis are as follows: around institute
Central axis is stated to continue to rotate in clockwise and counterclockwise directions.
5. scanning display module as claimed in claim 2, which is characterized in that the optical fiber scanning in each scanner group
Device is one-dimensional scanning device, wherein at least includes scanner encapsulating shell and the fixed part being set in the scanner encapsulating shell, one
It ties up actuation part, the optical fiber cantilever extended to form from the one-dimensional actuation part distal end and is set on the optical fiber cantilever emitting light path
Lens；
The one-dimensional actuation part of the fibre optic scanner is vibrated along one-dimensional square, is driven by the rotating basis and one-dimensional actuation part,
The optical fiber cantilever is swept according to the scanning track of setting；
Wherein, rotational plane of the direction of vibration of the one-dimensional actuation part perpendicular to the rotating basis.
6. scanning display module as described in claim 1, which is characterized in that the pedestal is actuating pedestal, the actuating base
Common actuation portion of the seat as each fibre optic scanner, in a first direction stretching vibration.
7. scanning display module as claimed in claim 6, which is characterized in that the optical fiber scanning in each scanner group
Device is one-dimensional scanning device, wherein at least includes scanner encapsulating shell and the fixed part being set in the scanner encapsulating shell, one
It ties up actuation part, the optical fiber cantilever extended to form from the one-dimensional actuation part distal end and is set on the optical fiber cantilever emitting light path
Lens；
The one-dimensional actuation part of the fibre optic scanner is vibrated in a second direction, is driven by the actuating pedestal and one-dimensional actuation part,
The optical fiber cantilever is swept according to the scanning track of setting；The first direction and the second direction are not parallel to each other.
8. scanning display module as described in claim 1, which is characterized in that the pedestal is fixed pedestal, each scanning
The fibre optic scanner in device group is two-dimensional scanner, wherein at least includes scanner encapsulating shell and is set to the scanner
The first actuation part, the second actuation part, fixing piece in encapsulating shell, the optical fiber cantilever extended to form from the second actuation part distal end
And the lens on the optical fiber cantilever emitting light path；
First actuation part is vibrated in a first direction, and second actuation part is vibrated in a second direction, by described first
Actuation part and second actuation part drive, and the optical fiber cantilever is swept along the scanning track of setting, the first direction and institute
Second direction is stated to be not parallel to each other.
9. the scanning display module as described in claim 2,6 or 8, which is characterized in that the optical fiber in each scanner group is swept
It includes: at least one of bonding, buckle structure, integrated molding that device, which is retouched, with the fixed form of the pedestal.
10. a kind of near-eye display device, which is characterized in that included at least in the near-eye display device: wearing component, light source die
Any scanning display module in group, guide-lighting mould group, control unit and preceding claims 1 to 9, wherein
The component of wearing includes temple, frame and the bridge of the nose, to fix for wearing the near-eye display device；
The scanning display module is set in the bridge of the nose, and the scanning display module includes pedestal and two output ends towards on the contrary
Fibre optic scanner；
The leaded light mould group is symmetrically disposed on the scanning display module two sides and difference centered on the scanning display module
Corresponding to right and left eyes, leaded light mould group described in either side includes light element, is coupled into unit, the first expanding element and the second extension list
Member；
Under described control unit effect, the light source module group, which is generated, is input to the scanning display for the image beam of imaging
Mould group, the scanning display module to two opposite direction scanning output described image light beams, scan the figure of output respectively
As light beam be input to by the light element described in be coupled into unit, and via first expanding element and second extension
After unit extensions, output to human eye.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210257110.0A CN114488539A (en) | 2019-04-30 | 2019-04-30 | Scanning display module and near-to-eye display equipment |
| CN201910364343.9A CN110376736A (en) | 2019-04-30 | 2019-04-30 | A kind of scanning display module and near-eye display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910364343.9A CN110376736A (en) | 2019-04-30 | 2019-04-30 | A kind of scanning display module and near-eye display device |
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| CN201910364343.9A Pending CN110376736A (en) | 2019-04-30 | 2019-04-30 | A kind of scanning display module and near-eye display device |
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Cited By (1)
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|---|---|---|---|---|
| CN112505917A (en) * | 2020-12-09 | 2021-03-16 | Oppo广东移动通信有限公司 | Image display device and near-to-eye display equipment |
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Application publication date: 20191025 |