CN105911699A - Near-to-eye display system, virtual-reality equipment and augmented reality equipment - Google Patents
Near-to-eye display system, virtual-reality equipment and augmented reality equipment Download PDFInfo
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- CN105911699A CN105911699A CN201610522370.0A CN201610522370A CN105911699A CN 105911699 A CN105911699 A CN 105911699A CN 201610522370 A CN201610522370 A CN 201610522370A CN 105911699 A CN105911699 A CN 105911699A
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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
- G02B27/0101—Head-up displays characterised by optical features
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Abstract
The invention discloses a near-to-eye display system, virtual-reality equipment and augmented reality equipment. The near-to-eye display system comprises a laser light source, a micromirror array and a display panel, wherein the display panel comprises a slab waveguide and a light convergence device; a light beam emitted from the laser light source passes through the micromirror array and is expanded into a plurality of light beams; the plurality of light beams are reflected to the light convergence device through the slab waveguide, and are further converged to eyes through the light convergence device. By adopting the near-to-eye display system, the virtual-reality equipment and the augmented reality equipment disclosed by the invention, the on-off frequency of an optical switch can be effectively reduced, and the energy utilization rate can be effectively increased.
Description
Technical field
The present invention relates to technical field of computer vision, particularly relate to a kind of near-eye display system, virtual reality
Equipment and augmented reality equipment.
Background technology
Along with developing rapidly of computer vision technique so that augmented reality and virtual reality technology also with
Develop rapidly.Augmented reality is typically based on and images the actual physical ring that first-class image capture device obtains
Border image, by computer system discriminatory analysis and query and search, by exist therewith association content of text,
The virtual image of the virtual generation such as picture material or iconic model shows in actual physical situation image, thus
The related expanding letters such as the mark of real-world object, the explanation allowing users to obtain in the real physical environment being in
Breath, or experience the enhancing visual effect three-dimensional, that highlight of real-world object in reality physical environment.
And virtual reality technology is a kind of can establishment and the computer simulation system in the experiencing virtual world, it utilizes meter
Calculation machine generates a kind of simulated environment, and this simulated environment can pass through the feedback sides such as vision, audition, sense of touch simultaneously
Formula so that user is immersed in the virtual world that simulated environment shows.
Existing augmented reality and virtual reality technology, when using optical fiber display virtual image, all make
Show with scanning fiber array, and a pixel in display of each moment virtual image, example
As a example by the monochrome image to show a width 800*600, the refresh rate of human eye takes minimum requirements 20Hz, for
Make human eye it can be seen that the virtual image of display, then control scanning fiber array scans optical fiber open and
The switching frequency of the photoswitch disconnected is minimumThe rate of scanning of scanning optical fiber is
Low it isIf RGB color image need to be shown, when need to use due to display coloured image
The method of sequence, therefore the switching frequency of the photoswitch needed is minimumScanning optical fiber
Rate of scanning minimumNo matter show monochrome image or coloured image, required
The switching frequency of the photoswitch wanted is too high, and in the unit interval, the energy of the highest waste of switching frequency is the most,
It follows that the switching frequency that there is photoswitch in prior art is too high, cause the problem that capacity usage ratio is low.
Summary of the invention
The present invention provides a kind of near-eye display system, virtual reality device and augmented reality equipment, it is possible to effectively
Reduce the switching frequency of photoswitch, and capacity usage ratio can be effectively improved.
The embodiment of the present application first aspect provides a kind of near-eye display system, including LASER Light Source, micro mirror battle array
Row and display floater, described display floater includes planar waveguide and convergence of rays device；
The light beam that described LASER Light Source sends is extended to multiple light beam after described micro mirror array, described many
Individual light beam is reflexed to described convergence of rays device by described planar waveguide, then is assembled by described convergence of rays device
To human eye.
Optionally, described LASER Light Source include trichroism LASER Light Source, collimating mirror group, bundling device, bonder and
Coupling optical fiber, wherein, described trichroism LASER Light Source exports trichroism laser；Described collimating mirror group is arranged at described
On the emitting light path of trichroism LASER Light Source, for described trichroism laser is carried out collimation process；Described bundling device
It is arranged on the emitting light path of described collimating mirror group, restraints for carrying out the laser of described collimating mirror group outgoing closing
Process；Described bonder is arranged on the emitting light path of described bundling device, for by described bundling device outgoing
Laser coupled is in described coupling optical fiber；Described coupling optical fiber is connected with described bonder, described coupling optical fiber
For being transferred through the laser of described bonder.
Optionally, described micro mirror array is specially MEMS micromirror array or dmd array.
Optionally, described convergence of rays device is arranged at the close human eye side of described planar waveguide.
Optionally, described convergence of rays device is specially the first selfoc lens array or automatically controlled liquid microlens
Array or electro-optic deflector array.
Optionally, when described convergence of rays device is specially the first selfoc lens array, described nearly eye shows
Show that system also includes that the second selfoc lens array, described second selfoc lens array are arranged at described flat board
Waveguide away from human eye side.
Optionally, described second selfoc lens array and described first selfoc lens array form 1:1's
Telescopic system.
Optionally, described near-eye display system also includes that light modulation structure, described light modulation structure are arranged at described putting down
Board waveguide away from human eye side.
Optionally, described light modulation structure specially PDLC and the light for controlling described PDLC power on/off are opened
Close.
The embodiment of the present application second aspect provides a kind of virtual reality device, is situated between including two sets such as first aspect
The near-eye display system continued, wherein the first near-eye display system is corresponding with the left eye of people, and the second nearly eye display is
Unite corresponding with the right eye of people.
The embodiment of the present application third aspect provides a kind of augmented reality equipment, is situated between including two sets such as first aspect
The near-eye display system continued, wherein the first near-eye display system is corresponding with the left eye of people, and the second nearly eye display is
Unite corresponding with the right eye of people；External environmental light is by the second GRIN Lens of described first near-eye display system
Array or light modulation structure enter the left eye of people, and the second self-focusing by described second near-eye display system is saturating
Lens array or light modulation structure enter the right eye of people.
Beneficial effects of the present invention is as follows:
Based on technique scheme, the light beam that in the embodiment of the present invention, LASER Light Source sends is after micro mirror array
Being extended to multiple light beam, the plurality of light beam is reflexed to described convergence of rays device by described planar waveguide,
Converged to human eye by described convergence of rays device again so that each moment by multiple beam convergences to human eye, and
Each light beam shows a pixel, so, can show multiple pixels in each moment, and existing skill
Art each moment is only capable of displaying a pixel, owing to the pixel of image is constant, and in each moment
During the increasing number of pixel of display, the switching frequency of the mechanical switch that micro mirror array is corresponding will necessarily be less than
The switching frequency of photoswitch, so, it is possible effectively to reduce the switching frequency of switch, and within the unit interval
In the case of switching frequency reduces, its capacity usage ratio also can improve therewith.
Accompanying drawing explanation
Fig. 1 is the first structural representation of near-eye display system in the embodiment of the present invention；
Fig. 2 is the beam Propagation schematic diagram of near-eye display system in the embodiment of the present invention；
Fig. 3 is the structural representation of LASER Light Source in the embodiment of the present invention；
Fig. 4 is the structure chart that in the embodiment of the present invention, near-eye display system comprises selfoc lens array；
Fig. 5 is the schematic diagram of selfoc lens array convergent beam in the embodiment of the present invention；
Fig. 6 is the structure chart that in the embodiment of the present invention, near-eye display system comprises electro-optic deflector array；
Fig. 7 is the schematic diagram of electro-optic deflector array convergent beam in the embodiment of the present invention；
Fig. 8 is the structure chart that in the embodiment of the present invention, near-eye display system comprises automatically controlled liquid microlens array；
Fig. 9 is the first structure chart of holographical wave guide in the embodiment of the present invention；
Figure 10 is the second structure chart of holographical wave guide in the embodiment of the present invention；
Figure 11 is the structure chart of grating waveguide in the embodiment of the present invention；
Figure 12 is the second structural representation of near-eye display system in the embodiment of the present invention.
The relevant labelling of accompanying drawing is as follows:
1 light source output unit, 10 LASER Light Sources, 101 red laser light sources, 102
Green laser light source, 103 blue laser light source, 104 collimating mirror groups, 1041 collimating mirror groups,
1042 collimating mirror groups, 1043 collimating mirror groups, 105 bundling devices, 1051 dichroic mirrors,
1052 dichroic mirrors, 1053 dichroic mirrors, 106 bonders, 107 coupling optical fiber,
11 micro mirror arrays, 2 display floaters, 20 planar waveguides, 21 convergence of rays devices,
22 first selfoc lens array, 23 second selfoc lens array, 24 electro-optical deflections
Device array, 25 power supplys, 26 automatically controlled liquid microlens arrays, 30 collimating mirrors, 40 adjust
Photo structure, 41 light modulation structures, 50 controllers.
Detailed description of the invention
The present invention provides a kind of near-eye display system, virtual reality device and augmented reality equipment, it is possible to effectively
Reduce the switching frequency of photoswitch, and capacity usage ratio can be effectively improved.
Below in conjunction with the accompanying drawings the preferred embodiment of the present invention is described in detail.
Embodiment one:
As depicted in figs. 1 and 2, embodiment of the present invention first aspect provides a kind of near-eye display system, bag
Including light source output unit 1 and display floater 2, wherein, light source output unit 1 includes LASER Light Source 10 and micro-
Lens array 11, display floater 2 includes planar waveguide 20 and convergence of rays device 21；
The light beam that LASER Light Source 10 sends is extended to multiple light beam after micro mirror array 11, the plurality of
Light beam is reflexed to convergence of rays device 21 by planar waveguide 20, then is converged to human eye by convergence of rays device 21.
Wherein, micro mirror array 11 is arranged on the emitting light path of LASER Light Source 10, for by LASER Light Source 10
The beam spread sent is multiple light beam；Planar waveguide 20 is arranged on the emitting light path of micro mirror array 11,
For receiving the light beam of micro mirror array 11 transmitting and reflecting；Optical fiber convergence apparatus 21 is arranged on flat board ripple
Lead on the emitting light path of 20, for receiving the light beam of planar waveguide 20 outgoing, and planar waveguide 20 is gone out
The beam convergence penetrated is to human eye.
Concrete, LASER Light Source 10 can be monochromatic laser light source or Multi Colour Lasers light source, is swashing for monochromatic
During light pipe light source, it is used for showing monochrome image；When for Multi Colour Lasers light source, be used for showing monochrome image and
Multicolor image；Further, LASER Light Source 10 be specifically as follows trichroism LASER Light Source, for example, RGB swash
Radiants etc., in detail below as a example by trichroism LASER Light Source.
Concrete, as in figure 2 it is shown, LASER Light Source 10 also includes that collimating mirror 30, collimating mirror 30 are arranged on sharp
On the emitting light path of radiant 10, carry out collimation process for the laser that LASER Light Source 10 is sent；Micro mirror
Array 11 is arranged on the emitting light path of collimating mirror 30, for the collimated beam of collimating mirror 30 outgoing being expanded
Exhibition is for multiple light beams, and the multiple light beams after extension are reflexed to planar waveguide 20, the plurality of light beam again by
Planar waveguide 20 reflexes to convergence of rays device 21, is finally converged to human eye by convergence of rays device 21.
Concrete, seeing Fig. 3, LASER Light Source 10 includes red laser light source 101, green laser light source 102
With blue laser light source 103, wherein, red laser light source 101 is for transmitting red laser beam, green laser
Light source is used for transmitting green laser, and blue laser light source 103 is used for launching blue laser.
With continued reference to Fig. 3, LASER Light Source 10 also includes collimating mirror group 104, bundling device 105, bonder 106
With coupling optical fiber 107, collimating mirror group 104 is arranged on the emitting light path of LASER Light Source 10, for laser
The laser that light source 10 is launched carries out collimation process, and wherein, collimating mirror group 104 includes collimating mirror 1041, standard
Straight mirror 1042 and collimating mirror 1043, collimating mirror 1041 is arranged on the emitting light path of red laser light source 101,
For red laser is carried out collimation process；Collimating mirror 1042 is arranged at the outgoing of green laser light source 102
In light path, for green laser is carried out collimation process；Collimating mirror 1043 is arranged at blue laser light source 103
Emitting light path on, for blue laser is carried out collimation process.Certainly, LASER Light Source 10 can also is that
By red laser light source 101, green laser light source 102, blue laser light source 103, bundling device 105, coupling
Clutch 106 and coupling optical fiber 107 form, and do not comprise collimating mirror group 104, wherein, couple optical fiber 107
It can be lens fibers optical fiber such as silicon dioxide optical fibers.
With continued reference to Fig. 3, bundling device 105 is arranged on the emitting light path of collimating mirror group 104, for by standard
The laser of straight mirror group 104 outgoing carries out closing bundle and processes, wherein, bundling device 105 include dichroic mirror 1051,
Dichroic mirror 1052 and dichroic mirror 1053, wherein, dichroic mirror 1051 reflects HONGGUANG and transmission green glow,
Dichroic mirror 1052 transmission green glow, dichroic mirror 1053 transmission red-green glow and reflection blue light, thus will collimation
The Laser synthesizing that mirror group 104 sends is a light path, just repeats no more at this.
With continued reference to Fig. 3, bonder 106 is arranged on the emitting light path of bundling device 106, for conjunction being restrainted
The laser coupled of device 105 outgoing is to coupling in optical fiber 107；Coupling optical fiber 107 is connected with bonder 106,
Coupling optical fiber 107 is for being transferred through the laser of bonder 106, and wherein, collimating mirror 30 is arranged on coupling
On the emitting light path of optical fiber 107.
In the embodiment of the present application, micro mirror array 11 specially MEMS micromirror array or dmd array, wherein,
The display resolution of described near-eye display system is determined by the resolution of micro mirror array 11, when micro mirror array 11
Resolution bigger time, the display resolution of described near-eye display system is the biggest；Otherwise, work as micro mirror array
When the resolution of 11 is less, the display resolution of described near-eye display system is the least；Such as work as micro mirror array
When the resolution of 11 is 1920x1080, the display resolution of the most described near-eye display system is to the maximum
1920x1080；When the resolution of micro mirror array 11 is 1440x900, the most described near-eye display system
Display resolution is 1440x900 to the maximum.
In the embodiment of the present application, convergence of rays device 21 is arranged at the close human eye side of planar waveguide 20,
Wherein, convergence of rays device 21 is specifically as follows the first selfoc lens array or automatically controlled liquid microlens battle array
Row or electro-optic deflector array.
When convergence of rays device 21 is the first selfoc lens array, as shown in Figure 4, display floater 2
Including planar waveguide 20 and the first selfoc lens array 22, the first selfoc lens array 22 is arranged at flat
The close human eye side of board waveguide 20, for deflecting the light beam that planar waveguide 20 reflects so that it is
Converging to human eye, its beam Propagation process is concrete as shown in Figure 5.
In the embodiment of the present application, the GRIN Lens in the first selfoc lens array 22 can be closely to arrange
Cloth, described tight arrangement is that the interval between the most adjacent two GRIN Lens is not more than predeterminable range, wherein,
Described predeterminable range sets according to practical situation, and described predeterminable range can be not less than 25 microns (um)
Value, for example, 25um, 30um and 35um etc.；And the sidewall of each GRIN Lens is coated with extinction
Layer, described light-absorption layer comprises light absorbent, absorbs scattered light by described light-absorption layer, avoids certainly with this
Condenser lens transmission light beam interfere, so, it is possible to be effectively improved display effect, wherein, described from
The cross section of condenser lens can be circular, it is also possible to is rectangle.
With continued reference to Fig. 4, described near-eye display system also includes the second selfoc lens array 23, and second certainly
Focusing lens array 23 be arranged at planar waveguide 20 away from human eye side, and the first selfoc lens array
22 and second selfoc lens array 23 form the telescopic system of 1:1 so that external environmental light passes through 1:1
Telescopic system enter human eye, and owing to external environment just enters human eye by the telescopic system of 1:1,
Will not zoom in or out to external world so that user can experience external environment more really.
When convergence of rays device 21 is electro-optic deflector array, as shown in Figure 6, display floater 2 includes
Planar waveguide 20 and electro-optic deflector array 24, electro-optic deflector array 24 is arranged at planar waveguide 20
Near human eye side, for the light beam that planar waveguide 20 reflects is deflected so that it is converge to human eye.
Seeing Fig. 7, electro-optic deflector array 24 includes multiple electro-optic deflector, by power supply 25 to each electricity
Light deflector applies voltage, is carried out the deflection of different angles by the plurality of light beam of Control of Voltage applied,
So so that the plurality of beam convergence after deflection is to human eye.
The embodiment of the present application provides the near-eye display system using electro-optic deflector array 24 as augmented reality
During display, so that the effect of display is more preferable, at planar waveguide 20, light modulation is set away from human eye side
Structure 40, light modulation structure 40 specially PDLC (Polymer Dispersed Liquid Crystal,
It is called for short: PDLC) film layer and for controlling the photoswitch of described pdlc film layer power on/off；Use at times
Display virtual image and reality external environment；If the refresh rate of human eye is 30Hz, by time corresponding for this refresh rate
Between section be divided into 2 sections, a period of time is used for showing virtual image, makes the light of pdlc film layer open in this period
Close and disconnect so that pdlc film layer is opaque state；Another a period of time is used for observing reality external environment,
The photoswitch making pdlc film layer in this period is open-minded, thus pdlc film layer is applied voltage so that it is in thoroughly
Bright state so that external environmental light can pass through pdlc film layer, planar waveguide 20 and electro-optic deflector array
Human eye can be entered, it is achieved observe reality external environment after 24；And the embodiment of the present application provides and makes electricity consumption
The near-eye display system of light deflector array 24, when showing as virtual reality, can arrange light modulation
Structure 40.
Wherein, described pdlc film layer without applied voltage when, the direction of optic axis of its liquid crystal particle with
Machine, in disordered state, incident ray is strongly absorbed, and described pdlc film layer is opaque state；Apply
External voltage, the optical axis of the liquid crystal particle of described pdlc film layer is perpendicular to film surface arrangement, with electric field side
To unanimously, without sharp interface, constituting a substantially homogeneous medium, incident illumination will not scatter, described
The transparent shape of pdlc film layer, so so that external environmental light can pass described pdlc film layer.
It is, of course, also possible to the time period corresponding for described refresh rate is divided at least 3 sections, one section or many therein
The section time is used for showing that virtual image, remaining at least a period of time are used for observing reality external environment.
Concrete, when using electro-optic deflector array 24, can by each electro-optic deflector given not
Same control voltage so that the direction of each electro-optic deflector emergent light of a certain visual field is slightly different, thus
The light making direction outgoing meets divergent spherical wave, and the corresponding different human eye of different degrees of divergence converges
Point, i.e. defines the different depth of field, can accurately control to project human eye by electro-optic deflector array 24
The depth of field of image.
When convergence of rays device 21 is automatically controlled liquid microlens array, as shown in Figure 8, display floater 2
Including planar waveguide 20 and automatically controlled liquid microlens array 26, automatically controlled liquid microlens array 26 is arranged at flat
The close human eye side of board waveguide 20, for deflecting the light beam that planar waveguide 20 reflects so that it is
Converge to human eye.
The embodiment of the present application provides the near-eye display system using automatically controlled liquid microlens array 26 being used as enhancing
During reality display, so that the effect of display is more preferable, arranging away from human eye side at planar waveguide 20
Light modulation structure 41, light modulation structure 41 specially pdlc film layer and be used for controlling described pdlc film layer break-make
The photoswitch of electricity；Use and show virtual image and reality external environment at times；If the refresh rate of human eye is
30Hz, is divided into 2 sections by the time period corresponding for this refresh rate, and a period of time is used for showing virtual image, this section
The photoswitch making pdlc film layer in time disconnects so that pdlc film layer is opaque state；Another a period of time
For observing reality external environment, the photoswitch making pdlc film layer in this period is open-minded, thus to PDLC
Film layer applies voltage so that it is transparent state so that external environmental light can pass through pdlc film layer, flat board
Human eye can be entered, it is achieved observe the extraneous ring of reality after waveguide 20 and automatically controlled liquid microlens array 26
Border；And the embodiment of the present application provides the near-eye display system using automatically controlled liquid microlens array 26 being used as
During virtual reality display, light modulation structure 41 can be set.
In the embodiment of the present application, all of automatically controlled liquid microlens array may each be electrically-controlled liquid crystal lenticule battle array
Row.
The embodiment of the present application provides the near-eye display system using automatically controlled liquid microlens array 26 being used as increasing
During strong reality display, so that the effect of display is more preferable, it is also possible at planar waveguide 20 away from human eye
Side arranges another automatically controlled liquid microlens array, and automatically controlled liquid microlens array 26 and another electricity described
The afocal system of control liquid microlens array composition 1:1, due to planar waveguide 20 transmissive light so that outer
Boundary's ambient light can enter human eye by the afocal system of 1:1, and due to external environment just by 1:1's
Afocal system enters human eye, will not zoom in or out to external world so that user can feel more really
By external environment.
Owing to automatically controlled liquid microlens array 26 and another automatically controlled liquid microlens array described are not added with voltage not
Work, automatically controlled liquid microlens array 26 and another automatically controlled unglazed convergence of liquid microlens array described or send out
The function dissipated, does not the most present the effect of light deflection, and ambient light has light to transfer the most to external world, so so that outer
Boundary's ambient light can be by passing through another electricity described after automatically controlled liquid microlens array 26 and planar waveguide 20
Control liquid microlens array enters human eye, it is achieved observe reality external environment.
In the embodiment of the present application, the waveguide in planar waveguide 20 can use Waveguide array, holographical wave guide or
Grating waveguide, wherein, described Waveguide array specifically may refer to the structure shown in Fig. 2, described holographical wave guide
Referring specifically to the structure shown in Fig. 9 and Figure 10, described grating waveguide specifically may refer to the knot shown in Figure 11
Structure.
In another embodiment of the application, seeing Figure 12, described near-eye display system can also include controller
50, controller 50 is electrically connected with light source output unit 1, and the light beam that LASER Light Source 10 sends is through micro mirror battle array
After row 11, controller 50, will by micro mirror array 11 according to the display visual field gray scale of described image information
The beam spread that LASER Light Source 10 sends is multiple light beam, wherein, and each light beam and described image information pair
A pixel correspondence in the image answered, so, can export multiple light beam in each moment, the most permissible
Export multiple pixel, and prior art each moment is only capable of displaying a pixel, due to the pixel of image
Point is constant, and during the increasing number of the pixel shown in each moment, the machinery that micro mirror array is corresponding
The switching frequency of switch will necessarily so, it is possible effectively to reduce opening of switch less than the switching frequency of photoswitch
Close frequency, and within the unit interval in the case of switching frequency reduction, its capacity usage ratio also can carry therewith
High.
In the embodiment of the present application, controller 50 can be single-chip microcomputer, process chip and control circuit etc..
Specifically, the display visual field gray scale of described image information includes in the image that described image information is corresponding
The gray scale of each pixel, can obtain described image according to described image information, then obtain in described image
The gray scale of each pixel, the gray scale of the most each pixel be one display visual field gray scale, such as when
The gray scale of 0 ° of visual field is a value in the gray scale for example, 0～255 of corresponding pixel.
Owing to the display resolution of described near-eye display system is determined by the resolution of micro mirror array 11, therefore,
When the resolution of described image is more than the resolution of micro mirror array 11, the resolution of described image is reduced
To the resolution of no more than micro mirror array 11 so that micro mirror array 11 can display resolution reduce after
All pixels of described image；Resolution at described image is not more than the resolution of micro mirror array 11
Time, it is not necessary to described image is carried out resolution reduction process, described figure can be shown by micro mirror array 11
All pixels of picture.
Specifically, when being shown all pixels of described image by micro mirror array 11, according to described
All pixels of image and the corresponding relation of each micro mirror in micro mirror array 11, and according to each pixel
Gray scale, control the micro mirror corresponding with each pixel and open duration, show often by controlling to open duration
The gray scale of individual pixel；Such as when can obtain that in micro mirror array 11, micro mirror shows the unit of a pixel
Long, the tonal gradation further according to described image divides described unit time, if the tonal gradation of image is 8
, i.e. there are these 256 tonal gradations of 0-255 position, then described unit time are divided into 256 sections, if display
The gray scale of pixel when being 160, then the micro mirror controlling correspondence shows time a length of described unit time of this pixel
*(160+1)/256。
From the foregoing, the near-eye display system that the application first aspect provides, each moment can show
All pixels of described image, when described image is multicolor image, can be carried out in the way of using sequential
Show, compared with one pixel of moment each with prior art display, it is possible to be effectively improved the efficiency of display.
Beneficial effects of the present invention is as follows:
Based on technique scheme, the light beam that in the embodiment of the present invention, LASER Light Source sends is after micro mirror array
Being extended to multiple light beam, the plurality of light beam is reflexed to described convergence of rays device by described planar waveguide,
Converged to human eye by described convergence of rays device again so that each moment by multiple beam convergences to human eye, and
Each light beam shows a pixel, so, can show multiple pixels in each moment, and existing skill
Art each moment is only capable of displaying a pixel, owing to the pixel of image is constant, and in each moment
During the increasing number of pixel of display, the switching frequency of the mechanical switch that micro mirror array is corresponding will necessarily be less than
The switching frequency of photoswitch, so, it is possible effectively to reduce the switching frequency of switch, and within the unit interval
In the case of switching frequency reduces, its capacity usage ratio also can improve therewith.
Embodiment two:
Embodiment of the present invention second aspect additionally provides a kind of virtual reality device, including two sets such as first aspect
The near-eye display system introduced, wherein the first near-eye display system is corresponding with the left eye of people, and the second nearly eye shows
System is corresponding with the right eye of people.
First aspect and second aspect have described in detail near-eye display system concrete structure and
Running, just repeats no more at this.
Concrete, described virtual reality device can also include shell, described first near-eye display system and institute
State the second near-eye display system to be respectively provided with in the housing.
Embodiment three:
Also a kind of augmented reality equipment of the embodiment of the present invention third aspect, introduces including two sets such as first aspect
Near-eye display system, wherein the first near-eye display system is corresponding with the left eye of people, the second near-eye display system with
The right eye of people is corresponding；The external environmental light the second selfoc lens array by described first near-eye display system
Or light modulation structure enters the left eye of people, and by the second GRIN Lens battle array of described second near-eye display system
Row or light modulation structure enter the right eye of people.
Describe concrete structure and the running of near-eye display system in detail,
This just repeats no more.
Concrete, described augmented reality equipment can also include shell, described first near-eye display system and institute
State the second near-eye display system to be respectively provided with in the housing.
Concrete, in the shown near-eye display system of first aspect introduction convergence of rays device 21 be first from
During focusing lens array, described near-eye display system also includes the second selfoc lens array 23, the second autohemagglutination
Focus lens array 23 be arranged at planar waveguide 20 away from human eye side, and the first selfoc lens array 22
With the telescopic system that the second selfoc lens array 23 forms 1:1 so that the external environmental light prestige by 1:1
Remote system enters human eye, and owing to external environment just enters human eye by the telescopic system of 1:1, will not
Zoom in or out to external world so that user can experience external environment more really.
Concrete, in the shown near-eye display system that first aspect is introduced, convergence of rays device 21 is that electric light is inclined
When turning device array, at planar waveguide 20, light modulation structure 40, light modulation structure 40 are set away from human eye side
It is specially pdlc film layer and for controlling the photoswitch of described pdlc film layer power on/off；Use and show at times
Show virtual image and reality external environment；If the refresh rate of human eye is 30Hz, by the time corresponding for this refresh rate
Section is divided into 2 sections, and a period of time is used for showing virtual image, makes the photoswitch of pdlc film layer in this period
Disconnect so that pdlc film layer is opaque state；Another a period of time is used for observing reality external environment, this
The photoswitch making pdlc film layer in the section time is open-minded, thus pdlc film layer is applied voltage so that it is transparent
State so that external environmental light can pass through pdlc film layer, planar waveguide 20 and electro-optic deflector array
Human eye can be entered, it is achieved observe reality external environment after 24.
Concrete, in the shown near-eye display system that first aspect is introduced, convergence of rays device 21 is automatically controlled liquid
During body microlens array, at planar waveguide 20, light modulation structure 41, light modulation structure are set away from human eye side
41 specially pdlc film layers and for controlling the photoswitch of described pdlc film layer power on/off；Use timesharing
Section display virtual image and reality external environment；If the refresh rate of human eye is 31Hz, by corresponding for this refresh rate
Time period is divided into 2 sections, and a period of time is used for showing virtual image, makes the light of pdlc film layer in this period
Switch off so that pdlc film layer is opaque state；Another a period of time is used for observing reality external environment,
The photoswitch making pdlc film layer in this period is open-minded, thus pdlc film layer is applied voltage so that it is in thoroughly
Bright state so that external environmental light can pass through pdlc film layer, planar waveguide 20 and automatically controlled liquid microlens
Human eye can be entered, it is achieved observe reality external environment after array 26.
It is, of course, also possible to arrange another automatically controlled liquid microlens battle array at planar waveguide 20 away from human eye side
Row, and the nothing of automatically controlled liquid microlens array 26 and another automatically controlled liquid microlens array described composition 1:1 is burnt
System, due to planar waveguide 20 transmissive light so that external environmental light can be by the afocal system of 1:1
Enter human eye, and owing to external environment just enters human eye by the afocal system of 1:1, will not be to external world
Zoom in or out so that user can experience external environment more really.
Beneficial effects of the present invention is as follows:
Based on technique scheme, the light beam that in the embodiment of the present invention, LASER Light Source sends is after micro mirror array
Being extended to multiple light beam, the plurality of light beam is reflexed to described convergence of rays device by described planar waveguide,
Converged to human eye by described convergence of rays device again so that each moment by multiple beam convergences to human eye, and
Each light beam shows a pixel, so, can show multiple pixels in each moment, and existing skill
Art each moment is only capable of displaying a pixel, owing to the pixel of image is constant, and in each moment
During the increasing number of pixel of display, the switching frequency of the mechanical switch that micro mirror array is corresponding will necessarily be less than
The switching frequency of photoswitch, so, it is possible effectively to reduce the switching frequency of switch, and within the unit interval
In the case of switching frequency reduces, its capacity usage ratio also can improve therewith.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (11)
1. a near-eye display system, it is characterised in that include LASER Light Source, micro mirror array and display surface
Plate, described display floater includes planar waveguide and convergence of rays device；
The light beam that described LASER Light Source sends is extended to multiple light beam after described micro mirror array, described many
Individual light beam is reflexed to described convergence of rays device by described planar waveguide, then is assembled by described convergence of rays device
To human eye.
2. the system as claimed in claim 1, it is characterised in that described LASER Light Source includes trichroism laser
Light source, collimating mirror group, bundling device, bonder and coupling optical fiber, wherein, described trichroism LASER Light Source exports
Trichroism laser；Described collimating mirror group is arranged on the emitting light path of described trichroism LASER Light Source, for described
Trichroism laser carries out collimation process；Described bundling device is arranged on the emitting light path of described collimating mirror group, is used for
The laser of described collimating mirror group outgoing carries out close bundle process；Described bonder is arranged at going out of described bundling device
Penetrate in light path, for by the laser coupled of described bundling device outgoing to described coupling optical fiber；Described coupling light
Fine and described bonder is connected, and described coupling optical fiber is for being transferred through the laser of described bonder.
3. the system as claimed in claim 1, it is characterised in that described micro mirror array is specially MEMS
Micro mirror array or dmd array.
4. the system as claimed in claim 1, it is characterised in that described convergence of rays device is arranged at institute
State the close human eye side of planar waveguide.
5. the system as claimed in claim 1, it is characterised in that described convergence of rays device is specially
One selfoc lens array or automatically controlled liquid microlens array or electro-optic deflector array.
6. the system as described in any one of claim 1-5, it is characterised in that fill in described convergence of rays
When putting specially the first selfoc lens array, described near-eye display system also includes the second GRIN Lens battle array
Row, described second selfoc lens array be arranged at described planar waveguide away from human eye side.
7. system as claimed in claim 6, it is characterised in that described second selfoc lens array and
The telescopic system of described first selfoc lens array composition 1:1.
8. the system as described in any one of claim 1-5, it is characterised in that described near-eye display system
Also include light modulation structure, described light modulation structure be arranged at described planar waveguide away from human eye side.
9. system as claimed in claim 8, it is characterised in that described light modulation structure is specially PDLC
With the photoswitch for controlling described PDLC power on/off.
10. a virtual reality device, it is characterised in that include arbitrary power in two sets such as claim 1-9
Near-eye display system described in Xiang, wherein the first near-eye display system is corresponding with the left eye of people, and the second nearly eye shows
Show that system is corresponding with the right eye of people.
11. 1 kinds of augmented reality equipment, it is characterised in that include two sets such as any one of claim 6-9 institute
The near-eye display system stated, wherein the first near-eye display system is corresponding with the left eye of people, and the second nearly eye display is
Unite corresponding with the right eye of people；External environmental light is by the second GRIN Lens of described first near-eye display system
Array or light modulation structure enter the left eye of people, and the second self-focusing by described second near-eye display system is saturating
Lens array or light modulation structure enter the right eye of people.
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