CN107340704A - A kind of holographic display - Google Patents
A kind of holographic display Download PDFInfo
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- CN107340704A CN107340704A CN201710004635.2A CN201710004635A CN107340704A CN 107340704 A CN107340704 A CN 107340704A CN 201710004635 A CN201710004635 A CN 201710004635A CN 107340704 A CN107340704 A CN 107340704A
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- 230000003287 optical effect Effects 0.000 claims abstract description 116
- 238000007639 printing Methods 0.000 claims abstract description 37
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- 230000008859 change Effects 0.000 claims abstract description 11
- 238000002834 transmittance Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 110
- 239000004973 liquid crystal related substance Substances 0.000 claims description 20
- 230000002209 hydrophobic effect Effects 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 9
- 238000003491 array Methods 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 description 8
- 238000005286 illumination Methods 0.000 description 4
- 238000009738 saturating Methods 0.000 description 4
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001093 holography Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/04—Processes or apparatus for producing holograms
- G03H1/10—Processes or apparatus for producing holograms using modulated reference beam
- G03H1/12—Spatial modulation, e.g. ghost imaging
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/12—Fluid-filled or evacuated lenses
- G02B3/14—Fluid-filled or evacuated lenses of variable focal length
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Geometry (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Holo Graphy (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The invention provides a kind of holographic display, including:Spatial light modulator array structure, including the more sub-spaces optical modulators being arranged in array, different subspace optical modulators can the different hologram of independent loads, and timesharing is shown;For providing the light source part of light source for spatial light modulator array structure, light source part is arranged at the side of spatial light modulator array structure;And it is arranged at the photoswitch between light source part and spatial light modulator array structure;The photoswitch includes corresponding the multiple printing opacity control areas set with more sub-spaces optical modulators, the light transmittance of each printing opacity control area can change, to control each printing opacity control area to include light transmission state and impermeable light state to the light transmission state of corresponding subspace optical modulator transmitted ray, the light transmission state.Holographic display provided by the present invention reproduces light source when solving the problems, such as using spliced spatial light modulator array as holographic display screen and influenceed on reproducing hologram image quality.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of holographic display.
Background technology
Spliced spatial light modulator array structure in holographic reconstruction display device includes the more height being arranged in array
Spatial light modulator, per sub-spaces optical modulators can the different hologram of independent loads, and timesharing is shown.
In the prior art, in this holographic reconstruction display device using spliced spatial light modulator, reproducing light source can
With the different reproduction light for being same reproduction light source or being independently controlled according to the dispaly state of spatial light modulator
Source.When it is same reproduction light source to reproduce light source, because the reproduction light source is to be constantly in illumination condition, so when in certain a period of time
When carving a certain subspace optical modulator and not showing hologram image, the subspace optical modulator can be passed through by reproducing light source, transmission
Light beam has an impact the viewing effect for watching human eye holographic reconstructed image;It is and different when being corresponded to per sub-spaces optical modulator
Can independent control reproduction light source when, because directly control reproduces the switch of light source, therefore work as a certain subspace light of a certain moment
Light source is reproduced when modulator is loaded hologram, corresponding to it to be lit, because the luminous energy that light source is sent is from being illuminated to stable need
A process is wanted, in this process, the hologram modulates institute loaded in unstable reconstruction beam quilt spatial light modulator
Obtained reconstruction of hologram picture quality is unstable, so as to cause reconstruction of hologram image effect to be deteriorated.
The content of the invention
It is an object of the invention to provide a kind of holographic display, can solve the problem that spliced spatial light modulator array knot
When each subspace optical modulator timesharing shows hologram in structure, the reproduction light source pair of the subspace optical modulator of hologram is not shown
The interference of reconstruction of hologram image, the problem of causing image quality decrease.
Technical scheme provided by the present invention is as follows:
A kind of holographic display, including:
Spatial light modulator array structure, more height that the spatial light modulator array structure includes being arranged in array are empty
Between optical modulator, different subspace optical modulators can the different hologram of independent loads, and timesharing is shown;
For providing the light source part of light source for the spatial light modulator array structure, the light source part is arranged at institute
State the side of spatial light modulator array structure;
And it is arranged at the photoswitch between the light source part and the spatial light modulator array structure;
Wherein, the photoswitch includes corresponding the multiple printing opacity control zones set with more sub-spaces optical modulators
Domain, and the light transmittance of each printing opacity control area can change, to control each printing opacity control area empty to corresponding son
Between optical modulator transmitted ray light transmission state, wherein the light transmission state includes light transmission state and impermeable light state.
Further, the photoswitch includes:
The first transparency electrode and second transparency electrode being oppositely arranged;
And it is arranged at the liquid crystal layer between the first transparency electrode and the second transparency electrode;
Wherein, at least one electrode in the first transparency electrode and the second transparency electrode includes the multiple first electricity
Pole block, multiple first electrode blocks are corresponded with multiple subspace optical modulators and set, the photoswitch is drawn
It is divided into multiple printing opacity control areas, each first electrode block coordinates with relative electrode drives each self-corresponding printing opacity
Liquid crystal layer in control area.
Further, the holographic display also includes:
For inputting control signal to the spatial light modulator array structure, to drive the control of each subspace optical modulator
Device processed;Wherein, the first transparency electrode of the photoswitch and second transparency electrode are connected with the controller, and the controller is also
For controlling the driving synchronous with corresponding subspace optical modulator of each printing opacity control area of the photoswitch.
Further, the holographic display also includes:
For causing the light of the light source part outgoing to enter the spatial light modulator battle array after adjusting to preset state
The light adjustment part of array structure;The light adjustment part includes array structure thereof, and the array structure thereof is including being in
Multiple lens units of array arrangement, multiple lens units are corresponded with more sub-spaces optical modulators and set;
The array structure thereof is liquid lens array structure, and it is saturating that the liquid lens array structure includes multiple liquid
Mirror unit.
Further, the liquid lens array structure includes:
The first transparency carrier and the second transparency carrier being oppositely arranged;
The 4th transparency electrode is provided with second transparency carrier, second transparency carrier is included towards the son
The first surface of spatial light modulator;
The 3rd transparency electrode being oppositely arranged with the 4th transparency electrode;
And the insulating course on the first surface is formed at, the insulating course includes multiple recess regions, multiple grooves
Region corresponds with multiple subspace optical modulators and set, covered with hydrophobic layer on the insulating course, and described
The first liquid is filled with recess region, second liquid is filled between first liquid and the first transparency electrode;
Wherein, first liquid is nonpolar iknsulating liquid, and the second liquid is conductive or polar liquid, described the
The liquid surface shape formed between one liquid and the second liquid can be according to the 3rd transparency electrode and the described 4th
Apply voltage difference in transparency electrode and change, to adjust the focal length of the liquid lens unit.
Further, at least one electrode in the 3rd transparency electrode and the 4th transparency electrode includes multiple the
Two electrode blocks, multiple second electrode blocks are corresponded with multiple recess regions and set, the photoswitch is divided
Into multiple liquid lens units, each second electrode block can individually be driven, to cause each liquid
The focal length of body lens unit can be adjusted individually;
Or the 3rd transparency electrode and the 4th transparency electrode are that can cover the whole space light modulation
The monoblock electrode in the region corresponding to device array structure, and in the 3rd transparency electrode and the 4th transparency electrode distinguish have with it is more
Individual groove corresponds the multiple Qu Donglingyus set, and to form the liquid lens unit, each drive area being capable of coverlet
Solely driving, to enable the focal length of each liquid lens unit individually to adjust.
Further, between the hydrophobic layer and second transparency carrier formed with insulating barrier.
Further, the 3rd transparency electrode and the 4th transparency electrode are connected with the controller, and the controller is also
For controlling the driving synchronous with corresponding subspace optical modulator of each liquid lens unit of the liquid lens array.
Further, the 3rd transparency electrode shares same electrode with the second transparency electrode.
Further, the holographic display also includes:
Holographic beam for each subspace optical modulator to be emitted is adjusted, to cause each subspace optical modulator to go out
The holographic beam penetrated deflects to the deflection optical mechanism of default display space, and it is arranged at the spatial light modulator array structure
The remote light source part side;
The multiple subspace optical modulator comprises at least the first subspace optical modulator and the second subspace optical modulator;
The deflection optical mechanism comprises at least:
The semi-transparent semi-reflecting lens being correspondingly arranged with first subspace optical modulator, the semi-transparent semi-reflecting lens are relative to described
The holographic beam of first subspace optical modulator outgoing is set with the first inclined at inclination angles, and the semi-transparent semi-reflecting lens enable to
The holographic beam of first subspace optical modulator outgoing is transmitted through the default display space;
And the speculum being correspondingly arranged with second subspace optical modulator, the speculum is relative to described
The holographic beam of two subspace optical modulators outgoing is set with the second inclined at inclination angles, and described in the speculum enables to
The holographic beam of second subspace optical modulator outgoing is entered on the semi-transparent semi-reflecting lens after speculum reflection, then is passed through
The default display space is emitted to after the semi-transparent semi-reflecting lens reflection.
Beneficial effects of the present invention are as follows:
Holographic display provided by the present invention, light is provided between light source and spliced spatial light modulator array
Switch, the photoswitch are divided into multiple printing opacity control areas corresponding with each subspace optical modulator, can control the light of light source
Whether beam is by the way that spliced spatial light modulator array subregion illumination can be achieved without change in light source.Group spatial light modulator
Load hologram, photoswitch control to should the printing opacity control area of subspace optical modulator be light transmission state so that reproduction light
Beam is by so as to illuminated holograms;Group spatial light modulator does not load hologram, and photoswitch controls corresponding printing opacity control zone
Domain is impermeable light state so that reconstruction beam is not by so that not illuminated holograms.As can be seen here, it is provided by the present invention complete
Cease display device its not by way of directly controlling light source to switch in itself, but can by photoswitch come directly control correspondence
The reconstruction beam of each subspace optical modulator by or not by solving using spliced spatial light modulator as holographic aobvious
Light source is reproduced during display screen on reproducing the problem of hologram image quality influences.
Brief description of the drawings
Fig. 1 represents the structural representation of the first embodiment of holographic display provided by the present invention;
Fig. 2 represents the structural representation of second of embodiment of holographic display provided by the present invention;
Fig. 3 represents the structural representation of the third embodiment of holographic display provided by the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this hair
Bright part of the embodiment, rather than whole embodiments.Based on described embodiments of the invention, ordinary skill
The every other embodiment that personnel are obtained, belongs to the scope of protection of the invention.
For in the prior art using holographic display each subspace optical modulator point of spliced spatial light modulator
When showing hologram, due to controlling light source switch, can to reproduce subspace optical modulator of the light source to not showing hologram
Reconstruction of hologram image produce interference, the problem of causing image quality decrease, the invention provides a kind of holographic display, its
Interference of reconstruction beam of the reduction without the subspace optical modulator of display hologram to reconstruction of hologram image is can effectively solve the problem that,
Improve picture quality.
As shown in Figure 1 to Figure 3, holographic display provided by the present invention, including:
Spatial light modulator array structure 100, the spatial light modulator array structure 100 are more including being arranged in array
Sub-spaces optical modulator 101, different subspace optical modulators 101 can the different hologram of independent loads, and timesharing shows
Show;
For providing the light source part 200 of light source, the light source part for the spatial light modulator array structure 100
200 are arranged at the side of the spatial light modulator array structure 100;
And it is arranged at the photoswitch between the light source part 200 and the spatial light modulator array structure 100
300;
Wherein, the photoswitch 300 includes corresponding the multiple printing opacity controls set with more sub-spaces optical modulators 101
Region processed, and the light transmittance of each printing opacity control area can change, to control each printing opacity control area to corresponding
The light transmission state of the transmitted ray of subspace optical modulator 101, wherein the light transmission state includes light transmission state and light tight
State.
Holographic display provided by the present invention, light source part 200 and spliced spatial light modulator array 100 it
Between be provided with photoswitch 300, the photoswitch 300 is divided into multiple printing opacity control zones corresponding with each subspace optical modulator 101
Domain, the light beam of light source part 100 can be controlled whether by the way that spliced space can be achieved without change in light source part 100 itself
Light modulator arrays subregion illuminates.Group spatial light modulator 101 loads hologram, and photoswitch 300 is controlled to should subspace
The printing opacity control area of optical modulator 101 is light transmission state so that reconstruction beam is by so as to illuminated holograms;Work as subspace
Optical modulator 101 does not load hologram, and it is impermeable light state that photoswitch 300, which controls corresponding printing opacity control area, so that reproduces
Light beam is not by so that not illuminated holograms.
As can be seen here, holographic display provided by the present invention its not by directly controlling what light source part switched in itself
Mode, but can directly be controlled by photoswitch 300 reconstruction beam of corresponding each subspace optical modulator 101 by or not
By reproducing light source when solving using spliced spatial light modulator as holographic display screen to reproducing hologram image quality shadow
The problem of ringing.
It should be noted that in holographic display provided by the present invention, spliced spatial light modulator array
Frame 102 is set between each subspace optical modulator 101, more sub-spaces optical modulators 101 are divided into by frame 102, and
Each subspace optical modulator 101 individually loads hologram.
Illustrate the preferred embodiment of holographic display provided by the present invention below.
As shown in Figure 1 to Figure 3, in the holographic display that the preferred embodiment of the present invention is provided, the photoswitch 300 wraps
Include:
The first transparency electrode 311 and second transparency electrode 312 being oppositely arranged;
And it is arranged at the liquid crystal layer 313 between the first transparency electrode 311 and the second transparency electrode 312;
Wherein, at least one electrode in the first transparency electrode 311 and the second transparency electrode 312 includes multiple
First electrode block, multiple first electrode blocks are corresponded with multiple subspace optical modulators 101 and set, by described in
Photoswitch 300 is divided into multiple printing opacity control areas, and each first electrode block coordinates driving each with relative electrode
Liquid crystal layer 313 in self-corresponding printing opacity control area.
Using such scheme, in such scheme, an electricity in first transparency electrode 311 or second transparency electrode 312
Can be extremely face electrode, and another electrode can include multiple transparent first electrode blocks, or, it can also be saturating by first
Prescribed electrode 311 and second transparency electrode 312 are both designed as including multiple transparent first electrode blocks, and multiple transparent first electrode blocks can
So that light irradiation region division will be reproduced as multiple printing opacity control areas corresponding with more sub-spaces optical modulators 101, Mei Getou
Bright first electrode block and electrode drive corresponding thereto each correspond to the liquid crystal molecule in printing opacity control area.Wherein, by
The first transparency electrode 311 and second transparency electrode 312 of the both sides of liquid crystal layer 313 apply voltage, make the liquid crystal layer 313
The row of liquid crystal molecule controls the upset of liquid crystal molecule to changing.Do not arranged according to liquid crystal molecule to asynchronous light transmittance also not
With this characteristic, when the vertical light arrangement of the liquid crystal molecule, light can pass through the liquid crystal layer 313;When the liquid crystal
When molecule arranges with light ray parallel, light can not be just no by the liquid so as to reach control by the liquid crystal layer 313
The purpose of crystal layer 313, so control each printing opacity control area light of the photoswitch 300 by or not by the way that and then solution is never
The problem of showing interference of the reconstruction beam of the subspace optical modulator 101 of hologram to reconstruction of hologram image.
In preferred embodiment provided by the present invention, the holographic display also includes:For to the spatial light
Modulator array structure 100 inputs control signal, to drive the controller of each subspace optical modulator 101;Wherein, the light is opened
The first transparency electrode 311 and second transparency electrode 312 for closing 300 are connected with the controller, and the controller is additionally operable to control
Each printing opacity control area driving synchronous with corresponding subspace optical modulator 101 of the photoswitch 300.
It should be noted that in such scheme, the photoswitch 300 using liquid crystal molecule arrange to it is different when light transmittance not
Same characteristic is just no by the way that this mode can cause each printing opacity control area to be adjusted with corresponding subspace light to realize control
The synchronous driving of device processed 101, during make it that subspace optical modulator 101 loads hologram, corresponding printing opacity control area is corresponding
Ground drives liquid crystal molecule to be arranged perpendicular to light, and causes light by and illuminated holograms, and subspace optical modulator 101 is not added with
When carrying hologram, corresponding printing opacity control area correspondingly drives liquid crystal molecules parallel to be arranged in light, so as to so that light
Not by without illuminated holograms.
It should be appreciated that in actual applications, the photoswitch 300 can also use other modes to realize, such as:Institute
State and the light shielding block that can be removed is provided with each printing opacity control area of photoswitch 300, group spatial light modulator 101 is not loaded with entirely
During breath figure, then light shielding block corresponding to control shelters from printing opacity control area, when group spatial light modulator 101 loads hologram,
Then light shielding block corresponding to control is removed without blocking printing opacity control area;Exist for the specific implementation of the photoswitch 300
This and without limitation.
It should also be noted that, the photoswitch except can control light by or not by can also be by changing
Become light transmittance, according to being actually needed, the light transmission state for controlling light is semi-transparent light state.
In addition, in the holographic display that the embodiment of the present invention is provided, the holographic display also includes:For
So that the light that the light source part 200 is emitted enters the spatial light modulator array structure 100 after adjusting to preset state
Light adjustment part.
In such scheme, the light source part 200 can be a spot light, and adjusting part by the light can incite somebody to action
The light of the spot light is adjusted to collimate reconstruction beam and be illuminated for each subspace optical modulator 101 by photoswitch 300,
Or it can also be the light that the light of the light source part 200 can be adjusted to by light adjustment part required for other
Each subspace optical modulators 101 of Shu Laiwei are illuminated.
In preferred embodiment provided by the present invention, the light adjustment part includes array structure thereof, described
Lens array structure includes multiple lens units for being arranged in array, a pair of multiple lens units and more sub-spaces optical modulators 1
It should set.
Using such scheme, by each lens unit in array structure thereof 400, corresponding subspace light can be adjusted
The reproduction illumination light of modulator 101.It should be noted that in actual applications, the light adjustment part can not only limit to
In array structure thereof, it can also be according to other optical textures for being actually needed setting, a kind of preferred embodiment be only provided herein,
But it is defined not to this.
In preferred embodiment provided by the present invention, as shown in Figure 1 to Figure 3, the array structure thereof is that liquid is saturating
Lens array structure 400, the liquid lens array structure 400 include multiple liquid lens units.
In such scheme, the liquid lens array structure 400 of the use of array structure thereof 400, on the one hand, with adopting
Compared with the multiple discrete optical lenses of tradition, be advantageous to the flattening of whole device;On the other hand, liquid lens unit can be with
Change focal length, so as to be to provide to reproduce illuminating bundle per sub-spaces optical modulator 101 personalizedly.It will be understood
It is that in actual applications, the array structure thereof 400 is not limited solely to this.
In addition, in preferred embodiment provided by the present invention, as shown in Figure 1 to Figure 3, the liquid lens array structure
400 include:
The first transparency carrier and the second transparency carrier 410 being oppositely arranged;
Be provided with the 4th transparency electrode on second transparency carrier 410, second transparency carrier 410 include towards
The first surface of the subspace optical modulator 101;
The 3rd transparency electrode 416 being oppositely arranged with the 4th transparency electrode;
And the insulating course 412 on the first surface is formed at, the insulating course 412 includes multiple recess regions, more
Individual recess region is corresponded with multiple subspace optical modulators 101 and set, covered with hydrophobic on the insulating course 412
Layer 413, and the first liquid 414 is filled with the recess region, in first liquid 414 and the first transparency electrode
Second liquid 415 is filled between 420;
Wherein, first liquid 414 is nonpolar iknsulating liquid, and the second liquid 415 is conductive or polar liquid,
The liquid surface shape formed between first liquid 414 and the second liquid 415 can be according to the 3rd transparent electricity
Pole 416 is different from applying voltage in the 4th transparency electrode and changes, to adjust the focal length of the liquid lens unit.
In such scheme, as shown in figure 1, insulating course 412 among being made on second transparency carrier 410,
Middle insulating course 412 is in network structure, and each mesh forms a recess region, and is correspondingly formed a liquid lens unit,
Each corresponding sub-spaces optical modulator 101 of liquid lens unit;In second transparency carrier 410 and middle insulating course
Hydrophobic layer 413 is covered on 412, hydrophobic layer 413 can use the stronger materials of hydrophobicity such as Teflon (Teflon), and be anti-
Only hydrophobic layer 413 is punctured by applied voltage, it is preferred that can the hydrophobic layer 413 and second transparency carrier 410 it
Between, one layer of insulating medium layer is first made below hydrophobic layer 413, such as:Using the dielectric layer of polyimides;In middle insulating course
The first liquid 414 of filling, i.e., nonpolar iknsulating liquid (such as mineral oil etc.) inside 412 networked pore structures.Electricity is not being loaded
During pressure, the height and middle insulating course 412 of the first liquid 414 are highly equal, are second liquids 415 on the first liquid 414,
I.e. conductive or polar liquid (such as saline solution or deionized water etc.), is the 3rd transparency electrode in the top of second liquid 415
416 (the 3rd transparency electrode 416 can be transparent conductive electrode made of ITO, ZnO or conducting polymer), in non-on-load voltage
When, the contact surface of the liquid 414 of second liquid 415 and first is plane (the first liquid level a) i.e. shown in Fig. 1, when saturating the 3rd
, will be by not soaking between second liquid 415 and middle insulating course 412 between prescribed electrode 416 and middle insulating course 412 during on-load voltage
Profit is changed into infiltrating, and is tapered into the increase of voltage, contact angle between the two, so as to the liquid of second liquid 415 and first
414 contact surface is changed into curved surface, and (the second liquid level b) i.e. shown in Fig. 1, so as to form liquid lens, sends out light source part 200
The reconstruction beam adjustment gone out, is allowed to be changed into collimated illumination light or the light beam required for other.
In the holographic display that the embodiment of the present invention is provided, it is preferred that the 3rd transparency electrode 416 and described
At least one electrode in 4th transparency electrode includes multiple second electrode blocks, multiple second electrode blocks with it is multiple described recessed
Groove region, which corresponds, to be set, and the photoswitch 300 is divided into multiple liquid lens units, each second electricity
Pole block can individually be driven, to enable the focal length of each liquid lens unit individually to adjust.
Using such scheme, an electrode in the 3rd transparency electrode 416 and the 4th transparency electrode is face electricity
Pole, another electrode can be divided into multiple transparent second electrode blocks, or, it can also be the 3rd transparency electrode 416 and
Four transparency electrodes are both designed as including multiple transparent second electrode blocks, and multiple transparent second electrode blocks can be by liquid lens array
Structure 400 is divided into multiple liquid lens units corresponding with more sub-spaces optical modulators 101, each transparent second electrode block
Electrode corresponding thereto is operated alone, to cause the first liquid 414 and the second liquid each in corresponding liquid lens unit
The contact surface change of body 415, that is to say, that each liquid lens unit can individually control the electricity being applied on second electrode block
Pressure, change the liquid lens unit focal length to control, so as to be to provide to reproduce per sub-spaces optical modulator 101 to shine personalizedly
Mingguang City's beam.
Of course, it should be understood that in actual applications, each liquid lens unit can also be realized by other means
Drive control, such as:3rd transparency electrode 416 and the 4th transparency electrode are that can cover the whole space
The monoblock electrode in the region corresponding to light modulator arrays structure 100, and the 3rd transparency electrode 416 and the 4th transparency electrode
Upper differentiation has corresponds the multiple Qu Donglingyus set with multiple recess regions, each to form the liquid lens unit
Drive area can be driven separately, to enable the focal length of each liquid lens unit individually to adjust, with control into
It is required preset state to enter the light beam in each subspace optical modulator 101.
In addition it is also necessary to illustrate, the electrode in each liquid lens unit can also be driven simultaneously, carry out holography
During display, each liquid lens unit is driven simultaneously, to cause the first liquid 414 and second liquid in each liquid lens unit
415 contact surface is curved surface.
In addition, in embodiment provided by the present invention, it is preferred that the 3rd transparency electrode 416 and the 4th transparent electricity
Pole is connected with the controller, the controller be additionally operable to control each liquid lens unit of the liquid lens array with it is corresponding
The synchronous driving of subspace optical modulator 101.
Using such scheme, it is possible to achieve each liquid lens unit is synchronous with corresponding each subspace optical modulator 101 to be driven
It is dynamic.
In addition, in embodiment provided by the present invention, it is preferred that as shown in figure 1, the 3rd transparency electrode 416 with
The second transparency electrode 312 shares same electrode.Using such scheme, by the second transparency electrode in the photoswitch 300
312 share same electrode with the 3rd transparency electrode 416 in the liquid lens array, simplify manufacture craft, meanwhile, more favorably
In device flattening, in addition, being also convenient for synchronous driving photoswitch 300, the liquid lens array and the air-conditioning optical modulator
Array so that during holographic display works, only when corresponding subspace optical modulator 101 loads hologram, need
With control first transparency electrode 311 simultaneously, on-load voltage in the transparency electrode 416 of second transparency electrode 312 and the 3rd so that with adding
Carry connecing for the liquid 414 of second liquid 415 and first in the corresponding liquid lens unit of subspace optical modulator 101 of hologram
Contacting surface is in predetermined curved surface state, and the printing opacity control area liquid crystal layer 313 of corresponding photoswitch 300 passes through shape in light
State.
Of course, it should be understood that whole liquid lens units can also be shown in holography in the liquid lens array
Device is constantly in the state of electrode on-load voltage during working, that is to say, that whole Hes of liquid lens unit second liquid 415
The contact surface of first liquid 414 is in curved surface state all the time.
It should also be noted that, in the above-described embodiments, first liquid and the second liquid are located at the described 3rd
Between transparency electrode and the 4th transparency electrode, in other embodiments of the invention, as shown in Fig. 2 the described 3rd is transparent
Electrode 416 can also be arranged at remote first liquid and the side of second transparency carrier.
In addition, in embodiment provided by the present invention, it is preferred that the holographic display also includes:For by respectively
The holographic beam that subspace optical modulator 101 is emitted is adjusted, to cause the holographic optical of each outgoing of subspace optical modulator 101
To the deflection optical mechanism of default display space, it is arranged at the remote of the spatial light modulator array structure 100 for beam steering
The side of the light source part 200.
Using such scheme, the deflection optical mechanism is by by the reproduction holographic optical of each diffraction of subspace optical modulator 101
Beam steering to default display space, such as:It will be deflected to together by the reproduction holographic beam of each diffraction of subspace optical modulator 101
One display space so that observer will not produce the discontinuous sensation of hologram image.
In embodiment provided by the present invention, it is preferred that as shown in figure 3, the multiple subspace optical modulator 101 to
Include the first subspace optical modulator 101a and the second subspace optical modulator 101b less;The deflection optical mechanism is at least wrapped
Include:The semi-transparent semi-reflecting lens 601 being correspondingly arranged with the first subspace optical modulator 101a, the semi-transparent semi-reflecting lens 601 are relative
Set in the holographic beam of the first subspace optical modulator 101a outgoing with the first inclined at inclination angles, it is described semi-transparent semi-reflecting
Mirror 601 enables to the holographic beam of the first subspace optical modulator 101a outgoing to be transmitted through the default display space;
And the speculum 602 being correspondingly arranged with the second subspace optical modulator 101b, the speculum 602 is relative to described
The holographic beam of second subspace optical modulator 101b outgoing is set with the second inclined at inclination angles, and the energy of the speculum 602
Enough so that the holographic beam of the second subspace optical modulator 101b outgoing entered after the speculum 602 reflection it is described
On semi-transparent semi-reflecting lens 601, then the default display space is emitted to after the semi-transparent semi-reflecting lens 601 reflection.
Using such scheme, the deflection optical mechanism can be come deviation using speculum 602 and semi-transparent semi-reflecting lens 601
Light, realize that the holographic beam for being emitted each subspace optical modulator 101 deflects to the purpose of default display space, structure letter
It is single.In actual applications, the deflection optical mechanism can also use other structures to realize, to this without limiting.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and replacement can also be made, these improve and replaced
Also it should be regarded as protection scope of the present invention.
Claims (10)
- A kind of 1. holographic display, it is characterised in that including:Spatial light modulator array structure, the spatial light modulator array structure include the more sub-spaces light being arranged in array Modulator, different subspace optical modulators can the different hologram of independent loads, and timesharing is shown;For providing the light source part of light source for the spatial light modulator array structure, the light source part is arranged at the sky Between light modulator arrays structure side;And it is arranged at the photoswitch between the light source part and the spatial light modulator array structure;Wherein, the photoswitch includes corresponding the multiple printing opacity control areas set with more sub-spaces optical modulators, and The light transmittance of each printing opacity control area can change, to control each printing opacity control area to be adjusted to corresponding subspace light The light transmission state of device transmitted ray processed, wherein the light transmission state includes light transmission state and impermeable light state.
- 2. holographic display according to claim 1, it is characterised in thatThe photoswitch includes:The first transparency electrode and second transparency electrode being oppositely arranged;And it is arranged at the liquid crystal layer between the first transparency electrode and the second transparency electrode;Wherein, at least one electrode in the first transparency electrode and the second transparency electrode includes multiple first electrodes Block, multiple first electrode blocks are corresponded with multiple subspace optical modulators and set, the photoswitch is divided Into multiple printing opacity control areas, each first electrode block coordinates with relative electrode drives each self-corresponding printing opacity control Liquid crystal layer in region processed.
- 3. holographic display according to claim 2, it is characterised in thatThe holographic display also includes:For inputting control signal to the spatial light modulator array structure, to drive the control of each subspace optical modulator Device;Wherein, the first transparency electrode of the photoswitch and second transparency electrode are connected with the controller, and the controller is also used In each printing opacity control area driving synchronous with corresponding subspace optical modulator for controlling the photoswitch.
- 4. holographic display according to claim 3, it is characterised in thatThe holographic display also includes:For causing the light of the light source part outgoing to enter the spatial light modulator array knot after adjusting to preset state The light adjustment part of structure;The light adjustment part includes array structure thereof, and the array structure thereof includes the multiple lens being arranged in array Unit, multiple lens units are corresponded with more sub-spaces optical modulators and set.
- 5. holographic display according to claim 4, it is characterised in thatThe array structure thereof is liquid lens array structure, and the liquid lens array structure includes multiple liquid lens lists Member,The liquid lens array structure includes:The first transparency carrier and the second transparency carrier being oppositely arranged;The 4th transparency electrode is provided with second transparency carrier, second transparency carrier is included towards the subspace The first surface of optical modulator;The 3rd transparency electrode being oppositely arranged with the 4th transparency electrode;And the insulating course on the first surface is formed at, the insulating course includes multiple recess regions, multiple recess regions Correspond and set with multiple subspace optical modulators, covered with hydrophobic layer on the insulating course, and in the groove The first liquid is filled with region, second liquid is filled between first liquid and the first transparency electrode;Wherein, first liquid is nonpolar iknsulating liquid, and the second liquid is conductive or polar liquid, first liquid The liquid surface shape formed between body and the second liquid can be transparent according to the 3rd transparency electrode and the described 4th Apply voltage difference on electrode and change, to adjust the focal length of the liquid lens unit.
- 6. holographic display according to claim 5, it is characterised in thatAt least one electrode in 3rd transparency electrode and the 4th transparency electrode includes multiple second electrode blocks, multiple The second electrode block is corresponded with multiple recess regions and set, and the photoswitch is divided into multiple liquid Lens unit, each second electrode block can individually be driven, to cause Jiao of each liquid lens unit Away from can individually adjust;Or the 3rd transparency electrode and the 4th transparency electrode are that can cover the whole spatial light modulator battle array The monoblock electrode in the region corresponding to array structure, and in the 3rd transparency electrode and the 4th transparency electrode distinguish have with it is multiple recessed Groove corresponds the multiple Qu Donglingyus set, and to form the liquid lens unit, each drive area can individually be driven It is dynamic, to enable the focal length of each liquid lens unit individually to adjust.
- 7. holographic display according to claim 5, it is characterised in thatFormed with insulating barrier between the hydrophobic layer and second transparency carrier.
- 8. holographic display according to claim 5, it is characterised in that3rd transparency electrode and the 4th transparency electrode are connected with the controller, and the controller is additionally operable to control the liquid Each liquid lens unit driving synchronous with corresponding subspace optical modulator of body lens array.
- 9. holographic display according to claim 5, it is characterised in that3rd transparency electrode shares same electrode with the second transparency electrode.
- 10. holographic display according to claim 1, it is characterised in thatThe holographic display also includes:Holographic beam for each subspace optical modulator to be emitted is adjusted, to cause each subspace optical modulator outgoing Holographic beam deflects to the deflection optical mechanism of default display space, and it is arranged at the remote of the spatial light modulator array structure From the side of the light source part;The multiple subspace optical modulator comprises at least the first subspace optical modulator and the second subspace optical modulator;It is described Deflection optical mechanism comprises at least:The semi-transparent semi-reflecting lens being correspondingly arranged with first subspace optical modulator, the semi-transparent semi-reflecting lens are relative to described first The holographic beam of subspace optical modulator outgoing is set with the first inclined at inclination angles, and the semi-transparent semi-reflecting lens enable to described The holographic beam of first subspace optical modulator outgoing is transmitted through the default display space;And the speculum being correspondingly arranged with second subspace optical modulator, the speculum is relative to the described second son The holographic beam of spatial light modulator outgoing is set with the second inclined at inclination angles, and the speculum enables to described second The holographic beam of subspace optical modulator outgoing is entered on the semi-transparent semi-reflecting lens after speculum reflection, then through described The default display space is emitted to after semi-transparent semi-reflecting lens reflection.
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