CN105892075B - A kind of holographic display system and holographic display methods - Google Patents
A kind of holographic display system and holographic display methods Download PDFInfo
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- CN105892075B CN105892075B CN201610405267.8A CN201610405267A CN105892075B CN 105892075 B CN105892075 B CN 105892075B CN 201610405267 A CN201610405267 A CN 201610405267A CN 105892075 B CN105892075 B CN 105892075B
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000003287 optical effect Effects 0.000 claims abstract description 51
- 239000011521 glass Substances 0.000 claims abstract description 34
- 239000000758 substrate Substances 0.000 claims description 92
- 239000004973 liquid crystal related substance Substances 0.000 claims description 19
- 230000005684 electric field Effects 0.000 claims description 15
- 238000001093 holography Methods 0.000 claims description 13
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims 1
- 230000010287 polarization Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 1
- 230000004886 head movement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 244000144985 peep Species 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
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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
- G03H1/22—Processes or apparatus for obtaining an optical image from holograms
- G03H1/2294—Addressing the hologram to an active spatial light modulator
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Abstract
The invention discloses a kind of holographic display system and holographic display methods, it is related to display technology field, while for providing hologram three-dimensional image information to the user, prevents other staff from obtaining the hologram three-dimensional image information, ensure the safety of user information.The holographic display system includes display device and peep-proof glasses, and the display device includes：For producing the backlight of laser beam；Holographic encoding data for generating holographic encoding data according to hologram three-dimensional image information to be shown, and are divided into the first sub- holographic encoding data and the second sub- holographic encoding data by data processor；First spatial light modulator, including multiple first pixels, for being modulated according to the first sub- holographic encoding data to the laser beam for being incident to each first pixel.The peep-proof glasses include the second space optical modulator being connected with data processor, including multiple second pixels, for being modulated according to the second sub- holographic encoding data to the laser beam for being incident to each second pixel.The present invention is used to provide safe hologram three-dimensional image information to the user.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of holographic display system and holographic display methods.
Background technology
At present, to improve the viewing experience of user, display system, which is often designed to have, can provide 3-D view to the user
The function of information.Specifically, the course of work with above-mentioned display system is：The pixel column for showing left-eye image is sent out
The light gone out is projected to the left eye of observer, and the light that the pixel column for showing eye image is sent is projected to the right side of observer
Eye, so that observer can synthesize three in the brain according to the eye image that the left-eye image and right eye that left eye is observed are observed
Tie up image information.
However, the inventors of the present application found that although above-mentioned display system can provide three-dimensional image information to the user,
Other staff can also obtain the three-dimensional image information, can not ensure the safety of user information.
The content of the invention
It is an object of the invention to provide a kind of holographic display system and holographic display methods, for providing holography to the user
While three-dimensional image information, prevent other staff from obtaining the hologram three-dimensional image information, ensure the safety of user information.
To reach above-mentioned purpose, holographic display system provided by the invention adopts the following technical scheme that：
A kind of holographic display system, the holographic display system include display device and peep-proof glasses；Wherein, the display dress
Put including：Backlight, the backlight are used to produce laser beam；Data processor, the data processor are used for according to be shown
Hologram three-dimensional image information generate holographic encoding data, and by the holographic encoding data be divided into the first sub- holographic encoding data and
Second sub- holographic encoding data；The first spatial light modulator being connected with the data processor, first space light modulation
Device includes multiple first pixels, and first spatial light modulator is used for according to the described first sub- holographic encoding data, to incidence
Laser beam to each first pixel is modulated；The peep-proof glasses include：Second space optical modulator, described second
Spatial light modulator is connected with the data processor, and the incidence surface of the second space optical modulator is towards first space
The light-emitting surface of optical modulator, the second space optical modulator include multiple second pixels, and the second space optical modulator is used
According to the described second sub- holographic encoding data, the laser beam for being incident to each second pixel is modulated.
Since holographic display system provided by the present invention includes structure as above, the laser sent by backlight
After beam enters each first pixel in the first spatial light modulator, it can be modulated by the first sub- holographic encoding data, by the
The one sub- modulated laser beam of holographic encoding data injects the second picture in second space optical modulator after the injection of the first pixel
In element, and modulated by the second sub- holographic encoding data, so that the laser beam that the second pixel is sent can be respectively by
One sub- holographic encoding data and the second sub- holographic encoding data are modulated, since the first sub- holographic encoding data and the second son are holographic
Coded data has formed complete holographic encoding data, and holographic encoding data are to utilize hologram three-dimensional image information to be shown
Generated, i.e., holographic encoding data carry complete hologram three-dimensional image information to be shown, so that the second pixel
The laser beam sent carries complete hologram three-dimensional image information to be shown, so that the laser beam can be used in shape
Into holographic three-dimensional image information, therefore, when user wears peep-proof glasses, holographic display system provided by the present invention can be
User provides hologram three-dimensional image information, and other personnel do not wear peep-proof glasses, cause these personnel to obtain first
The laser beam that pixel is sent, since the laser beam that the first pixel is sent only is modulated by the first sub- holographic encoding data, from
And make it that the laser beam that is sent of the first pixel only carries the hologram three-dimensional image information to be shown of part, causes the laser
Beam can not be used to form hologram three-dimensional image information, so as to prevent other staff from obtaining the hologram three-dimensional image information,
It ensure that the safety of user information.
Present invention also offers a kind of holographic display methods, which is used for holographic display system, described complete
Breath display system includes display device and peep-proof glasses, and the display device includes multiple first pixels, the peep-proof glasses bag
Include multiple second pixels；The holography display methods includes：Holographic encoding is generated according to hologram three-dimensional image information to be shown
Data, and the holographic encoding data are divided into the sub- holographic encoding data of synchronous first and the second sub- holographic encoding data；To
Each first pixel provides laser beam, according to the described first sub- holographic encoding data to being incident to each first pixel
Laser beam be modulated；According to the described second sub- holographic encoding data to through each first pixel be incident to it is each described in
The laser beam of second pixel is modulated, to form hologram three-dimensional image information.
Since holographic display methods provided by the present invention includes above step, when laser beam injects display device
Each first pixel after, can be modulated by the first sub- holographic encoding data, it is modulated by the first sub- holographic encoding data
Laser beam is injected in the second pixel in peep-proof glasses, and adjusted by the second sub- holographic encoding data after the injection of the first pixel
System, so that the laser beam that the second pixel is sent can be respectively by the first sub- holographic encoding data and the second sub- holographic encoding
Data are modulated, since the first sub- holographic encoding data and the second sub- holographic encoding data constitute complete holographic encoding number
According to, and holographic encoding data are generated using hologram three-dimensional image information to be shown, i.e. holographic encoding data carry
Complete hologram three-dimensional image information to be shown, completely waits to show so that the laser beam that the second pixel is sent carries
The hologram three-dimensional image information shown, so that the laser beam can be used in forming hologram three-dimensional image information, therefore, works as user
When wearing peep-proof glasses, holography display methods provided by the present invention can provide hologram three-dimensional image information to the user, and its
Its personnel does not wear peep-proof glasses, causes these personnel to obtain the laser beam that the first pixel is sent, due to the first picture
The laser beam that element is sent only is modulated by the first sub- holographic encoding data, so that the laser beam that the first pixel is sent is only
The hologram three-dimensional image information to be shown of part is carried, causes the laser beam to be used to form hologram three-dimensional image letter
Breath, so as to prevent other staff from obtaining the hologram three-dimensional image information, ensure that the safety of user information.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, embodiment will be described below
Needed in attached drawing be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the light path schematic diagram of the holographic display system in the embodiment of the present invention one；
Fig. 2 is the structure diagram of the first spatial light modulator in the embodiment of the present invention one；
Fig. 3 is the structure diagram of the second space optical modulator in the embodiment of the present invention one；
Fig. 4 is the structure diagram of the holographic display system in the embodiment of the present invention one；
Fig. 5 is the structure diagram of the first spatial light modulator in the embodiment of the present invention two；
Fig. 6 is the structure diagram of the second space optical modulator in the embodiment of the present invention two；
Fig. 7 is the flow chart of the holographic display methods in the embodiment of the present invention three.
Description of reference numerals：
1- display devices；2- peep-proof glasses；3- backlights；
31- lasers；32- beam expanding lens；4- lens groups；
The first spatial light modulators of 5-；The first pixels of 51-；6- data processors；
61- holographic data makers；62- data synchronizing units；7- second space optical modulators；
The second pixels of 71-；8- first substrates；9- second substrates；
The first liquid crystal layers of 10-；The first pixel electrodes of 11-；The first public electrodes of 12-；
The first drivers of 13-；The 3rd substrates of 14-；15- tetrabasals；
The second liquid crystal layers of 16-；The second pixel electrodes of 17-；The second public electrodes of 18-；
The first polaroids of 19-；The second polaroids of 20-；The second drivers of 21-；
The 5th substrates of 22-；The 6th substrates of 23-；The 3rd liquid crystal layers of 24-；
The 3rd pixel electrodes of 25-；The 3rd public electrodes of 26-；The 3rd polaroids of 27-；
The 3rd drivers of 28-；The 7th substrates of 29-；The 8th substrates of 30-；
The 4th liquid crystal layers of 31-；The 4th pixel electrodes of 32-；The 4th public electrodes of 33-；
The 4th polaroids of 34-；35- fourth drives；36- position sensors；
37- signal receivers；38- calculators；39- controllers.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is part of the embodiment of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained without making creative work
Example, belongs to the scope of protection of the invention.
Embodiment one
An embodiment of the present invention provides a kind of holographic display system, filled as shown in Figure 1, the holographic display system includes display
1 and peep-proof glasses 2 are put, which is used cooperatively with display device 1.
Wherein, display device 1 includes backlight 3,6 and first spatial light modulator 5 of data processor.Backlight 3 is used to produce
Laser beam.Data processor 6 is used to generate holographic encoding data according to hologram three-dimensional image information to be shown, and holography is compiled
Code data are divided into the sub- holographic encoding data of synchronous first and the second sub- holographic encoding data.First spatial light modulator 5 and number
It is connected according to processor 6, the first spatial light modulator 5 includes multiple first pixels 51, and the first spatial light modulator 5 is for according to the
One sub- holographic encoding data, are modulated the laser beam for being incident to each first pixel 51.
Peep-proof glasses 2 include second space optical modulator 7, and second space optical modulator 7 is connected with data processor 6,
When user wears the observation display device 1 of peep-proof glasses 2, incidence surface the first space light modulation of direction of second space optical modulator 7
The light-emitting surface of device 5；Second space optical modulator 7 includes multiple second pixels 71, and second space optical modulator 7 is used for according to second
Sub- holographic encoding data, are modulated the laser beam for being incident to each second pixel 71.
Since the holographic display system that the embodiment of the present invention is provided includes structure as above, sent by backlight 3
Laser beam inject each first pixel 51 in the first spatial light modulator 5 after, can be adjusted by the first sub- holographic encoding data
System, after the first sub- modulated laser beam of holographic encoding data is from the injection of the first pixel 51, injects second space light modulation
In the second pixel 71 in device 7, and modulated by the second sub- holographic encoding data so that the second pixel 71 sent swash
Light beam can be modulated by the first sub- holographic encoding data and the second sub- holographic encoding data respectively, due to the first sub- holographic encoding
Data and the second sub- holographic encoding data constitute complete holographic encoding data, and holographic encoding data are using to be shown
Hologram three-dimensional image information is generated, i.e., holographic encoding data carry complete hologram three-dimensional image information to be shown,
So that the laser beam that the second pixel 71 is sent carries complete hologram three-dimensional image information to be shown, so that
The laser beam can be used in forming hologram three-dimensional image information, therefore, when user wears peep-proof glasses 2, the embodiment of the present invention
The holographic display system provided can provide hologram three-dimensional image information to the user, and other personnel do not wear peep-proof glasses
2, cause these personnel to obtain the laser beam that the first pixel 51 is sent, the laser beam sent by the first pixel 51
Modulated by the first sub- holographic encoding data, wait to show so that the laser beam that the first pixel 51 is sent only carries part
The hologram three-dimensional image information shown, causes the laser beam to be used to form hologram three-dimensional image information, so as to prevent
Other staff obtain the hologram three-dimensional image information, ensure that the safety of user information.
It should be noted that in the present embodiment, multiple first pixels 51 and second included by the first spatial light modulator 5
Multiple second pixels 71 included by spatial light modulator 7 preferably correspond, that is to say, that multiple first pixels 51 with it is more
The quantity of a second pixel 71 is equal, and position is corresponding, in order to which the laser beam being emitted from the first pixel 51 can be incident to
In corresponding second pixel 71.
In addition, it is used to modulate a certain laser beam in the present embodiment, can make up the first son of complete holographic encoding data
Holographic encoding data and the second sub- holographic encoding data are preferably synchronous the first sub- holographic encoding data and the holographic volume of the second son
Code data.
In addition, second space optical modulator 7 can be arranged in the right eye frame of peep-proof glasses 2, for use as peep-proof glasses 2
Right eye eyeglass.Certainly, second space optical modulator 7 is can also be arranged in the left eye frame of peep-proof glasses 2, for use as anti-
Peep the left eyeglass lens of glasses 2.Carried out in Fig. 1 exemplified by the right eye frame that second space optical modulator 7 is arranged on peep-proof glasses 2
Explanation.
In the present embodiment, the information content and the second sub- holographic encoding data entrained by the first sub- holographic encoding data are taken
The information content of band can specifically include following two situations：Situation one, the first sub- holographic encoding data carry phase information,
Second sub- holographic encoding data carry amplitude information；Situation two, the first sub- holographic encoding data carry amplitude information, and second
Sub- holographic encoding data carry phase information.
When the first sub- holographic encoding data carry phase information, the second sub- holographic encoding data carry amplitude information
When, as shown in Fig. 2, the first spatial light modulator 5 includes the first substrate 8 and second substrate 9 being oppositely arranged, 8 He of first substrate
Be provided with the first liquid crystal layer 10 between second substrate 9, first substrate 8 backwards to the side of second substrate 9 or second substrate 9 backwards
The side of first substrate 8 is the incident side of the first spatial light modulator 5；First substrate 8 is towards being provided with the face of second substrate 9
Multiple first pixel electrodes 11, the first pixel electrode 11 are corresponded with the first pixel 51, and second substrate 9 is towards first substrate 8
Face on be provided with the first public electrode 12.
When the first spatial light modulator 5 work with said structure, the first pixel electrode 11 and first can be passed through
The size V of the electric field formed between public electrode 12 controls the deflection of the liquid crystal molecule in the first pixel 51, so that liquid crystal
The angle theta that the wave vector direction of laser beam of the director orientation of molecule with being incident to the first pixel 51 is formed changes, i.e. θ
=σ (V).Further, from the electro-optic birefringent effect of liquid crystal molecule, the laser beam of the first pixel 51 is incident to by the
Amount of phase modulation δ after one pixel 51 changes with the change of θ, i.e. δ=φ (θ)=φ [σ (V)], you can is adjusted with passing through
The size V of the electric field formed between first pixel electrode 11 and the first public electrode 12, the first pixel 51 is incident to control
Amount of phase modulation δ of the laser beam after the first pixel 51, since the first pixel electrode 11 and the first pixel 51 correspond,
So that being incident to the phase of the laser beam of each first pixel 51 can independently be modulated.
Further, as shown in Fig. 2, the first spatial light modulator 5 further includes the first driver 13, data processor 6,
One public electrode 12 and each first pixel electrode 11 are connected with the first driver 13 respectively, and the first driver 13 is used for basis and takes
The first sub- holographic encoding data with phase information, control institute between the first public electrode 12 and each first pixel electrode 11
The size of the electric field of formation, so as to realize the carry phase information first sub- holographic encoding data to being incident to each
The modulation of the phase of the laser beam of one pixel 51.
In addition, as shown in figure 3, second space optical modulator 7 includes the 3rd substrate 14 and tetrabasal 15 that are oppositely arranged,
Be provided with the second liquid crystal layer 16 between 3rd substrate 14 and tetrabasal 15, the 3rd substrate 14 backwards to the side of tetrabasal 15 or
Incident side of the person's tetrabasal 15 backwards to the side of the 3rd substrate 14 for second space optical modulator 7；3rd substrate 14 is towards
Multiple second pixel electrodes 17 are provided with the face of tetrabasal 15, the second pixel electrode 17 is corresponded with the second pixel 71, the
Tetrabasal 15 is towards being provided with the second public electrode 18 on the face of the 3rd substrate 14；3rd substrate 14 is backwards to the face of tetrabasal 15
On be provided with the first polaroid 19, tetrabasal 15 is provided with the second polaroid 20 on the face of the 3rd substrate 14.Need
It is bright, if the 3rd substrate 14 is the incident side of second space optical modulator 7 backwards to the side of tetrabasal 15, it is incident to the
The laser beam of two pixels 71 is injected from the first polaroid 19, and is projected from the second polaroid 20；If tetrabasal 15 is backwards to the 3rd
The side of substrate 14 is the incident side of second space optical modulator 7, then is incident to the laser beam of the second pixel 71 from the second polarisation
Piece 20 is injected, and is projected from the first polaroid 19.The embodiment of the present invention is inclined from first to be incident to the laser beam of the second pixel 71
Mating plate 19 is injected, and is illustrated exemplified by the injection of the second polaroid 20.
When the second space optical modulator 7 with said structure works, the laser beam for being incident to the second pixel 71 passes through
Linearly polarized light is formed after first polaroid 19, from the twisted effect of liquid crystal molecule, which passes through the second liquid crystal layer
When 16, the polarization direction of the linearly polarized light is consistent with the long axis direction of liquid crystal molecule all the time.It is possible to further pass through the second picture
The deflection of liquid crystal molecule in the second pixel of electric field controls 71 that plain 17 and second public electrode 18 of electrode is formed, so that liquid
The orientation of the major axis of brilliant molecule changes, and therefore, can pass through 18 institute of the second pixel electrode 17 and the second public electrode
The electric field of formation, when controlling above-mentioned the second polaroid 20 of linearly polarized light arrival, the polarization direction of the linearly polarized light and the second polarisation
Angle between the direction of the light transmission shaft of piece 20, and then can realize the control of the light intensity of the laser beam sent to the second pixel 71
System, since the second pixel electrode 17 and the second pixel 71 correspond, so that being incident to the laser of each second pixel 71
The light intensity of beam can be modulated independently.
Further, as shown in figure 3, second space optical modulator 7 further includes the second driver 21, data processor 6,
Two public electrodes 18 and each second pixel electrode 17 are connected with the second driver 21 respectively, and the second driver 21 is used for basis and takes
The second sub- holographic encoding data with amplitude information, control institute between the second public electrode 18 and each second pixel electrode 17
The size of the electric field of formation, so as to realize the carry amplitude information second sub- holographic encoding data to being incident to the second picture
The modulation of the light intensity of the laser beam of element 71.
It should be noted that the concrete structure of the first spatial light modulator 5 and the concrete structure of second space optical modulator 7
The above is not limited to, those skilled in the art can be reasonably selected according to actual needs.
In addition, as shown in Figure 1, backlight 3 can include laser 31 and be arranged on the beam expanding lens of the light emission side of laser 31
32, the diameter of laser beam and the angle of divergence so as to be sent by beam expanding lens 32 to laser 31 are modulated, Jin Erke
So that backlight 3, which can be the first spatial light modulator 5, provides uniform laser beam, the display of holographic display system is helped to improve
Effect.Exemplarily, laser 31 can be in gas laser, solid state laser, semiconductor laser and fuel laser
One kind.
Further, the holographic display system that the embodiment of the present invention is provided can have following two different Working moulds
Formula：Operating mode one, the color for the laser beam that laser 31 is sent in a frame time of display device 1 is constant, this
Under operating mode, user can only observe a kind of hologram three-dimensional image information of color in a frame time of display device 1.Example
Such as, when the color of the laser beam sent when laser 31 in a frame time of display device 1 is blueness, user fills in display
The hologram three-dimensional image information of blueness can only be observed by putting in 1 frame time.Operating mode two a, during frame of display device 1
Between include three periods, within each period, the color of the laser beam that laser 31 is sent is red, green and blueness
In one kind, and within any two period, the color for the laser beam that laser 31 is sent is different.In this operating mode
Under, user can obtain the hologram three-dimensional image information of three kinds of different colours in a frame time of display device 1, due to human eye
There are visual persistence phenomenon so that user can close in the brain according to the hologram three-dimensional image information of above-mentioned three kinds of different colours
Into colored hologram three-dimensional image information.
In addition, as shown in figure 4, peep-proof glasses 2 may also include position sensor 36, position sensor 36 is used to detect second
Spatial light modulator 7 relative to the first spatial light modulator 5 locus coordinate.Signal is may also include in display device 1 to connect
Receive device 37, calculator 38, controller 39 and lens group 4, the connection relation between them is signal receiver 37, calculator 38,
Controller 39 and lens group 4 are sequentially connected, in addition, signal receiver 37 is also connected with position sensor 36, lens group 4 is arranged at
Backlight 3 goes out on light path (referring to Fig. 1), the propagation for the laser beam that each lens in lens group 4 are preferably sent along backlight 3
Direction arranges；Wherein, the locus coordinate that calculator 38 is used to be received according to signal receiver 37 is calculated, and is exported
Result of calculation；Controller 39 is used to control lens group 4 according to result of calculation, so that the laser beam that the first pixel 51 is sent is incident
Into corresponding second pixel 71；The laser beam that lens group 4 is used to sent the first pixel 51 is incident to the second pixel 71
In, it is necessary to which explanation, lens group 4 can be arranged on the incident side (as shown in Figure 1) of the first spatial light modulator 5, lens group 4
The light emission side of the first spatial light modulator 5 can also be arranged on.
When the head movement of user, the position for the peep-proof glasses 2 being worn on user can also be moved, so that
Second space optical modulator 7 changes relative to the position of the first spatial light modulator 5, and at this time, position sensor 36 can be with
Detect locus coordinate of the second space optical modulator 7 relative to the first spatial light modulator 5, and the locus is sat
Mark is transmitted to signal receiver 37, based on calculator 38 is carried out by the locus coordinate received according to signal receiver 37
Calculate, and export result of calculation, controller 39 controls lens group 4, the laser for being sent the first pixel 51 according to the result of calculation
Beam can be incident in corresponding second pixel 71 all the time, therefore, even if there occurs movement, holography display system on the head of user
System can also provide hologram three-dimensional image information to the user.
Further, the inventors of the present application found that when second space optical modulator 7 is relative to the first spatial light modulator
When 5 position changes, the laser beam sent from the first pixel 51 is incident to the light path passed through required for the second pixel 71
Difference can also change so that be incident to the phase of the laser beam of the second pixel 71 there are certain deviation, cause holographic display
The hologram three-dimensional image information that system is provided by user is not accurate enough.To avoid the problem, as shown in fig. 6, calculator 38 is also
It is connected with data processor 6, the result of calculation that data processor 6 can also be exported according to calculator 38, it is holographic to the second son
Coded data carries out phase compensation.
In addition, the concrete structure of data processor 6 can have it is a variety of, those skilled in the art can according to be actually needed into
Row selection.Exemplarily, as shown in fig. 6, data processor 6 includes holographic data maker 61 and data synchronizing unit 62, wherein,
Holographic data maker 61 is used to generate holographic encoding data according to hologram three-dimensional image information to be shown, and by holographic encoding
Data are divided into the first sub- holographic encoding data and the second sub- holographic encoding data；Data synchronizing unit 62 is generated with holographic data respectively
Device 61, the first spatial light modulator 5 and second space optical modulator 7 connect, for the first sub- holographic encoding data and second
Sub- holographic encoding data synchronize processing.
Embodiment two
An embodiment of the present invention provides a kind of holographic display system, which is provided complete with embodiment one
It is similar to cease the structure of display system, the difference is that in the holographic display system that the present embodiment is provided, the first sub- holographic encoding
Data carry amplitude information, the second sub- holographic encoding data carry phase information, corresponding such case, as shown in figure 5, this
First spatial light modulator 5 of the display device of the holographic display system in embodiment includes 22 He of the 5th substrate being oppositely arranged
6th substrate 23, the 5th substrate 22 are arranged on the incident side of the first spatial light modulator 5, the 5th substrate 22 and the 6th substrate 23 it
Between be provided with the 3rd liquid crystal layer 24, the 5th substrate 22 is provided with the 3rd polaroid 27, the 5th base on the face of the 6th substrate 23
Plate 22 is towards being provided with multiple 3rd pixel electrodes 25, the 3rd pixel electrode 25 and the first pixel 51 1 on the face of the 6th substrate 23
One corresponds to, and the 6th substrate 23 is towards being provided with the 3rd public electrode 26 on the face of the 5th substrate 22.When with said structure
When one spatial light modulator 5 works, the laser beam for being incident to the first pixel 51 forms linearly polarized light after the 3rd polaroid 27,
The polarization direction of the linearly polarized light can be controlled by the electric field formed between the 3rd pixel electrode 25 and the 3rd public electrode 26
System, since the 3rd pixel electrode 25 and the first pixel 51 correspond, so that being incident to the laser of each first pixel 51
The polarization direction of beam can independently be modulated.
Further, as shown in figure 5, the first spatial light modulator 5 further includes the 3rd driver 28, the 3rd driver 28 divides
It is not connected with data processor 6, the 3rd public electrode 26 and each 3rd pixel electrode 25, amplitude information is carried for basis
The first sub- holographic encoding data, control the electric field that is formed between the 3rd public electrode 26 and each 3rd pixel electrode 25
Size, so as to realize the carry amplitude information first sub- holographic encoding data to being incident to swashing for each first pixel 51
The modulation of the polarization direction of light beam.
In addition, the as shown in fig. 6, second space optical modulator 7 of the peep-proof glasses of holographic display system in the present embodiment
Including the 7th substrate 29 being oppositely arranged and the 8th substrate 30, what the 7th substrate 29 was arranged on second space optical modulator 7 enters light
Side, is provided with the 4th liquid crystal layer 31, the 7th substrate 29 is backwards to the face of the 8th substrate 30 between the 7th substrate 29 and the 8th substrate 30
On be provided with the 4th polaroid 34, the 7th substrate 29 towards being provided with multiple 4th pixel electrodes 32 on the face of the 8th substrate 30,
4th pixel electrode 32 is corresponded with the second pixel 71, and the 8th substrate 30 is public towards being provided with the 4th on the face of the 7th substrate 29
Common electrode 33.
When the second space optical modulator 7 with said structure works, analyzed more than, be incident to the first pixel
51 laser beam forms linearly polarized light after the 3rd polaroid 27, so that the laser beam that the first pixel 51 is sent is line
Polarised light, the laser beam sent by being incident to the laser beam of the second pixel 71 for the first pixel 51 corresponding thereto, from
And the laser beam for be incident to the second pixel 71 is also linearly polarized light, and due to the 3rd pixel electrode 25 and the 3rd common electrical
The electric field formed between pole 26 can control the polarization direction of the linearly polarized light, so as to control the polarization of the linearly polarized light
The angle that the direction of the light transmission shaft of direction and the 4th polaroid 34 is formed, and then can be to being incident to the laser of the second pixel 71
The light intensity of beam is modulated.It is possible to further the electric field formed by the 4th pixel electrode 32 and the 4th public electrode 33,
Control is incident to the amount of phase modulation of the laser beam of the second pixel 71 after the second pixel 71, due to the 4th pixel electrode 32 with
Second pixel 71 corresponds, so that being incident to the phase of the laser beam of each second pixel 71 can independently be adjusted
System.
Further, as shown in fig. 6, second space optical modulator 7 further includes fourth drive 35, fourth drive 35 is divided
It is not connected with data processor 6, the 4th public electrode 33 and each 4th pixel electrode 32, phase information is carried for basis
The second sub- holographic encoding data, control the electric field that is formed between the 4th public electrode 33 and each 4th pixel electrode 32
Size, so as to realize the carry phase information second sub- holographic encoding data to being incident to swashing for each second pixel 71
The modulation of the phase of light beam.
It should be noted that the concrete structure of the first spatial light modulator 5 and the concrete structure of second space optical modulator 7
The above is not limited to, those skilled in the art can be reasonably selected according to actual needs.
Embodiment three
An embodiment of the present invention provides a kind of holographic display methods, which is used for holographic display system.Institute
Stating holographic display system includes display device and peep-proof glasses, and the display device includes multiple first pixels, the peep-proof eye
Mirror includes multiple second pixels.As shown in fig. 7, the holography display methods comprises the following steps：
Step S101：Holographic encoding data are generated according to hologram three-dimensional image information to be shown, and the holography is compiled
Code data are divided into the sub- holographic encoding data of synchronous first and the second sub- holographic encoding data
Step S102：Laser beam is provided to each first pixel, according to the described first sub- holographic encoding data to entering
The laser beam for being incident upon each first pixel is modulated.
Step S103：According to the described second sub- holographic encoding data to through each first pixel be incident to it is each described in
The laser beam of second pixel is modulated, to form hologram three-dimensional image information.
Since the holographic display methods that the embodiment of the present invention is provided includes above step, inject and show when laser beam
After each first pixel 51 of showing device, it can be modulated by the first sub- holographic encoding data, by the first sub- holographic encoding data
Modulated laser beam is injected in the second pixel 71 of peep-proof glasses after the injection of the first pixel 51, and by the holographic volume of the second son
Code data are modulated, so that the laser beam that is sent of the second pixel 71 can be respectively by the first sub- holographic encoding data and the
Two sub- holographic encoding data are modulated, since the first sub- holographic encoding data and the second sub- holographic encoding data constitute completely
Holographic encoding data, and holographic encoding data are generated using hologram three-dimensional image information to be shown, i.e. holographic encoding
Data carry complete hologram three-dimensional image information to be shown, so that the laser beam that the second pixel 71 is sent carries
Complete hologram three-dimensional image information to be shown, so that the laser beam can be used in forming hologram three-dimensional image letter
Breath, therefore, when user wears peep-proof glasses 2, the holographic display system that the embodiment of the present invention is provided can provide to the user
Hologram three-dimensional image information, and other personnel do not wear peep-proof glasses 2, cause these personnel to obtain 51 institute of the first pixel
The laser beam sent, since the laser beam that the first pixel 51 is sent only is modulated by the first sub- holographic encoding data, so that
The hologram three-dimensional image information to be shown that the laser beam that the first pixel 51 is sent only carries part is obtained, causes the laser beam
It can not be used to form hologram three-dimensional image information, so as to prevent other staff from obtaining the hologram three-dimensional image information, protect
The safety of user information is demonstrate,proved.
Above-mentioned holography display methods can be applied particularly to the holographic display system as described in embodiment one and embodiment two.When
It is above-mentioned with reference to Fig. 1 when above-mentioned holography display methods is applied in the holographic display system as described in embodiment one and embodiment two
Each step of holographic display methods is specially：
Step S101：The data processor 6 of holographic display system generates complete according to hologram three-dimensional image information to be shown
Coded data is ceased, and holographic encoding data are divided into the sub- holographic encoding data of synchronous first and the second sub- holographic encoding data.
Step S102：The first spatial light modulator 5 from the backlight 3 of holographic display system to holographic display system each
One pixel 51 provides laser beam, and the first spatial light modulator 5 is according to the first sub- holographic encoding data to being incident to each first picture
The laser beam of element 51 is modulated.
Step S103：The second space optical modulator 7 of holographic display system is according to the second sub- holographic encoding data to incidence
Laser beam to each second pixel 71 of second space optical modulator 7 is modulated, to form hologram three-dimensional image information.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (17)
1. a kind of holographic display system, it is characterised in that including display device and peep-proof glasses；Wherein,
The display device includes：Backlight, the backlight are used to produce laser beam；Data processor, the data processor are used
In generating holographic encoding data according to hologram three-dimensional image information to be shown, and the holographic encoding data are divided into the first son
Holographic encoding data and the second sub- holographic encoding data；The first spatial light modulator being connected with the data processor, it is described
First spatial light modulator includes multiple first pixels, and first spatial light modulator is used to compile according to the described first son is holographic
Code data, are modulated the laser beam for being incident to each first pixel；
The peep-proof glasses include：Second space optical modulator, the second space optical modulator connect with the data processor
Connect, the incidence surface of the second space optical modulator is towards the light-emitting surface of first spatial light modulator, the second space
Optical modulator includes multiple second pixels, and the second space optical modulator is used for according to the described second sub- holographic encoding data,
The laser beam for being incident to each second pixel is modulated.
2. holographic display system according to claim 1, it is characterised in that included by first spatial light modulator
Multiple first pixels are corresponded with multiple second pixels included by the second space optical modulator.
3. holographic display system according to claim 1 or 2, it is characterised in that the first sub- holographic encoding data are taken
Amplitude information is carried with phase information, the second sub- holographic encoding data, first spatial light modulator includes phase
To the first substrate and second substrate of setting, the first liquid crystal layer, institute are provided between the first substrate and the second substrate
It is described backwards to the side of the first substrate that first substrate, which is stated, backwards to the side of the second substrate or the second substrate
The incident side of first spatial light modulator；The first substrate is towards being provided with multiple first pixels on the face of the second substrate
Electrode, first pixel electrode and first pixel correspond, and the second substrate is towards the face of the first substrate
On be provided with the first public electrode.
4. holographic display system according to claim 3, it is characterised in that first spatial light modulator further includes
One driver, the data processor, first public electrode and each first pixel electrode are respectively with described first
Driver connects, and first driver is used for according to the described first sub- holographic encoding data for carrying the phase information,
Control the size of the electric field formed between first public electrode and each first pixel electrode.
5. holographic display system according to claim 3, it is characterised in that the second space optical modulator includes opposite
The 3rd substrate and tetrabasal set, the second liquid crystal layer is provided between the 3rd substrate and the tetrabasal, described
3rd substrate is described the backwards to the side of the 3rd substrate backwards to the side of the tetrabasal or the tetrabasal
The incident side of two spatial light modulators；3rd substrate is towards being provided with multiple second pixels electricity on the face of the tetrabasal
Pole, second pixel electrode and second pixel correspond, and the tetrabasal is towards on the face of the 3rd substrate
It is provided with the second public electrode；3rd substrate is provided with the first polaroid on the face of the tetrabasal, and described
Tetrabasal is provided with the second polaroid on the face of the 3rd substrate.
6. holographic display system according to claim 5, it is characterised in that the second space optical modulator further includes
Two drivers, the data processor, second public electrode and each second pixel electrode are respectively with described second
Driver connects, and second driver is used for according to the described second sub- holographic encoding data for carrying the amplitude information,
Control the size of the electric field formed between second public electrode and each second pixel electrode.
7. holographic display system according to claim 1 or 2, it is characterised in that the first sub- holographic encoding data are taken
Phase information is carried with amplitude information, the second sub- holographic encoding data, first spatial light modulator includes phase
To the 5th substrate of setting and the 6th substrate, the 5th substrate is arranged on the incident side of first spatial light modulator, institute
State and the 3rd liquid crystal layer is provided between the 5th substrate and the 6th substrate, the 5th substrate is backwards to the face of the 6th substrate
On be provided with the 3rd polaroid, the 5th substrate towards being provided with multiple 3rd pixel electrodes on the face of the 6th substrate,
3rd pixel electrode and first pixel correspond, and the 6th substrate is towards setting on the face of the 5th substrate
There is the 3rd public electrode.
8. holographic display system according to claim 7, it is characterised in that first spatial light modulator further includes
Three drivers, the data processor, the 3rd public electrode and each 3rd pixel electrode are respectively with the described 3rd
Driver connects, and the 3rd driver is used for according to the described first sub- holographic encoding data for carrying the amplitude information,
Control the size of the electric field formed between the 3rd public electrode and each 3rd pixel electrode.
9. holographic display system according to claim 7, it is characterised in that the second space optical modulator includes opposite
The 7th substrate and the 8th substrate set, the 7th substrate is arranged on the incident side of the second space optical modulator, described
The 4th liquid crystal layer is provided between 7th substrate and the 8th substrate, the 7th substrate is on the face of the 8th substrate
It is provided with the 4th polaroid, the 7th substrate is towards being provided with multiple 4th pixel electrodes on the face of the 8th substrate, institute
State the 4th pixel electrode and second pixel to correspond, the 8th substrate is towards being provided with the face of the 7th substrate
4th public electrode.
10. holographic display system according to claim 9, it is characterised in that the second space optical modulator further includes
Fourth drive, the data processor, the 4th public electrode and each 4th pixel electrode are respectively with described
Four drivers connect, and the fourth drive is used for according to the described second sub- holographic encoding number for carrying the phase information
According to the size of the electric field formed between control the 4th public electrode and each 4th pixel electrode.
11. holographic display system according to claim 1 or 2, it is characterised in that the backlight includes laser and setting
In the beam expanding lens of the light emission side of the laser.
12. holographic display system according to claim 11, it is characterised in that the laser is in the display device
The color of the laser beam sent in one frame time is constant.
13. holographic display system according to claim 11 a, it is characterised in that frame time of the display device includes
Three periods, within each period, the color for the laser beam that the laser is sent is red, green and blueness
In one kind, and within the period described in any two, the color for the laser beam that the laser is sent is different.
14. holographic display system according to claim 1 or 2, it is characterised in that the peep-proof glasses further include position biography
Sensor, the position sensor are used to detect sky of the second space optical modulator relative to first spatial light modulator
Between position coordinates；
Further include signal receiver, calculator, controller and lens group in the display device, it is the signal receiver, described
Calculator, the controller and the lens group are sequentially connected, and the signal receiver is also connected with the position sensor, institute
State lens group and be arranged at the going out on light path of the backlight；The calculator is used for the institute received according to the signal receiver
State locus coordinate to be calculated, and export result of calculation；The controller is used for according to result of calculation control
Lens group, so that the laser beam that first pixel is sent is incident in second pixel.
15. holographic display system according to claim 14, it is characterised in that the calculator also with the data processing
Device connects, and the data processor is additionally operable to according to the result of calculation, and phase is carried out to the described second sub- holographic encoding data
Compensation.
16. holographic display system according to claim 1 or 2, it is characterised in that the data processor includes holographic number
According to maker and data synchronizing unit, wherein,
The holographic data maker is used to generate the holographic encoding number according to the hologram three-dimensional image information to be shown
According to, and the holographic encoding data are divided into the described first sub- holographic encoding data and the second sub- holographic encoding data；
The holographic data maker, first spatial light modulator and the second space optical modulator respectively with the number
Connected according to synchronizer, the data synchronizing unit is used for the described first sub- holographic encoding data and the second sub- holographic encoding number
Handled according to synchronizing.
17. a kind of holography display methods, it is characterised in that the holography display methods is used for holographic display system, the holography
Display system includes display device and peep-proof glasses, and the display device includes backlight, data processor, the first space light modulation
Device and multiple first pixels, the peep-proof glasses include second space optical modulator and multiple second pixels；The holographic display
Method includes：
The data processor generates holographic encoding data according to hologram three-dimensional image information to be shown, and the holography is compiled
Code data are divided into the sub- holographic encoding data of synchronous first and the second sub- holographic encoding data；
The backlight provides laser beam, first spatial light to each first pixel of first spatial light modulator
Modulator is modulated the laser beam for being incident to each first pixel according to the described first sub- holographic encoding data；
The second space optical modulator is according to the described second sub- holographic encoding data to being incident to through each first pixel
The laser beam of each second pixel is modulated, to form hologram three-dimensional image information.
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| CN106210707B (en) | 2016-09-14 | 2018-05-01 | 京东方科技集团股份有限公司 | A kind of holographic display system and holographic display methods |
| CN107462999B (en) * | 2017-08-01 | 2020-12-22 | 北京理工大学 | Color large-size three-dimensional dynamic holographic display device based on double-layer liquid crystal modulation |
| CN110303256A (en) * | 2019-07-01 | 2019-10-08 | 东莞市德普特电子有限公司 | A kind of laser special-shaped processing technology of polaroid |
| CN110426941B (en) * | 2019-08-08 | 2021-05-11 | 中国联合网络通信集团有限公司 | Peep-proof method and device for holographic projection image |
| CN115202176A (en) * | 2021-04-12 | 2022-10-18 | 京东方科技集团股份有限公司 | Display device and holographic display apparatus |
| CN113267909B (en) * | 2021-07-19 | 2021-10-08 | 军事科学院系统工程研究院网络信息研究所 | Peep-proof display method based on wave front distortion compensation |
| CN114660916A (en) * | 2022-03-16 | 2022-06-24 | 李�杰 | Multi-angle holographic image display system and method |
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| CN104395814A (en) * | 2012-04-27 | 2015-03-04 | 镭亚股份有限公司 | Directional pixel for use in a display screen |
| CN104766540A (en) * | 2014-01-03 | 2015-07-08 | 群创光电股份有限公司 | Display device |
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| KR101879717B1 (en) * | 2012-04-09 | 2018-07-18 | 엘지디스플레이 주식회사 | 3 dimensional stereography image displayable device |
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