CN103336420B - A kind of hologram display packing and device - Google Patents
A kind of hologram display packing and device Download PDFInfo
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- CN103336420B CN103336420B CN201310214103.3A CN201310214103A CN103336420B CN 103336420 B CN103336420 B CN 103336420B CN 201310214103 A CN201310214103 A CN 201310214103A CN 103336420 B CN103336420 B CN 103336420B
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Abstract
This application discloses a kind of hologram display packing and device, described method comprises: a kind of hologram display packing, described method comprises: micro mirror array obtains the holographic information of references object in T1 time range, described holographic information comprises amplitude information and phase information, and wherein said T1 is greater than 0; Holographic information described in arithmetic processor process, obtains hologram sequence, and exports described hologram sequence to a spatial light modulator; Described spatial light modulator receives the reproduction light that optical filter produces, and processes described hologram sequence, obtains hologram; Receiving screen receives and shows described hologram.Solve exist in prior art owing to decomposing distortion and the poor technical matters of the holographic effect that causes, in addition, also can the higher problem of technical solution cost.
Description
Technical field
The present invention relates to holography field, particularly a kind of hologram display packing and device.
Background technology
At present, along with the development of holographic technique, user is when watching 3D image, be not limited only to viewing 3D live-action image figure, can also watch virtual 3D striograph, virtual 3D striograph stereoscopic sensation is strong, having real visual effect, is the technology crystallization of holographic technique.Existing holographic technique, is mainly used in the picture that 3D picture, Commercial goods labels etc. are static, and holography display popular is at present the phantom produced after being merged by projection and actual scenery in fact, is not real holography.Here ' projection with outdoor scene merge ' refers to by image projection on transparent screen, merges and produce phantom after the image on transparent screen and screen or before and after the outdoor scene in front.
Certainly, because holographic technique above employs ' projection with outdoor scene merge ' such technology, the image likely projected and actual image not exclusively overlapping, there is ghost image, therefore the 3D image effect produced is poor, causing spectators when watching, seeing comparatively fuzzy 3D image.And in order to improve the display effect of 3D image, in the prior art, then the scheme of the holography display below having occurred, to realize the holography display of object.
The specific implementation process of the program is as follows:
First, the chromatic information of object is decomposed into R, G, B three primary colours information, often kind of primary colours information all has component amplitude information and depth information.
Secondly, according to depth information and the component amplitude information of often kind of primary colours information, multi-component-level facies pattern kinoform is synthesized.
Again, the kinoform composing images sequence of synthesis is delivered to SLM (spatial light modulator), and adopt the coherent light of respective color to irradiate kinoform, R, G, B component of reproducing original color 3D object.
Finally, the holographic effect of reconstructed object after merging.
In superincumbent scheme, although the reproduction of the holographic effect of object can be realized, when the chromatic information of object being decomposed into R, G, B three primary colours colouring information, in fact thoroughly can not decompose, certainly existing certain decomposition loss.Owing to there is such decomposition loss, therefore, the holographic effect that technique scheme realizes can not be satisfactory.In addition, the kinoform composing images sequence of synthesis is being delivered to SLM and adopting the coherent light of respective color to irradiate in the process of kinoform, because kinoform is by three primary colours parameter synthesis separately, when therefore stating step on the implementation, three identical SLM must be used to modulate, and three primary color laser devices must be used to send corresponding coherent light and to irradiate kinoform, like this, the technical costs of this technical scheme can be made to increase.
Summary of the invention
The invention provides a kind of hologram display packing and device, in order to solve exist in prior art owing to decomposing distortion and the poor technical matters of the holographic effect that causes, in addition, also can the higher problem of technical solution cost.
On the one hand, the present invention, by an embodiment of the application, provides following technical scheme:
A kind of hologram display packing, described method comprises: micro mirror array obtains the holographic information of references object in T1 time range, and described holographic information comprises amplitude information and phase information, and wherein said T1 is greater than 0; Holographic information described in arithmetic processor process, obtains hologram sequence, and exports described hologram sequence to a spatial light modulator; Described spatial light modulator receives the reproduction light that optical filter produces, and processes described hologram sequence, obtains hologram; Receiving screen receives and shows described hologram.
On the other hand, the present invention is provided by another embodiment of the application:
A kind of hologram display device, described device comprises micro mirror array, arithmetic processor, optical filter, a spatial light modulator and receiving screen, wherein, described micro mirror array, for obtaining the holographic information of references object in T1 time range, and send described holographic information to arithmetic processor process, described holographic information comprises amplitude information and phase information; Described optical filter, for generation of reproduction light, and exports described reproduction illumination and is incident upon described spatial light modulator; Described arithmetic processor, with described micro mirror array, described optical filter is connected with described spatial light modulator, for according to described holographic information generating hologram sequence, and exports described hologram sequence to described spatial light modulator; Described spatial light modulator, processes described hologram sequence for receiving described reproduction light, obtains hologram, and transmits described hologram to described receiving screen.
One or more technical schemes in technique scheme, have following technique effect or advantage:
In one or more technical scheme of the application, first, the holographic information of references object is obtained by micro mirror array, here holographic information is the holographic information of the references object that micro mirror array directly obtains, and the chromatic information of object need not be decomposed, therefore can not have the risk of distortion.Then, by arithmetic processor process holographic information, obtain hologram sequence.Hologram sequence herein, arranges according to time sequencing, therefore, when hologram sequence being exported by arithmetic processor, only needs a spatial light modulator.In addition, the optical filter of the embodiment of the present application does not use laser, but uses reproduction light, and can produce different reproduction light, to irradiate hologram sequence according to the hologram sequence transmitted.To sum up, the scheme that the embodiment of the present application and prior art adopt is different, and the application directly obtains the holographic information of references object, need not decompose, avoid the risk of decomposing distortion, and, the application only used a spatial light modulator, has greatly saved technical costs.
Accompanying drawing explanation
Fig. 1 is the specific implementation process figure of hologram display packing in the embodiment of the present application;
Fig. 2 is the concrete schematic diagram of micro mirror array in the embodiment of the present application;
Fig. 3 be in the embodiment of the present application micro mirror array when gathering the holographic information of references object, at the schematic diagram of the different wave front of two two of not formed in the same time;
Fig. 4 is the schematic diagram of the field point that in the embodiment of the present application, references object is produced by different micro mirrors;
Fig. 5 is the schematic diagram of the load mode that in the embodiment of the present application, hologram is concrete;
Fig. 6 is the concrete structure schematic diagram of optical filter in the embodiment of the present application;
Fig. 7 is that the embodiment of the present application spatial light modulator receives the specific implementation process figure reappearing light and modulate hologram.
Embodiment
Complicated in order to solve the technical process existed in prior art, the device used is more, causes cost higher, and has the technical matters of distortion to a certain degree, the embodiment of the present invention proposes a kind of hologram display packing and device, and its solution general thought is as follows:
The invention provides a kind of hologram display packing and device, in method implementation process, first, obtain the holographic information of references object in T1 time range by micro mirror array, holographic information comprises amplitude information and phase information, and wherein T1 is greater than 0; Then, arithmetic processor process holographic information, obtains hologram sequence, and exports hologram sequence to a spatial light modulator; Secondly, spatial light modulator receives the reproduction light that optical filter produces, and processes hologram sequence, obtains hologram; Finally, receiving screen receives and display holography image.
Below by accompanying drawing and specific embodiment, technical solution of the present invention is described in detail, the specific features being to be understood that in the embodiment of the present invention and embodiment is the detailed description to technical solution of the present invention, instead of the restriction to technical solution of the present invention, when not conflicting, the technical characteristic in the embodiment of the present invention and embodiment can combine mutually.
Embodiment one:
In the embodiment of the present application, have employed a kind of hologram display packing, compare with the reconstruction of hologram technology of prior art, the scheme of enforcement is comparatively simple, and uses device less, and the cost that hinge structure expends, the cost that this programme expends is lower.
At this, what the application made brief of the introduction holographic technique realizes principle.
Its first step utilizes principle of interference record object light-wave information, and this i.e. shooting process: subject forms the object beam of diffuse type under laser irradiation; Another part laser is as being mapped on holofilm with reference to light beam, produce with object beam superposition and interfere, the position phase of each point on object light wave and amplitude are converted to the intensity spatially changed, thus utilizes the contrast between interference fringe and interval to be recorded by the full detail of object light wave.The egative film that record interference fringe, after development, the handling procedure such as fixing, just becomes a hologram, or claims hologram; Its second step utilizes diffraction principle reconstructed object light-wave information, this is imaging process: the holographic grating that hologram is complicated just as, under coherent laser illumination, the sinusoidal holographic grating figure of a linear recording, the diffraction light wave of hologram generally can provide two pictures, i.e. original image (also known as initial picture) and conjugate image.The image stereoscopic sensation reproduced is strong, has real visual effect.Every part of hologram all have recorded the optical information of each point on object, therefore its every part can reproduce the whole image of the original in principle, multiple different image can also be recorded on same egative film by multiexposure, multiple exposure, and can show respectively without interfering with each other.
Further, the specific implementation process of the hologram display packing of the embodiment of the present application description then as shown in Figure 1.
S101, micro mirror array obtains the holographic information of references object in T1 time range.
Wherein, holographic information comprises amplitude information and phase information, and wherein T1 is greater than 0.
S102, arithmetic processor process holographic information, obtains hologram sequence, and exports hologram sequence to a spatial light modulator.
S103, spatial light modulator receives the reproduction light that optical filter produces, and processes hologram sequence, obtains hologram.
S104, receiving screen receives and display holography image.
Concrete, the micro mirror mentioned in the S101 in the embodiment of the present application, converts the assembly of electric signal again to after specifically gathering light-wave information by one group of optical lens.Micro mirror now also not merely represents optical lens.After micro mirror collects light-wave information, because arithmetic processor does not support light wave process, therefore, light-wave information can be converted to the electric signal that arithmetic processor can process by micro mirror.Electric signal now can reflect light-wave information completely, electric signal can be interpreted as the light-wave information of another kind of form.Micro mirror array is then the array combination of multiple micro mirror, and the light-wave information of collection is more complicated than single micro mirror a lot.
The concrete schematic diagram of micro mirror array please refer to Fig. 2, and micro mirror array is combined by multiple arrangement of micro mirrors, and when gathering the holographic information of references object, the holographic information that each micro mirror collects can be different.In the front of micro mirror array, it is the references object of square form.When references object is in the space of light, its surface can scattered beam, and these light can reflect the size of references object, shape, bright secretly etc. information.Therefore, micro mirror array then can collect these and be used for reflecting the light (i.e. light-wave information) of references object, and is converted into electric signal and sends arithmetic processor to and process.
Certainly, the structure described in more than Fig. 2 of schematic diagram of micro mirror array, namely micro mirror array is in the front of references object.Micro mirror array can also be place around references object, and in a practical situation, placement form the application of micro mirror array does not limit.
Concrete, when gathering the holographic information of references object, can gather from multi-faceted, multi-angle, adding the impact of reflected light on its light of references object surrounding scenes, the full detail of references object can be collected.Concrete, the reflected light of surrounding scenes can be embodied in amplitude information and phase information equally on the impact of object.As the background in still life sketch, background has the difference of light intensity, so reacts the difference also can on still life with light intensity, in the amplitude information that this species diversity is then embodied in still life and phase information.
Therefore, micro mirror array, when gathering the holographic information of references object, can collect the full detail of references object.
And holographic information, specifically refer to amplitude information and the phase information of object, in optics, comprise the full detail of visible ray.RGB is the primary color component in visible ray, and therefore, holographic information can comprise RGB completely.
Further, when micro mirror array gathers holographic information, gather within the regular hour, such as, gather in T1 time range, the concrete numerical value of T1 is now determined by actual conditions.
In addition, when micro mirror array gathers holographic information, what in fact adopt is the Object light wave of references object, and being in T1 time range when gathering, is carry out gathering according to the sequencing of time, specific as follows:
The Object light wave in i-th moment of references object in T1 time range is gathered by micro mirror array, wherein, 0 < i≤T1 and i is integer.
Such as, work as i=1,2,3 ... ..T1, then represent that micro mirror array is from the 1st moment, the 2nd moment, the Object light wave of the order continuous collecting references object that the 3rd moment is such.Because in the different time, because the reflected light of references object surrounding scenes is on the impact of its light, the Object light wave of the multiple moment continuous collecting references object within a period of time, can reflect the actual conditions of references object comprehensively.
Wherein, Object light wave can be characterized by following formula:
O (x
1, y
1)=| O (x
1, y
1) | exp [-j φ
0(x
1, y
1)] ... ... ... .. formula (1)
Wherein, x
1with y
1represent i-th moment of references object in T1 time range respectively, after the optical filtering of micro mirror array, the horizontal ordinate in i-th wave front and ordinate, O (x
1, y
1) represent that references object is at Object light wave corresponding to the i-th moment, | O (x
1, y
1) | represent the amplitude information of references object, φ
0(x
1, y
1) represent the phase information of references object.
Based on Object light wave, obtain the holographic information in references object i-th moment in T1 time range.
For formula 1, sign be the Object light wave of not references object in the same time in fact.
If with i=1 citing, then the x above
1with y
1represent references object in the 1st moment after the optical filtering of micro mirror array, the horizontal ordinate in the 1st wave front and ordinate; So O (x
1, y
1) represent that references object is at Object light wave corresponding to the 1st moment, | O (x
1, y
1) | represent the amplitude information of references object, φ
0(x
1, y
1) represent the phase information of references object.
After the Object light wave obtaining each moment, then can know the holographic information (i.e. amplitude information and phase information) of each moment references object.
Next introduces wave front.
Wave front (Wavefront), is called for short on " corrugated ", is sometimes also called cophasal surface.It is defined as: the face of each point composition arrived through same time is propagated in the vibration that wave source sends in media as well.Concrete, light wave is in transmitting procedure, and each moment on the time line all exists one perpendicular to the wave level of time shaft, is called wave front.And the point forming wave front is called a point.
As shown in Figure 3, be micro mirror array when gathering the holographic information of references object, at the schematic diagram of the different wave front of two two of not formed in the same time.
Wherein, these two wave fronts are parallel to each other on the time line.The time range that namely timeline is made up of the different moment, such as, can regard a timeline for 5 seconds as, the 1st second-5 seconds this within 5 seconds, represent the different moment separately, and each moment can a corresponding wave front.References object defines wave front u1 in the t1 moment by the effect of micro mirror array, defines wave front u2 in the t2 moment by the effect of micro mirror array.On wave front u1, there is field point p1 (point on wave front u1), on wave front u2, there is field point p2 (point on wave front u2), p1 and p2 is that same micro mirror collects, the field point that same references object was formed different two moment.
In principle, any one point in wave front all records the light-wave information of each point of references object and surrounding scenes, for no other reason than that relative position is different and temporal difference and the light intensity that produces is also different.Can understand like this, the impact of light wave when antivacuum Propagation by medium can change velocity of wave propagation (reduction velocity of propagation), make the particle of ripple a certain position in traveling process medium can produce displacement along with the vibration of ripple, the displacement do not produced in the same time that each particle is advanced at ripple is different, thus form another kind of fluctuation, time and space cause the light distribution in wave front also not identical.Therefore, the field point in wave front can reflect the light distribution of references object really.Here light distribution can be embodied by RGB three primary colours, and different wave fronts can reflect that references object is in not light distribution in the same time.
More specifically, when micro mirror array gathers the Object light wave of references object, because micro mirror each in micro mirror array comprises three sub-micro mirrors, and three sub-micro mirrors are corresponding with three primary colours respectively.Therefore, when gathering the Object light wave in i-th moment of references object in T1 time range by micro mirror array, can be divided into three kinds of Object light wave according to three primary colours with reference to the Object light wave of object, concrete embodiment is as follows:
By three sub-micro mirrors, references object is filtered, be captured in the red Object light wave O that the ruddiness in the i-th moment in T1 time range is corresponding
red(x
1, y
1), the green Object light wave O that green glow is corresponding
green(x
1, y
1), and the blue Object light wave O that blue light is corresponding
blue(x
1, y
1).
After collecting Object light wave corresponding to three primary colours, then can based on red Object light wave O
red(x
1, y
1), green Object light wave O
green(x
1, y
1), and blue Object light wave O
blue(x
1, y
1), obtain the first holographic information that ruddiness in T1 time range is corresponding respectively, the second holographic information that green glow is corresponding, and the 3rd holographic information that blue light is corresponding.
In superincumbent description, first Object light wave is gather according to the time, and when gathering, because each micro mirror has three sub-micro mirrors, therefore, can obtain the Object light wave that different primary colours are corresponding.So, at synchronization, then can collect the Object light wave that three row different base colors are corresponding, and obtain holographic information corresponding to each primary colours thus.
Collection herein, is the Object light wave of the reality of references object due to what gather, and knows holographic information by Object light wave, avoid the decomposition step of prior art, can not produce and decompose loss and distortion.
In addition, references object, at the Object light wave in each moment, is in fact that all particles of references object combine.References object consists of multiple particle in fact, such as, square build references object in Fig. 2, the surface of square is formed by the mutual permutation and combination of multiple particle, the surface of hypothetical reference object is made up of M particle, when micro mirror array gathers the holographic information of this M particle, each micro mirror can collect the holographic information of this M particle, and each particle can be decomposed into each self-corresponding holographic information of three primary colours by micro mirror array.
Further, the holographic information of M the particle that micro mirror array collects at synchronization, can react in same wave front.And the holographic information of same particle, be contain three sub-holographic informations in fact, the holographic information that namely ruddiness is corresponding, the holographic information that green glow is corresponding, and the holographic information that blue light is corresponding.
At synchronization, the wave front that 1 particle (is supposed that micro mirror array is made up of N number of micro mirror) and formed in N number of micro mirror, should be made up of N number of point.On the contrary, the wave front that M particle is formed in a micro mirror, should be made up of M field point.But, because each micro mirror is different from the relative distance of references object, therefore, in each wave front that references object is formed in N number of micro mirror, M*N field point can be had, also the situation being less than M*N field point is likely had to occur, in the embodiment of the present application, for the ease of understanding, it is the same for being defaulted as each micro mirror with the relative distance of references object, and ignore other influence factor, the wave front so formed should have M*N field point.
Further, this M*N field point represents the holographic information of references object in each wave front, can reflect the full detail in this moment of references object.
Concrete, the holographic information that micro mirror array obtains contains two parts in fact: amplitude information and phase information.
First, amplitude information is determined by light wave amplitude, namely the intensity of light.Phase information is by the phase decision of light wave, represents the location status of a certain moment references object.
If when citing characterizes the mutual relationship of amplitude information and phase information, expression formula below can be used to characterize:
U (P, t)=A (P) cos [ω t1-φ (P)] .... formula (2)
Wherein, P represents references object, t
1represent time range, U (P, t) represents references object at t
1the waveform formed in time range, A (P) represents the amplitude information of references object, and φ (P) represents the phase information of references object, ω t
1represent and time t
1relevant phase factor.
In formula (2), be amplitude information and the phase information of references object, if specific to some particles, formula (2) also can be used to illustrate.The continuous function of such as, ' certain a bit ' on plane wave.Which point specifically on plane wave, just decided by φ (P), and the time is determined by ω t, and this expression formula had both comprised the time and also comprised phase place and amplitude information.
The amplitude information of the field of same wave front point and the relation of phase information also similar with above-mentioned expression formula.
Known by description above, the concrete effect of wave front, is exactly reflect the light-wave information that references object obtained by micro mirror array in fact, and each wave front can both reflects the light distribution of Reference in particular moment.
Lower mask body introduces phase information.
Please refer to Fig. 4, describe the schematic diagram of the field point that references object is produced by different micro mirrors.
Suppose that the initial point in Fig. 4 is references object, in addition, employ the holographic information that two micro mirrors gather references object.The wave front so formed should be made up of two field points, is respectively b1 and b2.
If represent with three-dimensional coordinate, so time shaft is vertical with wave front, and true origin is object luminous point (supposing it as the first particle being references object).Then can see same wave front on a timeline, there are two different field points.
When these two field points are respectively b1 and b2, the phase place expression formula of its correspondence can be obtained.
The phase place expression formula of field point b1 is: φ (b
1)==k
xx
1+ k
yy
1+ k
zz
1+ φ
0
Wherein, ф (b) represents the phase function in plane wave wave function, and it is the linear function of rectangular space coordinate, and this is one of characteristic of plane wave, and linear function and functional image are the function of straight line.In formula, Kx, Ky, Kz are constant, and
λ is the wavelength of light wave, and K is the relative distance of field point and the first particle, and what this formula described is the phase place of light wave in space.
It can thus be appreciated that the phase place expression formula of field point b2 is: φ (b
2)==k
xx
2-k
yy
2+ k
zz
2+ φ
0
Because field point b2 is at the negative semiaxis of y-axis, therefore, k
yy
2for negative, represent that direction is contrary.
If with M particle and N number of micro mirror, then the field formed in wave front point has M*N.
On the whole, the embodiment of the present invention directly can obtain amplitude information and the phase information of references object by micro mirror array, then obtains amplitude information and the phase information of each primary colours of references object.The benefit done like this is, avoids the information distortion when being converted to RGB three primary colours.
In superincumbent description, obtain the holographic information of references object, therefore, then can perform S102.
S102, by arithmetic processor process holographic information, obtains hologram sequence, and exports hologram sequence to a spatial light modulator.
Concrete, when processing holographic information, interference light wave can be introduced.
Before execution S102, also can in T1 time range, the interference light wave in i-th moment that simulated references object in T1 time range.
Light wave is interfered to be characterized by following formula:
R (x
2, y
2)=| R (x
2, y
2) | exp [-j Ψ
0(x
2, y
2)] ... ... ... ... ... formula (3)
Wherein, x
2with y
2represent the horizontal ordinate in the interference object wave front that the i-th moment is corresponding in T1 time range and ordinate respectively, R (x
2, y
2) represent the interference light wave of interfering object corresponding, | R (x
2, y
2) | the interference light wave amplitude information that object is corresponding is interfered in representative, φ
0(x
2, y
2) representative interferes the phase information of interference light wave corresponding to object;
Wherein, light wave is interfered to comprise: the red interference light wave R that ruddiness is corresponding
red(x
2, y
2), the green interference light wave R that green glow is corresponding
green(x
2, y
2), and the indigo plant interference light wave R that blue light is corresponding
blue(x
2, y
2).
The implementation process of implementation process herein and Object light wave is above similar, repeats no more herein.
After obtaining interference light wave and Object light wave, two train waves then can be made to carry out superposition and to produce interference, convert the position phase of each point on Object light wave and amplitude to spatially change intensity, thus utilize the contrast between interference fringe and interval to be recorded by the full detail of object light wave.The egative film that record interference fringe, after development, the handling procedure such as fixing, just becomes a hologram.
Concrete, due to all corresponding respective Object light wave of each primary colours, therefore, in the process of interfering, be actually the i-th moment in T1 time range, by red interference light wave R
red(x
2, y
2) and red Object light wave O
red(x
1, y
1) interference, obtain R corresponding to ruddiness
ihologram; Simultaneously by green interference light wave R
green(x
2, y
2) and green Object light wave O
green(x
1, y
1) interference, obtain G corresponding to green glow
ihologram; Interfere light wave R by blue simultaneously
blue(x
2, y
2) and blue Object light wave O
blue(x
1, y
1) interference, obtain B corresponding to blue light
ihologram.
After respective Object light wave and the superposition of interference light wave are interfered, then can obtain hologram corresponding to three primary colours.
Concrete, in the process that superposition is interfered, if with O
blue(x
1, y
1) and R
blue(x
2, y
2) illustrate.
First, O
blue(x
1, y
1)=| O
blue(x
1, y
1) | exp [-j φ
0(x
1, y
1)];
R
blue(x
2, y
2)=| R
blue(x
2, y
2) | exp [-j Ψ
0(x
2, y
2)].
After both superpositions are interfered, the light distribution of acquisition is:
I
blue(x, y)=| R
blue(x
2, y
2)+O
blue(x
1, y
1) |
2=| R|
2+ | O|
2+ 2|R||O|cos [Ψ
0(x
2, y
2)-φ
0(x
1, y
1)]
Wherein, I
blue(x, y) characterizes Object light wave and the distribution of interference light wave intensity, ' 2|R||O|cos [Ψ
0(x
2, y
2)-φ
0(x
1, y
1)] ' contain object light wave amplitude and phase information, be produce ' interference ' item.The effect of light wave is interfered specifically to convert the PHASE DISTRIBUTION of Object light wave to light distribution after optical interference.
Two train waves of the ruddiness in three primary colours and green glow are when interfering, and concrete implementation process and similar above, does not repeat them here.
After carrying out superposition and interfering, then can obtain the hologram in this moment, namely references object carries out the surface of intensity distribution that distributes according to RGB three primary colours.And when value is different in the time range of T1 for i, then can obtain in T1 time range, the light distribution that references object is all.
If in T1 time range, by the R obtained
ihologram, G
ihologram, B
ihologram according to i=1,2 ... .T1 such time sequencing arranges, then can obtain hologram sequence.
Hologram sequence is specially: R
1g
1b
1r
2g
2b
2r
t1g
t1b
t1.
In addition, can by this hologram sequence by regular hour order, the speed of such as 30 frames/min is put in the memory unit, then spatial light modulator is delivered in reading successively.
Certainly, the hologram of generation can also be put into storage unit according to certain speed, become hologram sequence, and then spatial light modulator is delivered in reading successively.
After obtaining hologram sequence, then can perform S103: spatial light modulator receives the reproduction light that optical filter produces, and processes hologram sequence, obtain hologram.
Please refer to Fig. 5.When being sent to spatial light modulator, transmit in order, such as, in the 1st moment, transmission be R
1g
1b
1hologram, in the 2nd moment, transmission be R
2g
2b
2hologram, by that analogy, will send out the RGB three primary colours information in all wave fronts.
Now, optical filter under the control of arithmetic processor, corresponding to the R of hologram sequence
ihologram, G
ihologram, B
ithe order that hologram occurs, produces corresponding red reproduction light, green reproduction light and blue reproduction light.
Then, spatial light modulator receives red reproduction light, and green reproduction light and blue reproduction light, produce diffraction with hologram sequence, obtain hologram.
Please refer to Fig. 6 below, is the concrete structure schematic diagram of optical filter.
Wherein, optical filter contains light optical filter, turning axle, condenser lens etc. part.
First, optical filter is made up of a controlled rotation ' filter plate ', under the control of arithmetic processor, rotates a certain angle in official hour.The a branch of uniform directional light of rear generation of line focus again, light harvesting, even optical lens, is irradiated on hologram.
The effect of each parts is as follows:
Light source 601: the light source producing reproduction light is provided.
Optical filter 602: be made up of RGB three-colour filter, when light source 601 invariant position, by turning axle 603 by the white light source passed through in the corresponding moment shown with hologram, leach RGB tri-colour reproduction light and penetrate hologram as with reference to illumination.
Frame per second due to this case is 30, and therefore optical filter 602 will rotate 120 degree in (1/90) s.Certainly, numerical value given here is only for example, does not limit.
First lens is condenser lens 604, the light dispersed is focused into an approximate pointolite.
Second lens is collecting lens 605, the pointolite be focused into is assembled again the loss of avoiding producing light.
3rd lens are even optical lens 606, play the effect of even light, the light put together evenly is become directional light.Directional light herein can be red reproduction light, also can be the reproduction light of other colors, and the color of the reproduction light of appearance is with hologram sequence DISPLAY ORDER for benchmark, and the order that such as hologram sequence occurs is: R
1g
1b
1r
2g
2b
2r
t1g
t1b
t1, the order so reappearing light appearance also should be R
1g
1b
1r
2g
2b
2r
t1g
t1b
t1, opportunity of appearance and order all with the sequence consensus of hologram sequence.
Below, then can process hologram sequence, obtain hologram.
Concrete processing procedure is as follows:
First, receive reproduction light by spatial light modulator, reproduction light is specially and circulates successively the red reproduction light occurred, green reproduction light, blue reproduction light corresponding to hologram sequence;
Secondly, according to the order that hologram sequence occurs, the red reproduction light of choice for use, or green reproduction light, or indigo plant reappears light and hologram sequence produces diffraction, obtains corresponding hologram.
Concrete, spatial light modulator is present in display interior in fact, display includes spatial light modulator and receiving screen two parts, when spatial light modulator is after acquisition hologram, be irradiated on receiving screen, and use reproduction light to carry out diffraction to it, obtain hologram, receiving screen now then can display holography image.In this implementation process, receiving screen is equivalent to receive and shows hologram, just implements on receiving screen in the process of imaging.In addition, hologram also can modulate and be irradiated on receiving screen by spatial light modulator, and receiving screen now then directly can receive hologram.
To sum up, the method implementation process of the application can carry out summary description by Fig. 7.
In the figure 7, first, there is a 3D color body (i.e. references object), first gather its holographic information by micro mirror array 701.
Gathering in the process of holographic information at micro mirror array 701, is based on three primary colours in fact, and acquire object at not holographic information in the same time, such as, R1G1B1 is the holographic information in references object the 1st moment.R2G2B2 is the 2nd moment references object holographic information, by that analogy.
If the surface of object is made up of M particle, and micro mirror array 701 has N number of micro mirror, so each wave front then has M*N field point, and each point has respective RGB three primary colours.In the wave front that 1st moment was obtained so field point is as an entirety, then obtain the holographic information of references object in the 1st moment.Holographic information herein characterizes with Object light wave.And each self-corresponding Object light wave of three primary colours can be divided into according to three primary colours.
When collecting the holographic information of object, because holographic information is this moment expressed by the mode of light-wave information, micro mirror array 701 can be sent to arithmetic processor 702 and be processed.
When arithmetic processor 702 processes, holographic information corresponding to three primary colours can be processed respectively.Carry out superposition by Object light wave and corresponding interference light wave to interfere, obtain the 1st moment hologram.
After the holographic information modulating other moment in the manner described above, all holograms can be obtained, these holograms are sorted according to time sequencing, obtain hologram sequence.Then sent into spatial light modulator 703, then optical filter 704 is under the control of arithmetic processor 702, produces reproduction illumination penetrate hologram based on light source 601.Such as, in fig .9, be then with R
1g
1b
1r
2g
2b
2r
t1g
t1b
t1such order sends spatial light modulator 703 (SLM) to.
For spatial light modulator 703, then can receive hologram sequence and reproduction light, and use reproduction optical diffraction hologram sequence to be hologram, and send receiving screen 705 to and show.Concrete, the hologram now transmitted carries out transmitting according to the order that RGB is such, and therefore, reproduction light also can provide RGB three primary colours light in this order successively and irradiate.Further, when transmitting, the hologram image that spatial light modulator 703 reproduces being incident upon display holography image on receiving screen 705, if the hologram of display p.s. reaches 30Fps, just can seeing a dynamic hologram.The meaning is exactly, within 1 second, send 30 width hologram to receiving screen 705 continuously, watch with human eye, just can see dynamic hologram.
In addition, because hologram sequence is according to the such sequential processes of RGB, certainly, can also according to the such sequential processes of such as GBR, processing sequence the application does not herein limit.
In addition, the present invention has just used a spatial light modulator just can process hologram, can the cost of saving components greatly.
In superincumbent implementation process, specifically describe the implementation process of hologram display packing, based on same inventive concept, in the following embodiments, introduce the device of its correspondence.
Embodiment two:
In the embodiment of the present application, a kind of hologram display device is described.
Wherein, device comprises micro mirror array 701, arithmetic processor 702, the optical filter be connected with arithmetic processor 702 704, spatial light modulator 703, receiving screen 705, wherein,
Micro mirror array 701, for obtaining the holographic information of references object in T1 time range, and sends arithmetic processor 702 to and processes by holographic information.
Holographic information comprises amplitude information and phase information.
Optical filter 704, for generation of reproduction light, and output reproduction illumination is incident upon spatial light modulator 703.
Arithmetic processor 702, with micro mirror array 701, optical filter 704 is connected with spatial light modulator 703, for according to holographic information generating hologram sequence, and exports hologram sequence to spatial light modulator 703.
Spatial light modulator 703, processing hologram sequence for receiving reproduction light, obtaining hologram, and transmitting hologram to receiving screen 705.
Further, micro mirror array 701 specifically for gathering the Object light wave in i-th moment of references object in T1 time range, wherein, 0 < i≤T1 and i is integer, wherein, Object light wave can be characterized by following formula:
O (x
1, y
1)=| O (x
1, y
1) | exp [-j φ
0(x
1, y
1)], wherein, x
1with y
1represent i-th moment of references object in T1 time range respectively, after the optical filtering of micro mirror array 701, the horizontal ordinate in i-th wave front and ordinate, O (x
1, y
1) represent the Object light wave that references object is corresponding, | O (x
1, y
1) | represent the amplitude information of references object, φ
0(x
1, y
1) represent the phase information of references object.
Based on Object light wave, obtain the holographic information in references object i-th moment in T1 time range.
Further, in micro mirror array 701, each micro mirror comprises three sub-micro mirrors, and three sub-micro mirrors are corresponding respectively with three primary colours.
Micro mirror array 701, specifically for gathering the Object light wave in i-th moment of references object in T1 time range, is specially:
By three sub-micro mirrors, references object is filtered, be captured in the red Object light wave O in the i-th moment in T1 time range
red(x
1, y
1), green Object light wave O
green(x
1, y
1), and blue Object light wave O
blue(x
1, y
1).
Based on red Object light wave O
red(x
1, y
1), green Object light wave O
green(x
1, y
1), and blue Object light wave O
blue(x
1, y
1), obtain the first holographic information that ruddiness in T1 time range is corresponding respectively, the second holographic information that green glow is corresponding, and the 3rd holographic information that blue light is corresponding.
Optical filter comprises red filter plate corresponding with three primary colours respectively, green filter plate and blue filter plate, and filter plate, under the control of arithmetic processor, blocks fixing light source successively, makes light source produce corresponding red reproduction light through filter plate, green reproduction light and blue reproduction light.
Further, arithmetic processor also for: based on the first holographic information, the second holographic information and the 3rd holographic information, produce the R corresponding with ruddiness
ihologram, the G corresponding with green glow
ihologram and the B corresponding with blue light
ihologram, and the R that will produce
ihologram, G
ihologram, B
ihologram according to i=1,2 ... .T1 time sequencing arranges, and obtain hologram sequence, and hologram sequence is sent to spatial light modulator, wherein, hologram sequence is specially: R
1g
1b
1r
2g
2b
2r
t1g
t1b
t1;
Control the order that optical filter produces reproduction light, to make red reproduction light, the order of spatial light modulator and R in hologram sequence are penetrated in green reproduction light and blue reproduction illumination
ihologram, G
ihologram, B
ithe sequence consensus of hologram arrangement.
By one or more embodiment of the present invention, following technique effect can be realized:
In one or more embodiment of the application, first, obtained the holographic information of references object by micro mirror array, holographic information is here the holographic information of the references object that micro mirror array directly obtains, and the chromatic information of object need not be decomposed, therefore can not have the risk of distortion.Then, by arithmetic processor process holographic information, obtain hologram sequence.Hologram sequence herein, arranges according to time sequencing, therefore, when hologram sequence being exported by arithmetic processor, only needs a spatial light modulator.In addition, the optical filter of the embodiment of the present application does not use laser, but uses reproduction light, and can produce different reproduction light, to irradiate hologram sequence according to the hologram sequence transmitted.To sum up, the scheme that the embodiment of the present application and prior art adopt is different, and the application directly obtains the holographic information of references object, need not decompose, avoid the risk of decomposing distortion, and, the application only used a spatial light modulator, has greatly saved technical costs.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And, the present invention can adopt and (include but not limited to magnetic disk memory in one or more computer-usable storage medium wherein including computer usable program code, CD-ROM, optical memory etc.) form of the upper computer program implemented.
The present invention describes with reference to according to the process flow diagram of the method for the embodiment of the present invention, equipment (system) and computer program and/or block scheme.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or square frame.These computer program instructions can being provided to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computing machine or other programmable data processing device produce device for realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make on computing machine or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computing machine or other programmable devices is provided for the step realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a hologram display packing, is characterized in that, described method comprises:
Micro mirror array obtains the holographic information of references object in T1 time range, and described holographic information comprises amplitude information and phase information, and wherein said T1 is greater than 0;
Holographic information described in arithmetic processor process, obtains hologram sequence, and exports described hologram sequence to a spatial light modulator;
Described spatial light modulator receives the reproduction light that optical filter produces, and processes described hologram sequence, obtains hologram;
Receiving screen receives and shows described hologram.
2. the method for claim 1, is characterized in that, described micro mirror array obtains the holographic information of references object in T1 time range, is specially:
The Object light wave in i-th moment of described references object in described T1 time range is gathered by micro mirror array, wherein, 0 < i≤T1 and i is integer, wherein, described Object light wave is characterized by following formula:
O (x
1, y
1)=| O (x
1, y
1) | exp [-j φ
0(x
1, y
1)], wherein, x
1with y
1represent i-th moment of described references object in described T1 time range respectively, after the optical filtering of micro mirror array, the horizontal ordinate in i-th wave front and ordinate, O (x
1, y
1) represent that described references object is at Object light wave corresponding to the i-th moment, | O (x
1, y
1) | represent the amplitude information of described references object, φ
0(x
1, y
1) represent the phase information of described references object;
Based on described Object light wave, the holographic information in i-th moment that obtained described references object in described T1 time range.
3. method as claimed in claim 2, is characterized in that,
In described micro mirror array, each micro mirror comprises three sub-micro mirrors, and described three sub-micro mirrors are corresponding with three primary colours respectively;
The described Object light wave being gathered i-th moment of described references object in described T1 time range by micro mirror array, is specially:
By described three sub-micro mirrors, described references object is filtered, be captured in the red Object light wave O that the ruddiness in the i-th moment in described T1 time range is corresponding
red(x
1, y
1), the green Object light wave O that green glow is corresponding
green(x
1, y
1), and the blue Object light wave O that blue light is corresponding
blue(x
1, y
1);
Based on described red Object light wave O
red(x
1, y
1), described green Object light wave O
green(x
1, y
1), and described blue Object light wave O
blue(x
1, y
1), obtain the first holographic information that ruddiness in described T1 time range is corresponding respectively, the second holographic information that green glow is corresponding, and the 3rd holographic information that blue light is corresponding.
4. method as claimed in claim 3, is characterized in that, holographic information described in described arithmetic processor process, and before obtaining hologram sequence, described method also comprises:
In described T1 time range, the interference light wave in i-th moment that simulated described references object in described T1 time range, described interference light wave is characterized by following formula:
R (x
2, y
2)=| R (x
2, y
2) | exp [-j Ψ
0(x
2, y
2)], wherein, x
2with y
2represent the horizontal ordinate in the interference object wave front that the i-th moment is corresponding in described T1 time range and ordinate respectively, R (x
2, y
2) represent the interference light wave that described interference object is corresponding, | R (x
2, y
2) | represent the interference light wave amplitude information that described interference object is corresponding, φ
0(x
2, y
2) represent the phase information of interference light wave corresponding to described interference object;
Wherein, described interference light wave comprises: the red interference light wave R that described ruddiness is corresponding
red(x
2, y
2), the green interference light wave R that described green glow is corresponding
green(x
2, y
2), and the indigo plant interference light wave R that described blue light is corresponding
blue(x
2, y
2).
5. method as claimed in claim 4, is characterized in that, holographic information described in described arithmetic processor process, obtains hologram sequence, specifically comprises:
The i-th moment in described T1 time range, by described red interference light wave R
red(x
2, y
2) and described red Object light wave O
red(x
1, y
1) interference, obtain R corresponding to ruddiness
ihologram; Simultaneously
By described green interference light wave R
green(x
2, y
2) and described green Object light wave O
green(x
1, y
1) interference, obtain G corresponding to green glow
ihologram; Simultaneously
Light wave R is interfered by described indigo plant
blue(x
2, y
2) and described blue Object light wave O
blue(x
1, y
1) interference, obtain B corresponding to blue light
ihologram;
In described T1 time range, by the R obtained
ihologram, G
ihologram, B
ihologram according to i=1,2 ... .T1 time sequencing arranges, and obtain hologram sequence, wherein, described hologram sequence is specially: R
1g
1b
1r
2g
2b
2r
t1g
t1b
t1.
6. method as claimed in claim 5, is characterized in that, described spatial light modulator receives the reproduction light that optical filter produces, and processes described hologram sequence, obtains hologram, specifically comprises:
Optical filter under the control of described arithmetic processor, corresponding to the R of described hologram sequence
ihologram, G
ihologram, B
ithe order that hologram occurs, produces corresponding red reproduction light, green reproduction light and blue reproduction light;
Described spatial light modulator receives described red reproduction light, and green reproduction light and blue reproduction light, produce diffraction with described hologram sequence, obtain hologram.
7. a hologram display device, is characterized in that, described device comprises micro mirror array, arithmetic processor, optical filter, a spatial light modulator and receiving screen, wherein,
Described micro mirror array, for obtaining the holographic information of references object in T1 time range, and send described holographic information to arithmetic processor process, described holographic information comprises amplitude information and phase information;
Described optical filter, for generation of reproduction light, and exports described reproduction illumination and is incident upon described spatial light modulator;
Described arithmetic processor, with described micro mirror array, described optical filter is connected with described spatial light modulator, for according to described holographic information generating hologram sequence, and exports described hologram sequence to described spatial light modulator;
Described spatial light modulator, processes described hologram sequence for receiving described reproduction light, obtains hologram, and transmits described hologram to described receiving screen.
8. device as claimed in claim 7, it is characterized in that, each micro mirror in described micro mirror array comprises three sub-micro mirrors, and described three sub-micro mirrors are corresponding with three primary colours respectively;
Described micro mirror array, specifically for gathering the Object light wave in i-th moment of described references object in described T1 time range, is specially:
By described three sub-micro mirrors, described references object is filtered, be captured in the red Object light wave O that the ruddiness in the i-th moment in described T1 time range is corresponding
red(x
1, y
1), the green Object light wave O that green glow is corresponding
green(x
1, y
1), and the blue Object light wave O that blue light is corresponding
blue(x
1, y
1);
Based on described red Object light wave O
red(x
1, y
1), described green Object light wave O
green(x
1, y
1), and described blue Object light wave O
blue(x
1, y
1), obtain the first holographic information that ruddiness in described T1 time range is corresponding respectively, the second holographic information that green glow is corresponding, and the 3rd holographic information that blue light is corresponding.
9. device as claimed in claim 7, it is characterized in that, described optical filter comprises red filter plate corresponding with three primary colours respectively, green filter plate and blue filter plate, described optical filter is under the control of described arithmetic processor, block fixing light source successively, make described light source produce corresponding red reproduction light through described optical filter, green reproduction light and blue reproduction light.
10. device as claimed in claim 8, is characterized in that,
Described arithmetic processor also for:
Based on described first holographic information, the second holographic information and the 3rd holographic information, produce the R corresponding with ruddiness
ihologram, the G corresponding with green glow
ihologram and the B corresponding with blue light
ihologram, and the R that will produce
ihologram, G
ihologram, B
ihologram according to i=1,2 ... .T1 time sequencing arranges, and obtain hologram sequence, and described hologram sequence is sent to described spatial light modulator, wherein, described hologram sequence is specially: R
1g
1b
1r
2g
2b
2r
t1g
t1b
t1;
Control the order that described optical filter produces described reproduction light, to make red reproduction light, the order of described spatial light modulator and R in described hologram sequence are penetrated in green reproduction light and blue reproduction illumination
ihologram, G
ihologram, B
ithe sequence consensus of hologram arrangement.
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