CN103809365A - True three-dimensional image display system and true three-dimensional image display method - Google Patents

Abstract

The invention relates to a true three-dimensional image display system and a true three-dimensional image display method. The true three-dimensional image display system that is used for projecting K three-dimensional images to K view fields comprises at least one image source, an optical compression device, a holographic screen, and an optical scanning device. To be specific, the at least one image source is used for generating a plurality of holographic image light beams, wherein each holographic image light beam has image information of H-column pixels of the three-dimensional images and has N*K-column pixels. The optical compression device is used for compressing all the holographic image light beams to form narrow holographic image light beams; and each narrow holographic image light beam includes N-column view field image light beams and each column of view field image light beams include K columns of pixels. The holographic screen includes diffraction units that are used for receiving all the narrow holographic image light beams and diffracting the K columns of pixels of all columns of view field image light beams to the K view fields through all the imaging points. And the optical scanning device is used for scanning all the narrow holographic image light beams to the corresponding diffraction units. According to the invention, displaying of a true three-dimensional image can be realized and the resolution ratio is high.

Description

True three-dimensional image display systems and true three-dimensional image display method

Technical field

The present invention relates to image display technology, relate in particular to a kind of true three-dimensional image display systems and true three-dimensional image display method.

Background technology

So-called " true 3-D display " refers to that the relative position relation between shown three-dimensional body is also embodied truly, form three-dimension space image truly, there is the character of surface of the actual physical degree of depth and picture quality, observer just can observe arbitrarily shown object, the three-dimensional information that perception is true, the most complete from multiple directions without any need for utility appliance.True dimension display technologies has fundamentally been upgraded the concept that image shows, make the image of demonstration life-like, provide complete psychology and physiological three-dimensional perception information to beholder, for understand 3-D view and wherein the spatial relationship between object unique means are provided.

The unique features that hologram image shows is to utilize optical interference, by medium recording all light field information of reappearing light wave, comprises a phase, amplitude, wavelength.Therefore, making people watch holographic demonstration is obtain and watch the identical visual effect of actual object.

Figure 13 provides a very simple holographic display mechanism.With the reproduction laser light illumination hologram consistent with former reference light, in hologram plane, obtain and the former on all four playback light of object light that records again.This need guarantee between reference wave and object wave that frequency and phase relation are fixed.Select a suitable angles of display can eliminate unwanted pattern.

Naturally scene can be counted as the set of multiple pointolites.Each point on object can be regarded a pointolite as, launches spherical wave.As Figure 13 provides the interference between object wave and coherent wave.This interference has just produced interference fringe picture on recording materials.

General light wave is described mutually by its frequency, amplitude and position, can adopt 4 dimension equation expressions of time space field below:

I(r，t)=f ^**f=|f(r，t)| ² （1）

$f(r,t)={\&Integral;\&Integral;}_0^{\&infin;}F(k,\mathrm{\&nu;}){\mathrm{<figure-callout\; id="2"\; label="e\; j"\; filenames="HDA00002374320700061.png"\; state="\{\{state\}\}">e</figure-callout>}}^j\mathrm{dkd\&nu;}---\left(2\right)$

Formula in light field:

I(k，ν)=F ^**F=|F(k，ν)| ² （3）

$F(k,\mathrm{\&nu;})={\&Integral;\&Integral;}_0^{\&infin;}f(r,t)e^{-\mathrm{<figure-callout\; id="2"\; label="j"\; filenames="HDA00002374320700061.png"\; state="\{\{state\}\}">j</figure-callout>}2\mathrm{\&pi;}(-k\&CenterDot;r+\mathrm{\&nu;t})}\mathrm{drdt}---\left(4\right)$

Wherein, r is three dimensions vector

r ²＝x ²+y ²+z ²，andx＝r cos(α)，y＝r cos(β)，z＝r cos(γ) （5）

K is photon spread vector:

$k=1/\mathrm{\&lambda;},k^2=k_x^2+k_{\mathrm{<figure-callout\; id="2"\; label="y"\; filenames="HDA00002374320700061.png"\; state="\{\{state\}\}">y</figure-callout>}}^2+{\mathrm{<figure-callout\; id="2"\; label="k\; z"\; filenames="HDA00002374320700061.png"\; state="\{\{state\}\}">k</figure-callout>}}_z^{},\mathrm{and}{k}_x=k\cos \left(\mathrm{\&alpha;}\right),k_y=k\cos \left(\mathrm{\&beta;}\right),k_z=k\cos \left(\mathrm{\&gamma;}\right)---\left(6\right)$

(α, beta, gamma) is the orientation angle of vector in cartesian coordinate system (x, y, z).

In traditional hologram, when light wave is not, become, and light wavelength is monochromatic.Therefore four-dimensional Fourier equation simplification is arrived three dimensional form by we:

In time space field:

I(r)＝f ^**f＝|f(r)| ² （7）

$f\left(r\right)={\&Integral;}_0^{\&infin;}F(k_0,\mathrm{\&nu;}){\mathrm{<figure-callout\; id="2"\; label="e\; j"\; filenames="HDA00002374320700061.png"\; state="\{\{state\}\}">e</figure-callout>}}^j{\mathrm{dk}}_0---\left(8\right)$

In light field:

I(k ₀)=F ^**F＝|F(k ₀)| ² （9）

$F\left(k_0\right)={\&Integral;}_0^{\&infin;}f\left(r\right)e^{-\mathrm{<figure-callout\; id="2"\; label="j"\; filenames="HDA00002374320700061.png"\; state="\{\{state\}\}">j</figure-callout>}2\mathrm{\&pi;}(-k_0\&CenterDot;r)}\mathrm{dr}---\left(10\right)$

Wherein, k0=1/ λ 0.K0 is the standard vector that only characterizes direction political reform.Therefore the light wave function f (r) that, formula 9 provides is the monochromatic plane wave in a series of all directions

stack.The Fourier that formula 11 provides light wave function f (r) transforms.

Consider two monochromatic interference, we define reference wave is f1(r), object wave is f2(r) $f_1\left(r\right)=f_{10}{e}^{-\mathrm{<figure-callout\; id="2"\; label="j"\; filenames="HDA00002374320700061.png"\; state="\{\{state\}\}">j</figure-callout>}2\mathrm{\&pi;}(r/\mathrm{\&lambda;}-{\mathrm{\&phi;}}_1\left(r\right))}$

$f_2\left(r\right)=f_{20}{e}^{-\mathrm{<figure-callout\; id="2"\; label="j"\; filenames="HDA00002374320700061.png"\; state="\{\{state\}\}">j</figure-callout>}2\mathrm{\&pi;}(r/\mathrm{\&lambda;}-{\mathrm{\&phi;}}_2\left(r\right))}---\left(11\right)$

Wherein, Φ is light wave radially position phase: 0≤Ф i(x, y)≤2 π.The light intensity of wavefront is the relevant results of two monochromic beams, is expressed as:

I(r)=|f ₁₀| ²+|f ₂₀| ²+2f ₁₀f ₂₀cos(φ _i(r)+φ _k(r)) （12）

Actual light field distribution is made up of three parts.Section 1 is the self-interference of thing itself, interferes when the light from two object point scatterings produces, and the space distribution of light field will change.Generate in holographic (CGH) calculating at computing machine, this mode is not included.Section 2 is the light intensity of reference wave, represents skew constant on a kind of space, by holography, light intensity is increased.In CGH, corresponding skew can not considered, because CGH is normalized calculating the most at last.Section 3 is the relevant of object wave and reference wave.Coherent fringe comprises essential holographic information, has enough had Image Reconstruction.

Once recording materials expose at the light wave line consistent with former reference wave, as Figure 14, each coherent fringe can reappear original wavefront, is just that the difference of original light field is launched seemingly.The fusion reconstruct of these wavefront the true 3-D view of whole scene.

Produce if hypotheses 3-D display is horizontal parallax, also just say that the holographic vertical line in each unit does not have correlativity, and final 3-D display there is the mobile parallax (HPO) of horizontal direction, but there is no the mobile parallax on vertical direction.Unit holographic line is gone out light along a horizontal section diffraction, formation can characterize the picture point of three-dimensional image on (x, z) horizontal section.In Figure 15, fan beam represents the unique character of HPO three-dimensional display system.One width three-dimensional image can think by a pile holographic line diffraction generate (x, z) face on two dimension slicing form.Each y value is calculated to a series of holographic line, just can complete whole CGH and calculate.

We also can regard three-dimensional image as the integrated of a series of self luminous point, and coordinate adopts (Xp, Yp, Zp) to represent.Every bit all has real amplitude ap and is worth mutually ф p with position.Square (ap) 2 of amplitude is directly proportional to the brightness of this point, and phase ф p is relevant to reference wave in position.Hologram plane is on z=0 face, and vertical direction unit's hits (pitch) of HPO hologram is generally every millimeter of several line pair so.

From spectrum, the basic interference fringe of each spectral line is double gauss curve, is equivalent to a bandpass filter, can be calculated.For the situation of the parameters such as given sampling interval and display parameter, the available Convolution Formula below of the parsing of interference fringe is expressed:

$\left[\mathrm{Fringe}\right]=\left[\begin{array}{cccc}{h}_1& {\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="HDA00002374320700061.png"\; state="\{\{state\}\}">h</figure-callout>}}_2& \&CenterDot;\&CenterDot;\&CenterDot;& h_N\end{array}\right]\left[\begin{array}{c}{B}_1\\ {\mathrm{<figure-callout\; id="2"\; label="B"\; filenames="HDA00002374320700061.png"\; state="\{\{state\}\}">B</figure-callout>}}_2\\ \&CenterDot;\\ \&CenterDot;\\ \&CenterDot;\\ B_N\end{array}\right]---\left(14\right)$

So how to utilize above-mentioned principle, adopting suitable display system and method to obtain true 3-D display effect is the problem that those skilled in the art study.

Summary of the invention

Provide hereinafter about brief overview of the present invention, to the basic comprehension about some aspect of the present invention is provided.Should be appreciated that this general introduction is not about exhaustive general introduction of the present invention.It is not that intention is determined key of the present invention or pith, and nor is it intended to limit the scope of the present invention.Its object is only that the form of simplifying provides some concept, using this as the preorder in greater detail of discussing after a while.

A fundamental purpose of the present invention is to provide a kind of true three-dimensional image display systems and true three-dimensional image display method that can reach true 3-D display effect.

For achieving the above object, the invention provides a kind of true three-dimensional image display systems, for K 3-D view correspondence is projected to K visual field, comprising:

At least one image source, for generate multiple hologram image light beams with the sequential of presetting, each hologram image light beam has the image information of the H row pixel of each 3-D view, and each hologram image light beam comprises N*K row pixel;

Optical compression device, be arranged on the emitting light path of at least one image source, for the horizontal width of each hologram image light beam is compressed to form hologram image light beam in a narrow margin, each light beam of hologram image in a narrow margin comprises N row view field image light beam, and every row view field image light beam comprises the K row pixel that corresponds respectively to K visual field;

Hologram screen, comprise L diffraction element, each diffraction element covers the N row location of pixels of hologram screen, each diffraction element receives respectively hologram image light beam in a narrow margin for the sequential according to default, and the K row pixel in the each row view field image light beam in the light beam of hologram image in a narrow margin receiving is diffracted in K visual field through its N row location of pixels correspondence respectively;

Optical scanner, for by each hologram image beam flying in a narrow margin to diffraction element corresponding to hologram screen,

Wherein, H, N, K, L are the integer that is not less than 1.

For achieving the above object, the present invention also provides another kind of true three-dimensional image display systems, for K 3-D view correspondence is projected to K visual field, it is characterized in that, comprising:

Multiple projection arrangements, generate multiple hologram image light beams for correspondence, and each hologram image light beam has the image information of the H row pixel of each 3-D view, and each hologram image light beam comprises N*K row pixel;

Multiple optical compression devices, multiple optical compression devices are separately positioned on the emitting light path of multiple projection arrangements, for the horizontal width of corresponding hologram image light beam is compressed to form hologram image light beam in a narrow margin, each light beam of hologram image in a narrow margin comprises N row view field image light beam, and every row view field image light beam comprises K row pixel;

Hologram screen, comprise multiple diffraction element, multiple diffraction element correspondences are positioned on the emitting light path of multiple optical compression devices, each diffraction element covers the N row location of pixels of hologram screen, each diffraction element receives a hologram image light beam in a narrow margin for correspondence, and the K row pixel in the each row view field image light beam in the light beam of hologram image in a narrow margin receiving is diffracted in K visual field through a row location of pixels of its correspondence

Wherein, K, N are not less than 1 integer.

For achieving the above object, the present invention also provides a kind of true three-dimensional image display method, utilizes the true three-dimensional image display systems of above-mentioned one that K 3-D view correspondence is projected in K visual field, comprising:

Image generates step: at least one image source generates multiple hologram image light beams according to default sequential;

Optical compression step: optical compression device compresses to form hologram image light beam in a narrow margin to the horizontal width of each hologram image light beam; Optical scanning step: optical scanner by each hologram image beam flying in a narrow margin to diffraction element corresponding to hologram screen, beam diffraction step: each diffraction element of hologram screen receives each hologram image light beam in a narrow margin and the K row pixel in the each row view field image light beam in the light beam of hologram image in a narrow margin receiving is diffracted in K visual field through its N row location of pixels correspondence respectively according to default sequential.

For achieving the above object, the present invention also provides another kind of true three-dimensional image display method, utilizes the true three-dimensional image display systems of above-mentioned another kind that K 3-D view correspondence is projected in K visual field,, it is characterized in that, comprising:

Image generates step: the multiple hologram image light beams of the corresponding generation of multiple projection arrangements; Optical compression step: multiple optical compression devices compress to form respectively hologram image light beam in a narrow margin to the horizontal width of corresponding hologram image light beam; Beam diffraction step: the corresponding light beam of hologram image in a narrow margin that receives multiple optical compression device outputs of multiple diffraction element of hologram screen, and the K row pixel of the each row view field image light beam in the light beam of hologram image in a narrow margin receiving is diffracted in K visual field through a row location of pixels of its correspondence.

True three-dimensional image display systems of the present invention and method adopt at least one image source according to default sequential generating hologram as light beam, or adopt the multiple hologram image light beams of the corresponding output of multiple projection arrangements, by each hologram image light beam is carried out scanning the diffraction element that hologram screen is corresponding after optical compression, because each hologram image light beam comprises the image information of the H row pixel of 3-D view, and the each row view field image light beam during the light beam of hologram image in a narrow margin that compression obtains comprises comprises the K row pixel of hologram image light beam, each diffraction element of hologram screen covers N row location of pixels, in the time that hologram image in a narrow margin projects diffraction element corresponding to hologram screen, make the position of the corresponding each pixel of hologram screen penetrate light to this K visual field, therefore the observer in each visual field can both observe 3-D view, reach true 3-D display effect, and the 3-D view forming has high-resolution and picture quality.

Accompanying drawing explanation

Below with reference to the accompanying drawings illustrate embodiments of the invention, can understand more easily above and other objects, features and advantages of the present invention.Parts in accompanying drawing are just in order to illustrate principle of the present invention.In the accompanying drawings, same or similar technical characterictic or parts will adopt same or similar Reference numeral to represent.

Fig. 1, Fig. 2 are the structural representation of the embodiment 1 of true three-dimensional image display systems of the present invention.

Fig. 3 is synthetic hologram projection frequency spectrum of the present invention and it is carried out to the schematic diagram of projection, diffraction.

Fig. 4 is the structural representation of the embodiment 2 of true three-dimensional image display systems of the present invention.

Fig. 5 is the structural representation of the embodiment 3 of true three-dimensional image display systems of the present invention.

Fig. 6 is in the embodiment 4 of true three-dimensional image display systems of the present invention, to the image source schematic diagram that the hologram image light beam of projection combines continuously.

Fig. 7 is the structural representation of the embodiment 5 of true three-dimensional image display systems of the present invention.

Fig. 8 is the process flow diagram of the embodiment 1 of true three-dimensional image display method of the present invention.

Fig. 9 is the process flow diagram of the embodiment 2 of true three-dimensional image display method of the present invention.

Figure 10 is the process flow diagram of the embodiment 3 of true three-dimensional image display method of the present invention.

Figure 11 is the process flow diagram of the embodiment 4 of true three-dimensional image display method of the present invention.

Figure 12 is the process flow diagram of the embodiment 5 of true three-dimensional image display method of the present invention.

Figure 13 is the schematic diagram that utilizes holographic recording and holographic interference generating three-dimensional image in prior art.

Figure 14 is the schematic diagram that reappears hologram image in prior art.

Figure 15 is the schematic diagram of the holography of reveal competence parallax in prior art.

Embodiment

Embodiments of the invention are described with reference to the accompanying drawings.The element of describing in an accompanying drawing of the present invention or a kind of embodiment and feature can combine with element and feature shown in one or more other accompanying drawing or embodiment.It should be noted that for purposes of clarity, in accompanying drawing and explanation, omitted expression and the description of unrelated to the invention, parts known to persons of ordinary skill in the art and processing.

The invention provides a kind of true three-dimensional image display systems, for K 3-D view correspondence is projected to K visual field, comprising:

At least one image source, for generate multiple hologram image light beams with the sequential of presetting, each hologram image light beam has the image information of the H row pixel of each 3-D view, and each hologram image light beam comprises N*K row pixel;

Optical compression device, be arranged on the emitting light path of at least one image source, for the horizontal width of each hologram image light beam is compressed to form hologram image light beam in a narrow margin, each light beam of hologram image in a narrow margin comprises N row view field image light beam, and every row view field image light beam comprises the K row pixel that corresponds respectively to K visual field;

Hologram screen, comprise L diffraction element, each diffraction element covers the N row location of pixels of hologram screen, each diffraction element receives respectively hologram image light beam in a narrow margin for the sequential according to default, and the K row pixel in the each row view field image light beam in the light beam of hologram image in a narrow margin receiving is diffracted in K visual field through its N row location of pixels correspondence respectively;

Optical scanner, for by each hologram image beam flying in a narrow margin to diffraction element corresponding to hologram screen,

Wherein, H, N, K, L are the integer that is not less than 1.

Alternatively, image source comprises beam processor, carries out combined treatment for two hologram image light beams of ordered pair arbitrary continuation when default.

Alternatively, each optical compression device comprises refracting telescope assembly, mirror assembly or diffraction element assembly.

Alternatively, also comprise reflection unit, reflection unit comprises L reflector element, L reflector element is corresponding with L diffraction element of hologram screen, each reflector element for from optical scanner corresponding receive one in a narrow margin hologram image light beam and by the beam reflection of hologram image in a narrow margin receiving to diffraction element corresponding to hologram screen.

Alternatively, also comprise crevice projection angle adjusting gear, for to each hologram image light beam in a narrow margin of optical scanner output to the crevice projection angle of reflection unit adjust so that each in a narrow margin hologram image light beam project the reflector element that reflection unit is corresponding.

Alternatively, also comprise segmentation projection lens group, be arranged between the emitting light path of reflection unit and the input path of hologram screen, segmentation projection lens group comprises L projection lens, and L projection lens is transmitted through L diffraction element of hologram screen for the corresponding light beam of hologram image in a narrow margin by the L of reflection unit reflector element reflection.

The embodiment 1 of true three-dimensional image display systems

Referring to figs. 1 to Fig. 3, the embodiment 1 of true three-dimensional image display systems of the present invention is provided with image source 010 optical compression device 011, optical scanner 012 and hologram screen 013 successively along the light path direction of propagation, particularly, optical compression device 011 is arranged on the emitting light path of image source, optical scanner 012 is arranged on the emitting light path of optical compression device 011, and hologram screen 013 is arranged on the emitting light path of optical scanner 012.

Image source 010 can be, for example high speed projection engine, and this high speed projection engine generates at a high speed multiple hologram image light beams in order to the sequential to preset, and each hologram image light beam can comprise row of 3-D view or the image information of multiple row pixel.

Image source can generate multiple hologram image light beams continuously according to this default sequential.For example, image source 010 successively generating hologram as light beam A, B, C ... wherein hologram image light beam A comprises the image information of corresponding the 1st visual field of 3-D view the 1st row pixel, the image information of corresponding the 2nd visual field of 3-D view the 1st row pixel successively Hologram image light beam B comprises the image information of corresponding the 2nd visual field of the 2nd row pixel of image information, the 3-D view of 3-D view the 2nd corresponding the 1st visual field of row pixel successively Hologram image light beam C comprises the image information of the corresponding each visual field of the 3rd row pixel.

And for example, image source 010 successively generating hologram as light beam A 1, B1, C1 ... wherein hologram image light beam A 1 comprises that the 1st row of 3-D view are to the image information of the corresponding each visual field of the 10th row pixel successively, hologram image light beam B1 comprises that the 11st row of 3-D view are to the image information of the corresponding each visual field of the 20th row pixel successively, hologram image light beam C1 comprises that the 21st row of 3-D view are to the image information of the corresponding each visual field of the 30th row pixel successively ... as shown in Figure 3, the image information of every row pixel can comprise synthetic hologram projection frequency spectrum, this synthetic hologram projection frequency spectrum can be synthetic by multiple frequency contents of shown object, for example, can be the sum of products of the plurality of frequency content and its weighing vector.This frequency content can characterize the information such as the geometric configuration, surface color and polish, texture of shown object.That is to say, each hologram image light beam comprises the synthetic hologram projection frequency spectrum of a row pixel or the synthetic hologram projection frequency spectrum of multiple row pixel.Each image source 010 is per second generates tens thousand of hologram image light beams, and the quantity of image source 010 can be one or more.

In the present embodiment, the horizontal width of supposing each hologram image light beam is K*N(pixel), required visual field number is K, each hologram image light beam can comprise N group view field image light beam, every group of view field image light beam comprises K row pixel, and this K row pixel is corresponding to this K visual field.Optical compression device 011 compresses and forms hologram image light beam in a narrow margin the horizontal width of each hologram image light beam, each light beam of hologram image in a narrow margin comprises N row view field image light beam, every row view field image light beam comprises the K row pixel of hologram image light beam, each hologram image light beam is in a narrow margin scanned up to the diffraction element of hologram image light beam through optical scanner 012, the K row pixel of the every row view field image light beam in each hologram image light beam is in a narrow margin diffracted in K visual field through corresponding diffraction element.

For example, if image source 010 generating hologram is 800(pixel as the width of light beam), visual field number is 800, each hologram image light beam comprises 1 row view field image light beam, this row view field image light beam comprises 800 row pixels (light beam) of hologram image light beam, hologram image light beam after compression, the 1st row pixel of this row view field image light beam is diffracted into the 1st visual field by the diffraction element of hologram screen 013 (as the diffraction element a1 in Fig. 1), the 2nd row pixel is diffracted into the 2nd visual field through this diffraction element, by that analogy, the 800th row pixel is diffracted into the 800th visual field through this diffraction element.Then optical scanner 012 moves to the position of corresponding next diffraction element, with by the next one in a narrow margin hologram image beam flying to the next diffraction element of hologram screen.In the present embodiment, diffraction element is the region that covers the N row location of pixels of hologram screen 013, and in this example, the numerical value of N is 1, and diffraction element a1 covers a row location of pixels of hologram screen 013.

As shown in Figure 2, if visual field number is 200, the hologram image light beam of 800 row pixels comprises 4 row view field image light beams (N=4), every row view field image light beam comprises 200 row pixels of this hologram image light beam, now diffraction element covers the 4 row location of pixels (as diffraction element a2) of hologram screen, now 200 row pixels of 4 row view field image light beams are diffracted into the 1st to the 200th visual field through 4 imaging points (each imaging point covers a row location of pixels of hologram screen, as the imaging point d1-d4 in Fig. 2) of diffraction element a2 respectively.Then optical scanner 012 moves to the position of corresponding next diffraction element, with by the next one in a narrow margin 4 row view field image beam flyings in hologram image light beam to 4 imaging points of the next diffraction element of hologram screen.

In above-mentioned example, hologram screen can comprise L diffraction element, that is to say, the light beam of optical scanning light beam output can cover L diffraction element, for example, optical scanner is by the motion of self, the time sequencing that can generate according to hologram image light beam by first in a narrow margin hologram image beam flying to first diffraction element, by second hologram image beam flying to the second diffraction element in a narrow margin ... by individual L hologram image beam diffraction L diffraction element on earth in a narrow margin, the beam flying of (L+1) individual hologram image is in a narrow margin arrived to first diffraction element, by (L+2) hologram image beam flying to the second diffraction element in a narrow margin, circulate with this.

Optical scanner 012 in diffraction element the present embodiment can be, and for example, rotating scanning mirrors, particularly, can be rotating multisurface prism or reciprocal galvanometer.The light beam that optical scanner 012 is exported can cover at least one diffraction element, and can for example, arrive by the motion of self (rotation) can be by hologram image beam flying in a narrow margin to the position of corresponding diffraction element.

In the present embodiment, optical compression device 011 can comprise refracting telescope assembly, as the refracting telescope assembly of the convex lens in Fig. 1 and concavees lens composition.Optical compression device also can comprise other optical module, and for example mirror assembly or diffraction element assembly, as long as can compress light beam.

The light beam of corresponding K the visual field of all row pixels of the 3-D view that the diffraction element diffraction of hologram screen 013 goes out can arrive in corresponding visual field (#1-#k), and the spectators in each visual field can be observed the 3-D view of corresponding this visual field.

In the present embodiment, N, K, L, H are the integer that is not less than 1.

In the present embodiment, each hologram image light beam comprises row of 3-D view or the image information of the corresponding each visual field of multiple row pixel, be compressed in a narrow margin and be scanned up to the diffraction element that hologram screen is corresponding after hologram image light beam, and after hologram image light beam is compressed, K row pixel in its every row view field image light beam can be diffracted into K visual field by correspondence, the spectators in each visual field can be observed the true 3-D view of the synthetic hologram projection frequency spectrum that comprises all pixels of 3-D view, reach the effect of true 3-D display, owing to can be intensive narrow picture by hologram image laser beam compression, and be diffracted in each visual field through corresponding diffraction element, the resolution of the 3-D view of the each visual field therefore forming is higher.

The embodiment 2 of true three-dimensional image display systems

With reference to figure 4, the embodiment 2 of true three-dimensional image display systems of the present invention comprises image source 040, optical compression device 041, optical scanner 042, hologram screen 043.Corresponding component and the structural relation thereof of each parts in the embodiment 2 of the true three-dimensional image display systems of the present invention and structural relation thereof and embodiment 1 are basic identical, and difference is only:

The embodiment 2 of true three-dimensional image display systems of the present invention also comprises reflection unit 045, this reflection unit 045 can be arranged between the emitting light path of optical scanner 042 and the input path of hologram screen 043, reflection unit 045 comprises one or more reflector elements, and each reflector element is corresponding with a diffraction element of hologram screen.The reflector element of reflection unit 045 is for receiving hologram image light beam in a narrow margin from optical scanner 042, and by the beam reflection of hologram image in a narrow margin receiving to the diffraction element of hologram screen 043 correspondence, each diffraction element of hologram screen 043 is diffracted into K row pixel (light beam) correspondence in the each row view field image light beam in the light beam of hologram image in a narrow margin receiving in K visual field.

Reflection unit 045 can be for example curved reflector.Particularly, can be the curved reflector of full wafer or segmentation.The present embodiment adopts reflection unit to reflect hologram image light beam in a narrow margin to hologram screen, because the each reflector element of reflection unit has different optical centres or is converted to directional light to the light beam of hologram screen projection, can on hologram screen 043, show the image beam of corresponding different visual fields, therefore can generate and be similar to the multi-angle projection effect that multi-projector system generates.

Alternatively, the embodiment 2 of true three-dimensional image display systems of the present invention also can comprise crevice projection angle adjusting gear 046, crevice projection angle adjusting gear 046 can be arranged between the emitting light path of optical scanner 042 and the input path of reflection unit 045, adjust so that each hologram image light beam in a narrow margin projects the corresponding reflector element of reflection unit 045 for each crevice projection angle of hologram image light beam in a narrow margin that optical scanner 042 is exported, and then project the corresponding diffraction element of hologram screen 043.

Project the angle of hologram image light beam in a narrow margin by adjusting optical scanner 042, each hologram image light beam in a narrow margin can be projected in the diffraction element of hologram screen 043 correspondence exactly, can control cost, improve display brightness, reduce the field range that on the basis of calibrating difficulty, acquisition needs.

The embodiment 3 of true three-dimensional image display systems

With reference to figure 5, the embodiment 3 of true three-dimensional image display systems of the present invention comprises image source 050, optical compression device 051, optical scanner 052, hologram screen 053, reflection unit 055, also can comprise crevice projection angle adjusting gear 056.Corresponding component and the structural relation thereof of each parts in the embodiment 3 of the true three-dimensional image display systems of the present invention and structural relation thereof and embodiment 2 are basic identical, and difference is:

True three-dimensional image display systems also comprises the segmentation projection lens group 057 between emitting light path and the hologram screen 053 that is arranged at this reflection unit 055, this segmentation projection lens group 057 can comprise one or more projection lens 0570, reflector element of each projection lens and reflection unit 055 and a diffraction element of hologram screen 053 are corresponding, and each projection lens 0570 is for being transmitted through the light beam of hologram image in a narrow margin of the corresponding reflector element output of reflection unit 055 the corresponding diffraction element of display screen 053.

The present embodiment adopts segmentation projection lens group can avoid using large scale projection lens, therefore can reduce costs and system dimension.

The embodiment 4 of true three-dimensional image display systems

As described in the embodiment 1 in true three-dimensional image display systems, corresponding to the hologram image light beam of every row pixel of 3-D view by compressed according to default sequential, scanning, finally be incident upon on hologram screen, each hologram image light beam in a narrow margin can comprise the compression spectral image of row or multiple row pixel, for example, row or multiple row pixel that comprise 3-D view in the case of every group of pixel, image source can generate at triggered time t1 the hologram image light beam of first group of pixel #1, generate the hologram image light beam of second group of pixel #2 at triggered time t2, generate the hologram image light beam of the 3rd group of pixel #3 at triggered time t3, by that analogy, the hologram image light beam that image source generates according to above-mentioned sequential can be compressed and be scanned successively, therefore may occur that, for example, when the moment (triggered time) of optical scanner in the position corresponding with each diffraction element of hologram screen, image source just projects corresponding hologram image light beam.In such cases, may be due to continuously and smoothly's motion of optical scanner, triggered time is very limited, make time shutter of image beam of corresponding each visual field very of short duration, finally cause the time shutter of each view field image very of short duration,, the visual effect of human eye cannot reach enough brightness according to time integral.A problem is in addition, image source is only just worked in the of short duration triggered time, when image source use for example can the tens thousand of width high-definition images of generation per second high speed projection engine time, just caused the serious wasting of resources.

Based on the problems referred to above, embodiment 4 and the embodiment 1 of true three-dimensional image display systems of the present invention, 2 or 3 difference is, beam processor (not shown) is also provided, beam processor can be arranged in image source, carry out combined treatment according to any two continuous hologram image light beams of this default time ordered pair, to generate " moving window " image as shown in Figure 6, such as when optical scanner is during in position corresponding between continuous two hologram image light beams (between two triggered times), image source also can project hologram image light beam continuously, every two continuous hologram image light beams export optical compression device to and compress after beam processor combines, scan through optical scanner again, make between two triggered times, the diffraction element that hologram screen is corresponding can receive hologram image light beam, extend the time shutter of image.As shown in Figure 6, describe as an example of second group of pixel #2 and the 3rd group of pixel #3 example, beam processor combines any two continuous hologram image light beams, refers to that a width hologram image light beam comprises a part for hologram image light beam of second group of pixel #2 and a part for the hologram image light beam of the 3rd group of pixel #3.

In the present embodiment, refer to according to this default sequential, for example, time from triggered time t2 arrives the process of triggered time t3 gradually, in the hologram image light beam of combination, the hologram image light beam of second group of pixel #2 tails off gradually, and the hologram image light beam of the 3rd group of pixel #3 becomes many gradually, until arrive when the second triggered time t3, the hologram image light beam that image source generates is all the hologram image light beam of the 3rd group of pixel #3, and arrive gradually in the process of triggered time t4 at triggered time t3, in the hologram image light beam of combination, the hologram image light beam of the 3rd group of pixel #3 tails off gradually, and the hologram image light beam of the 4th group of pixel #4 becomes many gradually, by that analogy.

By beam processor is set, hologram image light beam is carried out to combined treatment, not only make image source work without cessation continuously, avoid the wasting of resources, and because the cumulative exposure time of the image of each visual field greatly increases, can greatly improve the brightness of 3-D view.

The present invention also provides another kind of true three-dimensional image display systems, for K 3-D view correspondence is projected to K visual field, comprising:

Multiple projection arrangements, generate multiple hologram image light beams for correspondence, and each hologram image light beam has the image information of the H row pixel of each 3-D view, and each hologram image light beam comprises N*K row pixel;

Multiple optical compression devices, multiple optical compression devices are separately positioned on the emitting light path of multiple projection arrangements, for the horizontal width of corresponding hologram image light beam is compressed to form hologram image light beam in a narrow margin, each light beam of hologram image in a narrow margin comprises N row view field image light beam, and every row view field image light beam comprises K row pixel;

Hologram screen, comprise multiple diffraction element, multiple diffraction element correspondences are positioned on the emitting light path of multiple optical compression devices, each diffraction element covers the N row location of pixels of hologram screen, each diffraction element receives a hologram image light beam in a narrow margin for correspondence, and the K row pixel in the each row view field image light beam in the light beam of hologram image in a narrow margin receiving is diffracted in K visual field through a row location of pixels of its correspondence

Wherein, K, N are not less than 1 integer.

The embodiment 5 of true three-dimensional image display systems

With reference to figure 7, the embodiment 5 of true three-dimensional image display systems of the present invention comprises multiple projection arrangements 070, multiple optical compression device 071 and hologram screen 073.Hologram screen 073 comprises multiple diffraction element, and each diffraction element covers the N row location of pixels of hologram screen 073.Multiple optical compression devices 071 are corresponding being arranged between the emitting light path of multiple projection arrangements 070 and the input path of multiple diffraction element of hologram screen 073 respectively.

Each projection arrangement 070 can be, for example projector.Multiple projection arrangements 070 can generate multiple hologram image light beams simultaneously, and each hologram image light beam comprises the image information of a row pixel or the image information of multiple row pixel of 3-D view.

The horizontal width of the hologram image light beam that each optical compression device 071 generates for the projection arrangement 070 to corresponding carries out compressed shape and becomes the corresponding light beam of hologram image in a narrow margin.Respectively hologram image light beam comprises N row view field image light beam in a narrow margin, every row view field image light beam comprises the K row pixel of hologram image light beam, and the K row pixel (light beam) in the each row view field image light beam in each hologram image light beam is in a narrow margin diffracted in K visual field through the diffraction element of hologram screen 073 correspondence.Corresponding description in the embodiment 1 of concrete principle and true three-dimensional image display systems is similar, repeats no more.

In the present embodiment, each optical compression device 071 can comprise refracting telescope assembly, as the refracting telescope assembly of the convex lens in Fig. 7 and concavees lens composition.Optical compression device also can comprise other optical module, and for example mirror assembly or diffraction element assembly, as long as can compress light beam.Use refracting telescope assembly, mirror assembly or diffraction element assembly lower compared with cost.

In the present embodiment, multiple 070 while of projection arrangements generating holograms are as light beam, for example, multiple projection arrangements 070 simultaneously generating hologram as light beam A 2, B2, C2 ... wherein, in the situation that every group of pixel comprises row or multiple row pixel, hologram image light beam A 2 comprises the image information of first group of pixel of 3-D view, and hologram image light beam B2 comprises the image information of second group of pixel of 3-D view ... by that analogy.Above-mentioned hologram image light beam A 2, B2, C2 ... project in a narrow margin the diffraction element of hologram screen 073 correspondence after hologram image light beam through corresponding optical compression device 071 boil down to, because hologram image light beam in a narrow margin can comprise multiple row view field image light beam, every row view field image light beam can comprise multiple row pixel (light beam), the corresponding visual field of every row pixel, therefore, hologram image light beam is after corresponding diffraction element diffraction is gone out in a narrow margin, observer in different visual fields all can be observed 3-D view that should visual field, reach the object that 3-D view shows, and because hologram image light beam is compressed to hologram image light beam in a narrow margin, hologram screen can carry out diffraction to the light beam of dense-pixel, there is higher resolution.

The present invention also provides a kind of true three-dimensional image display method, utilizes the embodiment 1,2,3 or 4 of above-mentioned true three-dimensional image display systems that K 3-D view correspondence is projected in K visual field, comprising:

Image generates step: at least one image source generates multiple hologram image light beams according to default sequential;

Optical compression step: optical compression device compresses to form hologram image light beam in a narrow margin to the horizontal width of each hologram image light beam;

Optical scanning step: optical scanner by each hologram image beam flying in a narrow margin to diffraction element corresponding to hologram screen;

Beam diffraction step: each diffraction element of hologram screen receives each hologram image light beam in a narrow margin and the K row pixel in the each row view field image light beam in the light beam of hologram image in a narrow margin receiving is diffracted in K visual field through its N row location of pixels correspondence respectively according to default sequential.

Alternatively, generate between step and optical compression step and also comprise at image, combination step: two hologram image light beams of ordered pair arbitrary continuation carry out combined treatment when default.

Alternatively, between optical scanning step and beam diffraction step, also comprise reflection steps: the beam reflection of hologram image in a narrow margin that optical scanner is exported is to diffraction element corresponding to hologram screen.

Alternatively, between optical scanning step and reflection steps, also comprise crevice projection angle set-up procedure: the each crevice projection angle of hologram image light beam in a narrow margin to optical scanner output is adjusted.

Alternatively, between reflection steps and beam diffraction step, also comprise transmission step: by comprising that the segmentation projection lens group of L projection lens is transmitted through the light beam of hologram image in a narrow margin of reflection L diffraction element of hologram screen accordingly.

The embodiment 1 of true three-dimensional image display method

With reference to figure 8, the embodiment 1 of the true three-dimensional image display method of the present invention comprises the following steps:

Image generates step S081: this at least one image source generates multiple hologram image light beams according to default sequential.Each hologram image light beam comprises row or the image information of multiple row pixel of the 3-D view of a corresponding K visual field, for example: first hologram image light beam comprises the synthetic hologram projection frequency spectrum of first group of pixel of the 3-D view of the synthetic hologram projection frequency spectrum of first group of pixel of the 3-D view of the synthetic hologram projection frequency spectrum of first group of pixel of the 3-D view of corresponding the first visual field, corresponding the second visual field, corresponding the 3rd visual field successively ... the synthetic hologram projection frequency spectrum of first group of pixel of the 3-D view of corresponding K visual field; Second hologram image light beam comprises the synthetic hologram projection frequency spectrum of second group of pixel of the 3-D view of the synthetic hologram projection frequency spectrum of second group of pixel of the 3-D view of corresponding the first visual field, corresponding the second visual field successively ... the synthetic hologram projection frequency spectrum of second group of pixel of the 3-D view of corresponding K visual field; By that analogy.The horizontal width of supposing hologram image light beam is N*K, visual field number K as required, and each hologram image light beam can comprise N group view field image light beam, and every group of view field image light beam comprises K row pixel, and this K row pixel is corresponding to this K visual field.

Image generates in step, can generate above-mentioned multiple hologram image light beam at a high speed with above-mentioned default sequential circulation by high speed projection engine, for example, and can tens thousand of hologram image light beams of generation per second.This default sequential can be, and for example, generating hologram is as sequencing and the time interval of light beam.

Optical compression step S083: optical compression device compresses to form hologram image light beam in a narrow margin to the horizontal width of each hologram image light beam.This step generate respectively in a narrow margin hologram image light beam comprise N row view field image light beam, every row view field image light beam comprises the K row pixel of hologram image light beam.

Optical scanning step S085: optical scanner by each hologram image beam flying in a narrow margin to diffraction element corresponding to hologram screen.In this step, optical scanner can be according to this default sequential by hologram image beam flying in a narrow margin to the diffraction element of hologram screen, for example, by first in a narrow margin hologram image beam flying to first diffraction element, by second hologram image beam flying to the second diffraction element in a narrow margin ... concrete example is described in the embodiment 1 of true three-dimensional image display systems, repeats no more.

Beam diffraction step S089: each diffraction element of hologram screen receives each hologram image light beam in a narrow margin and the K row pixel of the N row view field image light beam in the light beam of hologram image in a narrow margin receiving is diffracted in this K visual field through its N row location of pixels (imaging point) correspondence respectively according to this default sequential.

Described at Fig. 1 and Fig. 2, each diffraction element can comprise one or more imaging points (each imaging point covers a row location of pixels of hologram screen), and one or more imaging points of each diffraction element can be diffracted into 1 row in hologram image light beam in a narrow margin or the K row pixel (light beam) of multiple row view field image light beam in K visual field.

The true three-dimensional image display method that the present embodiment provides by image source according to default sequential generating hologram as light beam, each hologram image light beam comprises row of 3-D view or the image information of the corresponding each visual field of multiple row pixel, be compressed in a narrow margin and be scanned up to the diffraction element that hologram screen is corresponding after hologram image light beam, and after hologram image light beam is compressed, K row pixel in its every row view field image light beam can be diffracted into K visual field by correspondence, the spectators in each visual field can be observed the true 3-D view of the synthetic hologram projection frequency spectrum that comprises all pixels of 3-D view, reach the effect of true 3-D display, owing to can be intensive narrow picture by hologram image laser beam compression, and be diffracted in each visual field through corresponding diffraction element, the resolution of the 3-D view of the each visual field therefore forming is higher.

The embodiment 2 of true three-dimensional image display method

With reference to figure 9, the embodiment 2 of true three-dimensional image display method of the present invention is substantially the same manner as Example 1, in embodiment 2, true three-dimensional image display method of the present invention comprises that image generates step S091, optical compression step S093, optical scanning step S095 and beam diffraction step S099, the difference of itself and embodiment 1 is, generates between step S091 and optical compression step S093 and also comprises at image:

Combination step S092: when default according to this ordered pair arbitrarily continuous two hologram image light beams carry out combined treatment.This step can generate " moving window " as shown in Figure 6, specifically please refer to the description of the embodiment 5 to true three-dimensional image display systems, does not repeat them here., in step S092, the hologram image light beam after combination is compressed and forms hologram image light beam in a narrow margin.

In this way, avoid the wasting of resources, and can greatly improve the brightness of 3-D view on display screen.

The embodiment 3 of true three-dimensional image display method

With reference to Figure 10, the embodiment 3 of true three-dimensional image display method of the present invention is basic identical with embodiment 1 or 2, in embodiment 3, true three-dimensional image display method of the present invention comprises that image generates step S101, optical compression step S103, optical scanning step S105, beam diffraction step S109, also can comprise combination step 102, the difference of itself and embodiment 1 or 2 is, between optical scanning step S105 and beam diffraction step S109, also comprises:

Reflection steps S107: each hologram image beam reflection in a narrow margin of optical scanner being exported by L reflector element of reflection unit (as the reflection unit 045 in Fig. 4) is to diffraction element corresponding to hologram screen.

The light beam of scanning can have different optical centres or be converted to directional light after each reflector element reflection, therefore can generate and be similar to the multi-angle projection effect that multi-projector system generates.

Alternatively, between optical scanning step S105 and reflection steps S107, also can comprise:

Crevice projection angle set-up procedure S106: the each crevice projection angle of hologram image light beam in a narrow margin to optical scanner output is adjusted, so that each hologram image light beam in a narrow margin projects the reflector element that reflection unit is corresponding, and then project the diffraction element that hologram screen is corresponding., in reflection steps S107, be to adjust the crevice projection angle beam reflection of hologram image in a narrow margin afterwards to diffraction element corresponding to hologram screen.

By crevice projection angle set-up procedure S106, the K row pixel (light beam) of the each row view field image light beam in each hologram image light beam in a narrow margin can be projected in the diffraction element that hologram screen is corresponding exactly, therefore can adjust neatly the projecting direction of light beam, and then adjustment field range, can control cost, improve display brightness, reduce the field range that on the basis of calibrating difficulty, acquisition needs.

The embodiment 4 of true three-dimensional image display method

With reference to Figure 11, the embodiment 4 of true three-dimensional image display method of the present invention is substantially the same manner as Example 3, in embodiment 4, true three-dimensional image display method of the present invention comprises that image generates step S111, optical compression step S1113, optical scanning step S115, reflection steps S117, beam diffraction step S119, also can comprise crevice projection angle set-up procedure S116, the difference of itself and embodiment 3 is, between reflection steps S117 and beam diffraction step S119, also comprises:

Transmission step S118: L the diffraction element that accordingly light beam of hologram image in a narrow margin reflecting in reflection steps S117 is transmitted through to hologram screen by L projection lens of segmentation projection lens group.

The present invention also provides another kind of true three-dimensional image display method, utilizes the embodiment 5 of above-mentioned true three-dimensional image display systems that K 3-D view correspondence is projected in K visual field, comprises the following steps:

Image generates step: the plurality of hologram image light beam of the corresponding generation of multiple projection arrangements;

Optical compression step: multiple optical compression devices compress to form respectively hologram image light beam in a narrow margin to the horizontal width of corresponding hologram image light beam;

Beam diffraction step: the corresponding light beam of hologram image in a narrow margin that receives the plurality of optical compression device output of multiple diffraction element of hologram screen, and the K row pixel of the each row view field image light beam in the light beam of hologram image in a narrow margin receiving is diffracted in K visual field through a row location of pixels of its correspondence.The embodiment 5 of true three-dimensional image display method

With reference to Figure 12, the embodiment 5 of true three-dimensional image display method of the present invention comprises the following steps:

Image generates step S121: the multiple hologram image light beams of the corresponding generation of multiple projection arrangements.Each hologram image light beam that this step generates comprises the image information of one group of pixel (row or a multiple row pixel) of K 3-D view of a corresponding K visual field, each hologram image light beam comprises N row view field image light beam, and every row view field image light beam comprises the K row pixel of hologram image light beam.

For example: the hologram image light beam that first projection arrangement generates comprises first row view field image light beam, secondary series view field image light beam successively ... N row view field image light beam, and every row view field image light beam comprises the image information of one group of pixel of image information, second 3-D view (projecting the 3-D view of second visual field) of first group of pixel of the first 3-D view (projecting the 3-D view of first visual field) successively ... the image information of first group of pixel of K 3-D view (projecting the 3-D view of the 3rd visual field);

The hologram image light beam of second projection arrangement generation comprises first row view field image light beam, secondary series view field image light beam successively ... N row view field image light beam, and every row view field image light beam comprises the image information of two groups of pixels of image information, second 3-D view (projecting the 3-D view of second visual field) of second group of pixel of the first 3-D view (projecting the 3-D view of first visual field) successively ... the image information of second group of pixel of K 3-D view (projecting the 3-D view of the 3rd visual field)

By that analogy.

Optical compression step S123: the horizontal width of the hologram image light beam that each optical compression device generates corresponding projection arrangement compresses and forms hologram image light beam in a narrow margin.The individual light beam of hologram image in a narrow margin comprises N row view field image light beam, and every row view field image light beam comprises the K row pixel of hologram image light beam, and this K row pixel is to should K visual field.

Beam diffraction step S129: each diffraction element of hologram screen receives the corresponding light beam of hologram image in a narrow margin, and the K row pixel of the each row view field image light beam in the light beam of hologram image in a narrow margin receiving is diffracted in K visual field through a row location of pixels (imaging point) of its correspondence.For example, diffraction element can cover row or a multiple row location of pixels (being that diffraction element has one or more imaging points) of hologram screen, the K row pixel of the first row view field image light beam of hologram image light beam is in a narrow margin diffracted into K visual field by first imaging point, the K row pixel of the secondary series view field image light beam of hologram image light beam is in a narrow margin diffracted into K visual field by second imaging point ... the quantity of the imaging point that by that analogy, each diffraction element has is that the horizontal width (columns of pixel) of hologram image light beam is divided by the visual field number of setting.

Hologram image light beam is after corresponding diffraction element diffraction is gone out in a narrow margin, observer in different visual fields all can be observed 3-D view that should visual field, reach the object that 3-D view shows, and because hologram image light beam is compressed to hologram image light beam in a narrow margin, hologram screen can carry out diffraction to the light beam of dense-pixel, has higher resolution.

Current binocular solid optometric technology, parallel shading light gate technique, cylindrical mirror technology and integrated display technique all exist various defects, such as display size is little, visual field quantity is few, resolution is low, brightness is low, the low deficiency of sharpness etc.And although the true three-dimensional image display systems of the light field of multi-projector has the potential quality that obtains large visual field, but there is between projector calibration difficulties and the intrinsic defect such as expensive, corresponding with it, true three-dimensional image display systems and true three-dimensional image display method that the present invention proposes have advantages of that one or more are unique:

1, simple in structure, can be only with for example high speed projector of separate unit image source;

2, high definition resolution, the image of each visual field is high-definition image;

3, low cost, can be only with separate unit image source and cheap optical element, and its cost is significantly less than multi-projector;

4, visual field number can reach dozens of, has effectively improved 3-D display quality and has not increased system cost;

5, high brightness, the design realizes the effect of multi-projector projection and does not lose brightness;

6, calibration is convenient, and a major defect of traditional multi-projector system is to be difficult to calibration, and present design has overcome this defect;

7, hologram screen size can be adjusted flexibly, is convenient to different application demands;

8, can realize authentic color three dimension and show.Adopt RGB three-color light source, project respectively Red Green Blue (or other can generate the color scheme of color true to nature), the display after synthesizing just can generate the true 3-D display of authentic colour.

In apparatus and method of the present invention, obviously, each parts or each step reconfigure after can decomposing, combine and/or decomposing.These decomposition and/or reconfigure and should be considered as equivalents of the present invention.Simultaneously, in the above in the description of the specific embodiment of the invention, describe and/or the feature that illustrates can be used in same or similar mode in one or more other embodiment for a kind of embodiment, combined with the feature in other embodiment, or substitute the feature in other embodiment.

Should emphasize, term " comprises/comprises " existence that refers to feature, key element, step or assembly while use herein, but does not get rid of the existence of one or more further feature, key element, step or assembly or add.

Although described the present invention and advantage thereof in detail, be to be understood that in the case of not exceeding the spirit and scope of the present invention that limited by appended claim and can carry out various changes, alternative and conversion.And scope of the present invention is not limited only to the specific embodiment of the described process of instructions, equipment, means, method and step.One of ordinary skilled in the art will readily appreciate that from disclosure of the present invention, can use the essentially identical function of corresponding embodiment or process, equipment, means, method or the step acquisition result essentially identical with it, that existing and will be developed future carried out with at this according to the present invention.Therefore, appended claim is intended to comprise such process, equipment, means, method or step in their scope.

Claims (14)

1. a true three-dimensional image display systems, for K 3-D view correspondence is projected to K visual field, is characterized in that, comprising:

At least one image source, for generate multiple hologram image light beams with the sequential of presetting, each hologram image light beam has the image information of the H row pixel of each described 3-D view, and each hologram image light beam comprises N*K row pixel;

Optical compression device, be arranged on the emitting light path of described at least one image source, for the horizontal width of each described hologram image light beam is compressed to form hologram image light beam in a narrow margin, each light beam of hologram image in a narrow margin comprises N row view field image light beam, and every row view field image light beam comprises the K row pixel that corresponds respectively to K visual field;

Hologram screen, comprise L diffraction element, each diffraction element covers the N row location of pixels of described hologram screen, each described diffraction element for receive according to described default sequential each described in hologram image light beam in a narrow margin, and the K row pixel in the each row view field image light beam in the light beam of hologram image in a narrow margin receiving is diffracted in a described K visual field through its N row location of pixels correspondence respectively;

Optical scanner, for by described in each in a narrow margin hologram image beam flying to diffraction element corresponding to described hologram screen,

Wherein, described H, N, K, L are the integer that is not less than 1.

2. true three-dimensional image display systems according to claim 1, is characterized in that, described image source comprises beam processor, for according to described when default two hologram image light beams of ordered pair arbitrary continuation carry out combined treatment.

3. true three-dimensional image display systems according to claim 1, is characterized in that, each described optical compression device comprises refracting telescope assembly, mirror assembly or diffraction element assembly.

4. according to the true three-dimensional image display systems described in claim 1-3 any one, it is characterized in that, also comprise reflection unit, described reflection unit comprises L reflector element, a described L reflector element is corresponding with L diffraction element of described hologram screen, each reflector element for from described optical scanner corresponding receive one in a narrow margin hologram image light beam and by the beam reflection of hologram image in a narrow margin receiving to diffraction element corresponding to described hologram screen.

5. true three-dimensional image display systems according to claim 4, it is characterized in that, also comprise crevice projection angle adjusting gear, adjust to the crevice projection angle of described reflection unit for the each hologram image light beam in a narrow margin to described optical scanner output, so that each described each hologram image light beam in a narrow margin projects the reflector element that described reflection unit is corresponding.

6. true three-dimensional image display systems according to claim 5, it is characterized in that, also comprise segmentation projection lens group, be arranged between the emitting light path of described reflection unit and the input path of hologram screen, described segmentation projection lens group comprises L projection lens, and a described L projection lens is transmitted through L diffraction element of described hologram screen for the corresponding light beam of hologram image in a narrow margin by the L of described reflection unit reflector element reflection.

7. a true three-dimensional image display systems, for K 3-D view correspondence is projected to K visual field, is characterized in that, comprising:

Multiple projection arrangements, generate multiple hologram image light beams for correspondence, and each hologram image light beam has the image information of the H row pixel of each described 3-D view, and each hologram image light beam comprises N*K row pixel;

Multiple optical compression devices, described multiple optical compression device is separately positioned on the emitting light path of described multiple projection arrangements, for the horizontal width of corresponding hologram image light beam is compressed to form hologram image light beam in a narrow margin, each light beam of hologram image in a narrow margin comprises N row view field image light beam, and every row view field image light beam comprises K row pixel;

Hologram screen, comprise multiple diffraction element, described multiple diffraction element correspondence is positioned on the emitting light path of described multiple optical compression devices, each diffraction element covers the N row location of pixels of described hologram screen, each diffraction element receives a hologram image light beam in a narrow margin for correspondence, and the K row pixel in the each row view field image light beam in the light beam of hologram image in a narrow margin receiving is diffracted in a described K visual field through a row location of pixels of its correspondence

Wherein, described K, N are not less than 1 integer.

8. true three-dimensional image display systems according to claim 7, is characterized in that, each described optical compression device comprises refracting telescope assembly, mirror assembly or diffraction element assembly.

9. a true three-dimensional image display method, utilizes the true three-dimensional image display systems described in claim 1-6 any one that described K 3-D view correspondence is projected in a described K visual field, it is characterized in that, comprising:

Image generates step: described at least one image source generates described multiple hologram image light beams according to default sequential;

Optical compression step: described optical compression device compresses to form hologram image light beam in a narrow margin to the horizontal width of each described hologram image light beam;

Optical scanning step: described optical scanner by described in each in a narrow margin hologram image beam flying to diffraction element corresponding to described hologram screen;

Beam diffraction step: the each described diffraction element of described hologram screen according to described default sequential receive each described in hologram image light beam the K row pixel in the each row view field image light beam in the light beam of hologram image in a narrow margin receiving is diffracted in a described K visual field through its N row location of pixels correspondence respectively in a narrow margin.

10. true three-dimensional image display method according to claim 9, is characterized in that, generates between step and optical compression step and also comprises at described image:

Combination step: according to described when default two hologram image light beams of ordered pair arbitrary continuation carry out combined treatment.

11. according to the true three-dimensional image display method described in claim 9 or 10, it is characterized in that, between described optical scanning step and beam diffraction step, also comprises:

Reflection steps: by extremely diffraction element corresponding to described hologram screen of the beam reflection of hologram image in a narrow margin of described optical scanner output.

12. true three-dimensional image display methods according to claim 11, is characterized in that, between described optical scanning step and reflection steps, also comprise:

Crevice projection angle set-up procedure: the each crevice projection angle of hologram image light beam in a narrow margin to described optical scanner output is adjusted.

13. true three-dimensional image display methods according to claim 11, is characterized in that, between described reflection steps and beam diffraction step, also comprise:

Transmission step: by comprising that the segmentation projection lens group of L projection lens is transmitted through the light beam of hologram image in a narrow margin of reflection L diffraction element of described hologram screen accordingly.

14. 1 kinds of true three-dimensional image display methods, utilize the true three-dimensional image display systems described in claim 7 or 8 that described K 3-D view correspondence is projected in a described K visual field, it is characterized in that, comprising:

Image generates step: the described multiple hologram image light beams of the corresponding generation of described multiple projection arrangements;

Optical compression step: described multiple optical compression devices to the horizontal width of corresponding hologram image light beam compress to form each described in hologram image light beam in a narrow margin;

Beam diffraction step: the corresponding light beam of hologram image in a narrow margin that receives described multiple optical compression device outputs of multiple diffraction element of described hologram screen, and the K row pixel of the each row view field image light beam in the light beam of hologram image in a narrow margin receiving is diffracted in a described K visual field through a row location of pixels of its correspondence.

Images