CN207541416U - A kind of calculating hologram three-dimensional display device that can represent reproduction image hiding relation - Google Patents
A kind of calculating hologram three-dimensional display device that can represent reproduction image hiding relation Download PDFInfo
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- CN207541416U CN207541416U CN201721771471.8U CN201721771471U CN207541416U CN 207541416 U CN207541416 U CN 207541416U CN 201721771471 U CN201721771471 U CN 201721771471U CN 207541416 U CN207541416 U CN 207541416U
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Abstract
The utility model discloses a kind of calculating hologram three-dimensional display device that can represent reproduction image hiding relation, belong to calculating holography and Three-dimensional Display field, more particularly to a kind of calculating hologram three-dimensional display device, the mode of tissue points is reproduced come the intensity of accuracy controlling tissue points using spatial light modulator loading computed hologram, position coordinates and the direction of propagation, tissue points each on the elementary hologram corresponding hologram gray scale of information that is blocked is set as a fixed value, so as to the hiding relation of Correct tissue points, three-dimension dynamical display can be realized by refreshing loading computed hologram with reference to spatial light modulator array, application for hologram three-dimensional display technology provides realistic plan, it is fast with refresh rate, it being capable of Correct three-dimension object reproduction image hiding relation, it can represent full parallax, the features such as no visual is tired.
Description
Technical field
The utility model belongs to calculating holography and Three-dimensional Display field, and in particular to a kind of calculating hologram three-dimensional display dress
It puts.
Background technology
It calculates hologram three-dimensional display and is used as most promising true Three-dimensional Display mode, be holography and Computer display skill
The combination of art, it utilizes spatial light modulator load capacity calculation hologram, the wave surface of incident light is modulated, Jin Erguang
Electricity reconstruct shows 3-D view.Constantly refresh loading computed hologram using spatial light modulator, realize hologram three-dimensional video
It has been shown that, this is the important goal of modern display technology development.But lock into space-time bandwidth product deficiency of spatial light modulator etc.
Factor, hologram three-dimensional video is shown still cannot be introduced into the application stage at present.More effective solution is to use at this stage
The spatial light modulator array of high frame frequency carries out the connection scheme of space-time multiplexing.Nineteen ninety-five N.Fukaya et al. utilizes semi-transparent semi-reflecting
It is seamless spliced that mirror realizes 3 amplitude type LCD, so as to obtain larger field angle.Group K.Maeno in 1996 et al. again will
The LCD quantity of splicing increases to 5 from 3.J.Hahn in 2008 et al. by by 12 spatial light modulator oblique arrangements into
One circular arc, realizes the seamless spliced of spatial light modulator, obtains 22.8 ° of field angle.F.Yaras in 2011 et al. makes
The method spliced is tilted with 9 spatial light modulators, and the gap between spatial light modulator is eliminated using semi-transparent semi-reflecting lens,
The field angle of reproduction image is expanded, obtains size as 10mm, field angle is 24 ° of holographic reconstructed image.H.Sasaki in 2014
Et al. realize that diagonal-size is 85mm, horizontal view angle is 5.6 °, refreshing frequency is using the splicing of 16 spatial light modulators
The dynamic holographic Three-dimensional Display of 20Hz.Univ cambridge uk Rick H-Y Chen in 2009 are based on single spatial light modulator time-division
Multiple hologram sequential are loaded into monolithic amplitude type spatial light modulator by the method for multiplexing, with multi-angle illumination light according to
The each multi-view image projected by subsequent optical path is fitted to together, utilized by corresponding time-sequential illumination spatial light modulator
The persistence of vision of human eye just can observe 3-D view in certain angular field of view.In such scheme, the either time spells
It connects or space is spliced, visual angle can be widened to a certain extent, increase space-time bandwidth product.But it calculates hologram three-dimensional and shows
In by occlusion effect provide mobile parallax tend to be ignored.Although the holography based on holographic cell (Hogel) principle is stood
Body figure can be easily carried out occlusion effect, so as to provide mobile parallax, but such scheme record and reproduce be by
The two-dimensional image information of various visual angles, so holographic stereogram is difficult all three-dimensional perception provided needed for human eye, especially depth
It adjusts.Therefore, it seeks and is capable of the calculating hologram three-dimensional display methods of Correct reproduction image hiding relation and becomes particularly important.
K.Matsushima in 2009 et al. is proposed to represent hiding relation using consistency profiles, the hiding relation of three-dimensional scenic is reduced to
The hiding relation of several two dimensional surfaces, so as to calculate the full disparity computation hologram that can represent occlusion effect.But this
The occlusion effect that class method is only applicable to simple three-dimensional scenic represents, such as a three-dimension object and put down with a two-dimensional background
Face.For arbitrary three-dimensional scenic, this method its hiding relation beyond expression of words.Univ cambridge uk Rick H-Y in 2009
Chen et al., which proposes to calculate by way of creating and blocking list, can represent occlusion effect and the hologram of mobile parallax, but
It is that this method needs to carry out two-dimensional interpolation calculating, this can not only increase computation complexity, can also bring error.Beijing reason in 2009
Work university Zhang Hao et al. proposes the hiding relation representation method based on ray tracing, by light common in hidden surface elimination algorithm
Tracking method calculates for hologram, obtains the better quality holographic reconstructed image that can represent occlusion effect.This method needs
Each sample point pixel projection goes out one group of light from hologram, calculates the nearest intersection point of every throw light and three-dimensional scenic
Determine contribution of the three-dimensional scenic to the sample point, this can not only increase calculation amount, but also for the three-dimensional scenic of larger depth
It is difficult to Precise Representation its hiding relation.It is disclosed in Chinese patent CN103997636 A within 2014 a kind of based on upright projection
Hiding relation representation method before and after three-dimension object reproduction image, by performing upright projection process to hologram difference sampling area,
Eliminate the corresponding block information of each sub-hologram.But for the three-dimension object of arbitrary irregular shape, resolve into two-dimentional throwing
The redundancy of information content and information after shadow figure will greatly increase, and for the expression essence of three-dimension object reproduction image hiding relation
Exactness also needs to be further improved.
In short, the existing calculating hologram three-dimensional display technology that can represent reproduction image hiding relation and not perfect, towards
The hologram three-dimensional of dynamic video shows even more difficult.For such case, the technical program proposes a kind of based on voxel
The calculating hologram three-dimensional display device of spot scan, it is intended to which the calculating holography dynamic 3 D of reproduction image hiding relation can be represented by realizing
Display.
Utility model content
The purpose of this utility model provides a kind of calculating hologram three-dimensional display device that can represent reproduction image hiding relation.
Based on the principle of body Three-dimensional Display voxel spot scan, overcome in existing calculating hologram three-dimensional display technology space-bandwidth product it is insufficient,
Hiding relation accuracy is not high, is difficult to realize the shortcomings of three-dimension dynamical display, it is intended to design the energy based on spatial light modulator
Enough represent the calculating holography three-dimension dynamical display system of three-dimension object reproduction image hiding relation.
For realization more than technical purpose, the technical program is as follows：A kind of calculating that can represent reproduction image hiding relation is complete
Cease three-dimensional display apparatus：
A kind of calculating hologram three-dimensional display device that can represent reproduction image hiding relation, by light source, spatial light modulator
Composition, the light that the light source is sent out are incident to spatial light modulator, and reproduction light is provided for the entire hologram three-dimensional display device that calculates,
The three-dimension object computed hologram being made of the elementary hologram of tissue points is loaded in the spatial light modulator, wherein when
When shelter is opaque, the corresponding hologram gray scale of the information that is blocked of tissue points is zero in the three-dimension object computed hologram.
The calculating hologram three-dimensional display methods of the expression reproduction image hiding relation of above-mentioned three-dimensional display system is specifically used,
Include the following steps：
1) design units hologram step：Three-dimension object is resolved into a series of tissue points, the tissue points are three-dimensional
The minimum composition unit of object, it is saturating according to the intensity of each tissue points, the corresponding digital Fresnel of each tissue points of Position Design
Mirror, the digital Fresnel lens, that is, elementary hologram；
2) information Step that is blocked is cut：The biography of each tissue points is determined according to the hiding relation between each tissue points
Direction is broadcast, by representing hiding relation into line program cutting to elementary hologram；The program is cut into：When shelter not
When transparent, then by the corresponding hologram gray scale zero setting of the information that is blocked of each tissue points on the elementary hologram；
3) three-dimension object computed hologram synthesis step：The corresponding primitive of each tissue points for forming three-dimension object is holographic
Figure one complete three-dimension object computed hologram of synthesis, the three-dimension object computed hologram include all voxels of three-dimension object
Point information can accurately represent the hiding relation of reproduction image；
4) reconstruction of hologram step：Under the conditions of parallel light, the three-dimension object comprising the information that is blocked is calculated complete
Breath figure loading is in spatial light modulator；
5) sequential refresh step：Spatial light modulator constantly refreshes the loading three-dimension object computed hologram, timesharing
Reproduce the three-dimensional reconstruction picture with occlusion effect.
Due to the use of the technical program, in three-dimension object computed hologram, will directly be blocked by opaque shelter
The corresponding hologram part gray scale of tissue points be set as zero, this zero setting technique is obtained by way of digital processing,
Corresponding number can be zeroed in three-dimension object computed hologram very easily according to practical hiding relation；Complete
When breath reproduces, the hologram that reproduction light is zeroed out by these, which will be shown, and practical hiding relation is corresponding blocks effect
Fruit.Compared with prior art, a kind of calculating hologram three-dimensional that can represent reproduction image hiding relation that the technical program provides is shown
Showing device has the following advantages：
1st, digital Fresnel lens is loaded come the intensity of accuracy controlling tissue points, position and propagation using spatial light modulator
Direction shows so as to fulfill the calculating hologram three-dimensional that can represent reproduction image hiding relation；
2nd, tissue points direction propagation is controlled in a manner that program cuts digital Fresnel lens, according to each during cutting
The hiding relation of tissue points determines cutting mode, one-dimensional can cut, can also two dimension cut, can also may be used with horizontal resection
Vertically to cut, and horizontal resection, vertical cutting, two dimension cutting correspond to horizontal motion parallax, vertical motion parallax, entirely respectively
Parallax, therefore the 3 D displaying method in the technical program can realize full parallax Three-dimensional Display；
3rd, divide the principle of spacescan based on tissue points, multiple spatial light modulator composition spaces can be spliced by space
Light modulator arrays improve space-bandwidth product, and computed hologram is loaded using spatial light modulator array fast refresh, can be with
Realize dynamic holographic Three-dimensional Display；
4th, the 3 D displaying method in the technical program is a kind of true 3 D displaying method, and the stereo-picture of formation is that have
The real tri-dimension image of actual physical depth, will not cause two set and focal adjustments it is inconsistent, without stereos copic viewing
Visual fatigue.
Description of the drawings
Fig. 1 is the schematic diagram of the digital Fresnel lens reproduction tissue points after cutting under the conditions of parallel light；
Fig. 2 is the schematic diagram of digital Fresnel lens reproduction tissue points under the conditions of parallel light；
Fig. 3 is under the conditions of parallel light, is reproduced by the computed hologram that digital Fresnel lens and digital raster synthesize
The schematic diagram of tissue points；
Fig. 4 is under the conditions of parallel light, the calculating synthesized by the digital Fresnel lens after cutting and digital raster is complete
Breath figure reproduces the schematic diagram of tissue points；
Fig. 5 is for parallel light and in the optical path under conditions of one lens of postposition, the digital Fresnel lens after cutting
Reproduce the schematic diagram of tissue points；
Fig. 6 is under Convergent Laser Beam lighting condition, and the digital Fresnel lens after cutting reproduces the schematic diagram of tissue points；
Fig. 7 is saturating by the digital Fresnel after cutting for parallel light and in the optical path under conditions of one lens of postposition
Mirror and the computed hologram of digital raster synthesis reproduce the schematic diagram of tissue points；
Fig. 8 is the meter that is synthesized by the digital Fresnel lens after cutting and digital raster under Convergent Laser Beam lighting condition
Calculate the schematic diagram of hologram reconstruction tissue points；
Fig. 9 is to be spliced into spatial light modulator array realization using multiple spatial light modulators to represent three-dimension object again
The flow chart that the calculating hologram three-dimensional of phenomenon hiding relation is shown；
Figure 10 is under Convergent Laser Beam lighting condition, and spatial light modulator is spliced into using multiple spatial light modulator spaces
Array realization can represent the system schematic that the calculating hologram three-dimensional of three-dimension object reproduction image hiding relation is shown；
Wherein, xyz is rectangular coordinate system in space, 1- spatial light modulators, 2- spatial light modulator array, 3- lens.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and embodiments：
Embodiment one：A kind of calculating hologram three-dimensional display device that can represent reproduction image hiding relation, by light source, space
Optical modulator forms, and the light that the light source is sent out is incident to spatial light modulator, is carried for the entire hologram three-dimensional display device that calculates
For reproducing light, it is loaded in the spatial light modulator and holography is calculated by the three-dimension object that the elementary hologram of tissue points forms
To scheme, the corresponding hologram gray scale of the information that is blocked of tissue points is a fixed value in the three-dimension object computed hologram, wherein when
When shelter is opaque, then by the corresponding hologram gray scale of the information that is blocked of each tissue points on the elementary hologram
It is zero.
Using the calculating hologram three-dimensional display methods that can represent reproduction image hiding relation of above system, including following step
Suddenly：
1) design units hologram step：Three-dimension object is resolved into a series of tissue points, the tissue points are three-dimensional
The minimum composition unit of object, it is saturating according to the intensity of each tissue points, the corresponding digital Fresnel of each tissue points of Position Design
Mirror refers to luminous intensity as elementary hologram, intensity herein, for characterizing the luminance information of the tissue points on three-dimension object；
2) information Step that is blocked is cut：The biography of each tissue points is determined according to the hiding relation between each tissue points
Direction is broadcast, by realizing hiding relation into line program cutting to elementary hologram, program cutting is holographic in the primitive
The corresponding hologram gray scale of the information that is blocked of each tissue points is set as a fixed value on figure, wherein the information correspondence that is blocked
Hologram be interpreted as a part of region on the corresponding elementary hologram of tissue points, when shelter is opaque, then in institute
By the corresponding hologram gray scale zero setting of the information that is blocked of each tissue points on the elementary hologram stated；When shelter is saturating for part
When bright, then the corresponding hologram gray scale of the information that is blocked of each tissue points be set as one on the elementary hologram and consolidated
Definite value, the size of the fixed value depend on the transmitance of shelter；
3) three-dimension object computed hologram synthesis step：The corresponding primitive of each tissue points for forming three-dimension object is holographic
Figure one complete three-dimension object computed hologram of synthesis, the three-dimension object computed hologram include all voxels of three-dimension object
Point information can accurately represent the hiding relation of reproduction image；
4) reconstruction of hologram step：Under the conditions of parallel light, the three-dimension object comprising the information that is blocked is calculated complete
Breath figure loading in spatial light modulator 1, along with spatial light modulator constantly refresh the loading three-dimension object calculate it is complete
Breath figure, can with timesharing obtain a series of three-dimensional reconstruction pictures with occlusion effect, so as to fulfill that can represent that reproduction image is blocked
The calculating holography three-dimension dynamical display of relationship.
As shown in Figure 1, digital Fresnel lens is by encoding obtained point-source hologram, alternatively referred to as primitive is holographic
Figure has the characteristic of program-controlled zoom.It can be with longitudinal position of accuracy controlling tissue points by the focal length f for changing digital Fresnel lens
It puts, i.e. z directions position.As shown in Fig. 2, the phase information that digital Fresnel lens provides is represented by：
Wherein λ represents lambda1-wavelength, and f represents the focal length of digital Fresnel lens.The digital Fresnel lens of program cutting
It is by encoding the information removing that will be blocked, only retains the necessary information after blocking, the operation in program is that setting hides
Keep off the gray value of this corresponding partial holograms of information, when shelter is opaque, the then corresponding hologram of the information that will be blocked
Gray scale zero setting；When shelter is partially transparent, then the corresponding hologram gray scale of the information that is blocked of tissue points is set as one
Fixed value sets the size of the fixed value according to the transmitance of shelter.By taking one-dimensional square as an example, if uncut number is luxuriant and rich with fragrance
The one-dimensional square pixel number of alunite ear lens is M, and the observation visual angle of the tissue points reproduced is θ, the digital Fresnel after cutting
The one-dimensional square pixel number of lens isWherein n is the block count of remaining digital Fresnel lens after cutting, βiFor
The pixel number of remaining i-th block number word Fresnel lens accounts for the proportionality coefficient of total pixel when not cutting, and have after cuttingThen the observation visual angle for the tissue points that the digital Fresnel lens after cutting reproduces isI.e. again
The direction of propagation of existing tissue points is controlled in this angular range, so as to fulfill the direction propagation of tissue points is reproduced.Carrying out three
During dimension display, the direction of propagation of tissue points is determined according to the hiding relation of each tissue points, and then determines that digital Fresnel is saturating
The cutting mode of mirror one-dimensional can be cut, and two-dimentional can also be cut, can also can vertically be cut with horizontal resection, and horizontal
Cutting, vertical cutting, two dimension cutting correspond to horizontal motion parallax, vertical motion parallax, full parallax, therefore the utility model respectively
In 3 D displaying method can realize full parallax Three-dimensional Display.Cutting herein only needs loading in spatial light modulator
During digital Fresnel lens, according to the hiding relation between tissue points, setting tissue points are blocked the corresponding hologram ash of information
Angle value, so as to which the three-dimensional visual sense with occlusion effect can be obtained in reproduction image.
Embodiment two：A kind of calculating hologram three-dimensional display device that can represent reproduction image hiding relation, in embodiment one
On the basis of, also coding is useful for the number of the lateral position of regulation and control tissue points on the corresponding elementary hologram of each tissue points
Grating.
Using the calculating hologram three-dimensional display methods that can represent reproduction image hiding relation of above system, including following step
Suddenly：
1) design units hologram step：Three-dimension object is resolved into a series of tissue points, the tissue points are three-dimensional
The minimum composition unit of object, using according to each tissue points intensity, the digital Fresnel lens of Position Design it is complete as primitive
Breath figure, adds in digital raster, by the period and the orientation that change digital raster on digital Fresnel lens by coding mode
To regulate and control the lateral position of tissue points；
2) information Step that is blocked is cut：The biography of each tissue points is determined according to the hiding relation between each tissue points
Direction is broadcast, by realizing hiding relation into line program cutting to elementary hologram.The mode of cutting is complete in the primitive
The corresponding hologram gray scale of the information that is blocked of each tissue points is set as a fixed value on breath figure, when shelter is opaque
When, then by the corresponding hologram gray scale zero setting of the information that is blocked of each tissue points on the elementary hologram；When blocking
When object is partially transparent, then by the corresponding hologram gray scale of the information that is blocked of each tissue points on the elementary hologram
A fixed value is set as, the size of the fixed value depends on the transmitance of shelter；
3) three-dimension object computed hologram synthesis step：The corresponding primitive of each tissue points for forming three-dimension object is holographic
Figure one complete three-dimension object computed hologram of synthesis, the hologram include all tissue points information of three-dimension object, can
The accurate hiding relation for representing reproduction image；
4) reconstruction of hologram step：Under the conditions of parallel light, the three-dimension object comprising the information that is blocked is calculated complete
Breath figure loading is in spatial light modulator.Constantly refresh loading computed hologram along with spatial light modulator, it can with timesharing
A series of three-dimensional reconstruction pictures with occlusion effect are obtained, are moved so as to fulfill the calculating holography that can represent reproduction image hiding relation
State Three-dimensional Display.
As shown in figure 3, the lateral position of tissue points is represented with (x, y), if hologram pixel total amount is M × N, therefore complete
When ceasing loading digital raster in figure, digital raster pixel total amount also should be M × N, and the Mathematical representation of digital raster is：
Wherein mod () represents complementation, and-M/2≤x≤M/2-1 ,-N/2≤y≤N/2-1, T are the week of digital raster
Phase can obtain the digital raster of different orientation when b with t value differences.It is synthesized by digital Fresnel lens and digital raster
Computed hologram can in three dimensions accuracy controlling tissue points position coordinates, realize the accurate positionin of tissue points.
As shown in figure 4, the digital Fresnel lens and digital raster after cutting combine, the computed hologram of synthesis can be same
When accuracy controlling tissue points position coordinates and the direction of propagation, so as in three dimensions Correct tissue points block
Relationship.
Based on the principle of body Three-dimensional Display voxel spot scan, can realize can represent that the calculating of reproduction image hiding relation is complete
Cease Three-dimensional Display.
Embodiment three：A kind of calculating hologram three-dimensional display device that can represent reproduction image hiding relation, in embodiment two
On the basis of, the light source is laser light source or LED light source, and the light for being incident on spatial light modulator is Convergent Laser Beam.Tool
Body can be used Convergent Laser Beam illumination or in parallel light wave illumination path one lens of postposition mode come build it is holographic again
Existing device；The physical parameters such as Pixel Dimensions, resolution ratio in view of current commercial space optical modulator are limited, this can cause to reproduce
The viewing visual angle of tissue points is relatively narrow, spatial light modulator modification scope is smaller, the cut coverage of tissue points viewing visual angle is smaller
The problems such as, using Convergent Laser Beam illumination or can be effective by the way of one lens of postposition in parallel light wave illumination path
Above-mentioned technical problem is solved, as shown in Fig. 5 to Fig. 8.Fig. 5 is parallel light and the condition of one lens of postposition in the optical path
Under, the digital Fresnel lens after cutting reproduces the schematic diagram of tissue points, and Fig. 6 is under Convergent Laser Beam lighting condition, after cutting
Digital Fresnel lens reproduce the schematic diagrames of tissue points, compared to parallel light wave illumination as shown in Figure 1 and be not added with lens
Situation, is illuminated using Convergent Laser Beam or one lens 3 of postposition can effectively increase body in parallel light wave illumination path
The cut coverage of vegetarian refreshments viewing visual angle is realized compared with the direction of propagation that tissue points are controlled in the range of wide viewing angle.Fig. 7 shines for directional light
Calculating that is bright and in the optical path under conditions of one lens of postposition, being synthesized by the digital Fresnel lens after cutting and digital raster
The schematic diagram of hologram reconstruction tissue points, Fig. 8 be under Convergent Laser Beam lighting condition, by the digital Fresnel lens after cutting and
The computed hologram of digital raster synthesis reproduces the schematic diagram of tissue points, compared to parallel light wave illumination as shown in Figure 4 and not
Add the situation of lens, illuminated using Convergent Laser Beam or one lens of postposition can exist simultaneously in parallel light wave illumination path
Pass is blocked in the position coordinates of accuracy controlling tissue points and the direction of propagation in wide range so as to Correct tissue points
System, realization can represent that the calculating hologram three-dimensional of reproduction image hiding relation is shown.As previously mentioned, by light source, spatial light modulator
Can have the directive property tissue points of the fixed direction of propagation, and the intensity of tissue points, position with the light path of lens composition with reproducing
Putting coordinate and the direction of propagation can be by accuracy controlling.Therefore, the hiding relation of tissue points can be by Correct.
Example IV：A kind of calculating hologram three-dimensional display device that can represent reproduction image hiding relation, in embodiment one
On the basis of, the spatial light modulator is the spatial light modulator array of splicing composition.Due to forming the voxel of three-dimension object
Point substantial amounts, and existing single spatial light modulator space-bandwidth product is limited, the utility model uses spatial light modulator
The method of splicing improves the space-bandwidth product of system, using multiple spatial light modulator spaces is spliced into spatial light modulator battle array
It arranges and shows the size of three-dimensional image to expand display range of observation or increase, so as to fulfill that can represent the meter of reproduction image hiding relation
Hologram three-dimensional is calculated to show.The flow of the display methods as shown in figure 9, based on principle of holography is calculated, with digital Fresnel lens (or
Elementary hologram) holographic reconstructed image represent all information of tissue points, by the use of spatial light modulator as digital Fresnel
The carrier of lens, the amplitude information and phase information of accuracy controlling tissue points, reproducing have the directive property of the fixed direction of propagation
Tissue points, so as to form the holographic reconstructed image with occlusion effect.Space light modulation is spliced by multiple spatial light modulators
Device array can improve space-bandwidth product, and three-dimensional image size is shown so as to expand display range of observation or increase.Along with space
Light modulator arrays constantly refresh loading computed hologram, can with timesharing obtain a series of three-dimensional reconstructions with occlusion effect
Picture, so as to fulfill that can represent the calculating holography three-dimension dynamical display of reproduction image hiding relation.
Embodiment five：A kind of calculating hologram three-dimensional display device that can represent reproduction image hiding relation, as shown in Figure 10,
In rectangular coordinate system in space xyz, by the seamless spliced mode of multiple spatial light modulators, illuminated using Convergent Laser Beam
The spliced spatial light modulator array 2 connected, by encoding multiple calculating synthesized by digital Fresnel lens and digital raster
Hologram is simultaneously loaded on spatial light modulator array, can simultaneously in wide range accuracy controlling tissue points position coordinates
And the direction of propagation, so as to the hiding relation of Correct tissue points, realizing can represent that the calculating of reproduction image hiding relation is holographic
Three-dimensional Display.Constantly refresh loading computed hologram along with spatial light modulator array, can realize can represent reproduction image
The calculating holography three-dimension dynamical display of hiding relation.
Embodiment six：A kind of calculating hologram three-dimensional display device that can represent reproduction image hiding relation, by light source, space
Optical modulator forms, and the light that the light source is sent out is incident to spatial light modulator, is carried for the entire hologram three-dimensional display device that calculates
For reproducing light, it is loaded in the spatial light modulator and holography is calculated by the three-dimension object that the elementary hologram of tissue points forms
To scheme, the corresponding hologram gray scale of the information that is blocked of tissue points is a fixed value in the three-dimension object computed hologram, wherein when
When shelter is opaque, then by the corresponding hologram gray scale of the information that is blocked of each tissue points on the elementary hologram
It is zero；When shelter is partially transparent, then the information that is blocked of each tissue points is corresponded on the elementary hologram
Hologram gray scale for a fixed value, the size of the fixed value depends on the transmitance of shelter, the spatial light modulator
For reflection-type or the spatial light modulator of transmission-type, the light source is laser light source or LED light source, is incident on sky
Between optical modulator light for Convergent Laser Beam, the spatial light modulator is to use seamless spelling by several spatial light modulators
The spatial light modulator array that the mode connect forms.
In the utility model, in a manner that spatial light modulator loads computed hologram reproduction tissue points, body is utilized
Vegetarian refreshments divides the principle of spacescan that can realize that the calculating hologram three-dimensional that can represent reproduction image hiding relation is shown, with reference to space
Light modulator arrays, which refresh loading computed hologram, can realize three-dimension dynamical display, have refresh rate it is fast, being capable of correct table
Show three-dimension object reproduction image hiding relation, can represent full parallax, the features such as no visual is tired.
The technical program unspecified part belongs to technology well known to those skilled in the art.
Claims (5)
1. a kind of calculating hologram three-dimensional display device that can represent reproduction image hiding relation, by light source, spatial light modulator group
Into, the light that the light source is sent out is incident to spatial light modulator, and reproduction light is provided for the entire hologram three-dimensional display device that calculates,
It is characterized in that：It is loaded in the spatial light modulator and holography is calculated by the three-dimension object that the elementary hologram of tissue points forms
Figure, wherein when shelter is opaque, the corresponding hologram of the information that is blocked of tissue points in the three-dimension object computed hologram
Gray scale is zero.
2. a kind of calculating hologram three-dimensional display device that can represent reproduction image hiding relation according to claim 1,
It is characterized in that：Also coding is useful for the number of the lateral position of regulation and control tissue points on the corresponding elementary hologram of each tissue points
Grating.
3. a kind of calculating hologram three-dimensional display device that can represent reproduction image hiding relation according to claim 1,
It is characterized in that：When shelter for it is partially transparent when, then on the elementary hologram each tissue points the information pair that is blocked
The hologram gray scale answered is a fixed value, and the size of the fixed value depends on the transmitance of shelter.
4. a kind of calculating hologram three-dimensional display device that can represent reproduction image hiding relation according to claim 1,
It is characterized in that：The light source is laser light source or LED light source, and the light for being incident on spatial light modulator is Convergent Laser Beam.
5. a kind of calculating hologram three-dimensional display dress that can represent reproduction image hiding relation according to one of claim 1-4
It puts, it is characterised in that：The spatial light modulator is the spatial light modulator battle array being spliced by several spatial light modulators
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976888A (en) * | 2017-12-18 | 2018-05-01 | 苏州大学 | It can represent the calculating hologram three-dimensional display methods and system of reproduction image hiding relation |
| CN109238167A (en) * | 2018-07-26 | 2019-01-18 | 深圳大学 | Transparent substance light corresponding relationship acquisition system |
| US10964107B2 (en) | 2018-07-26 | 2021-03-30 | Shenzhen University | System for acquiring correspondence between light rays of transparent object |
| CN115018806A (en) * | 2022-06-21 | 2022-09-06 | 北京理工大学 | Tomography method for overcoming internal light path shielding |
| JP7509510B2 (en) | 2021-07-01 | 2024-07-02 | Kddi株式会社 | Computer generated hologram generating device, method and program |
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| CN107976888A (en) * | 2017-12-18 | 2018-05-01 | 苏州大学 | It can represent the calculating hologram three-dimensional display methods and system of reproduction image hiding relation |
| CN109238167A (en) * | 2018-07-26 | 2019-01-18 | 深圳大学 | Transparent substance light corresponding relationship acquisition system |
| CN109238167B (en) * | 2018-07-26 | 2020-12-22 | 深圳大学 | Transparent object light corresponding relation acquisition system |
| US10964107B2 (en) | 2018-07-26 | 2021-03-30 | Shenzhen University | System for acquiring correspondence between light rays of transparent object |
| JP7509510B2 (en) | 2021-07-01 | 2024-07-02 | Kddi株式会社 | Computer generated hologram generating device, method and program |
| CN115018806A (en) * | 2022-06-21 | 2022-09-06 | 北京理工大学 | Tomography method for overcoming internal light path shielding |
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