CN103048867A - True three-dimensional display system of multi-mode hybrid projection - Google Patents
True three-dimensional display system of multi-mode hybrid projection Download PDFInfo
- Publication number
- CN103048867A CN103048867A CN2012105930385A CN201210593038A CN103048867A CN 103048867 A CN103048867 A CN 103048867A CN 2012105930385 A CN2012105930385 A CN 2012105930385A CN 201210593038 A CN201210593038 A CN 201210593038A CN 103048867 A CN103048867 A CN 103048867A
- Authority
- CN
- China
- Prior art keywords
- screen
- mode
- projection
- dimensional
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 39
- 238000003384 imaging method Methods 0.000 claims abstract description 23
- 230000011514 reflex Effects 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000004075 alteration Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 27
- 238000000034 method Methods 0.000 description 24
- 230000000694 effects Effects 0.000 description 18
- 230000000007 visual effect Effects 0.000 description 16
- 230000008901 benefit Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000004020 luminiscence type Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000008447 perception Effects 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000004438 eyesight Effects 0.000 description 3
- 230000002688 persistence Effects 0.000 description 3
- 230000035479 physiological effects, processes and functions Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000001093 holography Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000003447 ipsilateral effect Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000004304 visual acuity Effects 0.000 description 2
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- 239000005383 fluoride glass Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000013341 scale-up Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Images
Landscapes
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The invention discloses a true three-dimensional display system of multi-mode hybrid projection. The system comprises an imaging engine, an optical projection system, a mechanical and electronic module and a multi-mode mixed rotating screen, wherein the imaging engine is used for generating projection light of a slice image sequence; the optical projection system is used for receiving the projection light of the slice image sequence generated by the imaging engine, and projects the projection light on the multi-mode mixed rotating screen; the mechanical and electronic module is used for controlling the rotation movement of the multi-mode mixed rotating screen; and the multi-mode mixed rotating screen comprises a directional reflection screen and a spiral screen, wherein the directional reflection screen is used for generating light field three-dimensional images, and the spiral screen is used for generating true three-dimensional scanning images. Through the system, multiple three-dimensional display modes are organically combined into an integrated display system; through switching control technology, the excellent performances of various display modes can be protruded; and the shortcomings are conquered, so that the new true three-dimensional display system can be formed.
Description
Technical field
The invention belongs to the dimension display technologies field, be specifically related to a kind of true 3-D display (truethree-dimensional display) system, particularly a kind of real three-dimensional display system of multi-mode hybrid projection.
Background technology
The conventional planar display technique is only limited to two dimensional image, can not allow the observer obtain real three-dimensional depth information and complete character of surface.Two dimensional surface imaging and demonstration " force " us to observe with two-dimentional window to enrich lively three-dimensional world, not only lost important depth information (Depth Cue), three-dimensional relationship can't be accurately expressed, and the character of surface of the object on certain angle can only be embodied.This essential defect of conventional two-dimensional planar imaging and display technique has seriously hindered human perception to the objective world, has affected human accuracy, the degree of depth, speed and efficient to acquisition of information, processing, transmission, man-machine interaction and decision-making.
In the most real complete three-dimensional content information of Human Perception, the three-dimensional geometry dimensional properties (length and width and the degree of depth) that has not only comprised object, but also comprised the character of surface such as the chroma-luminance of body surface and scatter properties, and because the information such as blocking of causing of relative position relation and shade.True 3-D display (true three-dimensional display) technology attempts to construct novel display device, shows to greatest extent the true three-dimension information of three-dimensional body.So-called " true 3-D display " refers to that shown each three-dimensional picture point of image (claims again volume elements, voxel) has real character of surface, volume elements relative position relation also is embodied in the three-dimensional display apparatus truly, form three-dimension space image truly, have the character of surface of the actual physical degree of depth and photographic quality.The observer just can observe arbitrarily shown object, the most real complete three-dimensional content information of perception from 360 degree directions without any need for utility appliance.True dimension display technologies has fundamentally been upgraded the concept that information shows, make shown image life-like, provide complete psychology and physiological three-dimensional perception information to the beholder, for understand 3-D view and wherein the spatial relationship between the object unique means are provided.
Real three-dimensional display system is mainly drawn by the volume elements space at present and is realized.In at present numerous true 3-D display patterns, the volume elements space three-dimensional shows that (Volumetric 3D Display) and light field 3-D display (Optical Field 3D Display) receive many concerns, have obtained pretty good display effect.But yet this two large class 3-D display pattern all can't be seamlessly simultaneously the reproducing three-dimensional body have the actual physical depth information of occlusion effect, character of surface and three-dimensional measurement.Light field dimension display technologies based on many viewpoints can produce high-quality surface characteristic and the 3-D view with occlusion effect, make the observer experience high-quality three-dimensional scenic, but lack measurable true three-dimension spatial relationship, can not show that object reflects accurately three-dimensional dimension and mutually spatial relationship; And volume elements space three-dimensional display technique can accurately reflect dimension of object and spatial relationship, has wide visual angle, can form the impressive effect of visualization, but can not realize blocking, and lacks enough character of surface.
At present, the volume elements space three-dimensional show the 3-D display comprise based on luminescence medium, based on rotary screen or movable screen and cooperate the 3-D display two large classes of high speed display.The first kind is to utilize luminescence medium (comprising specific glass, gas, the fixed sturctures such as optical fiber of liquid and spatial arrangement) to cooperate scanning and the addressing of excitation beam, produces true 3-D display effect (referring to Fig. 1); Equations of The Second Kind mainly is by the screen of quick rotation or mobile various shapes, cooperates with the projection display or other high speed display at a high speed, and implementation space three-dimensional voxel addressing forms true 3-D display effect.
(1) but excite scanning based on the space of luminescence medium
Downing in 1996 adopts the mixed fluoride glass of praseodymium, erbium, thulium of the three pairs of high power infrared laser beams excitations to produce red, green, blue colour solid element with correspondence, has finally realized the color three dimension demonstration in centimetre-sized small cubes scope.The shortcoming that this class shows is, lack suitable driving source and the luminescence medium with abundant light conversion efficiency, voxel is activated by serial, the voxel sum is no more than 500,000, can't explain complicated image information or movable luminous point information, many physics and technical limitation make that the experimental provision indication range of having built up is little, resolution is low, be confined to simple letter or figure is static shows, can not realize at no distant date the true 3-D display of large scale, high resolving power, high brightness.
(2) based on rotary screen and spatial modulation photoscanning
German D.Bahr in 1996 etc. utilize three look laser instruments as optical system, scan an atwirl spiral screen, by modulator and scanner as the spatial light modulation means, control respectively intensity and the deflection angle of laser, in order to produce an instantaneous luminous point (referring to Fig. 2) at the spiral screen surfaces, along with the deflection of laser instrument and the rotation of spiral screen, just can in columned true three-dimension space, produce many luminous points, the observer will perceive because of persistence of vision a width of cloth 3-D view.
U.S. NEOS Technologies company cooperates with the commander of USN, control and marine surveillance center, sets up similar experimental provision, can produce the red, green, yellow image three-colo(u)r that 80,000 sizes are the 0.7mm voxel; The OmniView of Texas Instruments and USAF cooperative development
TMDisplay device also shields the combination 3-D display that adds Color Laser Projection Technology at spiral and attempts.The major defect that this class shows is that the voxel sum is no more than 500,000, can't explain complicated multidate information.
The Perspecta of U.S. Actuality Systems company research in 2002
TM3D System system utilizes high speed DLP projector, and the two-dimensional section sequence is projected on the atwirl diffuser screen, utilizes persistence of vision and is fused to the space three-dimensional image.As shown in Figure 3, Perspecta
TMTrue three-dimansioual display has adopted unconventional from axial projection's scheme in conjunction with the oblique light device, runs through the well focussed that projection screen scans scope in order to keep.High pressure mercury arc lamp impinges upon on the 3-SLM projector behind integrating rod and collector lens.Image on the SLMs is passed the center of a uncovered direct current generator, this driven by motor refrative mirror and screen rotation by projection.
At present, it is 10 inches spherical chart image space that this system provides diameter, the resolution of two-dimensional section is 768 * 768, the cross section adds up to 198, the voxel sum can reach 100,000,000 at most, and display refresh rates 30Hz can show 8 kinds of colors during highest resolution, but body display system 360 degree panoramas are looked greater than 180 degree pitching.This is a unique in the world commercial real three-dimensional display system, and the appearance of this system has further promoted the development of true dimension display technologies.But this equipment (can't be subjected to the display space increase restriction of DLP device speed in proportion between increase, 3-D view resolution and the color of image referring to Fig. 3 optical system a) complicated (referring to Fig. 3 b), voxel sum, can't improve again, and equipment price is expensive.The single projector mode that adopts, projector does not turn, rotating mirror, large oblique-angle projection.Consistent for the drop shadow effect that guarantees all directions, projector lens optical axis and dmd chip center superposition are also vertical, the revolving shaft of catoptron, the revolving shaft of screen and projector lens light shaft coaxle.For guaranteeing large pitching visual angle, adopt oblique-angle projection.But oblique-angle projection makes image produce up and down out of focus, sharpness decline, up big and down small generation trapezoidal distortion, upper dark lower bright homogeneity are bad, though usable image is correcting distorted, and loss resolution, the processing such as that image need carry out is trapezoidal, rotation and gray scale finishing increase operand.Reduce bore and can reduce out of focus to the impact of sharpness, but contradict with improving brightness, need to adopt the method for optics to carry out the correction of brightness of image unevenness, certain difficulty is arranged.
(3) rotate based on luminophor
The true dimension display technologies of early development adopts light-emitting diode dense is installed on the rotatable flat board, control the luminous sequential of each light emitting diode and it is synchronous with dull and stereotyped position of rotation, can produce 3-D view at a rotating body, (US 3 by the Schipper proposition in 1963 at first for this method, 097,261).In 1979, Berlin develops a new method, the a large amount of problems that show data of steering swivel transmission have been solved with the light guiding method, and (US 4 to have replaced the light emitting diode of original usefulness with high speed LED (Light EmitterDiode) array, 160,973), this display packing adopts the led array flat board to rotate three-dimensional display space.The major defect of this technology is that the sharpness of 3-D view is subject to the restriction of led array density and the impact of LED switching time.Simultaneously, because the method is subject to the structure of dull and stereotyped rotary screen, the space distribution of three-dimensional volume elements is inhomogeneous, thereby affects image quality.
Utilize cathode ray ball (Cathode Ray Sphere, be called for short CRS) to show that the concept of 3-D view carried in nineteen sixty by Ketchpel at first, 1979, New Zealand scholar Blundell was doing the principle realization with this concept.This method is plated in fluorescent material on the rotatable screen, and this rotatable screen is placed in the vacuum tank, scans the rotatable screen that is in the vacuum with cathode beam again, produces visible point of light.If with the scanning sequence of cathode beam and the rotary synchronous of screen, just can in the rotary area of screen, demonstrate true 3-D view.Three-dimensional image quality by this display packing generation is relatively poor, is subject to the light refraction of glass container wall, and the impact of Rotation screen transparency.In addition, the factor that affects picture element is luminous start-up time and the sunset glow of fluorescence radiation material.
(4) light field 3-D display
Light field 3-D display (Light Field 3D Display) technology attempts to record 360 degree scope light fields with reconstruction of objects, as holography shows, therefore the spatial character that it not only can the true reappearance three-dimensional scene, and can correctly show and mutually block relation between the scenery.The observer can observe different pictures from different perspectives, and watching does not for a long time have bad physiological reaction.In order to reduce quantity of information, can compress the information of a certain dimension during reconstruction of optical wave field, light field change information such as vertical direction, also can reduce according to the human eye characteristic angle fine degree of optical field distribution, thereby quantity of information is compared with holographic technique to be greatly reduced, thereby can realize the dynamic space 3-D display of 360 degree, satisfy the needs of practical application.
The principle of many viewpoints light field 3-D display of generating three-dimensional image is more directly perceived, will gather from certain visual angle the three-dimensional anaglyph backwards projection of (or computing machine generate) real-world object to identical visual angle.If many view system can generate the view of sufficient amount with correct parallax near display device, the observer just can experience the 3-D effect of shown object.Fig. 4 has shown that traditional many viewpoints 3-D display is from collecting the process of 3-D display.Usually the visual field is limited about 100 degree of the place ahead.
Utilize Rotation screen, visual field expansion hula 360 degree of many viewpoints light field 3-D display can be arrived field angle, as shown in Figure 5.The figure on the left side of Fig. 5 has described to generate 360 degree around the mechanism of the multi-view image of field angle, and the figure on the right has been described and utilized the projection mechanism with directivity to be created in the direction picture at each visual angle in the 360 degree scopes.The projection imaging engine of a high speed is with the rotary screen at many viewpoints light field image projection to 45 degree inclination angle.The image sequence of projection and the rotation angle of screen are synchronous.For a specific visual angle, the image that is projected is exactly the correspondence image that collects from this visual angle.Rotation screen adopts the plane, uses the orienting reflex material with directivity to consist of.This special anisotropic reflecting material can guarantee enough field angle so that the light that reflects has larger scattering angle in the vertical direction, and horizontal direction only has very narrow visual angle (about 1 degree).This unique optical characteristics to we provide one perfectly mechanism demonstrate to the observer in the certain observation angle and high-qualityly have superficial makings and block the coloured image of characteristic, the observer who is in other angles then sees different images.
The image with correct parallax of this specific field angle of correspondence that therefore, can see from the observer of different field angle.Observer consequently can both experience three-dimensional parallax effect.
Compare with the body 3 D displaying method of drawing a volume elements at corresponding three-dimensional position, many viewpoints light field 3 D displaying method produce from different visual angles with respect to several light field images.This method does not provide the true three-dimensional position of volume elements, but can generate the grain surface characteristic of the photo of shown object, and can generate the occlusion effect between the three-dimensional body of demonstration.
(5) dynamic holographic 3-D display
According to physical low coverage effect viewpoint, why human eye can see external object, and its immediate cause is not the outwardness because of object, but because the light wave that object sends has arrived the retina of human eye, optic cell receives the thing light wave, thereby produces the vision of three dimensions picture.Usually hologram can be interpreted as a jumbo memory device, store or " freezed " full detail of three-dimensional body.
Information for extract light wave from hologram, also necessary with suitable light-wave irradiation hologram, " thaw " or recover original thing light wave, human eye is when reproducing the thing light wave and observe, just as remove to observe original real-world object by this window of hologram.Holography is one two step imaging process, i.e. the record of object light wave (storage or coding) and reproduce the process of (recovering or decoding), and common last process is utilized the interference of light realization, and a rear process utilizes diffraction of light to finish.Holographic displaying principle as shown in Figure 6.
Fig. 6 be multi-mode hybrid projection real three-dimensional display system shield the schematic diagram of multilevel swept-volume 3-D display pattern based on fast two-dimensional projector and fast moving.As shown in Figure 6, suppose that a scan screen is with cycle period faster move around at Z axis (such as greater than 24Hz).Within each time cycle of scanning motion, by the high speed projector N width of cloth two dimensional image pattern is carried out projection towards plane of motion, movable screen and two dimensional image are projected on the diverse location of Z axis and intersect, and form the two dimensional image stack at true three dimensions.If the cycle period of movable screen is enough high, two-dimensional projection's instrument can produce the two dimensional image section of sufficient amount in every time motion, because the visual persistence effect of human eye, the observer just can experience a true 3-D view and be suspended in the three dimensions, not shake.
In real three-dimensional display system, high speed imaging engine and optical projection system are used for generating superfast image model and projection (per second several thousand width of cloth) mix rotary screen to a multi-mode spiral screen.Projected image pattern and helical surface are upper at various height to intersect (the different rotary angle that depends on helicoid), then each rotation of helicoid can be in this three-dimensional display space the generating three-dimensional pixel.Each part of helical surface can use math equation to describe:
Wherein x, y, z are the three-dimensional coordinate of display space, and H is the height (on the z direction) of spiral screen, and γ is the angular displacement of screen screen, and p is scale-up factor.
If the rotation of spiral screen can with the sequential synchronised of projection engine, the three-dimensional image projection pattern just can draw out at three dimensions with very high refresh rate like this.It is a true three-dimension stereo-picture that bore hole can be experienced him.Do not need to put on special device and just can watch so very three-dimensional three-dimensional suspending image, just as genuine object is placed on the there.Rotating screw swept-volume dimension display technologies has been proved to be to generate the very effective mode of high resolving power body 3-D view.
Hologram three-dimensional shows can provide a kind of visual effect identical during with the observation original, but the angle of diffraction size of dynamic hologram spatial light modulator has limited observable field range, the large scene hologram three-dimensional shows that its quantity of information is big, to the height of the requirement of processing speed, memory capacity and the transmission bandwidth of spatial light modulator, computing machine, all be that present soft and hardware technology can't realize.The calculation holographic that forms is learned but holographic technique combines with computing technique, is that true 3-D display has been opened up a new approach, and this also is one of true 3-D display source of constantly bringing forth new ideas in mechanism.
In exploitation single display pattern technology, we recognize that each single display pattern has its unique advantages and disadvantages, does not still have a kind of display mode can reach out of this world performance.Therefore, be necessary conscientiously to examine and the quality of more various display modes, the novel true 3-D display mechanism that research organically blends based on plurality of display modes, system and device are realized.Exploitation can realize the true dimension display technologies of occlusion effect and character of surface, is a significant challenge in 3-D display field, is deep into the visual and interactive application of the three-dimensional data of various reality for true dimension display technologies and has great importance.
The multi-mode real three-dimensional display system that integrates plurality of display modes can overcome defective and the deficiency of single display pattern, and more abundant psychology and physiology three-dimensional information is provided, and reaches the inaccessiable synthesis display performance of any single display pattern.The basic point of departure of technical solution of the present invention that Here it is.
Summary of the invention
The technical matters that (one) will solve
Technical matters to be solved by this invention is that existing real three-dimensional display system can not satisfy many-sided requirement on performance, the defective that combination property is not good.
(2) technical scheme
Ask that for solving above-mentioned technology the present invention proposes a kind of real three-dimensional display system of multi-mode hybrid projection, comprise imaging engine, optical projection system, machinery and electronic module, multi-mode mixing rotary screen,
Described imaging engine is for generation of the projected light of sectioning image sequence;
Described optical projection system is used for the projected light of the sectioning image sequence of reception cause imaging engine generation, and it is projected on the multi-mode mixing screen;
Described machinery and electronic module are used for controlling described multi-mode and mix rotatablely moving of Rotation screen;
Described multi-mode is mixed rotary screen and is comprised an orienting reflex screen and a spiral screen, and this orienting reflex screen is used for generating the light field 3-D view, and this spiral screen is used for generating true said three-dimensional body scan image.
(3) beneficial effect
The present invention organically is fused to multiple 3-D display pattern in the integrated display system, utilizes the switching controls technology, highlights the excellent properties of various display modes, remedies deficiency separately, thereby forms a kind of brand-new real three-dimensional display system.
Description of drawings
Fig. 1 is the true 3-D display principle schematic based on luminescence medium of prior art;
Fig. 2 be prior art add the true 3-D display principle schematic of laser scanning based on spiral screen;
Fig. 3 is based on the true 3-D display principle schematic that the Plane of rotation screen adds Projection Display;
Fig. 4 is traditional many viewpoints three-dimensional acquisition and displaying principle figure;
Fig. 5 is 360 traditional degree many viewpoints collection and displaying principles;
Fig. 6 be multi-mode hybrid projection real three-dimensional display system shield the schematic diagram of multilevel swept-volume 3-D display pattern based on fast two-dimensional projector and fast moving;
Fig. 7 is the composition synoptic diagram of multi-mode hybrid projection real three-dimensional display system of the present invention;
Fig. 8 is the synoptic diagram that multi-mode of the present invention is mixed screen;
Fig. 9 is the fundamental diagram of multi-mode hybrid projection real three-dimensional display system of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in further detail.
The present invention is based on novel screen design and process software, each three-dimensional body can be in each screen rotation bout drawn twice: once use the swept-volume method to draw true 3-D view at three dimensions, once be to generate high-quality character of surface (illumination, shade or other) with many viewpoints 3 D displaying method in addition, and the occlusion effect between the different three-dimensional bodies of three dimensions.These two kinds of display modes are integrated in the system inherently, and the observer not only can obtain the space sense of true three-dimensional, and can see the texture features of body surface.
The projection engine that generates body three many viewpoints of peacekeeping light field 3-D display images can share same optical projection engine, and on each angle position of screen, the image of projection is divided into two halves, by the dividing line corresponding to the screen rotation angle.Half image projection is to helical surface adult in next life scanning three-dimensional image.Half image of projection then is the light field 3-D view in addition, corresponding to the object texture image at corresponding visual angle.
Multi-mode display screen design of the present invention is comprised of two parts, and first is body 3-D display screen, and second portion is light field 3-D display screen.Two parts screen produces a kind of corresponding display mode separately, therefore can show respectively single-mode and combination producing mixed mode.If need to only generate body 3-D display image, then can be only to body three-dimensional screen part projection slices, to light field three-dimensional portion projected image not, the display effect that obtains like this is the body 3-D display.Similarly, if need to only generate light field 3-D display image, then can be only to light field three-dimensional screen part projection slices, to body three-dimensional portion projected image not, the display effect that obtains like this is the light field 3-D display.
If need to produce the multi-mode 3-D display, then can be to two parts of hybrid screen projection respective image all, then two kinds of 3-D views show simultaneously.
Fig. 7 is the composition synoptic diagram of multi-mode hybrid projection real three-dimensional display system of the present invention.As shown in the figure, system of the present invention mainly is comprised of following five parts: (1) imaging engine; (2) optical projection system; (3) machinery and electronic module; (4) multi-mode is mixed rotary screen; (5) transparent protective shield.
Imaging engine is for generation of the projected light of sectioning image sequence.As previously mentioned, true 3-D display image is made of several sectioning images.In order to ensure that the 3-D display image has enough frame per second, the speed that imaging engine produces the sectioning image projected light is necessary enough high, such as being higher than the thousands of width of cloth of per second, such as per second 3000 width of cloth.
Optical projection system is connected in described imaging engine, is used for the projected light of the sectioning image sequence of reception cause imaging engine generation, and it is projected on the multi-mode mixing screen.
Optical projection system can make it have required optical characteristics to projected light, to satisfy the needs of true 3-D display.
Machinery and electronic module are used for controlling described multi-mode and mix rotatablely moving of Rotation screen.
Transparent protective shield is selectable unit (SU), and it is arranged at the periphery that described multi-mode is mixed Rotation screen, mixes rotary screen for the protection of described multi-mode.
It is a key component of system of the present invention that multi-mode is mixed rotary screen.Fig. 8 has shown the basic structure that this multi-mode is mixed rotary screen.As shown in Figure 8, multi-mode is mixed rotary screen and is comprised an orienting reflex screen and a spiral screen, and the orienting reflex screen is used for generating the light field 3-D view, and the spiral screen is used for generating true said three-dimensional body scan image.Both organically combine, thereby realize the seamless integrated of many viewpoints light field 3-D display pattern and the true 3-D display pattern of swept-volume.
Thus, multi-mode of the present invention is mixed the rotary screen real three-dimensional display system and not only can be worked independently under many viewpoints 3-D display pattern and the true 3-D display pattern of swept-volume, and can realize showing simultaneously the hybrid projection display mode of two kinds of pattern 3-D views.
A specific embodiment of multi-mode hybrid projection real three-dimensional display system of the present invention is described below.
As shown in Figure 9, multi-mode hybrid projection real three-dimensional display system of the present invention is based on spatial light modulator (Spatial Light Modulator, SLM) and multi-mode mixing rotary screen.As shown in Figure 9, system of the present invention comprises light source 1, collimation lens (Collimating lens) 3, polarity optical splitter (polarized beam splitter) 4, spatial light modulator 5, main control system 6, projection optical device 7 and mixes rotary screen 8.
Described light source 1 is for generation of RGB three coloured light lines, and in this embodiment, light source 1 can be monochromatic light light source (such as laser, LED etc.), also can be polychromatic source (such as various white light sources or wide spectrum light source).The light that light source 1 produces incides collimation lens 3.
Collimation lens 3 is used for and will projects described polarity optical splitter 4 behind the RGB three coloured light line adjustment collimation.
Described polarity optical splitter 4 is used for the light of reflection polarity to spatial light modulator (SLM) 5.
Spatial light modulator 5 is used for producing according to the light of described polarity the projected light of the required image slices of 3-D display.The highest interconversion rate of at present more advanced spatial light modulator can reach per second 32,000 frames.Among this embodiment, adopt TI DLP D4100 series.The light beam that reflects on the spatial light modulator 5 projects the multi-mode rotation via polarity optical splitter 4 and projection optical device 7 to be mixed on the screen 8.
Main control system 6 is used for image information and the sequential of control spatial light modulator 5, to produce the image stream of high speed conversion, and then modulation spatial light modulator 5, when the pixel on the spatial light modulator 5 was unlocked (On), the light by this pixel just was reflected back toward the polarity optical splitter.When the pixel on the spatial light modulator 5 was closed (Off), the light by this pixel was just absorbed by spatial light modulator 5.By the opening and closing of pixel on the spatial light modulator 5, can control the light by its reflection, thereby modulate the image of high speed conversion.
Described projection optical device 7 is used for and will carries out the optical characteristics adjustment through the image slices that spatial light modulator 5 generates, and eliminates aberration, mixes on the screen 8 thereby project rotation.
As previously mentioned, described rotation mixes screen 8 and draws together orienting reflex screen and spiral screen, and the orienting reflex screen is used for generating the light field 3-D view, and the spiral screen is used for generating true said three-dimensional body scan image.Project the light beam that rotates on the orienting reflex screen that mixes screen 8 and can form many viewpoints 3-D view, and the light beam that projects on the helicoid that rotates the mixing screen is intercepted and captured by helicoid, forms visible point of light in intercepting and capturing place, forms very three-dimensional volume elements and distributes.If spiral screen rotational speed is fast (greater than 24Hz) enough, just human eye can be felt as it true 3-D view and many viewpoints 3-D view of continuous demonstration.The true 3-D view that produces like this " floats " in three dimensions, and the beholder can observe the not ipsilateral of image from different perspectives, need not to wear special spectacles, just as observing genuine three-dimensional body.
Following table has shown that the characteristic between volume elements space three-dimensional display system, many viewpoints light field three-dimensional display system and the true three dimension system of multi-mode hybrid projection compares.
The true dimension display technologies of multi-mode mixing screen of the present invention is compared with the true dimension display technologies of monotype swept-volume and many viewpoints of monotype light field dimension display technologies, and system of the present invention has following beneficial effect:
1) the present invention is under the prerequisite of size, weight and the cost that need not increase significantly hardware complexity, total system, naturally many viewpoints light field 3-D display and swept-volume 3-D display are merged in a system, form the multi-mode display mode, show that high-quality has the true 3-D view of texture and occlusion effect, and make on the three-dimensional body of demonstration with real three-dimensional relationship.
2) various display mode of the present invention can arbitrarily switch according to user's needs, can be that monotype shows (body three-dimensional or light field are three-dimensional), it also can be the multi-mode mixed display, use flexibly, true three-dimensional information is fully showed with various possible modes and pattern, made the observer obtain comprehensively three-dimensional experience.
3) the multi-mode real three-dimensional display system is not limited to the fusion of body three-dimensional and light field three-dimensional, also is applicable to organically blending of other multiple 3-D display pattern.Its concept, method and realization technology have certain generality, the multi-mode real three-dimensional display system that integrates plurality of display modes can overcome the defective of single display pattern, more abundant psychology and physiology three-dimensional information is provided, reaches the inaccessiable synthesis display performance of any single display pattern.
4) the present invention can realize that authentic color three dimension shows.Adopt the RGB three-color light source, throw respectively Red Green Blue (or other can produce the color scheme of color true to nature), the display after synthesizing just can produce the true 3-D display of authentic colour.
5) optical system of the present invention has the advantage of " parallel projection system ", utilize SLM can produce the advantage of the two-dimensional data projection stream of high speed conversion, can once produce simultaneously the individual volume elements of a large amount of three-dimensional volume elements (up to 1024 * 768 or 1920 * 1080), " serial optical projection system " unlike take laser scanning system as representative once can only produce a volume elements.This " parallel projection system " design philosophy has overcome the bottleneck of the true 3-D display of restriction generation high definition.
6) along with the rapid raising of spatial light modulator technology, image resolution ratio is more and more high, slewing rate is fast (refresh rate of the up-to-date DLP product of TI D4100 series can reach per second 32,552 frames) more and more, and the real three-dimensional display system that surpasses 500,000,000 volume elements is practical.
7) design of multi-mode display screen can further be optimized, and at aspects such as shape, material, optical characteristics very large choice is arranged.Such as in order to pursue structural symmetry and transient equilibrium, can also be designed to the plane to body 3-D display screen.Again such as screen material being elected as initiatively electronics toggle screen (such as PDLC), as required conversion body three-dimensional or light field three dimensional pattern.
8) image of true 3-D display can be become the virtual image with the special optical device, make true 3-D view just as true three-dimensional body " floating " in three dimensions.This " can probe into " display mode makes the beholder need not to wear the not ipsilateral that special spectacles just can be observed 3-D view from different perspectives, not only when obtaining three-dimensional relationship, obtain high-quality texture and the 3-D view with occlusion effect, and for man-machine interaction provides novel approach, thereby comparatively complete physiology and the sensed condition of psychology are provided for the human visual system.
9) it is worth mentioning that the very three-dimensional volume elements formula display technique based on DMD and rotation mixing screen that we propose has unique advantage in the space distribution of three-dimensional volume elements: the basic evenly distribution of three dimensions volume elements.This advantage has avoided other technology (such as the rotating LED flat board etc.) owing to cause three-dimensional volume elements essential defect pockety on the system imaging mechanism.Simultaneously, three-dimensional imaging engine and rotary display screen need not direct electrical connection, have greatly simplified the difficulty of three-dimensional data transmission.Thereby has a clear superiority of Simple fast at the aspects such as in proportion extendability of the evaluating characteristics of the high-speed transfer of the Real-time Collection of the data representation pattern of three-dimensional display space, three-dimensional volume elements treatment technology, color three dimension data and Data Generation Technology, 3-D display data and display technique, three-dimensional volume elements and layout specification, 3-D view display space and display resolution.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; be understood that; the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the real three-dimensional display system of a multi-mode hybrid projection is characterized in that, comprises imaging engine, optical projection system, machinery and electronic module, multi-mode mixing rotary screen,
Described imaging engine is for generation of the projected light of sectioning image sequence;
Described optical projection system is used for the projected light of the sectioning image sequence of reception cause imaging engine generation, and it is projected on the multi-mode mixing screen;
Described machinery and electronic module are used for controlling described multi-mode and mix rotatablely moving of Rotation screen;
Described multi-mode is mixed rotary screen and is comprised an orienting reflex screen and a spiral screen, and this orienting reflex screen is used for generating the light field 3-D view, and this spiral screen is used for generating true said three-dimensional body scan image.
2. the real three-dimensional display system of multi-mode hybrid projection as claimed in claim 1 is characterized in that, described imaging engine comprises light source, collimation lens, polarity optical splitter and spatial light modulator, wherein,
Described light source is for generation of light;
Described collimation lens is used for described light collimation and projects described polarity optical splitter;
Described polarity optical splitter is used for reflecting the light of described polarity to described spatial light modulator;
Described spatial light modulator is used for producing according to the light of described polarity the projected light of described image slices.
3. the real three-dimensional display system of multi-mode hybrid projection as claimed in claim 2, it is characterized in that, described optical projection system comprises projection optical device, described projection optical device is used for and will adjusts and eliminate aberration through the image slices that spatial light modulator generates, and then projects described multi-mode rotation and mixes on the screen.
4. such as the real three-dimensional display system of each described multi-mode hybrid projection in the claim 3, it is characterized in that described multi-mode display screen is comprised of two parts, first is body 3-D display screen, and second portion is light field 3-D display screen.
5. the real three-dimensional display system of multi-mode hybrid projection as claimed in claim 4 is characterized in that, described light source is the RGB three-color light source.
6. the real three-dimensional display system of multi-mode hybrid projection as claimed in claim 4 is characterized in that, screen material is elected initiatively electronics toggle screen as.
7. the real three-dimensional display system of multi-mode hybrid projection as claimed in claim 4 is characterized in that, the highest interconversion rate of described spatial light modulator is not less than per second 32,000 frames.
8. the real three-dimensional display system of multi-mode hybrid projection as claimed in claim 4, it is characterized in that, also comprise main control system 6, it is used for image information and the sequential of control spatial light modulator 5, and then modulation spatial light modulator 5, when the pixel on the described spatial light modulator 5 was unlocked, the light by this pixel just was reflected back toward described polarity optical splitter.
9. the real three-dimensional display system of multi-mode hybrid projection as claimed in claim 4 is characterized in that, the speed of the image projection light that described imaging engine produces is higher than per second 3000 width of cloth.
10. such as the real three-dimensional display system of each described multi-mode hybrid projection among the claim 1-9, it is characterized in that, also comprise transparent protective shield, it is arranged at the periphery that described multi-mode is mixed Rotation screen, mixes rotary screen for the protection of described multi-mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105930385A CN103048867A (en) | 2012-12-31 | 2012-12-31 | True three-dimensional display system of multi-mode hybrid projection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105930385A CN103048867A (en) | 2012-12-31 | 2012-12-31 | True three-dimensional display system of multi-mode hybrid projection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103048867A true CN103048867A (en) | 2013-04-17 |
Family
ID=48061560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105930385A Pending CN103048867A (en) | 2012-12-31 | 2012-12-31 | True three-dimensional display system of multi-mode hybrid projection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103048867A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116559A (en) * | 2015-09-29 | 2015-12-02 | 南安市腾龙专利应用服务有限公司 | Naked eye 3D (Three Dimensional) display device and operating principle thereof |
| CN105204277A (en) * | 2015-10-20 | 2015-12-30 | 苏州龙诺法智能科技有限公司 | Real-time projection imaging equipment and system in free space |
| CN105388624A (en) * | 2015-12-22 | 2016-03-09 | 黄祖辉 | Stereo display |
| CN105867096A (en) * | 2016-04-28 | 2016-08-17 | 青岛奇异果智能科技有限公司 | High-speed rotary optical medium based three-dimensional holographic laser projection system |
| CN106534853A (en) * | 2016-12-21 | 2017-03-22 | 中国科学技术大学 | Light-field image compression method based on hybrid scanning sequence |
| CN107577059A (en) * | 2017-09-30 | 2018-01-12 | 深圳市华星光电半导体显示技术有限公司 | A kind of displacement-type scans 3 d display device |
| CN111338096A (en) * | 2020-03-26 | 2020-06-26 | 吉林大学 | Exciting light three-dimensional focusing scanning system and image scanning method thereof |
| CN112699510A (en) * | 2021-01-13 | 2021-04-23 | 东风柳州汽车有限公司 | Simulation manufacturing method, device, equipment and storage medium for automobile door glass |
| CN112951100A (en) * | 2019-12-10 | 2021-06-11 | 周彦辰 | Rotary display device |
| CN114815287A (en) * | 2017-08-23 | 2022-07-29 | 交互数字麦迪逊专利控股公司 | Light field image engine method and apparatus for generating a projected 3D light field |
| CN115032810A (en) * | 2022-06-22 | 2022-09-09 | 阿依瓦（北京）技术有限公司 | High-performance three-dimensional (3D) display device and method |
| TWI807286B (en) * | 2014-01-10 | 2023-07-01 | 美商傲思丹度科技公司 | Methods for full parallax compressed light field 3d imaging systems |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6064423A (en) * | 1998-02-12 | 2000-05-16 | Geng; Zheng Jason | Method and apparatus for high resolution three dimensional display |
| CN1971340A (en) * | 2005-11-21 | 2007-05-30 | 耿征 | Real 3D high definition display method and device |
| CN101783966A (en) * | 2009-01-21 | 2010-07-21 | 中国科学院自动化研究所 | Real three-dimensional display system and display method |
| CN101800906A (en) * | 2009-02-11 | 2010-08-11 | 中国科学院自动化研究所 | True three-dimensional imaging display screen |
| CN103885280A (en) * | 2012-12-21 | 2014-06-25 | 耿征 | True three-dimensional display system based on mixed screen and method |
-
2012
- 2012-12-31 CN CN2012105930385A patent/CN103048867A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6064423A (en) * | 1998-02-12 | 2000-05-16 | Geng; Zheng Jason | Method and apparatus for high resolution three dimensional display |
| CN1971340A (en) * | 2005-11-21 | 2007-05-30 | 耿征 | Real 3D high definition display method and device |
| CN101783966A (en) * | 2009-01-21 | 2010-07-21 | 中国科学院自动化研究所 | Real three-dimensional display system and display method |
| CN101800906A (en) * | 2009-02-11 | 2010-08-11 | 中国科学院自动化研究所 | True three-dimensional imaging display screen |
| CN103885280A (en) * | 2012-12-21 | 2014-06-25 | 耿征 | True three-dimensional display system based on mixed screen and method |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI807286B (en) * | 2014-01-10 | 2023-07-01 | 美商傲思丹度科技公司 | Methods for full parallax compressed light field 3d imaging systems |
| CN105116559A (en) * | 2015-09-29 | 2015-12-02 | 南安市腾龙专利应用服务有限公司 | Naked eye 3D (Three Dimensional) display device and operating principle thereof |
| CN105204277A (en) * | 2015-10-20 | 2015-12-30 | 苏州龙诺法智能科技有限公司 | Real-time projection imaging equipment and system in free space |
| CN105388624A (en) * | 2015-12-22 | 2016-03-09 | 黄祖辉 | Stereo display |
| CN105867096B (en) * | 2016-04-28 | 2018-07-24 | 青岛奇异果智能科技有限公司 | 3D hologram laser projection system based on high speed rotation optical medium |
| CN105867096A (en) * | 2016-04-28 | 2016-08-17 | 青岛奇异果智能科技有限公司 | High-speed rotary optical medium based three-dimensional holographic laser projection system |
| CN106534853B (en) * | 2016-12-21 | 2019-10-25 | 中国科学技术大学 | Light field image compression method based on mixed sweep sequence |
| CN106534853A (en) * | 2016-12-21 | 2017-03-22 | 中国科学技术大学 | Light-field image compression method based on hybrid scanning sequence |
| CN114815287A (en) * | 2017-08-23 | 2022-07-29 | 交互数字麦迪逊专利控股公司 | Light field image engine method and apparatus for generating a projected 3D light field |
| WO2019061592A1 (en) * | 2017-09-30 | 2019-04-04 | 深圳市华星光电半导体显示技术有限公司 | Displacement type scanning three-dimensional display device |
| CN107577059A (en) * | 2017-09-30 | 2018-01-12 | 深圳市华星光电半导体显示技术有限公司 | A kind of displacement-type scans 3 d display device |
| CN112951100A (en) * | 2019-12-10 | 2021-06-11 | 周彦辰 | Rotary display device |
| CN111338096A (en) * | 2020-03-26 | 2020-06-26 | 吉林大学 | Exciting light three-dimensional focusing scanning system and image scanning method thereof |
| CN111338096B (en) * | 2020-03-26 | 2021-06-08 | 吉林大学 | Exciting light three-dimensional focusing scanning system and image scanning method thereof |
| CN112699510A (en) * | 2021-01-13 | 2021-04-23 | 东风柳州汽车有限公司 | Simulation manufacturing method, device, equipment and storage medium for automobile door glass |
| CN115032810A (en) * | 2022-06-22 | 2022-09-09 | 阿依瓦（北京）技术有限公司 | High-performance three-dimensional (3D) display device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103048867A (en) | True three-dimensional display system of multi-mode hybrid projection | |
| CN103885280B (en) | Real three-dimensional display system based on mixing screen and method | |
| CN102754013B (en) | Three-dimensional imaging method, imaging system, and imaging device | |
| CN102279514B (en) | Pitching multi-view angle suspension type panoramic space three-dimensional display device based on combined screen | |
| CN101038421B (en) | Volumetric 3D display system based on multiple projectors rotating screen | |
| Balogh et al. | Holovizio 3D display system | |
| CN102520787B (en) | Real-time spatial three-dimensional presentation system and real-time spatial three-dimensional presentation method | |
| CN103051906B (en) | Integral imaging naked eye three-dimensional autostereoscopic LED (light emitting diode) display system and display screen thereof | |
| CN102164296B (en) | System and method for full-angular parallax stereoscopic imaging based on single DLP (digital light processing) projection | |
| Geng | A volumetric 3D display based on a DLP projection engine | |
| CN105700162B (en) | 360 ° of three-dimensional display apparatus of full parallax and method based on light field scanning | |
| CN1910936A (en) | A three-dimensional display | |
| CN101783966A (en) | Real three-dimensional display system and display method | |
| CN103777453B (en) | True three-dimensional image display systems and display packing | |
| Balogh et al. | A Scalable Hardware and Software System for the Holographic Display of Interactive Graphics Applications. | |
| CN103207513A (en) | True three-dimensional displayer | |
| CN101339309B (en) | Convertible display screen and its three-dimensional display device | |
| CN107290864A (en) | It is a kind of based on the body three-dimensional display apparatus and method that circumferentially shield scanning | |
| US9961333B1 (en) | System and method for light field projection | |
| CN202975583U (en) | True three-dimension image display system | |
| CN103048868B (en) | Based on true color 360 ° of view field three-dimensional display devices and the method for composite screen | |
| Yoshida | fVisiOn: interactive glasses-free tabletop 3D images floated by conical screen and modular projector arrays | |
| CN103064244B (en) | Based on true color 360 ° of three-dimensional display apparatus and the method for high-speed projector | |
| RU2718777C2 (en) | Volumetric display | |
| Asahina et al. | Realistic 3D swept-volume display with hidden-surface removal using physical materials |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130417 |