CN104270628A - Naked eye suspended stereo display system based on Fresnel lenses and using method thereof - Google Patents
Naked eye suspended stereo display system based on Fresnel lenses and using method thereof Download PDFInfo
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- CN104270628A CN104270628A CN201410538946.3A CN201410538946A CN104270628A CN 104270628 A CN104270628 A CN 104270628A CN 201410538946 A CN201410538946 A CN 201410538946A CN 104270628 A CN104270628 A CN 104270628A
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Abstract
The invention provides a naked eye suspended stereo display system based on Fresnel lenses and a using method thereof. The naked eye suspended stereo display system comprises a directional screen, a projection unit and a motor. The directional screen is composed of a Fresnel lens set and an optical grating. The Fresnel lens set comprises two Fresnel lenses which are sheets formed by polyolefin materials in an injection molding mode. One surface of each lens is a shiny face, and the other surface of the corresponding lens is carved with concentric circles from small to large. The projection unit comprises a plurality of minitype projectors, and the projection unit is arranged below the directional screen. Camera lenses of the projectors face the directional screen, the minitype projectors are arrayed around a rotating shaft and rightly face the directional screen to conduct projection, and the motor is arranged below the projection unit. The naked eye suspended stereo display system based on the Fresnel lenses can allow multiple persons to watch through naked eyes at any angle, observed stereo images are different when the persons stay at different positions, when the images are displayed on the screen, observers can touch the images with hands, and therefore good man-machine interactivity can be reflected.
Description
Technical field
The present invention relates to a kind of bore hole suspension three-dimensional display system and using method, particularly relate to a kind of bore hole suspension three-dimensional display system based on Fresnel Lenses and using method, belong to bore hole field of stereoscopic display.
Background technology
The perceptive mode of people to objective world has multiple, and eyes carry the information obtaining ability of the mankind more than 90%, by the obtainable amount of information of vision considerably beyond obtainable amount of information of other modes such as the sense of hearing, sense of touch, sense of smell and the sense of taste.Object in reality is all three-dimensional, three-dimensional, and the vision system of human eye can be good at adapting to the three-dimensional world in reality, accurately image information is passed to people.But due to the reason of technology, current most display unit can only show the image of two dimension, although also the colourful of the boundless universe can be shown to people, far can not provide the visual information compared with real world, can not allow the world of people's perception solid.Along with the development of science and technology and the raising of people's living standard, people have not only been confined to simply transmit two dimensional surface information for the requirement of display unit, but wish that it can provide more true, be rich in third dimension, closer to the three-dimensional image information of the actual impression of human eye, three-dimensional stereo display technique is arisen at the historic moment thus.
Image display is one of mankind's important means accepting external information.Three-dimensional display then can the three-dimensional information of reconstructed object, provides the information that object is more comprehensive, full and accurate, has a wide range of applications in fields such as medical science, military affairs, advertising art and stereoscopic TVs.Current three-dimensional display cannot realize bore hole, the viewing of the wide ken simultaneously, and the suspension of stereo-picture and tangible.Along with the development of stereo display technique, the viewing effect of people to three-dimensional display is had higher requirement, and require that it realizes bore hole 360 ° of panorama viewings, image suspends and has good man-machine interaction.
Although this technical development a very long time, existing three-dimensional display mostly cannot to realize bore hole viewing, panorama and image simultaneously and to suspend tangibly feature.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, one is the object of the present invention is to provide to realize bore hole 3D, the three-dimensional display system can watched in arbitrarily angled bore hole for many people.
In order to achieve the above object, this invention takes following technical scheme:
Compared to prior art, bore hole suspension three-dimensional display system based on Fresnel Lenses provided by the invention and using method, multiple minitype projection machine is adopted to provide disparity map, directed screen is by driven by motor High Rotation Speed, multi-projector arranges around rotating shaft, when orientation screen is just to one of them projector, by projector's emergent pupil imaging, square one-tenth observation band over the display, motor rotates a circle, the observation band formed surrounds whole circle, realize panorama, when human eye is positioned at any two different observation bands, timesharing is received corresponding disparity map, form stereoscopic vision, and be positioned at different positions, the different side of stereo-picture will be observed.
Another kind provided by the invention is based on the bore hole suspension three-dimensional display system of Fresnel Lenses, comprise directed screen, projection unit and motor, directed screen is by Fresnel Lenses group and optical grating constitution, described Fresnel Lenses group comprises two panels Fresnel Lenses, mostly described Fresnel Lenses is the thin slice being noted pressure by polyolefine material, lens surface one side is light face, the ascending concentric circles of another side imprinting, described projection unit comprises multiple minitype projection machine, described projection unit is arranged on directed screen below, the camera lens of described projector shields towards orientation, multiple minitype projection machine is around rotating shaft arrangement and just to the projection of orientation screen, described motor is arranged on the below of projection unit.
Use a using method for the above-mentioned bore hole suspension three-dimensional display system based on Fresnel Lenses, comprise the following steps:
Step one, employing multi-projector arrange around rotating shaft and just project to orientation screen, and when orientation screen is just to projector, projector projects image onto orientation and shields, and image goes out screen and between human eye and orientation shield, now forms negative parallax;
Step 2, directed screen are by driven by motor High Rotation Speed, and multi-projector arranges around rotating shaft, when orientation screen is just to one of them projector, by projector's emergent pupil imaging, and square one-tenth observation band over the display;
Step 3, motor rotate a circle, and the observation band of formation surrounds whole circle, realizes panorama, when human eye is positioned at any two different observation bands, timesharing is received corresponding disparity map, form stereoscopic vision, and be positioned at different positions, will the different side of stereo-picture be observed.
Bore hole suspension three-dimensional display system based on Fresnel Lenses provided by the invention and using method, can watch in arbitrarily angled bore hole for many people, position is different, the stereo-picture observed is also different, and image goes out screen, observer can touch image with hand, embodies good human-computer interaction.
Accompanying drawing explanation
Fig. 1 is binocular parallax schematic diagram;
Fig. 2 is various parallax type schematic diagrames;
Fig. 3 is based on round trip flight Nie Er lens imaging schematic diagram
Fig. 4 is grating directional scattering principle schematic;
Fig. 5 is directed screen image-forming principle schematic diagram
Fig. 6 is directed screen rotation tomography schematic diagram;
Fig. 7 is the present embodiment novel bore hole suspension three-dimensional display system principle schematic.
Embodiment
The invention provides a kind of bore hole suspension three-dimensional display system based on Fresnel Lenses and using method, for making object of the present invention, technical scheme and effect clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment
The disclosed bore hole suspension three-dimensional display system based on Fresnel Lenses of the present embodiment and using method, a series of research shows, the eyes of the mankind mainly come from following several mode for the depth preception of real world, respectively: simple eye mobile parallax, the parallax of two, mediating effect+6, convergence effect.Wherein the parallax of two sees that object produces the topmost reason of third dimension and depth perception.Because this three-dimensional display is based on binocular parallax principle, so highlight binocular parallax principle below:
One, the principle of stereoscopic vision
Have the distance of about 65 millimeter between two of the mankind, right eye and left eye go to see between same object to be have slight difference respectively, are the equal of with the different angle Qu Kan world.And the location of eyes to space is such process: as shown in Figure 1, when eyes see have nuance two width images or scene reflection give brain time, brain is treated as the very complete image of a pair the two width image synthesises received, and creates object and the position of this object in real scene of accurate stereoscopic-state.Observer is made to have sensation that the is three-dimensional and degree of depth also just to define like this.
Any be taken in solid space identical a bit, different by the direction of the image point position deviation being projected in stereo image pair, be divided into vertical parallax and horizontal parallax.Wherein, vertical parallax refers to the skew of in the vertical direction image point position, and horizontal parallax refers to the skew of image point position in the horizontal direction.But feel discomfort extremely, because eyes are horizontal distribution instead of vertical distribution time vertical parallax can allow eyes observe object.Realize in the process of stereo display so horizontal parallax is usually used in, and as far as possible vertical parallax will avoid in stereo display occurring.Parallax is also sub-category, below just introduce the classification of parallax further.
As shown in Figure 2, horizontal parallax has zero time difference respectively, positive parallax, negative parallax, disperses inspection Four types.
1. parallax free
Time line a bit formed in eyes in the imaging point of target object and solid space meets at same point on a display screen, binocular parallax is zero, namely said parallax free above.When viewing this point, can feel that this point is just on screen, that is because the sight line of right and left eyes is intersected in the same point on display screen just.
2. positive parallax
Two lines a bit formed in eyes in the imaging point of target object and solid space and display screen intersect, and the interval between two intersection points is less than the setting of mankind's interpupillary distance, the parallax this moment produced i.e. positive parallax, when presenting positive parallax, when the sight of observer projects on this aspect, after producing the fusion of brain, can feel that this point is deeper than display screen, have a kind of depth perception.
3. negative parallax
Two lines a bit formed in eyes in imaging point and solid space intersect before display screen, and the parallax this moment produced is called negative parallax.When presenting negative parallax, observer can feel that impact point is between display screen and eyes.
4. disperse parallax
Two lines a bit formed in eyes in imaging point and solid space and display screen intersect (not intersecting before display screen), and the interval between two intersection points is greater than the setting of mankind's interpupillary distance, and the parallax this moment produced is called disperses parallax.But when be in disperse parallax, will visual fatigue be felt when the sight of observer projects this point, because exceeded range of fusion and cannot be fused together at these 2.Among actual life, this situation can't be produced, so when making three-dimensional display, also will avoid producing this situation as far as possible.
In order to make stereo-picture suspend tangible, so image must go out screen and between screen and human eye, according to the feature of above four kinds of parallax types, this three-dimensional display select negative parallax.
Two, based on the bore hole suspension stereo display principle of Fresnel Lenses
The image-forming principle of directed screen
This bore hole suspension three-dimensional display is imaged on the viewing area of specifying to make the picture of projector's emergent pupil, and use directed screen as imaging device, directed screen is made up of two panels Fresnel Lenses and a sheet gration.Mostly Fresnel Lenses is the thin slice being noted pressure by polyolefine material, and lens surface one side is light face, the ascending concentric circles of another side imprinting, and Fresnel Lenses to be many times equivalent to the convex lens of infrared ray and visible ray, and effect is better.In this orientation screen, Fresnel Lenses plays focussing force, and as Fig. 3, the effect of Fresnel Lenses group is that the projector's emergent pupil being positioned over Fresnel Lenses 1 focal plane place is imaged on Fresnel Lenses 2 focal plane place.Grating is as the one of directional diffuser screen, and it by the light of incidence to a direction scattering, thus can increase viewing scope, and as shown in Figure 4, horizontal grating in the vertical direction has scattering to its principle, and angle of scattering is β.Therefore after Fresnel Lenses group, add the range of observation that horizon light grid expand vertical direction, form vertical observation band.Fresnel Lenses group and grating constitute directed screen, and when projector is arranged in the focus of directed screen Fresnel Lenses 1, directed screen, to projector's emergent pupil imaging, the focal plane of Fresnel Lenses 2 forms a vertical observation band, as shown in Figure 5.
In order to realize 360 ° of panorama viewings, display adopts multi-projector around rotating shaft arrangement and just projects to orientation screen, only have when directed screen is just to projector, projector just can project image onto on directed screen, in order to make image, there is tangible property, improve the man-machine interaction of three-dimensional display, image must go out screen and human eye and directed shield between, also namely parallax type is now negative parallax above-mentioned, for Liang Ge projector, as shown in Figure 6, as seen from the figure, when orientation screen (solid line) is just to projector 1, form observation band 1; When orientation screen (dotted line) is just to projector 2, forms observation band 2, when left eye is positioned at observation band 1 and right eye is positioned at observation band 2, the stereopsis of screen can be obtained out.
Display principles display adopts multiple minitype projection machine to provide disparity map, from above analysis of shielding orientation, directed screen is separated disparity map and by projector's emergent pupil imaging, form the observation band above display, when beholder's right and left eyes is positioned at different observation band, to corresponding disparity map be received, form stereoscopic vision, as shown in Figure 7.Directed screen is by driven by motor High Rotation Speed, and multi-projector arranges around rotating shaft, when orientation screen is just to one of them projector, by projector's emergent pupil imaging, and square one-tenth observation band over the display.Therefore, motor rotates a circle, and the observation band of formation surrounds whole circle, realize panorama, when human eye is positioned at any two different observation bands, timesharing is received corresponding disparity map, form stereoscopic vision, and be positioned at different positions, will the different side of stereo-picture be observed.
This display increase effectively viewing scope, realizes panorama, can make many people multi angle view stereo-picture simultaneously, and have motion parallax.In display, directed screen adopts slant setting structure, stereopsis can be made to be imaged on outside screen and unobstructed, and therefore image has the sense that suspends, and beholder is tangible to image, better embodies the interactive feature of beholder and image.
Bore hole suspension three-dimensional display system based on Fresnel Lenses provided by the invention and using method, can watch in arbitrarily angled bore hole for many people, position is different, the stereo-picture observed is also different, and image goes out screen, observer can touch image with hand, embodies good human-computer interaction.
Be understandable that, for those of ordinary skills, can be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, and all these change or replace the protection range that all should belong to the claim appended by the present invention.
Claims (2)
1. the bore hole suspension three-dimensional display system based on Fresnel Lenses, comprise directed screen, projection unit and motor, it is characterized in that: described orientation screen is by Fresnel Lenses group and optical grating constitution, described Fresnel Lenses group comprises two panels Fresnel Lenses, mostly described Fresnel Lenses is the thin slice being noted pressure by polyolefine material, lens surface one side is light face, the ascending concentric circles of another side imprinting, described projection unit comprises multiple minitype projection machine, described projection unit is arranged on directed screen below, the camera lens of described projector shields towards orientation, multiple minitype projection machine is around rotating shaft arrangement and just to the projection of orientation screen, described motor is arranged on the below of projection unit.
2. use as claimed in claim 1 based on a using method for the bore hole suspension three-dimensional display system of Fresnel Lenses, it is characterized in that comprising the following steps:
Step one, employing multi-projector arrange around rotating shaft and just project to orientation screen, and when orientation screen is just to projector, projector projects image onto orientation and shields, and image goes out screen and between human eye and orientation shield, now forms negative parallax;
Step 2, directed screen are by driven by motor High Rotation Speed, and multi-projector arranges around rotating shaft, when orientation screen is just to one of them projector, by projector's emergent pupil imaging, and square one-tenth observation band over the display;
Step 3, motor rotate a circle, and the observation band of formation surrounds whole circle, realizes panorama, when human eye is positioned at any two different observation bands, timesharing is received corresponding disparity map, form stereoscopic vision, and be positioned at different positions, will the different side of stereo-picture be observed.
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| CN201410538946.3A CN104270628A (en) | 2014-09-27 | 2014-09-27 | Naked eye suspended stereo display system based on Fresnel lenses and using method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111158162A (en) * | 2020-01-06 | 2020-05-15 | 亿信科技发展有限公司 | Super multi-viewpoint three-dimensional display device and system |
| CN112399169A (en) * | 2020-10-29 | 2021-02-23 | 重庆工贸职业技术学院 | Projection array type naked-eye 3D display system |
-
2014
- 2014-09-27 CN CN201410538946.3A patent/CN104270628A/en active Pending
Non-Patent Citations (2)
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| 李剑;朱秋东;陈飔;等: "新型裸眼悬浮立体显示系统", 《光学技术》 * |
| 陈飔;朱秋东;李剑;等: "周视悬浮立体显示系统的光学系统设计", 《光学技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111158162A (en) * | 2020-01-06 | 2020-05-15 | 亿信科技发展有限公司 | Super multi-viewpoint three-dimensional display device and system |
| WO2021139204A1 (en) * | 2020-01-06 | 2021-07-15 | 亿信科技发展有限公司 | Three-dimensional display device and system |
| CN111158162B (en) * | 2020-01-06 | 2022-08-30 | 亿信科技发展有限公司 | Super multi-viewpoint three-dimensional display device and system |
| CN112399169A (en) * | 2020-10-29 | 2021-02-23 | 重庆工贸职业技术学院 | Projection array type naked-eye 3D display system |
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