CN102183873A - Suspended three-dimensional 360-degree field space display device based on high-speed projector - Google Patents
Suspended three-dimensional 360-degree field space display device based on high-speed projector Download PDFInfo
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- CN102183873A CN102183873A CN201110106479.3A CN201110106479A CN102183873A CN 102183873 A CN102183873 A CN 102183873A CN 201110106479 A CN201110106479 A CN 201110106479A CN 102183873 A CN102183873 A CN 102183873A
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Abstract
The invention discloses a suspended three-dimensional 360-degree field space display device based on a high-speed projector. The device comprises a bending diffusing screen, the high-speed projector, an image generator, a detection module, a motor and a transmission mechanism; the high-speed projector is used for projecting combined images of 360-degree full field view of a three-dimensional object on the bending diffusing screen rotating at a high speed; and the bending diffusing screen can be used for controlling a vertical bending angle and a horizontal diffusing angel of an emergent light, so that an observer can observe images of different visual angles, and the displayed three-dimensional object is suspended above the bending diffusing screen. The suspended three-dimensional 360-degree field space display device based on a high-speed projector can enable naked eyes of multiple people in a 360-degree field to observe, realize space blocking and blanking, and can peek in interactive touch.
Description
Technical field
The present invention relates to display device, relate in particular to a kind of floated 360 ° of visual field space three-dimensional display devices based on high-speed projector.
Background technology
The mankind are born spatial thought persons, how to realize that it is the target that people seek assiduously that real space three-dimensional shows always.The difficulty of 3-D display maximum is that obtaining of three-dimensional mass data handled and transmission and reproduction, especially reproducing technology at present.Main dimension display technologies has at present: parallax type 3-D display, hologram three-dimensional demonstration and space three-dimensional demonstration etc.
At present the parallax type 3-D display is the stereo display technique of popularizing the most, and it makes left and right view be respectively observer's images of left and right eyes by the particular separation mode and observes, and utilizes binocular vision to melt picture and produces three-dimensional perception.Though this 3-D display can be brought the sense of a kind of deep space virtual three-dimensional to the observer, but it only provides the discrete vision area and the viewpoint of limited number, and the stereo display meeting of non-natural depth perception causes reactions such as having a headache, feel sick appears in the observer when watching for a long time.It is a kind of real space three-dimensional display technique that hologram three-dimensional shows.Reproduce whole amplitudes and the phase information that has kept original thing light wave as light wave during hologram three-dimensional shows, reproducing picture has identical three-dimensional character with the original.But hologram three-dimensional display message amount is big, to spatial light modulator, the height of the requirement of memory capacity, all be soft at present, hardware technology can't realize.The true 3-D display of body space is a kind ofly can carry out the technology that image information is reproduced in a true three-dimension space that really have width, height and a degree of depth, and it can make numerous observers watch the space three-dimensional scene from each side simultaneously in the mode of watching of its custom.It is generation, absorption or the scattering that utilizes visible radiation and form voxel, realizes in the space 3-D display can not only satisfying nearly all physiology and psychological depth cueing automatically, can many people, multi-angle, simultaneously, bore hole observes.But because therefore luminous isotropy can't be reproduced the various aerial prospectives of objective three-dimensional scenic and block characteristic.The full-view visual field space three-dimensional shows it is that a kind of space three-dimensional that forms the image that reproduces the object corresponding orientation on all directions of the total space shows.This 3-D display has provided correct space and has blocked relation, the correct objective three-dimensional scenic of reproduction space, the visual angle with higher density at interval, visual angle quantity is many, but this display mode also needs the data storage and the transmission of magnanimity, and the viewing area of image is smaller.Above-mentioned space three-dimensional demonstration all needs to rely on various screens or the show media technology realizes, needs the hologram image source as holography, and body 3-D display and panorama 3-D display need Rotation screen or scanning screen or luminescence medium.For these display systems, the observer can only be trapped among the periphery of display and watch, and can not realize the mutual of the formula that can probe into.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the floated 360 ° of visual field space three-dimensional display devices based on high-speed projector are provided.
A kind of floated 360 ° of visual field space three-dimensional display devices based on high-speed projector comprise transmission-type deviation type diffuser screen, high-speed projector, pictcure generator, detecting module, motor and gear train.Wherein, transmission-type deviation type diffuser screen is made of transmission-type sawtooth pattern grating and cylindrical grating, and both grating orientations are parallel to each other; High-speed projector is positioned at the below of transmission-type deviation type diffuser screen and toward the top projection, projected image drops on the transmission-type deviation type diffuser screen; Gear train links to each other with transmission-type deviation type diffuser screen, by the rotation of motor, drives deviation type diffuser screen and rotates; Detecting module links to each other in turn with pictcure generator, high-speed projector; Transmission-type deviation type diffuser screen is rolled over the projection ray of high-speed projector toward a lateral deviation, and in deviation direction generation scattering, and the direction low-angle transmission vertical with the deviation direction.Another kind of floated 360 ° of visual field space three-dimensional display devices based on high-speed projector comprise reflective deviation type diffuser screen, high-speed projector, pictcure generator, detecting module, motor and gear train.Wherein, reflective deviation type diffuser screen is made of reflective sawtooth pattern grating and cylindrical grating, and both grating orientations are parallel to each other; High-speed projector is positioned at the top of reflective deviation type diffuser screen and toward the below projection, projected image drops on the reflective deviation type diffuser screen; Gear train links to each other with reflective deviation type diffuser screen, and by the rotation of motor, reflective deviation type diffuser screen rotates; Detecting module links to each other in turn with pictcure generator, high-speed projector; Toward a lateral reflection deviation, and in deviation direction generation scattering, and the direction low-angle vertical with the deviation direction reflects reflective deviation type diffuser screen the projection ray of high-speed projector.Described pictcure generator comprises field programmable gate array, IO port and storer; Field programmable gate array links to each other with IO port and storer respectively, and the IO port connects detecting module, and field programmable gate array links to each other with high-speed projector.Described pictcure generator is a computing machine.Described detection module is photoelectric sensor or mechanical location switch.
The present invention proposes a kind of floated 360 ° of visual field space three-dimensional display devices based on high-speed projector, by high-speed projector and deviation type diffuser screen are combined, show media and display space are separated, construct and be suspended in airborne 3-D display, realization can probe into and touch mutual suspension space three-dimensional demonstration, and it is true, fine and smooth to reproduce three-dimensional scenic.
Description of drawings
Fig. 1 is a kind of floated 360 ° of visual field space three-dimensional display device synoptic diagram based on high-speed projector;
Fig. 2 is the structural representation of transmission-type deviation type diffuser screen of the present invention;
Fig. 3 is another kind of floated 360 ° of visual field space three-dimensional display device synoptic diagram based on high-speed projector;
Fig. 4 is the structural representation of reflective deviation type diffuser screen of the present invention;
Fig. 5 is the composition structured flowchart of pictcure generator of the present invention;
Among the figure: transmission-type deviation type diffuser screen 1, high-speed projector 2, pictcure generator 3, detecting module 4, motor 5, gear train 6, reflective deviation type diffuser screen 7, transmission-type sawtooth pattern grating 11, cylindrical grating 12, field programmable gate array 31, storer 32, IO port 33, reflective sawtooth pattern grating 71, cylindrical grating 72.
Embodiment
The space three-dimensional that can realize full-view visual field based on floated 360 ° of visual field space three-dimensional display devices of high-speed projector shows.The full-view visual field 3-D display be 360 ° of directions of level demonstrate a week discrete with the corresponding view field image sequence of viewpoint position on every side.View field image limits its lighting angle through directional scattering screen, guarantee that each width of cloth image can only be near its viewpoint position among a small circle in as seen.The eyes of observer around being positioned at just can be seen and the corresponding different view field image in its eyes position, produce stereoscopic sensation.Floated 360 ° of visual field space three-dimensional display devices of the present invention are suspended in the three-dimensional scenic that shows to the restriction of light the objective physical space of screen top by deviation type diffuser screen.This method not only has perspective blanking, many people bore hole simultaneously around the characteristics of watching, and can also realize allowing on every side the observer probe into and touch the mutual three-dimensional body that reproduces, and meets the objective way of people's perception real-world object more.
As shown in Figure 1, a kind of floated 360 ° of visual field space three-dimensional display devices based on high-speed projector comprise transmission-type deviation type diffuser screen 1, high-speed projector 2, pictcure generator 3, detecting module 4, motor 5 and gear train 6.High-speed projector 2 is positioned at the below of transmission-type deviation type diffuser screen 1, and with the past top projection of the projection image sequence of handling well in advance, projected image drops on the transmission-type deviation type diffuser screen 1.Transmission-type deviation type diffuser screen 1 is rolled over the projection ray of high-speed projector 2 toward a lateral deviation, and in deviation direction generation scattering, and the direction low-angle transmission vertical with the deviation direction.Gear train 6 links to each other with transmission-type deviation type diffuser screen 1, by the rotation of motor 5, drives transmission-type deviation type diffuser screen 1 high-speed rotation.Gear train 6 is general to adopt gear drives, turbine and worm transmission, band transmission etc., mainly is that the rotation with motor 5 passes to transmission-type deviation type diffuser screen 1, drives the rotation of transmission-type deviation type diffuser screen 1.The rotating speed of transmission-type deviation type diffuser screen 1 is determined jointly by the rotating speed of motor 5 and the ratio of gear of gear train 6.Detecting module 4 links to each other in turn with pictcure generator 3, high-speed projector 2.Detecting module 4 detects the velocity of rotation and the position thereof of transmission-type deviation type diffuser screen 1, and its rotating speed and position signalling passed to pictcure generator 3, by the initial position of pictcure generator 3 control high-speed projectors 2 projection image sequence and the frame frequency of high-speed projector, with this projection image sequence that guarantees high-speed projector 2 and transmission-type deviation type diffuser screen 1 rotate synchronous.When transmission-type deviation type diffuser screen 1 fixedly the time, be positioned at a certain fixed view position of viewing area, its image of watching only in the high-speed projector projected image over against a fillet image of this position.After 1 rotation of transmission-type deviation type diffuser screen, the combination image of continuous multiple image diverse location fillet in the projection image sequence is then watched in a certain fixed view position that is arranged in viewing area.Suppose that transmission-type deviation type diffuser screen 1 rotates a circle, high-speed projector 2 projections go out
Width of cloth image, so when transmission-type deviation type diffuser screen 1 rotation, revolution move certain angle (
) the switching piece image.In order to satisfy the persistence of vision of human eye, need to improve the refreshing frequency of image, this just requires to improve the rotating speed of transmission-type deviation type diffuser screen 1.If the rotating speed of transmission-type deviation type diffuser screen 1 is
, the frame frequency of high-speed projector 2 then
For
, the refreshing frequency of three-dimensional scenic also is
When the visual angle was enough close at interval, people's eyes laid respectively at two different visual angles, then see different images, thereby produced stereoscopic vision, and the three-dimensional scenic that reproduces is suspended in the top of transmission-type deviation type diffuser screen 1.Projected image quantity weekly generally needs more than 200 width of cloth, promptly
If system refresh frequency
Be 15r/s, then the frame frequency of projector
At least 3000 frames are so need the projector of high frame frequency.Chang Yong high-speed projector 1 is the DMD projector of one chip or three-chip type the most.
As shown in Figure 2, transmission-type deviation type diffuser screen 1 is made of transmission-type sawtooth pattern grating 11 and cylindrical grating 12, and both grating orientations are parallel to each other.Transmission-type deviation type diffuser screen 1 is rolled over the projection ray of high-speed projector 2 toward a lateral deviation, and in deviation direction generation scattering, and the direction low-angle transmission vertical with the deviation direction.Transmission-type sawtooth pattern grating 11 is rolled over the projection chief ray of the high-speed projector 2 of transmission toward a lateral deviation, the sawtooth angle of wedge of sawtooth pattern grating 11 has determined the deviation angle to projection ray, and the sawtooth direction of sawtooth pattern grating 11 has determined the deviation direction to the projection chief ray; Cylindrical grating 12 is limiting projection image thereon respectively on the grating orientation and on perpendicular to grating orientation to its shooting angle, on grating orientation,, on perpendicular to grating orientation, carry out scattering with bigger angle with smaller dispersion angle outgoing.With the low-angle outgoing, its angular dimension is generally less than transmission-type deviation type diffuser screen 1 on the horizontal direction vertical with the deviation direction
And transmission-type deviation type diffuser screen 1 takes place with large angle scattering in the deviation direction, but the horizontal direction of the marginal ray of its scattering upper end is identical with the horizontal component direction of deviation direction, otherwise also can see image partly in the other side of deviation direction.
As shown in Figure 3, another kind of floated 360 ° of visual field space three-dimensional display devices based on high-speed projector comprise high-speed projector 2, pictcure generator 3, detecting module 4, motor 5, gear train 6 and reflective deviation type diffuser screen 7.High-speed projector 2 is positioned at the top of reflective deviation type diffuser screen 7, and with the past below projection of the projection image sequence of handling well in advance, projected image drops on the reflective deviation type diffuser screen 7.Reflective deviation type diffuser screen 7 the projection ray of high-speed projector 2 after toward a lateral reflection deviation, and in deviation direction generation scattering, and the direction low-angle vertical with the deviation direction reflects.Gear train 6 links to each other with reflective deviation type diffuser screen 7, by the rotation of motor 5, drives reflective deviation type diffuser screen 7 high-speed rotation.Gear train 6 mainly is that the rotation with motor 5 passes to reflective deviation type diffuser screen 7, drives the rotation of reflective deviation type diffuser screen 7.Detecting module 4 links to each other in turn with pictcure generator 3, high-speed projector 2.The velocity of rotation and the position thereof of detecting module 4 detection of reflected formula deviation type diffuser screens 7, and its rotating speed and position signalling passed to pictcure generator 3, by the initial position of pictcure generator 3 control high-speed projectors 2 projection image sequence and the frame frequency of high-speed projector, with this projection image sequence that guarantees high-speed projector 2 and reflective deviation type diffuser screen 7 rotate synchronous.When reflective deviation type diffuser screen 7 fixedly the time, be positioned at a certain fixed view position of viewing area, its image of watching only in the high-speed projector projected image over against a fillet image of this position.After reflective deviation type diffuser screen 7 rotations, the combination image of continuous multiple image diverse location fillet in the projection image sequence is then watched in a certain fixed view position that is arranged in viewing area.Suppose that reflective deviation type diffuser screen 7 rotates a circle, high-speed projector 2 projections go out
Width of cloth image, so when 7 rotations of reflective deviation type diffuser screen, revolution move certain angle (
) the switching piece image.If the rotating speed of reflective deviation type diffuser screen 7 is
, the frame frequency of high-speed projector 2 then
For
, the refreshing frequency of three-dimensional scenic also is
When the visual angle was enough close at interval, people's eyes laid respectively at two different visual angles, then see different images, thereby produced stereoscopic vision, and the three-dimensional scenic that reproduces is suspended in the top of reflective deviation type diffuser screen 7.Chang Yong high-speed projector 1 is the DMD projector of one chip or three-chip type the most.
As shown in Figure 4, reflective deviation type diffuser screen 7 is made of reflective sawtooth pattern grating 71 and cylindrical grating 72, and both grating orientations are parallel to each other.Toward a lateral reflection deviation, and in deviation direction generation scattering, and the direction low-angle vertical with the deviation direction reflects reflective deviation type diffuser screen 7 the projection ray of high-speed projector 2.Reflective sawtooth pattern grating 71 is with the past lateral reflection deviation of the projection chief ray of the high-speed projector 2 of transmission, the sawtooth angle of wedge of reflective sawtooth pattern grating 71 has determined the deviation angle to projection ray, and the sawtooth direction of reflective sawtooth pattern grating 71 has determined the deviation direction to the projection chief ray; Cylindrical grating 72 is limiting the image of projection on it respectively on the grating orientation and on perpendicular to grating orientation to its shooting angle, with smaller dispersion angle outgoing, carry out scattering with bigger angle on perpendicular to grating orientation on grating orientation.With the low-angle outgoing, its angular dimension is generally less than reflective deviation type diffuser screen 7 on the horizontal direction vertical with the deviation direction
And reflective deviation type diffuser screen 7 takes place with large angle scattering in the deviation direction, but the horizontal direction of the marginal ray of its scattering upper end is identical with the horizontal component direction of deviation direction, otherwise also can see image partly in the other side of deviation direction.
As shown in Figure 5, described pictcure generator 3 comprises field programmable gate array 31, IO port 33 and storer 32; Field programmable gate array 31 links to each other with IO port 33 and storer 32 respectively, IO port 33) connect detecting module 4, field programmable gate array 31 links to each other with high-speed projector 2.In system's procedure for displaying, field programmable gate array 31 will be stored in projection image sequence in the storer 32 in advance and read and import high-speed projector 2 into for demonstration.And in the actual displayed process, the projection image sequence of high-speed projector 2 needs to rotate maintenance synchronously with deviation type diffuser screen.Detection module 4 is photoelectric sensor or mechanical location switch, is used for detecting the rotating speed and the position thereof of deviation type diffuser screen, and its rotating speed and position signalling is passed to the IO port 33 of pictcure generator 3.Field programmable gate array 31 detects rotating speed and the position signalling that imports on the IO port 33, and the treated again frame frequency of the projected image of high-speed projector 2 and reference position controls keeps synchronous.Described pictcure generator 3 also can be computing machine.
Claims (5)
1. floated 360 ° of visual field space three-dimensional display devices based on high-speed projector, its characteristic is that it comprises transmission-type deviation type diffuser screen (1), high-speed projector (2), pictcure generator (3), detecting module (4), motor (5) and gear train (6); Wherein, transmission-type deviation type diffuser screen (1) is made of transmission-type sawtooth pattern grating (11) and cylindrical grating (12), and both grating orientations are parallel to each other; High-speed projector (2) is positioned at the below of transmission-type deviation type diffuser screen (1) and toward the top projection, projected image drops on the transmission-type deviation type diffuser screen (1); Gear train (6) links to each other with transmission-type deviation type diffuser screen (1), by the rotation of motor (5), drives deviation type diffuser screen (1) and rotates; Detecting module (4) links to each other in turn with pictcure generator (3), high-speed projector (2); Transmission-type deviation type diffuser screen (1) is rolled over the projection ray of high-speed projector (2) toward a lateral deviation, and in deviation direction generation scattering, and the direction low-angle transmission vertical with the deviation direction.
2. floated 360 ° of visual field space three-dimensional display devices based on high-speed projector, its characteristic is that it comprises high-speed projector (2), pictcure generator (3), detecting module (4), motor (5), gear train (6) and reflective deviation type diffuser screen (7); Wherein, reflective deviation type diffuser screen (7) is made of reflective sawtooth pattern grating (71) and cylindrical grating (72), and both grating orientations are parallel to each other; High-speed projector (2) is positioned at the top of reflective deviation type diffuser screen (7) and toward the below projection, projected image drops on the reflective deviation type diffuser screen (7); Gear train (6) links to each other with reflective deviation type diffuser screen (7), by the rotation of motor (5), drives reflective deviation type diffuser screen (7) and rotates; Detecting module (4) links to each other in turn with pictcure generator (3), high-speed projector (2); Toward a lateral reflection deviation, and in deviation direction generation scattering, and the direction low-angle vertical with the deviation direction reflects reflective deviation type diffuser screen (7) the projection ray of high-speed projector (2).
3. a kind of floated 360 ° of visual field space three-dimensional display devices according to claim 1 and 2 based on high-speed projector, its characteristic is that described pictcure generator (3) comprises field programmable gate array (31), IO port (33) and storer (32); Field programmable gate array (31) links to each other with IO port (33) and storer (32) respectively, and IO port (33) connects detecting module (4), and field programmable gate array (31) links to each other with high-speed projector (2).
4. a kind of floated 360 ° of visual field space three-dimensional display devices based on high-speed projector according to claim 1 and 2, its characteristic is that described pictcure generator (3) is a computing machine.
5. the floated 360 ° of visual field space three-dimensional display devices based on high-speed projector according to claim 1 and 2, its characteristic is that described detection module (4) is photoelectric sensor or mechanical location switch.
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| CN103676175A (en) * | 2013-12-26 | 2014-03-26 | 无锡锡飞光电科技有限公司 | Naked eye three-dimension display method |
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| CN109753153A (en) * | 2018-12-26 | 2019-05-14 | 浙江大学 | Haptic interaction device and method for 360 ° of suspension light field three-dimensional display systems |
| CN109753153B (en) * | 2018-12-26 | 2020-05-22 | 浙江大学 | Haptic interaction device and method for 360-degree suspended light field three-dimensional display system |
| CN112731681A (en) * | 2021-04-06 | 2021-04-30 | 成都工业学院 | Desktop three-dimensional display device |
| CN114740633A (en) * | 2022-04-14 | 2022-07-12 | 深圳七泽技术合伙企业(有限合伙) | Large exit pupil display device, three-dimensional volume display equipment and method |
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