CN101334583A - Semi-open type stereo virtual image forming apparatus - Google Patents
Semi-open type stereo virtual image forming apparatus Download PDFInfo
- Publication number
- CN101334583A CN101334583A CNA2007100429407A CN200710042940A CN101334583A CN 101334583 A CN101334583 A CN 101334583A CN A2007100429407 A CNA2007100429407 A CN A2007100429407A CN 200710042940 A CN200710042940 A CN 200710042940A CN 101334583 A CN101334583 A CN 101334583A
- Authority
- CN
- China
- Prior art keywords
- virtual image
- image forming
- imaging device
- reflectance coating
- forming apparatus
- 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
Images
Landscapes
- Projection Apparatus (AREA)
Abstract
The invention discloses half-open typed solid virtual image imaging equipment, comprising an imaging device, a reflection film which is formed by a colourless transparent medium, has the optical characteristics of part transparence and part reflection and is obliquely arranged on the optical path of the imaging device, a frame which is used for arranging the reflection film in a certain angle; the external side surface of the frame is also provided with a light screen. The equipment of the invention is also provided with a deep-colour background plate which is arranged at the rear part of the virtual image imaging surface. As the invention is provided with the light screen and the deep-colour background plate, the optical interference of the external light beam on the reflection film is effectively solved; the gray background on the virtual image imaging surface is eliminated under the premise of clear virtual solid, the whole equipment obtains lifelike visible effect during the application, and can be widely applied to the fields such as ads, exhibition, performance, conference, propaganda, etc.
Description
Technical field
The present invention relates to the reflector art of projected light beam, relate in particular to a kind of with image projection to tilt and the screen of partial reflection on to see through the imaging device that this screen acquisition has the stereo virtual of depth feelings.
Background technology
In applications such as advertisement, displaying, performing art, meeting, propagandas, need to use imaging device regularly.Mainly be to adopt equipment such as lantern slide or projector to obtain the direct imagings of two dimension, though that above-mentioned technology is widely used defective is obvious, the object of first three-dimensional is formed the image of two dimension in the past, and imaging effect does not have stereoscopic sensation, and intuitive is poor; It two is when between the screen of the lantern slide of speaker's intervening acts image source or projector and imaging, can shelter from a part of light, makes can't project image on this regional screen and form shadow.
The imaging device that has also occurred a class utilization " Peoper's ghost (peppers ghost) " principle in the prior art.That CN1166210A discloses is a kind of " equipment that is used for demonstration active images on the background of stage ", relate to a kind of be used under the situation of using visual transmitter on the background of stage or analog the equipment of demonstration active images.Its technical scheme is to establish a reflecting surface on the floor of stage in the middle, and transparent and smooth film whole width along stage between the floor of stage and ceiling or ceiling extends.Make the lower end of film be fixed on its upper end on the position between reflecting surface and the background and then be fixed on a place that the position is more forward on the ceiling, and, the image transmitter is placed on the ceiling, is positioned at the front of the film upper end that is fixed on the there, and aims at reflecting surface.Adopt the demonstration of this equipment film and image to carry out like a cork, the reporter can enter in the image, and can not disturb therefrom on projection screen or common demonstration at a lip-deep image.But the said equipment essence is the simple reproduction to " Peoper's ghost (peppers ghost) ", exist in actual applications and much wait the technical matters that solves, as the installation of film and the adjusting of flatness, elimination of the grey figure viewed from behind etc., in above-mentioned document, all do not provide the scheme of solution.
CN1957297A discloses a kind of " projector equipment and the method that are used for pepper's ghost illusion ", and a kind of image projection equipment is provided, and comprises projector, framework and the screen of partially transparent at least.This framework is arranged to keep screen to be subjected to tension force, makes screen tilt at a certain angle with respect to the plane of departure from the light of projector; This screen has front surface, is arranged such that from the light of projector emission to reflect from this front surface; As and if this projector is arranged to projected image, makes the light that forms image incide on this screen, thereby forms the virtual image by the light from this screen reflection, and this virtual image looks and is positioned at the screen rear.
The advantage that this equipment is compared with system before is, has reduced the cost of screen.In addition, use framework and be equipped with first, second holding member and puller strap makes screen need not directly to be fixed on ceiling or the floor, and thereby the suffered tension force of screen can be conditioned.Therefore this equipment is compared the practicality that has increased equipment with the system of original technology.
But in actual applications, above-mentioned various technical scheme still has the defective that many-side is difficult to eliminate.Concrete as, the grey background color on the virtual image forming face is difficult to eliminate, and imaging surface is appeared suddenly in three dimensions, has destroyed the stereoscopic sensation and the visual effect of the virtual image.Its reason is that " Peoper's ghost " depends on the reflected image that is formed by the contrast of light and its next-door neighbour's environment and background.The light that projector generated of high lumen (more than 8000 lumens) is strong more, reflected image is strong more, and it is more that the formed virtual image looks three-dimensional, but the grey background color in no image area territory is also obvious more, reduced spectators to the non-existent perception of screen, and the cost of the projector of high lumen is also high; Otherwise adopt the projector cost of low lumen to reduce, the light that is generated is dark more, and the grey background color in no image area territory is also not obvious more, causes the formed virtual image to look also just not have stereoscopic sensation more but reflected image is light more, and the visual vivid effect of the virtual image is just poor more.
In addition, though screen of the prior art can be conditioned tension force to a certain extent, but the relax level of screen has fine distinction with factor affecting such as service time, screen sizes in concrete the enforcement, the trace adjusting to screen tension force is difficult to obtain ideal effect because puller strap has flexible speciality in the adjustment structure of prior art, and adjusted maintenance degree is also relatively poor.Its final consequence is the virtual image metamorphopsic distortion that is difficult to keep causing acquisition owing to the flatness of screen.
Therefore, be necessary this kind equipment of the prior art is improved,, improve the practicality of equipment in the hope of obtaining better result of use.
Summary of the invention
Because the above-mentioned defective of prior art, technical matters to be solved by this invention provides a kind of semi-open type stereo virtual image forming apparatus that grey white background contrast is lower, virtual image forming is effective of virtual image forming face.
For achieving the above object, the invention provides a kind of semi-open type stereo virtual image forming apparatus, comprising: an imaging device is used to provide the real image image source; One reflectance coating is formed by the water white transparency medium, has partially transparent, partial reflection optical characteristics, is obliquely installed on the light path of described imaging device; One framework is used for being obliquely installed at a certain angle described reflectance coating; Described framework also is provided with shadow shield on lateral surface, described used in sunshade board disturbs in blocking the light of extraneous light to described reflectance coating.
Owing to be provided with the shadow shield structure, it is minimum that extraneous light is dropped to the interference of reflectance coating, thus the virtual image effect that needs can select for use the imaging device of low lumen to obtain the shadow shield structure is not set the time imaging device of high lumen to obtain.Because the light intensity of imaging device reduces, the canescence background on the virtual image forming face is just not fairly obvious yet.Semi-open virtual image forming apparatus of the present invention has only sealed imaging device and reflectance coating mounting portion, and keeps the opening of back space, has obtained good imaging effect with semi-open structure.
Further, for obtaining better light contrast, described imaging device can also be provided with the dark-background plate at virtual image forming face rear portion.By the dark-background plate is set, further lower canescence background phenomenon.
Excellent good ground, by the dark-background plate being set in conjunction with employing shadow shield structure with at virtual image forming face rear portion, canescence background on the virtual image forming face disappears substantially, make virtual image forming apparatus of the present invention obtain the imaging effect true to nature that expensive in the past equipment can't obtain, solved the technical barrier that the urgent always for a long time expectation of those skilled in the art solves with cheap hardware cost.Eliminated the technical solution of canescence background in the past and often started with, required to adopt the video playback device of high-contrast, greatly improved the cost of equipment set, also can't realize eliminating fully the technical purpose of canescence background from improving the virtual image forming quality.Therefore, virtual image forming apparatus of the present invention compared with prior art has significant effect.
Also owing to adopted the film platform of particular design, the flatness adjustment that can realize reflectance coating is followed closely in the adjustment that only need screw on a plurality of fixture blocks to equipment of the present invention, makes whole equipment in use have good convenience.By means of helicitic texture, above-mentioned adjustment nail can obtain the displacement adjustment of trace, thereby can accurately control the flatness of reflectance coating.Because each parts in the film platform have all adopted the material of rigidity, thereby the position conservation degree of fixture block is good after the adjustment of film platform.
In the above-mentioned film platform structure, described chute can also comprise two section bars that split and be arranged on one " several " type fixture block guide rail between described two section bars.Each described fixture block is connected with one of described two section bars by adjusting nail, and can adjust displacement along described " several " type fixture block guide rail.
When described reflectance coating had bigger specification, the cant beam that is used to be obliquely installed described reflectance coating in the described framework was for preferably adopting segmented structure, and was provided with adjustable support column in segmentation place.Because when the reflectance coating size was big, correspondingly the deadweight of cant beam was also bigger, cant beam can be because of the deadweight sag bent in long-term the use, and the reflectance coating that causes being fixed on the cant beam is also crooked, can't keep flatness.By adopting adjustable support column, or adjust the strong point of support column, keep the linearity of cant beam, can improve the flatness of reflectance coating.
Particularly, described imaging device can be projector or flat panel TV or CRT.Adopt single imaging device, the overall dimensions that can dwindle whole imaging device help the application of imaging device and reduce cost and transport.And projector or flat panel TV or CRT are widely used imaging device, make the composition of imaging device more easy, and compatibility is stronger.
Further, described imaging device can also be to comprise projector and and the opposed projection screen of described projector that is arranged on described reflectance coating the same side.Projector that employing splits and projection screen make light path project on the reflectance coating through after the primary event, can obtain the real image of large-size in less spatial dimension.And the projector that splits is arranged on subaerial position, is convenient to regulate and control.
In conjunction with technique scheme,, can also be placed on the described framework by a jacking gear for the projection screen that splits.By regulating described jacking gear, the distance that can regulate projection screen and projector, thus control the depth of virtual image forming face accordingly.The distance of projection screen and projector is big more, and the depth of virtual image forming face is dark more; Vice versa.
Can be handling for improving, in conjunction with existing control technology, described imaging device also comprises at least one touch-screen, described touch-screen is controlled the play content of described imaging device by external signal.
Move for ease of the convenient of whole imaging device, described imaging device also comprises a plurality of rollers.
Be described further below with reference to the technique effect of accompanying drawing, to understand purpose of the present invention, feature and effect fully design of the present invention, concrete structure and generation.
Description of drawings
Fig. 1 is the schematic perspective view of the present invention's first specific embodiment;
Fig. 2 is the side schematic view behind the dismounting part shadow shield embodiment illustrated in fig. 1;
Fig. 3 is the cut-open view of film platform structure among Fig. 2;
Fig. 4 is the local enlarged diagram that structure is adjusted in the cant beam segmentation among the present invention;
Fig. 5 is the schematic perspective view of second specific embodiment of the present invention;
Fig. 6 is a schematic top plan view embodiment illustrated in fig. 5.
Embodiment
As shown in Figure 1 and Figure 2, the main element of semi-open stereo virtual image forming apparatus of the present invention mainly comprises an imaging device, a reflectance coating 2 and framework 3.
Imaging device is used to provide the real image image source.In the present embodiment, imaging device comprises projector 1 and and the projector 1 opposed projection screen 11 that is arranged on reflectance coating 2 the same sides.Projector 1 that employing splits and projection screen 11 make light path project on the reflectance coating 2 through after the primary event, can obtain the real image of large-size in less spatial dimension.And the projector 1 that splits is arranged on subaerial position, is convenient to regulate and control.
Principle of the present invention is, utilize one with 11 one-tenth 35 ° transparent reflectance coatings 2 of projection screen to 50 ° of angles, the image (real image) that projector 1 is sent reflects, and forms a high-quality virtual image in the reverse extending line corresponding position 5 of reflected ray.
Special feature of the present invention is that framework 3 is the hexahedron structure of semi open model, is used to settle reflectance coating 2 and projection screen 11.Framework 3 also is respectively arranged with shadow shield 7 on left and right, top on three facades, and shadow shield 7 be lighttight light sheet material, as common materials such as plank, dark plastic plate, dark films, is used to block the light interference of extraneous light to reflectance coating 2.Owing to be provided with the shadow shield structure, it is minimum that extraneous light is dropped to the interference of reflectance coating 2, thus the virtual image effect that needs can select for use the imaging device of low lumen to obtain the shadow shield structure is not set the time imaging device of high lumen to obtain.Because the light intensity of imaging device reduces, the canescence background on the virtual image forming face is just not fairly obvious yet.
Semi-open type stereo virtual image forming apparatus of the present invention has only sealed imaging device and reflectance coating mounting portion, and keeps the opening of back space, has obtained good virtual image forming effect with semi-open structure.
Further, for obtaining better light contrast, be provided with not reflective dark-background plate 6 (be generally black or Dark grey) consistent or bigger with the actual imaging area virtual image forming face 5 rear portions (limitting after being virtual image activity).As previously mentioned, the intensity of real image light has the dual character that deviates from the sharpness of the virtual image and contrast, therefore, for guaranteeing the sharpness of the virtual image, more or less all can produce the canescence background owing to the contrast of the virtual image and background in actual applications.By not reflective dark-background plate 6 is set, solved the canescence background problems preferably.And, in the open space of rear portion, can arrange stage property in kind and light, thereby more effectively strengthen the stereoeffect of final imaging, and the intimate insurmountable always canescence of classic method (milky) background problems that ideally solved.Compare with traditional approach, the present invention greatly reduces the requirement of installation environment, has using value widely.
In the present embodiment, by the dark-background plate being set in conjunction with employing shadow shield structure with at virtual image forming face rear portion, canescence background on the virtual image forming face disappears substantially, makes virtual image forming apparatus of the present invention obtain imaging effect true to nature, compared with prior art has significant effect.
Further, the projection screen 11 for splitting also is placed on the framework 3 by a jacking gear.Jacking gear is by being known in the prior art, and as automatically controlled a plurality of hydraulic stems that set up separately etc., not shown, this place is no longer described in detail.By regulating jacking gear, can regulate the distance of projection screen 11 and projector 1, thereby control the depth of virtual image forming face 5 accordingly.Projection screen 11 is big more with the distance of projector 1, and the depth of virtual image forming face 5 is dark more; Vice versa.
For obtaining the good optical reflecting effect, equipment of the present invention has higher requirement to the flatness of reflectance coating 2.If the flatness of reflectance coating 2 is relatively poor, will form scattering to real image light, this scattering meeting greatly reduces the viewing quality of image, is difficult to obtain vivid visual effect.Therefore how obtaining and keep reflectance coating 2 than high-flatness in long-term the use, is that the know-why of this equipment is obtained the good key problem in technology of realizing.Special feature of the present invention also is, framework 3 is provided with two film platforms 4 (structure of two film platforms 4 is identical, below only the structure of a film platform is wherein done with explanation) respectively at the both ends of reflectance coating 2.
As shown in Figure 3, film platform 4 comprises a chute affixed with framework 3, and the structure of chute mainly comprises two section bars 41,42 that split and is arranged on one " several " type fixture block guide rail 43 between two section bars 41,42 in the present embodiment.After a plurality of fixture blocks 44 clamp reflectance coating 2 by screw 441, be arranged in " several " type fixture block guide rail 43 along the length direction of reflectance coating 2 ends.Offer a plurality of adjustment holes 421 of adjusting nail 45 that are used to plug in section bar 42 side direction, each fixture block 44 is connected with section bar 42 by adjusting nail 45.Adjust nail 45 by screwing, by helicitic texture wherein, each fixture block 44 can be adjusted displacement in the chute that two section bars 41,42 and " several " type fixture block guide rail 43 are combined into.
Compare with adjustment technology in the past, the film platform 4 that is adopted among the present invention fully is fixed in the plane mount structure reflectance coating 2 in conjunction with the unitized construction of cant beam 31, has obtained a high-quality initial plane degree.After equipment used the long period, reflectance coating 2 can make whole film loose because of losing part elasticity, thereby caused catoptric imaging quality decline (distortion and generation light diffraction).By means of the threaded engagement of adjusting nail 45 and fixture block 44, the reflectance coating 2 that is clamped in wherein can be realized the adjustment of trace at any time easily, thereby guarantees the smooth of the reflecting surface that forms at the duration of entire equipment reflectance coating 2.
For guaranteeing the rigidity and the intensity of framework 3, to satisfy the portability of equipment integral simultaneously, preferably adopt aluminium alloy extrusions to constitute framework 3.In order to reduce whole framework 3 distortion that material itself causes because of deadweight under the long size deformation brings, when being applied to large-sized framework (when surpassing 3MM as cant beam single-side stand length), equipment of the present invention has also increased special adjustment scheme in cant beam 31.As shown in Figure 4, cant beam 31 is designed to two segmentation beams 311,312, and an adjustable support column 313 is set below the junction of two segmentation beams.The supporting surface of support column 313 is an inclined-plane, because deadweight is sagging when linearity is undesirable, the reflectance coating 2 that causes being fixed on the cant beam 31 is also crooked, can't keep flatness when cant beam 31.By regulating the position of support column 313, also the i.e. horizontal level of mobile supporting oblique surface just can be realized regulating two segmentation beams 311,312 height in vertical direction, thereby keep the linearity of whole cant beam 31.
Owing to adopted the film platform of particular design, the flatness adjustment that can realize reflectance coating is followed closely in the adjustment that equipment of the present invention only need be screwed on a plurality of fixture blocks, makes whole equipment in use have good convenience.By means of helicitic texture, above-mentioned adjustment nail can obtain the displacement adjustment of trace, thereby can accurately control the flatness of reflectance coating.Because each parts in the film platform have all adopted the material of rigidity, thereby the position conservation degree of fixture block is good after the adjustment of film platform.Compare with the scheme of prior art, reflectance coating is installed more simple, convenience among the present invention, and more saves, serviceable life is also longer, because the installation effect is guaranteed, thereby makes image quality also be better than classic method, final imaging deformation is littler, and light spreads out phenomenon also still less.Therefore technical scheme of the present invention has outstanding substantive distinguishing features and significant beneficial effect.
Further, above-mentioned imaging device can also be reduced to projector or flat panel display equipment or CRT and show and look equipment (as conventional television, traditional monitor etc.), or even lamp box.Only need to do an adjustment, its real image light that sends is projected on the reflectance coating with 45 roughly, can realize technical purpose of the present invention equally the installation site of imaging device.Adopt single imaging device, the overall dimensions that can dwindle whole imaging device help the application of imaging device and reduce cost and transport.And projector or flat panel TV or CRT are widely used imaging device, make the composition of imaging device more easy, and compatibility is stronger.Equipment of the present invention is also very wide in range to the requirement of video source, not only can be with various computers as video playback device, and DVD player, MP4 player even the photo that is illuminated, material object etc. can be as video source.Compare with classic method, the present invention requires lowly, also more flexible to imaging device, and compatibility is also better.
As Fig. 5, shown in Figure 6, the structure of the structure of second specific embodiment of the present invention and first specific embodiment is basic identical, institute's difference is that projector 1 is arranged on the left side, and real image imaging surface (being projection screen 11) is installed in upright position (being the right side shown in Fig. 5).Correspondingly reflectance coating 2 is installed in vertical direction, still keeps and projection screen 11 angles at 45, and reflectance coating 2 both ends are provided with film platform 4 equally respectively.On the framework 3 of reflectance coating 2 peripheries, be provided with shadow shield 7 in and arranged on left and right sides and end face respectively, be open thereby make entire equipment at virtual image forming face 5 rear sides and dark-background plate 6, make things convenient for the turnover of personnel and stage property.
So the installation site of conversion makes equipment of the present invention have better adaptability to the demonstration place, to satisfy some specific needs.
Can be handling for what improve equipment, in conjunction with existing control technology, imaging device of the present invention also comprises at least one touch-screen (not shown), this touch-screen can be controlled the play content of imaging device 1 by external signal, spectators can select the interesting content of broadcast oneself even play stereo game by touch-screen and solution of the present invention by clicking touch-screen, and the interactive interface with spectators is provided.As the extension of interactive notion, this programme is also supported spectators to pass through third party SP platform (as note or website) to carry out interaction.
Equipment of the present invention can be chosen suitable size according to the needs in demonstration place.Because the composition of imaging device is wide in range, can show to look in equipment or even the lamp box at projector, flat panel display equipment, the CRT of all size and select, and framework is formed flexibly, make the present invention not be only applicable to large scale solution (4 meters x3 rice even bigger of imaging area), more can be applied to neatly in the little space, be 2 meters x2 rice or 1 meter x1 rice even littler as imaging size.Compare with traditional approach, equipment size of the present invention is more flexible, and product line is abundanter, uses also more extensive.
Move for ease of the convenient of whole imaging device, a plurality of rollers can also be set at the imaging device downside.
In sum, described in this instructions is several preferred embodiment of the present invention, and above embodiment is only unrestricted in order to technical scheme of the present invention to be described.All technician in the art all should be within claim protection domain of the present invention under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (10)
1, a kind of semi-open type stereo virtual image forming apparatus comprises:
One imaging device is used to provide the real image image source;
One reflectance coating is formed by the water white transparency medium, has partially transparent, partial reflection optical characteristics, is obliquely installed on the light path of described imaging device;
One framework is used for being obliquely installed at a certain angle described reflectance coating; It is characterized in that:
Described framework also is provided with shadow shield on lateral surface, described used in sunshade board disturbs in blocking the light of extraneous light to described reflectance coating.
2, stereo virtual image forming apparatus as claimed in claim 1 is characterized in that: described shadow shield lays respectively at the both sides of described reflectance coating and blocks the entire emission film.
3, stereo virtual image forming apparatus as claimed in claim 1 is characterized in that: described imaging device is provided with the dark-background plate at virtual image forming face rear portion.
4, as claim 1 or 2 or 3 arbitrary described stereo virtual image forming apparatus, it is characterized in that: described framework is provided with the film platform at least one end of described reflectance coating, described film platform comprises a chute affixed with described framework, a plurality of fixture blocks are arranged in the described chute and the described reflectance coating of clamping along the length direction of described reflectance coating end, and each described fixture block can be adjusted displacement by adjusting nail in described chute.
5, stereo virtual image forming apparatus as claimed in claim 4 is characterized in that: described chute comprises two section bars that split and is arranged on one " several " type fixture block guide rail between described two section bars.
6, as claim 1 or 2 or 3 or 5 arbitrary described stereo virtual image forming apparatus, it is characterized in that: the cant beam that is used to be obliquely installed described reflectance coating in the described framework is a segmental structure, and is provided with adjustable support column in segmentation place.
7, as claim 1 or 2 or 3 or 5 arbitrary described stereo virtual image forming apparatus, it is characterized in that: described imaging device comprises projector and and the opposed projection screen of described projector that is arranged on described reflectance coating the same side.
8, stereo virtual image forming apparatus as claimed in claim 7 is characterized in that: described projection screen is placed on the described framework by a jacking gear and can regulates distance with described projector by described jacking gear.
9, as claim 1 or 2 or 3 or 5 arbitrary described stereo virtual image forming apparatus, it is characterized in that: described imaging device also comprises at least one touch-screen, and described touch-screen is controlled the play content of described imaging device by external signal.
10, as claim 1 or 2 or 3 or 5 arbitrary described stereo virtual image forming apparatus, it is characterized in that: described imaging device also comprises a plurality of rollers that are arranged on described equipment downside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100429407A CN101334583A (en) | 2007-06-28 | 2007-06-28 | Semi-open type stereo virtual image forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100429407A CN101334583A (en) | 2007-06-28 | 2007-06-28 | Semi-open type stereo virtual image forming apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101334583A true CN101334583A (en) | 2008-12-31 |
Family
ID=40197259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100429407A Pending CN101334583A (en) | 2007-06-28 | 2007-06-28 | Semi-open type stereo virtual image forming apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101334583A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208222A (en) * | 2013-04-18 | 2013-07-17 | 国家电网公司 | Electronic sand table system |
-
2007
- 2007-06-28 CN CNA2007100429407A patent/CN101334583A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208222A (en) * | 2013-04-18 | 2013-07-17 | 国家电网公司 | Electronic sand table system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101339357A (en) | Omnibearing stereo virtual image forming apparatus | |
| CA2579205C (en) | Projection apparatus and method for pepper's ghost illusion | |
| CN1240033C (en) | Display device | |
| RU2443073C2 (en) | Display device with the surrounding light | |
| US20130093646A1 (en) | Electronic display tiling apparatus and propagation based method thereof | |
| MY132545A (en) | Interlaced image projection apparatus | |
| GB2428304A (en) | Dual image projection system using separation mirror | |
| CN103389582A (en) | Display device and display method thereof | |
| CN203365807U (en) | Display device | |
| US20140168786A1 (en) | Video wall and mullion elimination structure thereof | |
| KR20150031623A (en) | Tiled display system | |
| CN201075161Y (en) | Open type stereo virtual image imaging apparatus | |
| CN201075162Y (en) | Semi-open type stereo virtual image imaging apparatus | |
| US20100188490A1 (en) | Billboards | |
| CN101334584A (en) | Open type stereo virtual image forming apparatus | |
| CN202434173U (en) | Rear-projection high-resolution advertising wall system structure with large screen | |
| CN101762965A (en) | Back projection splicing display screen | |
| WO2010095486A1 (en) | Three-dimensional display device | |
| CN201075163Y (en) | Omnibearing stereo virtual image imaging apparatus | |
| CN101334583A (en) | Semi-open type stereo virtual image forming apparatus | |
| CN101191899B (en) | Omnidirectional image-forming system | |
| US20160203744A1 (en) | Low profile simulated 3d display device | |
| GB2274225A (en) | Video display apparatus with an array of display units | |
| CN212516383U (en) | Bore hole 3D holographic interaction device | |
| CN205376024U (en) | Large screen LED splices screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081231 |