CN201075163Y - Omnibearing stereo virtual image imaging apparatus - Google Patents
Omnibearing stereo virtual image imaging apparatus Download PDFInfo
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- CN201075163Y CN201075163Y CNU2007200719829U CN200720071982U CN201075163Y CN 201075163 Y CN201075163 Y CN 201075163Y CN U2007200719829 U CNU2007200719829 U CN U2007200719829U CN 200720071982 U CN200720071982 U CN 200720071982U CN 201075163 Y CN201075163 Y CN 201075163Y
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- imaging device
- reflectance coating
- virtual image
- image forming
- forming apparatus
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Abstract
The utility model discloses an omnibearing solid virtual imaging equipment, comprising an imaging device used for providing real image source and a frame used for arranging a reflective film in a certain inclined angle; the reflective film is made of colorless and transparent medium, has the optical characteristic of part transparence and part reflection and is obliquely arranged on the optical path of the imaging device. The frame is in multi-pyramid shape and is used for arranging a plurality of the reflective films with the same inclined angles in multiple directions. The imaging device is a plurality of projectors or panel display equipment or CRTs or lamphouses, which are arranged on the position corresponding to a plurality of the reflective films. As the frame with special structure and shape is adopted, a plurality of reflective films are obliquely arranged in multiple directions at the same time and a plurality of real image sources corresponding to the positions of the reflective films are matched, the utility model obtains strong relief perception, the solid virtual images which can be viewed at the same time in multi-angle, thus the whole equipment obtains realistic visual effect when in use and can be widely applied to fields such as advertisements, exhibitions, performances, conferences, propaganda, etc.
Description
Technical field
The utility model 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 just to the simple reproduction of " Peoper's ghost (peppers ghost) ", can only satisfy spectators watch stereo virtual from a certain specific direction requirement.
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, three-dimensional virtual image forming also had further demand.Concrete as, be the notice that attracts spectators, the exhibitor often wishes to spectators with unexpected image effect.On the other hand, spectators are by after the viewing and admiring of a certain specific direction, and curiosity can be ordered about its side and back structure of observing whole equipment.Therefore, as utilize spectators' further demand and curiosity, continue to attract spectators' notice, become a developing direction of such device.
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.
The utility model content
Because the above-mentioned defective of prior art, but technical problem to be solved in the utility model provides the stereo virtual image forming apparatus of a kind of multi-angle, comprehensive formation stereo virtual.
For achieving the above object, the utility model provides a kind of omnibearing stereo virtual image forming apparatus, comprising: an imaging device is used to provide the real image image source; One framework is used for certain angle of inclination reflectance coating being set; Described 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; Described framework is a polygonal pyramid shape, is used for so that the same tilt angle is multi-faceted a plurality of described reflectance coatings being set.Described imaging device is a plurality of projector or flat panel display equipment or CRT or lamp box, is arranged on and a plurality of described reflectance coating opposite positions.
Because equipment of the present utility model has adopted the framework of special construction, shape, on a plurality of orientation, tilt to install a plurality of reflectance coatings simultaneously, cooperation is with a plurality of real images source corresponding with the reflectance coating position, make equipment of the present utility model obtain the technical purpose of multi-angle, multi-faceted formation stereo virtual, obtained the stereo virtual that stereoscopic sensation is strong, can watch simultaneously for multi-angle.
In force, technique scheme does not need special film source of making, but need control many playback equipments simultaneously, and the synchronism of play operation is had higher requirement.
Therefore, outstanding good ground, in technique scheme, described imaging device can also replace with a large-sized projector or flat panel display equipment or CRT or lamp box, this large-sized imaging device with the corresponding position of described a plurality of reflectance coatings on be distributed with the real image imaging surface.
Adopt the technical scheme in the single real image of large scale source, need special film source of making, promptly according to the number of reflectance coating with the orientation is set, on a broadcast plane, provide the real image imaging identical, corresponding simultaneously, and these a plurality of real image imagings are projected on a plurality of reflectance coatings that are positioned at different azimuth synchronously with the orientation of reflectance coating with the number of reflectance coating.Though adopt the cost of manufacture height of this technical scheme film source in early stage, fabrication cycle is long, to compare with the technical scheme that adopts a plurality of independent real image film sources, this technical scheme has remarkable advantages in the later stage broadcast.The first, playback equipment is few, only needs a playback equipment, and therefore the cost of whole imaging device obviously reduces.It two is, playing program is simple, only needs playback equipment of control, and the therefore synchronism problem that does not exist the broadcast simultaneously of many playback equipments to run into has more perfect stereoeffect when watching imaging multi-faceted.
In the above-mentioned various technical scheme, described polygonal pyramid shape framework can be the space structure of triangular pyramid or rectangular pyramid or pentagonal pyramid or various rules such as hexagonal pyramid or eight pyramids.
Another special character of omnibearing stereo virtual image forming apparatus of the present utility model is, 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.
Equipment of the present utility model is owing to adopted the film platform of particular design, and the flatness adjustment that can realize reflectance coating is followed closely in the adjustment that only need screw 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.
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.
As another improvement, described imaging device is arranged on the jacking gear and can rises or descend by described relatively framework.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.
Be described further below with reference to the technique effect of accompanying drawing, to understand the purpose of this utility model, feature and effect fully design of the present utility model, concrete structure and generation.
Description of drawings
Fig. 1 is the schematic perspective view of the utility model first specific embodiment;
Fig. 2 is the schematic top plan view behind the middle removal imaging device embodiment illustrated in fig. 1;
Fig. 3 is the elevational schematic view of middle imaging device layout embodiment illustrated in fig. 1;
Fig. 4 is the stereo virtual imaging effect synoptic diagram of a side embodiment illustrated in fig. 1;
Fig. 5 is the cut-open view of middle film platform structure embodiment illustrated in fig. 1;
Fig. 6 is the local enlarged diagram that structure is adjusted in the cant beam segmentation in the utility model;
Fig. 7 is the elevational schematic view of the imaging device layout in second specific embodiment of the present utility model.
Embodiment
As Fig. 1, Fig. 2 and shown in Figure 3, the main element of omnibearing stereo virtual image forming apparatus of the present utility model mainly comprises imaging device, reflectance coating 2 and framework 3.
Imaging device is used to provide the real image image source.In the present embodiment, imaging device comprises four projection screens 11 and the projector separately 1 thereof that is arranged on four reflectance coating 2 opposite positions.
Principle of the present utility model is, utilizes a plurality of and 11 one-tenth 35 ° transparent reflectance coatings 2 to 50 ° of angles of projection screen, and the image (real image) that projection screen 11 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 utility model is that framework 3 is a rectangular pyramid shape, is used for the same tilt angle four reflectance coatings 2 being set on four different azimuth.
In the present embodiment, above framework 3, hang respectively and be provided with four projector 1 with corresponding position, four reflectance coating 2 positions, projection screen 11 by separately projects the real image image on the corresponding reflectance coating 2 with 45 ° angle roughly, to satisfy the requirement of 2 pairs of real image image sources of four reflectance coatings.
Adopt many projector 1 with " in parallel (and both simultaneously, synchronous working but do not disturb mutually) " mode the technical scheme of real image image source is provided from a plurality of orientation simultaneously, have film source and make simply, fabrication cycle is short, become advantage such as this locality.Because, the simple show activity of image not high, have certain advantage concerning imaging requirements.For obtaining good omni-directional visual effect, the broadcast operation of many projector must guarantee the synchronism of height but obviously.Therefore, the synchronism to play operation requires just obviously to improve in playing process.
As shown in Figure 4, omnibearing stereo virtual image forming apparatus of the present utility model is owing to adopted the framework of pyramid special construction, shape, on a plurality of orientation, tilt to install a plurality of reflectance coatings simultaneously, cooperation is with a plurality of real images source corresponding with the reflectance coating position, make equipment of the present utility model obtain the technical purpose of multi-angle, multi-faceted formation stereo virtual, obtained the stereo virtual that stereoscopic sensation is strong, can watch simultaneously for multi-angle.
Further, for projector 1 and projection screen 11, also pass through a jacking gear independent suspension above framework 3.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 between projection screen 11 and the reflectance coating 2, thereby control the depth of virtual image forming face 5 accordingly.Projection screen 11 is big more with the distance of reflectance coating 2, 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 utility model 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 utility model also is, framework 3 is provided with two film platforms 4 (structure of two film platforms 4 is identical, and the width dimensions difference below is only done with explanation the structure of a film platform wherein) respectively at the both ends of reflectance coating 2.
As shown in Figure 5, 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 in the utility model 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 utility model has also increased special adjustment scheme in cant beam 31.As shown in Figure 6, 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 utility model 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 in the utility model, 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 the technical solution of the utility model has outstanding substantive distinguishing features and significant beneficial effect.
Further, above-mentioned imaging device can also be reduced to flat panel display equipment or CRT shows the equipment (as conventional television, traditional monitor etc.) of looking, or even lamp box, make its real image light that sends with roughly 45 jiaos project on the reflectance coating 2, can realize technical purpose of the present utility model equally.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 utility model 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 utility model requires lowly, also more flexible to imaging device, and compatibility is also better.
Further, the environment that is provided with of whole comprehensive virtual image forming apparatus is good with brightness a little less than common daylighting illuminance, to obtain better light contrast, shows the stereoeffect of the virtual image especially.
In the bottom surface of whole comprehensive virtual image forming apparatus (especially being slightly larger than the vertical plane scope of reflectance coating), normally on ground or the stage, be provided with not reflective dark base plate (being generally black or Dark grey, not shown).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.Ideally solved the insurmountable always canescence of classic method (milky) background problems by not reflective dark base plate being set, being close to.Compare with traditional approach, the present invention greatly reduces the requirement of installation environment, has using value widely.
As shown in Figure 7, the structure of the structure of second specific embodiment of the present utility model and first specific embodiment is basic identical, institute's difference is, imaging device is a large-sized projector 1 and a projection screen 11, this large-sized imaging device with four reflectance coatings, 2 corresponding positions on be distributed with real image imaging surface 111,112,113,114.
Adopt the technical scheme in the single real image of large scale source, can be on the real image imaging surface in each orientation synchronous playing film source independently, concrete as in the present embodiment, four real image imagings corresponding with the orientation of reflectance coating 2 are provided on four different real image imaging surfaces 111,112,113,114 simultaneously, and four real image imagings are projected on four reflectance coatings 2 that are positioned at different azimuth synchronously.Though adopt the cost of manufacture height of this technical scheme film source in early stage, fabrication cycle is long, to compare with the technical scheme that adopts a plurality of independent real image film sources, this technical scheme has remarkable advantages in the later stage broadcast.The first, playback equipment is few, only needs a projector, and therefore the cost of whole imaging device obviously reduces.It two is, playing program is simple, only needs projector of control, does not therefore have the synchronism problem, has more perfect stereoeffect when watching virtual image forming multi-faceted.
Specifically, technical scheme in the single real image of large scale source, if play the multimachine parallactic angle degree of same object and the film source of process post-production, can be implemented in the stereo virtual of seeing same object different angles on the different azimuth, obtain to be close to perfect holographic visual effect.
Can be handling for what improve equipment, in conjunction with existing control technology, imaging device of the present utility model also comprises at least one touch-screen (not shown), this touch-screen can be controlled the play content of projector 1 by external signal, spectators can select the interesting content of broadcast oneself even play stereo game by touch-screen and the utility model solution 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 utility model 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 utility model not be only applicable to large scale solution (4 meters * 3 meters even bigger of imaging areas), more can be applied to neatly in the little space, be 2 meters * 2 meters or 1 meter * 1 meter even littler as imaging size.Compare with traditional approach, equipment size of the present utility model is more flexible, and product line is abundanter, uses also more extensive.
In sum, described in this instructions is several preferred embodiment of the present utility model, and above embodiment is only unrestricted in order to the explanation the technical solution of the utility model.All technician in the art comply with design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be within claim protection domain of the present utility model.
Claims (8)
1. omnibearing stereo virtual image forming apparatus comprises:
One imaging device is used to provide the real image image source;
One framework is used for certain angle of inclination reflectance coating being set;
Described 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; It is characterized in that:
Described framework is a polygonal pyramid shape, is used for so that the same tilt angle is multi-faceted a plurality of described reflectance coatings being set.
2. stereo virtual image forming apparatus as claimed in claim 1 is characterized in that: described imaging device is a plurality of projector or flat panel display equipment or CRT or lamp box, is arranged on and a plurality of described reflectance coating opposite positions.
3. stereo virtual image forming apparatus as claimed in claim 1 is characterized in that: described imaging device is a projector or flat panel display equipment or CRT or lamp box, with the corresponding position of described a plurality of reflectance coatings on be distributed with the real image imaging surface.
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 arbitrary described stereo virtual image forming apparatus, it is characterized in that: described imaging device is arranged on the jacking gear and can rises or descend by described relatively framework.
8. 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200719829U CN201075163Y (en) | 2007-07-02 | 2007-07-02 | Omnibearing stereo virtual image imaging apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200719829U CN201075163Y (en) | 2007-07-02 | 2007-07-02 | Omnibearing stereo virtual image imaging apparatus |
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| CN201075163Y true CN201075163Y (en) | 2008-06-18 |
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| CNU2007200719829U Expired - Fee Related CN201075163Y (en) | 2007-07-02 | 2007-07-02 | Omnibearing stereo virtual image imaging apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163721A (en) * | 2012-11-23 | 2013-06-19 | 西安灵境科技有限公司 | Stereo imaging type phantom imaging device and control method thereof |
| CN107784895A (en) * | 2016-08-26 | 2018-03-09 | 胡小州 | A kind of projection arrangement and system for Writing-painting |
-
2007
- 2007-07-02 CN CNU2007200719829U patent/CN201075163Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163721A (en) * | 2012-11-23 | 2013-06-19 | 西安灵境科技有限公司 | Stereo imaging type phantom imaging device and control method thereof |
| CN107784895A (en) * | 2016-08-26 | 2018-03-09 | 胡小州 | A kind of projection arrangement and system for Writing-painting |
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Granted publication date: 20080618 |