CN102053472B - Projection equipment and method for illusion of Peppers' ghost - Google Patents
Projection equipment and method for illusion of Peppers' ghost Download PDFInfo
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- CN102053472B CN102053472B CN2010105501535A CN201010550153A CN102053472B CN 102053472 B CN102053472 B CN 102053472B CN 2010105501535 A CN2010105501535 A CN 2010105501535A CN 201010550153 A CN201010550153 A CN 201010550153A CN 102053472 B CN102053472 B CN 102053472B
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- paillon foil
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/50—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels
- G02B30/56—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels by projecting aerial or floating images
Abstract
Image projection equipment (100) comprises a projector (106), a frame (108), and a partially transparent screen (110), wherein the screen (110) is kept under tension by the frame (108) and is inclined at a certain angle relative to an emission plane of light come from the projector (106); the screen (110) is provided with a front surface, so as to reflect the light emitted by the projector (106); and the projector (106) is used for projecting images and enabling the light forming the images to be emitted onto the screen (110), so that the illusion is formed by the light reflected by the screen (110), and looks like positioned behind the screen (110).
Description
The application Chinese patent application No.200480043185.9 of the same name that to be applicant Musion Systems Ltd. submit on April 1st, 2004 divides an application.
Technical field
The present invention relates to a kind of projector equipment and method.The present invention more specifically but and relate to nonexclusively and a kind ofly be arranged to thereby the image projection of object is provided to the screen that tilt, the part reflection the projector equipment of the wrong perception of depth and the method that is used for this equipment of structure.
Background technology
Project image onto that to make the observer who is positioned at screen the place ahead can observe this projection on the screen of part reflection be known, this is called so-called " Peoper's ghost (peppers ghost) " arranges, is form known in recreation ground (fairground) performance.
This image projection has been applied to conduct promotion to demonstration, wherein host (presenter) be positioned at inclination, part reflective viewing screen rear, this screen typically is tension paillon foil (tensioned foil), for example the image of automobile is projected on this screen by at least one reflecting surface, for example sees EP 0799436.The system that the position that the host is positioned at the projected image rear and host stand in screen the place ahead compares many intrinsic advantages, and wherein considerable is can not stop this projected image when the host walks when crossing over this projected image.In addition, use inclination screen makes the image viewing person feel that this image has depth and is not only two dimensional image that for example automobile looks and rotates at rotating disk.
Yet there are many relative problems in present image projection equipment, and for example, it is difficult that the installation of paillon foil proves, and this causes the inhomogeneous tension of paillon foil and the fold on the paillon foil conversely, and this has weakened the viewing quality that projects to the image on the paillon foil.In addition; in this paillon foil is installed; this paillon foil must be laid on the dustless cloth of the cleaning bigger than paillon foil or the plastic sheet (sheet); to prevent that particle from attaching on this paillon foil; these particles can scratch foil surfaces and weaken projected image viewing quality or can be as the scattering center of non-coherent scattering projected light, thereby owing to this scattered light does not have contribution to reduce the viewing quality of image to the image of watching.
In addition, owing to pepper's ghost illusion (illusion of peppers ' ghost) depends on the reflected image that the contrast by its immediate environment of light and background forms.Therefore reflected image is more strong, and reflected image looks more three-dimensional, and the color vibration is more serious, and is more clear for spectators' energy reflected image.The host may uncontrollable paillon foil the surround lighting of high brightness (high level), for example in the trade exhibition during from the surround lighting of auditorium, the surround lighting of high brightness causes the surround lighting of remarkable brightness from the reflection of screen, has reduced the intensity of reflected image on the background.In these environment, bright projector (more than 8000 lumens) is expected.Yet, use bright projector to cause unwanted illumination to penetrate projection surface and pass this paillon foil reflecting, thereby produce milky hue before the lights and around the zone of this reflected image appearance.
Another problem of image projection equipment is at present, and the projector power that these equipment use is very powerful, typically is 8000 to 27000 lumens, therefore a large amount of light is projected to the image-region that does not have object in the image.This is an inherent feature of projection and causes low contrast (contrast ratio), and this causes forming milky hue when projector is connected, and it spreads all over the film portion that projector forms image.This milky hue is not obviously expected, because it has reduced the observer to the non-existent perception of screen.
Milky hue is determined by the contrast degree that this projector provides at least in part with respect to the degree of brightness of image.Contrast is more high, and then this image is brighter for the brightness level of this milky hue.Even the projector of contrast up to 3000: 1 still launched milky photochromic accent when using in " Peoper's ghost " arranges.
Another problem relevant with some projector is keystone effect (Keystone effect), (edge is direction up and down) image that normally elongates of deformity wherein occurs owing to the inclination angle projection.When the depth perceptual important, this point is especially crucial.The solution that adopts in the projector of modern costliness is to adopt the figure adjustment to the trapezoidal distortion distortion.Yet, older, so not expensive or or even some special-purpose high definition projectors do not adopt this digital keystone correction, therefore be difficult to be configured to for the current images projector equipment.High definition (HD) projector does not provide the trapezoidal distortion adjustment, is because when increasing the trial keystone correction together with the number of pixels around the image border, causes image border these pixels on every side to look and resembles " through handling (crunched) ".In addition, when handling mobile image, the HD compromise projector projector processing speed.When this processing power is used for carrying out keystone correction and motion process simultaneously, see that when mobile image beating, Here it is " choking effect (choking effect) ".Usually we can say that video image and use the electronics keystone correction is for a change compared with the image through this processing not, will cause picture quality to reduce.
In addition, current system does not allow projected image to disappear apparently and reappears after placing the three-dimensional 3D object on the stage, and this is because screen is positioned at host's the place ahead and the most close spectators.
Summary of the invention
According to first aspect present invention, a kind of image projection equipment is provided, comprise projector, framework and at least part of transparent screen:
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 to be reflected from this front surface from the light of projector emission; And
As 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.
This equipment is that with the advantage that current system compares screen need not to apply expensive part reflectance coating, and the angle dependence relation of the reflectivity of transparent dielectric material can be used for causing the part reflection of projected image.Therefore, this simplified equipment the manufacturing of this system, and reduce its production cost.In addition, use framework to make screen need not directly to be fixed to ceiling or floor, therefore compare the practicality that increased equipment with prior art system.
This screen can be paillon foil.This paillon foil can be rolled around cylinder (cylinder) when not using.This screen can tilt about 45 ° with the plane of departure from the light of projector.This screen can comprise partially reflecting layer at front surface.
Use foil screen to reduce the weight of equipment, this allows promptly to transport this equipment between a plurality of places.In time spent not paillon foil is involved in and protects this paillon foil to avoid damage when cylinder is used in transportation, also can be implemented in and promptly transport this equipment between a plurality of places.Use the part reflective viewing screen can increase from the angle of the light of this screen reflection, and can increase spectators' virtual image perceptive intensity.
This screen can attach to framework in top edge and/or the lower edge of screen.Framework can comprise and is arranged to first and second holding members (retention member) that the screen edge zone is clipped in the middle.In this first and second holding member at least one can comprise abrasive coating, typically be sand paper, it is arranged to contact this screen.First and second holding members can comprise each pass through openings, it can be arranged to each jaw (jaw) collocation with the hold assembly that attaches to puller strap (tensioning strap) (clamping member), these openings can be arranged to receive stationary installation, thereby this screen is clamped between first and second holding members.These puller straps can attach to truss configuration (truss arrangement), and can be adjustable, so that the tension force of screen can change near screen peripheral in this truss configuration.Preferably, holding member is parallel with the truss member that comprises this truss configuration basically.
Use variable tension configuration to make fold on the screen be minimized and be uprooted ideally, to be provided for projecting image onto the smooth surface on it.Lapped face at least one holding member has increased the holding force (grip) between this holding member and the screen, has reduced the possibility of sliding when screen is supported by holding member thus.
This equipment can comprise painted (pigmented) reflection part in the optical path between projector and screen.These painted parts are catoptrical part visible spectrum only, and typically these painted parts present grey or white with respect to the observer.
Have been found that, compare with the white reflection part of use, grey reflection part in the optical path of use between projector and screen has reduced the profile of this reflection part on the screen, has also reduced milky white tone degree relevant with projector emission light when not having the subject image projection.
This painted reflection part can tilt with an angle with respect to the plane of departure from the light of projector.These parts are variable with respect to the angle of inclination from the plane of departure of the light of projector.These parts can comprise a plurality of parts, the angle of inclination that each part has independent variable with respect to the plane of departure from the light of projector.
The inclination of this reflection part can partly compensate keystone effect at least, in some cases can the full remuneration keystone effect.The apparent depth of this object and/or the variation of position when the angle of inclination of this reflection part or the variation of distance allow object to be projected on the screen.This is because the virtual image appears at the screen rear and is positioned at the real image in screen the place ahead to the equidistant position of screen.
Can there be reflection unit, typically be minute surface, it is arranged to the light from the projector projection is directed on the reflection part.Typically, this reflection unit is mounted to framework upper.This reflection part can be parallel to or be arranged essentially parallel to reflection unit.In certain embodiments, this projector can be installed on the last truss of framework and can arrange by along continuous straight runs, typically is directed to this reflection unit from the light of projector projection.
This configuration can realize keystone correction by inclination and the reflection part of screen, and is particularly useful using the HD projector with the compensation keystone effect but not use under the occasion of processing power of projector.
This reflection part can comprise with stage property (prop) on screen for the corresponding mask of spectators' apparent location.Typically, this mask will absorb at least a portion light of visible spectrum, and preferably this mask is black.Can arrange that this mask to produce a zone at screen, is not projected at this zone epigraph.For example by using sliding members, the scope of this mask and shape can change, wherein this sliding members on reflection part and the position outside it move.
This mask can be used for the feasible phantom that is positioned at the article at stage property rear and disappears and reproduction, and wherein this stage property places on the stage, is positioned at screen rear or the place ahead.
This equipment can comprise light source, is arranged to optionally shine the stage zone that comprises stage property.This light source can be white light source.
Illuminate this stage property, cause this stage property to become more visible and manifest profile better with respect to the background of dark (typically being black).This has strengthened the three-dismensional effect with the interactional projected image of stage property.Stage property equally leads light, for reducing the contrast of projected image on stage property, even when using mask in the stage property shade on reflection part, slightly as seen this projected image still keeps usually, therefore strengthened the phantom that this projected image disappears at the stage property rear.
This equipment can comprise the light source that is arranged to expose to the small part stage.This light source can place the screen rear, typically along the top of framework and/or along the either side of stage.This equipment can comprise a plurality of light sources.This equipment can comprise illumination platform (lighting desk), and described illumination platform is equipped with fader (fader) with the brightness of controlling each light source or is equipped with selecting arrangement to supply with the power supply of optionally controlling each light source.
Use this light source so that stage background tightly can the most closely mate with the color of projection surface background around the color in pepper's ghost zone and luminance brightness, except two sides all the zone of load image.This has reduced the milky hue of spectators' perception.Use a plurality of light sources to increase the homogeneity of stage illumination, lighting, be mapped to effect similar on the projection screen to produce to the illumination of launching from projector.By controlling each light source respectively, the lighting level on the stage can be controlled, closely to mate by the luminance brightness of showing the performance regulation or to shine unwanted luminance brightness on the screen prjection surface.
This projector can comprise the projector of standard, for example JVC ML4000 or Barco G5.Alternatively, this projector can comprise LCD or television indicator.This display can comprise that at least one is arranged to respond the non-light-emitting component of the control of from processor.This at least one element can form mask, is arranged to produce image at screen and does not project to zone on it.This mask can be corresponding with stage property shape and position before the lights.This stage property can be three-dimensional.
According to second aspect present invention, a kind of method that projector equipment is provided has been proposed, comprise step:
(i) framework is shelved on a plurality of lifting gears (elevation means);
(ii) shank is attached on this framework;
(iii) increase the height of this lifting gear;
(iv) add other shank;
(vi) the lower edge of screen is attached to the lower rear of framework;
(vii) improve the top edge of screen to adjoin with the positive top of framework;
(vii) the top edge of screen is attached to the positive top of framework.
This method can comprise that the form with ground jack (jack) provides lifting gear.
This method can comprise with form of film provides screen.This method can comprise that removing one from the cylindrical jacket of protection rolls up screen film.This method can comprise screen is laid on the dustless protection thin layer.
This method can comprise puts the lower edge of screen between the jaw of first holding member, and can further comprise and use stationary installation and locking device to guarantee that screen is in appropriate position, wherein this stationary installation is passed this holding member and screen, this locking device is arranged to lock this stationary installation, and this stationary installation is arranged to guarantee that locking device is in appropriate position.This method can comprise that the form with bolt provides stationary installation and provides locking device with the form of nut.
This method can comprise take-up device is attached to the holding member that adjoins with at least part of stationary installation.
This method can comprise the lower rear that take-up device is attached to framework.
This method can comprise the top edge that second holding member is attached to film screen, takes usually to be attached to the identical mode of lower edge with first holding member.This method can comprise take-up device is attached to second holding member.This method can comprise that the form with ratchet band (ratchet strap) provides strain component.
This method can comprise and rope tied up to second holding member and make this rope pass and (use to promote screen vii) in step at upper frame.
This method can comprise each take-up device of tension, so that the smooth and essentially no fold of screen.
This method can be included in upper frame and hang (depend) projector.
This method can comprise painted reflecting plate is placed between this screen and the frame front edge.This method can comprise that the light with the projector emission reflexes on the screen from this plate.
This method can comprise the truss member that forms the frame form.
According to third aspect present invention, provide the projector equipment according to the second aspect present invention structure.
Description of drawings
Referring now to accompanying drawing, only by example the present invention is described, in the accompanying drawing:
Fig. 1 is the schematically showing of projector equipment first embodiment of at least one aspect according to the present invention;
Fig. 2 is the side view of the projector equipment of Fig. 1, shows the painted reflection part that is positioned at first and second positions;
Fig. 2 a is the schematically showing of alternative projection arrangement that is applicable to the equipment of Fig. 1 and 2;
Fig. 3 is the schematically showing of projector equipment second embodiment of at least one aspect according to the present invention;
Fig. 4 is the skeleton view of Fig. 1,2 and 3 screen clamping configuration; And
Fig. 5 is the explanatory view according to the projector equipment of second aspect present invention structure.
Embodiment
With reference now to Fig. 1, Fig. 2 and Fig. 4,, projector equipment 100 comprises the box frame 102, projector 106, the supporting frame 108 that are formed by truss 104, remain on screen 110 in the supporting frame 108 and the painted reflecting plate 112 of grey.
The edge of screen 110 places between the jaw 116, and bolt 122 is set to and runs through opening 118,120 and pass screen 110.Nut 124 is connected bolt, thereby and fastened screen 110 is remained between the jaw 116.Puller strap 114 passes truss 104, and fastened by friction snap-fit arrangement 128.
Each puller strap 114 can to apply uniform tension force on screen 110 whole surfaces, be reduced and eliminate ideally the formation of fold on the screen 110 thus by individually fastening or lax, and these folds have reduced the quality that projects to the image on the screen 110.
Reflecting plate 112 is positioned at projector 106 belows, adjoins the lower front lateral part truss 104b of box frame 102.Projector 106 is directed to so that the light of being launched by projector 106 projects on the reflecting plate 112.Plate 112 tilts, and makes the light slave plate of being launched by projector 106 112 upwards reflex on the screen 110.Use the plate 112 of grey or other colors, reduced when not having image projection from the relevant milky hue of the light of projector emission.
Project the front surface reflection of the screen 110 that a part of projected light on the screen 110 can see from spectators.The host who is positioned on the screen 110 rear stages 109 also can be seen by spectators, but not overslaugh spectators watch image.
The lifting of plate 112 and reduction also allow by changing the height of image component on screen 110, change spectators to the perception of this projected image element position depth before the lights.What it is contemplated that is, this plate 112 can comprise a plurality of unitary part, and each unitary part can be promoted separately and reduce, thereby allows independent image component perception depth to be independent of other image components and change.
The non-reflection mask 136 that is stage property 138 shapes is placed on the plate 112, and this stage property is stone in this example.Stage property 138 places on the stage 109, is usually located at screen 110 rears.Place mask 136, so that plate 112 thickens in the corresponding zone, stage property 138 present positions on screen 110.This layout of mask 136 and stage property 138 makes, when the part of image or this image is passed from stage property 138, apparent the going up of a part that is projected in this image on the screen 110 or image disappears, in case and image has passed when mask 136 stops light to reflex on the zone of the screen 110 corresponding with stage property 138 positions from stage property 138, the part of this image or image is reproduced.Mask 136 size and dimensions can change, for example by moving to appropriate position and according to the size of stage property 138 and varying sized sliding panel.This also can allow the change of stage property depth perception, this is because as previously mentioned, cutter can be changed rightly to the apparent effect of the image component of variable depth, for example compare with the fuzzy image nearby of stone of intended size, the stone of identical size is fuzzy pro rata, and image is more at a distance.
With reference now to Fig. 2 a,, is applicable to that the alternative projection arrangement 200 of Fig. 1 and 2 equipment with additional truss comprises: the tilting mirrors 204 that overhangs the projector 106 of screen 110 the place ahead truss 202 and overhang the variable pitch of projector 110 the place aheads second truss 206.Projector 106 projects image onto on the minute surface 204, so that this image is projected on the reflecting plate 112 and on the screen 110.Minute surface 204 is arranged to vertical with plate 112 usually, and has among the embodiment of variable angle of inclination at plate 112, and minute surface 204 will be arranged to follow the trail of synchronously any variation at plate 112 angles of inclination usually.
Should be appreciated that the term minute surface is used herein to description and reflects all any reflecting surface that (usually above 50%, preferably above 80%) incides the light on it basically.
With reference now to Fig. 3,, projector equipment 300 is substantially similar to the projector equipment of Fig. 1 and 2, and therefore the part identical with Fig. 1 and 2 represented with the like reference numerals of 300 series.
By use computing machine 340 mask 336 is formed on the screen, thereby covers the light of projection screen 306 appropriate parts with control projection screen 306 electronically.This makes and need not to make physical mask.Computing machine 340 can be used for switching projection screen 306 zones that do not comprise the projected image part, and this has reduced milky hue relevant with these zones when using conventional projector.In addition, the picture size variation of using computing machine 340 control projection screens 306 and moving with respect to image, allow image easily scaled and be positioned on the projection screen 306, thereby strengthen spectators to depth and the mobile perception of the projected image that uses known image processing techniques.Alternatively, can under the control of computing machine 340, promote and reduce projection screen 306 or part projection screen 306, thereby strengthen spectators to the perception of the depth of projected image.
With reference now to Fig. 5,, box truss framework 500 comprises square truss member 502 and the leg truss 504 gone up.When tectonic framework 500, last truss member 502 is shelved on a plurality of ground jacks 506.Leg truss 504 firsts 508 of extending perpendicular to last truss member 502 are added to a jiao of truss member 502.Increase the height of ground jack 506 to allow to add the extention 510 of leg truss 504, till the Desired Height that obtains box truss framework 500.
Stride across the width that framework 500 retreats the stage floor 514 in the place ahead and lay dustless protection plastic sheet 515.Remove a volume screen film 518 from protection cylindrical jacket 520, and will roll up the width expansion that screen film 518 strides across stage floor 514.Film 518 places on the thin layer 515 to prevent that dust particle or other sharp protrusion are to the damage on surface.
The lower edge 522 of film 518 places between jaw 524a, the b of holding member 526, and each jaw 524a, b have the relative opening of perforation, and spacing is about 0.5m between the opening.Arrange that bolt 528 makes it pass these openings, pass film 518, and guarantee that it is positioned at the position of using each nut.Ratchet band 532 attaches to the holding member 526 that adjoins with the bolt 528 that replaces, and attaches to lateral part truss 512 subsequently, and the bolt 528 that wherein replaces has the interval that is about 1m.
To be similar to the mode that holding member 526 is attached to lower edge 522, second holding member 534 is attached to the top edge 536 of film 518.Ratchet band 538 is attached to second holding member 534.
In order to prevent that spectators from seeing this projector equipment, use both sides and the place ahead to hang curtain 546, thereby shelter this equipment and do not allow spectators see.
Claims (16)
1. an image projection equipment (100) comprises projector (106), framework (102) and at least part of transparent screen (110);
Described framework is arranged to keep described screen (110) to be subjected to tension force, makes described screen (110) tilt with an angle with respect to the plane of departure from the light of projector;
Described screen has front surface, and this front surface is arranged such that to reflect from described front surface from the light of described projector emission; And
Described projector is arranged to projected image, make the light that forms image incide on the described screen (110), thereby form the virtual image by the light from described screen reflection, the described virtual image seems to be positioned at described screen rear, and wherein said framework (102) comprises and is arranged to first and second holding members (116 that the fringe region with described screen (110) is clipped in the middle; 534), it is characterized in that: described screen is polymer foil, and described polymer foil is with described first and second holding members (116; 534) tension keeps, and essentially no fold, described first and second holding members have the fringe region of described paillon foil is clamped in therebetween parallel face generally, wherein variable paillon foil take-up device (114; 128) be configured on the position spaced of the periphery that centers on described paillon foil (110), can be at the independent tension force that changes described paillon foil on the described spaced position of paillon foil periphery, wherein said first and second holding members (116; 534) with variable paillon foil take-up device (114 more than; 532,538) be connected, described variable paillon foil take-up device extends to the paillon foil hold assembly from described framework (102), described paillon foil, described variable paillon foil take-up device and described framework are positioned on the public clinoplane, and the tension force of described paillon foil is added in described variable paillon foil take-up device (114; 532,538) and the described public clinoplane of described paillon foil (110).
2. equipment according to claim 1, wherein said take-up device comprises with the strain component of ratchet band forms or puller strap and friction lock buckle device.
3. according to claim 1 or the described equipment of claim 2, wherein:
(i) described screen tilts about 45 ° with respect to the plane of departure from the light of projector; And/or
(ii) described screen comprises the local reflex layer on the described front surface; And/or
(iii) the last lower limb of described screen attaches on the described framework; And/or
(iv) described first and second holding members comprise the respective openings (118 that runs through; 120), described opening is arranged to and is attached to puller strap (114; 532,538) opening on each jaw of the clamping component on cooperates.
4. according to claim 1 or the described equipment of claim 2, wherein provide painted reflection part (112) at the optical path between described projector and described screen.
5. equipment according to claim 4 also comprises the specular surface of adjustable angle, and the specular surface of described adjustable angle is on the optical path of (112) between described projector and the described painted reflection part.
6. equipment according to claim 4, wherein said painted reflection part is to beholder's gray.
7. equipment according to claim 4, wherein said painted reflection part tilts with an angle with respect to the plane of departure from the light of described projector.
8. equipment according to claim 4, wherein said painted reflection part is variable with respect to the angle of inclination from the plane of departure of the light of projector.
9. equipment according to claim 8, wherein said painted reflection part comprises a plurality of parts, with respect to from the vertical axle of the plane of departure of the light of described projector, described each part has the angle of inclination of independent variable.
10. equipment according to claim 4, wherein said painted reflection part (121) comprises mask (136), described mask is corresponding to the position of the stage property that is placed on described screen front or back.
11. equipment according to claim 10, wherein: (i) described mask-placement becomes to form the not zone of projects images at described screen, and/or (ii) described equipment also comprise the light source (140) that is configured to shine described stage property (138).
12. according to claim 1 or the described equipment of claim 2, comprise the light source that is configured to shine at least a portion that is positioned at the stage behind the described screen.
13. according to claim 1 or the described equipment of claim 2, wherein said projector comprise standard projector, LCD or television indicator one of them.
14. equipment according to claim 13, wherein said display comprises the non-luminous at least a element of control that is configured to respond from processor, and/or wherein said at least a element forms mask (336), described mask-placement becomes to form the not zone of projects images at described screen.
15. equipment according to claim 3, the (iv) puller strap described in the part attach to the truss device or attach to the fixed installation point that is positioned at fixed sturcture, and be adjustable, make the tension force of the screen that described truss device is interior to change around described screen periphery.
16. equipment according to claim 15, wherein said first and second holding members (116; 534) be parallel to the truss member that comprises described truss device in fact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105501535A CN102053472B (en) | 2004-04-01 | 2004-04-01 | Projection equipment and method for illusion of Peppers' ghost |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105501535A CN102053472B (en) | 2004-04-01 | 2004-04-01 | Projection equipment and method for illusion of Peppers' ghost |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2004800431859A Division CN1957297B (en) | 2004-04-01 | 2004-04-01 | Projection apparatus and method for pepper's ghost illusion |
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| Publication Number | Publication Date |
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| CN102053472A CN102053472A (en) | 2011-05-11 |
| CN102053472B true CN102053472B (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105501535A Expired - Fee Related CN102053472B (en) | 2004-04-01 | 2004-04-01 | Projection equipment and method for illusion of Peppers' ghost |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US8888295B2 (en) * | 2012-07-02 | 2014-11-18 | Disney Enterprises, Inc. | Reflective surface tensioning and cleaning system for pepper's ghost illusion |
| US20160165197A1 (en) * | 2014-05-27 | 2016-06-09 | Mediatek Inc. | Projection processor and associated method |
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| US4927238A (en) * | 1984-11-27 | 1990-05-22 | Nicholas C. Terzis | Method and apparatus for displaying a three dimensional visual image |
| US5406176A (en) * | 1994-01-12 | 1995-04-11 | Aurora Robotics Limited | Computer controlled stage lighting system |
| US5573325A (en) * | 1994-06-08 | 1996-11-12 | Encountarium, Inc. | Multi-sensory theatrical presentation structure |
| US5685625A (en) * | 1993-10-06 | 1997-11-11 | Design Magic | Apparatus and method for creating optical illusion effects |
| CN1166210A (en) * | 1995-09-20 | 1997-11-26 | 乌韦·马斯 | Device for displaying moving images in the back ground of a stage |
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2004
- 2004-04-01 CN CN2010105501535A patent/CN102053472B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4927238A (en) * | 1984-11-27 | 1990-05-22 | Nicholas C. Terzis | Method and apparatus for displaying a three dimensional visual image |
| US5685625A (en) * | 1993-10-06 | 1997-11-11 | Design Magic | Apparatus and method for creating optical illusion effects |
| US5406176A (en) * | 1994-01-12 | 1995-04-11 | Aurora Robotics Limited | Computer controlled stage lighting system |
| US5573325A (en) * | 1994-06-08 | 1996-11-12 | Encountarium, Inc. | Multi-sensory theatrical presentation structure |
| CN1166210A (en) * | 1995-09-20 | 1997-11-26 | 乌韦·马斯 | Device for displaying moving images in the back ground of a stage |
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| CN102053472A (en) | 2011-05-11 |
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