CN109660692A - A kind of holography screen system - Google Patents
A kind of holography screen system Download PDFInfo
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- CN109660692A CN109660692A CN201910119407.9A CN201910119407A CN109660692A CN 109660692 A CN109660692 A CN 109660692A CN 201910119407 A CN201910119407 A CN 201910119407A CN 109660692 A CN109660692 A CN 109660692A
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- 238000001093 holography Methods 0.000 title claims description 14
- 238000004891 communication Methods 0.000 claims abstract description 74
- 238000003384 imaging method Methods 0.000 claims abstract description 20
- 230000005484 gravity Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 238000013480 data collection Methods 0.000 claims description 5
- 241001269238 Data Species 0.000 claims description 3
- 238000000748 compression moulding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/04—Processes or apparatus for producing holograms
- G03H1/0443—Digital holography, i.e. recording holograms with digital recording means
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00204—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server
- H04N1/00244—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server with a server, e.g. an internet server
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00249—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a photographic apparatus, e.g. a photographic printer or a projector
- H04N1/00267—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a photographic apparatus, e.g. a photographic printer or a projector with a viewing or projecting apparatus, e.g. for reading image information from a film
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00795—Reading arrangements
- H04N1/00827—Arrangements for reading an image from an unusual original, e.g. 3-dimensional objects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/12—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using the sheet-feed movement or the medium-advance or the drum-rotation movement as the slow scanning component, e.g. arrangements for the main-scanning
- H04N1/126—Arrangements for the main scanning
- H04N1/1265—Arrangements for the main scanning using a holographic scanning element
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computing Systems (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Holo Graphy (AREA)
Abstract
The present invention relates to a kind of hologram fields, in particular to a kind of holographic screen system；Described kind of holographic screen system, comprising: server, three-dimensional scanner and three-dimensional image forming apparatus；The three-dimensional data that the three-dimensional scanner is suitable for scanning object is uploaded to server, and the three-dimensional data of scanning is sent to three-dimensional image forming apparatus by server, to realize holographic imaging.The three-dimensional scanner includes: main processor modules, communication module, scanning bracket, and the scan module being mounted in scanning bracket；The main processor modules are suitable for the three-dimensional data that scan module scans being sent to communication module, and then are sent to server by communication module, to complete the acquisition of three-dimensional data.
Description
Technical field
The present invention relates to a kind of hologram fields, in particular to a kind of holographic screen system.
Background technique
It is built by groups such as MAYA and 3DMAX, the model drawing of 2D is converted into 3D mould using three-dimensional modeling and three-dimensional synthesis
Type.
The synthesis of 3D model is converted into three-dimensional animation video with three-dimensional simulation technique, improves product exhibition to a certain extent
Show incomplete, process flow details embodiment degree difference problem.
In order to preferably be convenient for present customers, so needing to design a kind of holographic screen system.
Summary of the invention
The object of the present invention is to provide a kind of holographic screen systems；
In order to solve the above-mentioned technical problems, the present invention provides a kind of holographic screen systems, comprising: server, 3-D scanning dress
It sets and three-dimensional image forming apparatus；The three-dimensional data that the three-dimensional scanner is suitable for scanning object is uploaded to server, server
The three-dimensional data of scanning is sent to three-dimensional image forming apparatus, to realize holographic imaging.
Further, the three-dimensional scanner includes: main processor modules, communication module, scanning bracket, and is mounted on
Scan module in scanning bracket；The main processor modules are suitable for the three-dimensional data that scan module scans being sent to communication mould
Block, and then server is sent to by communication module, to complete the acquisition of three-dimensional data.
Further, the scan module includes at least three optics punctuates, and all optics punctuates are in same level；
The lower part of the optics punctuate is equipped with Y-axis data collection point, to acquire Y-axis data；The scanning bracket includes X-axis runing rest
With Z axis runing rest；It is equipped with driving motor inside the X-axis runing rest and Z axis runing rest, to drive scanning bracket to revolve
Turn.
Further, the outside of the X-axis runing rest is suitable for installation Z axis runing rest；The support of the Z axis runing rest
Arm is suitable for installation scan module；By the rotation of X-axis runing rest and Z axis runing rest, to drive scan module in three-dimensional space
Interior rotation.
Further, the communication module includes third wireless communication module and wire communication module；The third channel radio
News module is suitable for for three-dimensional data being sent to the third wireless communication module of host computer, to realize the transmission of three-dimensional data；It is described
Wire communication module connects a communication cable；One end of the communication cable connects wired communication module, and other end connection is upper
The wire communication module of machine, is sent to host computer for three-dimensional data.
Further, the third wireless communication module includes Local network communication unit and ethernet communication unit；The office
Domain Network Communication unit is suitable in local area network internal transmission three-dimensional data；The ethernet communication unit is suitable for transmitting by Ethernet
Three-dimensional data.
Further, the three-dimensional image forming apparatus includes: display and projecting cell；The projecting cell mounting post display
Top, the two dimensional image that display is shown becomes 3-D image, to realize the technical effect of three-dimensional imaging；It is described aobvious
Show that device and projecting cell are installed in mounting rack, so that display and projecting cell fit closely；The lower section of the display
Radiator is installed, to reduce the temperature of display.
Further, it is also equipped with the 4th wireless communication module inside the mounting rack, by the three-dimensional figure of server internal
As data are sent to display；The projecting cell includes by the four equal-sized trapezoidal thin of transparent material compression moulding
Piece；The waist of the trapezoidal thin slice, which interconnects, forms a quadrangular；Display is close in one end of the quadrangular, with
The two dimensional image that display is shown projects into 3-D image, to realize holographic imaging；Holographic technique is to utilize interference and diffraction
Principle come record and the true 3-D image of reconstructed object technology.Holography using laser as lighting source, and by light
The light that source issues is divided into two bundles, a branch of to be emitted directly toward sensitive film, another beam directive sensitive film again after the reflection of object.Two beams
Light is superimposed generation interference on sensitive film, is finally further processed using the hologram that digital picture basic principle reproduces,
Digital interference is removed, clearly hologram image is obtained；Holographic technique is computer technology, holographic technique and electronic imaging technology knot
The product of conjunction.It records hologram by electronic component, and the later period chemical treatment of image is omitted, saves the plenty of time, real
The real-time processing to image is showed.Meanwhile can carry out carrying out quantitative analysis to digital picture by computer, by calculating
To the intensity and phase distribution of image, and superposition for simulating multiple holograms etc. operates；Hologram is real three-dimensional vertical
Body image, user do not need to wear with anaglyph spectacles or other any ancillary equipments, so that it may see in different angle naked eyes
See image.Its Basic Mechanism is the amplitude and phase for utilizing optical interference method while recording Object light wave.Since the reconstruction of hologram is as light
Wave remains whole amplitudes of original Object light wave and the information of phase, therefore reproduces identical three-dimensional special as having with the original
Property；Compared with common camera work, holographic technique has recorded more information, therefore capacity is than common photo information content
Much bigger (hundred times even thousand times or more).The display of hologram is radiated on hologram by light source, this light source beam
Frequency and transmission direction and reference beam are just the same, so that it may the stereo-picture of reconstructed object.Spectators see from different perspectives, just
It can be seen that multiple sides of object, only visible to touch less than because of the only image of record；Common camera shooting is two dimension
Plane sampling, and holography is then multi-angle camera shooting, and these photos are superimposed.In order to realize three-dimensional " superposition ", need
It using the principle of interference of light, is irradiated with single light (common projector), photo-fission (the light splitting skill for reflecting object
Art) at multi beam coherent light, these optical superposition that are concerned be can be achieved with into stereopsis.
Further, the three-dimensional image forming apparatus further includes handheld terminal and power supply device；The handheld terminal is suitable for sending
Control instruction sends corresponding image data to display, required for projecting according to control instruction to server, server
3-D image；The power supply device is suitable for 3-D imaging system power supply.
Further, the handheld terminal includes gravity sensor module, the 5th wireless communication module and Keysheet module；Institute
The 5th wireless communication module is stated to be suitable for the keyboard data of the gravimetric data of gravity sensor module and Keysheet module being sent to clothes
Business device；The gravity sensor module is mounted on the inside of handheld terminal；The gravity sensor module is suitable for according to hand-held whole
The variation of end position generates different gravimetric datas, to detect handheld terminal in the variation of position in space；The power supply device
Including power supply unit and battery pack；Said supply unit is suitable for 3-D imaging system power supply；If power supply unit stops working, electricity
Pond group is suitable for 3-D imaging system power supply.
The invention has the advantages that the present invention is sent out by the object dimensional data that server scans three-dimensional scanner
It send to three-dimensional image forming apparatus, to realize holographic imaging.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the functional block diagram of holographic screen system preferred embodiment of the invention；
Fig. 2 is the three-dimensional scanner structure chart of holographic screen system preferred embodiment of the invention；
Fig. 3 is the scan module structure chart of holographic screen system preferred embodiment of the invention；
Fig. 4 is the three-dimensional image forming apparatus structure chart of holographic screen system preferred embodiment of the invention；
Fig. 5 is the projecting cell structure chart of the three-dimensional image forming apparatus of holographic screen system preferred embodiment of the invention；
Fig. 6 is the handheld terminal structure chart of the three-dimensional image forming apparatus of holographic screen system preferred embodiment of the invention；
Fig. 7 is the server architecture figure of holographic screen system preferred embodiment of the invention.
In figure:
1 is scanning bracket, and 101 be X-axis runing rest, and 102 be Z axis runing rest, and 103 be driving motor, and 104 be branch gripping arm；
2 be scan module, and 201 be optics punctuate 201；
3 be Y-axis data collection point；
4 be display, and 5 be projecting cell, and 6 be radiator, and 7 be power supply device, and 8 be handheld terminal, and 801 be gravity sensor
Module, 802 be Keysheet module.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
Fig. 1 is the functional block diagram of holographic screen system preferred embodiment of the invention.
Fig. 7 is the server architecture figure of holographic screen system preferred embodiment of the invention.
As shown in Figure 1 and Figure 7, the present invention provides a kind of holographic screen systems, comprising: server, three-dimensional scanner
And three-dimensional image forming apparatus；The three-dimensional data that the three-dimensional scanner is suitable for scanning object is uploaded to server, and server will
The three-dimensional data of scanning is sent to three-dimensional image forming apparatus, to realize holographic imaging；The server includes: the first wireless telecommunications mould
Block, the second wireless communication module and three dimensional device；First wireless communication module is suitable for three-dimensional data being sent to the second nothing
Line communication module, three dimensional device generate 3-D image according to the three-dimensional data that the second wireless communication module issues；First nothing
Line communication module is also connected with transcoding module, database and acquisition module；The acquisition module is suitable for receiving three dimensions of acquisition
According to；The database is suitable for storing collected three-dimensional data；The transcoding module is suitable for three-dimensional data transcoding, in order to the
One wireless communication module is sent；In the present embodiment, the database is equipped with hyperdisk array, to store three dimensions of scanning
According to；The disk array is divided into master disk array and from disk array；If master disk array is abnormal, drive from disk array work
Make；The transcoding module is suitable for the three-dimensional information of scanning becoming several data blocks being stored in disk array；And then it is integrated into
Three-dimensional data；And three-dimensional data is sent by first wireless communication module；The second wireless communication module connection is whole
Mold block, mobile hard disk and three dimensional device；The data sent by integrating module integrated first wireless communication module；Pass through movement
Hard-disc storage data；Collected three-dimensional data is changed into 3-D image by three dimensional device；The module of integrating is suitable for inciting somebody to action
The three-dimensional data that second wireless communication module receives, is integrated into several display data blocks；To be stored in mobile hard disk；The shifting
Dynamic hard disk is equipped with buffer area and memory block；The memory block is suitable for storage display data block；The buffer area is suitable for show number
It is decompressed in advance according to block, in order to which three dimensional device uses display data.
Fig. 2 is the three-dimensional scanner structure chart of holographic screen system preferred embodiment of the invention.
Fig. 3 is the scan module structure chart of holographic screen system preferred embodiment of the invention.
As shown in Figures 2 and 3, in the present embodiment, the three-dimensional scanner includes: main processor modules, communication mould
Block, scanning bracket 1, and the scan module 2 being mounted in scanning bracket 1；The main processor modules are suitable for scan module 2
The three-dimensional data of scanning is sent to communication module, and then is sent to server by communication module, to complete adopting for three-dimensional data
Collection.
In the present embodiment, the scan module 2 includes at least three optics punctuates 201, and all optics punctuates 201
In same level；The lower part of the optics punctuate 201 is equipped with Y-axis data collection point 3, to acquire Y-axis data；The scanning branch
Frame 1 includes X-axis runing rest 101 and Z axis runing rest 102；Inside the X-axis runing rest 101 and Z axis runing rest 102
It is equipped with driving motor 103, to drive scanning bracket 1 to rotate.
In the present embodiment, the outside of the X-axis runing rest 101 is suitable for installation Z axis runing rest 102；The Z axis rotation
The branch gripping arm 104 for turning bracket 102 is suitable for installation scan module 2；Pass through the rotation of X-axis runing rest 101 and Z axis runing rest 102
Turn, to drive scan module 2 to rotate in three-dimensional space.
In the present embodiment, the communication module includes third communication module and wire communication module；The third communication
Module is suitable for for three-dimensional data being sent to the third communication module of host computer, to realize the transmission of three-dimensional data；The cable modem
It interrogates module and connects a communication cable；One end of the communication cable connects wired communication module, and other end connection host computer has
Line communication module, is sent to host computer for three-dimensional data.
In the present embodiment, the third communication module includes Local network communication unit and ethernet communication unit；It is described
LAN communication unit is suitable in local area network internal transmission three-dimensional data；The ethernet communication unit is suitable for passing by Ethernet
Defeated three-dimensional data.
Fig. 4 is the three-dimensional image forming apparatus structure chart of holographic screen system preferred embodiment of the invention.
Fig. 5 is the projecting cell structure chart of the three-dimensional image forming apparatus of holographic screen system preferred embodiment of the invention.
Fig. 6 is the handheld terminal structure chart of the three-dimensional image forming apparatus of holographic screen system preferred embodiment of the invention.
As shown in Figure 4, Figure 5 and Figure 6, in the present embodiment, the three-dimensional image forming apparatus includes: that display 4 and projection are single
Member 5；The top of the 5 mounting post display 4 of projecting cell, becomes 3-D image for the two dimensional image that display 4 is shown, from
And realize the technical effect of three-dimensional imaging；The display 4 and projecting cell 5 are installed in mounting rack, so that 4 He of display
Projecting cell 5 fits closely；The lower section of the display 4 is equipped with radiator 6, to reduce the temperature of display 4.
In the present embodiment, it is also equipped with the 4th wireless communication module inside the mounting rack, by server internal
3 d image data is sent to display 4；The projecting cell 5 includes equal-sized by four of transparent material compression moulding
Trapezoidal thin slice；The waist of the trapezoidal thin slice, which interconnects, forms a quadrangular；It is close to aobvious in one end of the quadrangular
Show device 4, the two dimensional image that display 4 is shown is projected into 3-D image.
In the present embodiment, the 3-D imaging system further includes handheld terminal 8 and power supply device 7；The handheld terminal 8
Suitable for sending control instruction to server, server sends corresponding image data to display 4, with projection according to control instruction
Required 3-D image；The power supply device 7 is suitable for 3-D imaging system power supply.
In the present embodiment, the handheld terminal 8 include gravity sensor module 801, the 5th wireless communication module and
Keysheet module 802；5th wireless communication module is suitable for the gravimetric data and Keysheet module of gravity sensor module 801
802 keyboard data is sent to server；The gravity sensor module 801 is mounted on the inside of handheld terminal 8；The gravity
Sensor module 801 is suitable for generating different gravimetric datas according to the variation of 8 position of handheld terminal, is existed with detecting handheld terminal 8
The variation of position in space；The power supply device 7 includes power supply unit and battery pack；Said supply unit is suitable for three-dimensional imaging
System power supply；If power supply unit stops working, battery pack is suitable for 3-D imaging system power supply.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (10)
1. a kind of holography screen system, which is characterized in that including
Server, three-dimensional scanner and three-dimensional image forming apparatus；
The three-dimensional data that the three-dimensional scanner is suitable for scanning object is uploaded to server, and server is by three dimensions of scanning
According to three-dimensional image forming apparatus is sent to, to realize holographic imaging.
2. holography screen system according to claim 1, which is characterized in that
The three-dimensional scanner includes: main processor modules, communication module, scanning bracket, and is mounted in scanning bracket
Scan module；
The main processor modules are suitable for for the three-dimensional data that scan module scans being sent to communication module, and then pass through communication mould
Block is sent to server, to complete the acquisition of three-dimensional data.
3. holography screen system according to claim 2, which is characterized in that
The scan module includes at least three optics punctuates, and all optics punctuates are in same level；
The lower part of the optics punctuate is equipped with Y-axis data collection point, to acquire Y-axis data；
The scanning bracket includes X-axis runing rest and Z axis runing rest；
It is equipped with driving motor inside the X-axis runing rest and Z axis runing rest, to drive scanning bracket to rotate.
4. holography screen system according to claim 3, which is characterized in that
The outside of the X-axis runing rest is suitable for installation Z axis runing rest；
The branch gripping arm of the Z axis runing rest is suitable for installation scan module；
By the rotation of X-axis runing rest and Z axis runing rest, to drive scan module to rotate in three-dimensional space.
5. holography screen system according to claim 2, which is characterized in that
The communication module includes third wireless communication module and wire communication module；
The third wireless communication module is suitable for for three-dimensional data being sent to the third wireless communication module of host computer, to realize three
The transmission of dimension data；
The wire communication module connects a communication cable；
One end of the communication cable connects wired communication module, and the other end connects the wire communication module of host computer, by three
Dimension data is sent to host computer.
6. holography screen system according to claim 5, which is characterized in that
The third wireless communication module includes Local network communication unit and ethernet communication unit；
The LAN communication unit is suitable in local area network internal transmission three-dimensional data；
The ethernet communication unit is suitable for transmitting three-dimensional data by Ethernet.
7. holography screen system according to claim 1, which is characterized in that
The three-dimensional image forming apparatus includes: display and projecting cell；The top of the projecting cell mounting post display, will
The two dimensional image that display is shown becomes 3-D image, to realize the technical effect of three-dimensional imaging；
The display and projecting cell are installed in mounting rack, so that display and projecting cell fit closely；
Radiator is installed below the display, to reduce the temperature of display.
8. holography screen system according to claim 7, which is characterized in that
It is also equipped with the 4th wireless communication module inside the mounting rack, the 3 d image data of server internal is sent to
Display；
The projecting cell includes four equal-sized trapezoidal thin slices by transparent material compression moulding；
The waist of the trapezoidal thin slice, which interconnects, forms a quadrangular；
Display is close in one end of the quadrangular, and the two dimensional image that display is shown projects into 3-D image.
9. holography screen system according to claim 8, which is characterized in that
The three-dimensional image forming apparatus further includes handheld terminal and power supply device；
The handheld terminal is suitable for sending control instruction to server, and server sends corresponding image data according to control instruction
To display, to project required 3-D image；The power supply device is suitable for 3-D imaging system power supply.
10. holography screen system according to claim 9, which is characterized in that
The handheld terminal includes gravity sensor module, the 5th wireless communication module and Keysheet module；
5th wireless communication module is suitable for sending out the keyboard data of the gravimetric data of gravity sensor module and Keysheet module
It send to server；
The gravity sensor module is mounted on the inside of handheld terminal；
The gravity sensor module is suitable for generating different gravimetric datas according to the variation of handheld terminal position, hand-held to detect
Variation of the terminal in position in space；
The power supply device includes power supply unit and battery pack；
Said supply unit is suitable for 3-D imaging system power supply；
If power supply unit stops working, battery pack is suitable for 3-D imaging system power supply.
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| CN201910119407.9A CN109660692A (en) | 2019-02-18 | 2019-02-18 | A kind of holography screen system |
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| CN201910119407.9A CN109660692A (en) | 2019-02-18 | 2019-02-18 | A kind of holography screen system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113724627A (en) * | 2021-09-02 | 2021-11-30 | 北京福务生教育科技有限公司 | Exhibition and exhibition promotion display device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113724627A (en) * | 2021-09-02 | 2021-11-30 | 北京福务生教育科技有限公司 | Exhibition and exhibition promotion display device and method |
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Application publication date: 20190419 |