CN214151356U - Be applied to assembled hemisphere curtain in unbounded projection place - Google Patents
Be applied to assembled hemisphere curtain in unbounded projection place Download PDFInfo
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- CN214151356U CN214151356U CN202023131479.2U CN202023131479U CN214151356U CN 214151356 U CN214151356 U CN 214151356U CN 202023131479 U CN202023131479 U CN 202023131479U CN 214151356 U CN214151356 U CN 214151356U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 239000012634 fragment Substances 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 12
- 238000005034 decoration Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 7
- 229920000742 Cotton Polymers 0.000 claims description 6
- 210000003205 muscle Anatomy 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 15
- 230000006870 function Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 16
- 230000004927 fusion Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
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Abstract
The utility model relates to an assembled hemisphere curtain applied to a boundless projection place and a projection method. The steel connecting disc is used as a connecting node, so that the cross beam arc-shaped keel and the vertical beam arc-shaped keel are movably hinged on the screw holes corresponding to the steel connecting disc through the anti-withdrawing screw rods, the flexible connection of a real spherical curtain steel framework is realized, the anti-deformation capability is realized, and the four inclined hinged inclined strut pipe fittings of each steel connecting disc are connected to the adjacent vertical beam arc-shaped keel respectively, so that the spherical curtain steel framework node is firm; the novel structure has the functions of deformation resistance and flexible adjustment, and is simple and rapid to assemble; in addition, in the novel projection method, the projection devices at different positions are arranged on the top of the spherical screen and the ground, so that the superposed brightness of the two machines is enough, the projection positions can be mutually corrected, and the brightness is ensured and the system safety is improved.
Description
Technical Field
The utility model relates to a boundless projection architectural decoration technical field refers in particular to an assembled hemisphere curtain who is applied to boundless projection place.
Background
The spherical screen unbounded projection is a new display technology, and breaks through the limitation that the projection image can only be a plane regular graph in the past. The user can perceive the content of the spherical projection in 360 degrees in an all-round manner, the information quantity of the user for obtaining information is increased, the user experiences unprecedented illusion due to the special curved surface and even the spherical panoramic image, and the method can be widely applied to industries such as musicals, entertainment, astronomy teaching, science popularization, advertisements, exhibitions, movies and the like.
At present, a hemispherical curtain in a hemispherical curtain steel structure main body has some defects, one of which is that the existing hemispherical curtain decorative framework is a spherical surface formed by welding an arc-shaped transverse keel and an arc-shaped vertical keel, the fixed welding structure has high requirements on the site construction process, the structure has poor deformation resistance and seismic resistance, and errors caused by fixed welding cannot be adjusted; secondly, the existing dome screen projection device is usually provided with a small number of large-view-angle (over 180 degrees) fisheye projection devices at the top in a scattered manner to perform comprehensive space display, although the large-view-angle (over 180 degrees) fisheye projection can expand the projection range, the brightness of the projection area is limited by the projection of a single projection device, the projection range is too large and the brightness is not enough, and the projection position of the single projection device cannot be corrected, so that the unbounded projection effect is influenced.
In view of this, how to improve the existing hemispherical screen decorative skeleton by using an assembly technology and how to improve the projection method of the existing projection equipment, so that the hemispherical screen has the deformation resistance and the flexible adjustment function, is simple and quick to assemble, enables all optical indexes of the unbounded projection to be suitable for the digital image projection standard, has clear picture, good color restoration effect and high brightness and contrast, realizes the full coverage of a 360-degree spherical screen virtual scene, and has the effect of correcting the projection position.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the shortcomings of the above circumstances and provides an assembled hemisphere screen applied to the unbounded projection place, which has the advantages of deformation resistance, flexible adjustment function and simple and rapid assembly, ensures that all optical indexes of unbounded projection are all suitable for the digital image projection standard, has clear picture, good color reduction effect and high brightness and contrast, realizes the full coverage of 360-degree sphere screen virtual scenes and has the effect of correcting the projection position.
In order to achieve the purpose, the novel technical scheme is as follows: the utility model provides a be applied to assembled hemisphere curtain in unbounded projection place, is equipped with hemisphere curtain decoration skeleton including hemisphere curtain steel structure main part in hemisphere curtain steel structure main part, this hemisphere curtain decoration skeleton including:
the upper spherical curtain base ring is of an annular structure formed by welding a plurality of sections of upper arc-shaped steel keels;
the lower spherical curtain base ring is of an annular structure formed by welding a plurality of sections of lower arc-shaped steel keels;
the steel connecting discs are distributed with a plurality of threaded holes;
a plurality of anti-back screws;
the single spherical curtain cross beam is formed by connecting a plurality of sections of cross beam arc keels;
the single spherical curtain vertical beam is formed by connecting a plurality of sections of vertical beam arc keels;
a plurality of diagonal bracing pipe fittings;
after installation, the top ends of a plurality of spherical curtain vertical beams are uniformly welded on the upper spherical curtain base ring at intervals, the bottom ends of a plurality of spherical curtain vertical beams are uniformly welded on the lower spherical curtain base ring at intervals, and a plurality of spherical curtain cross beams are transversely distributed on different horizontal planes of a plurality of spherical curtain vertical beams at intervals to form spherical grids; be equipped with steel connection pad in spherical curtain crossbeam and spherical curtain vertical joist handing-over department, the link of crossbeam arc fossil fragments prevents through a plurality of moving back screw rod threaded connection on steel connection pad's corresponding screw, the link of erecting roof beam arc fossil fragments prevents through a plurality of moving back screw rod threaded connection on steel connection pad's corresponding screw, every steel connection pad corresponds four bracing pipe fittings, the one end of these four bracing pipe fittings is through preventing moving back four slant bights of screw rod connection at steel connection pad respectively, the other end slant of these four bracing pipe fittings is extended and is connected respectively on the screw that adjacent vertical beam arc fossil fragments correspond through preventing moving back the screw rod.
And the plurality of spherical curtain vertical beams are also transversely connected with transverse supporting rods.
Go up dome curtain base ring top and be equipped with circular furred ceiling, this circular furred ceiling is including the furred ceiling base ring and the welding a plurality of latticed furred ceiling fossil fragments in the furred ceiling base ring, and the hanging of hemisphere curtain steel construction main part top has a plurality of hanging muscle, and a plurality of hanging muscle distribute hang on circular furred ceiling.
Hemisphere net wall of skeleton is decorated to the hemisphere curtain circular furred ceiling with the subaerial projection curtain that all is equipped with of skeleton is decorated to the hemisphere curtain.
Sound insulation cotton is laid on a plurality of latticed furred ceiling fossil fragments, and the ground of hemisphere curtain steel construction main part and wall all are equipped with sound insulation cotton in the hemisphere.
And streets with steel mesh plates are laid on the grid-shaped ceiling keels at intervals.
And a pavement ladder stand is arranged between the pavement of the circular suspended ceiling and the ground.
An inlet door and an outlet door are arranged on the hemispherical screen decorative framework.
A projection method of an assembled semispherical screen applied to an unbounded projection place comprises the following steps:
the method comprises the following steps that firstly, six projection positions are uniformly distributed on the circumference of the section of a hemispherical grid wall surface of a hemispherical screen decorative framework, each projection position is provided with two laser projectors, and the field angle of a picture of each laser projector, which faces the center of the section circle, ranges from 0 degree to 60 degrees;
step two, 8 laser projectors are arranged on the hemispherical grid ground of the hemispherical screen decorative framework, the 8 laser projectors are arranged in four rows and two columns, wherein the angle of view of the picture obliquely upwards from the two laser projectors in the first row to the close hemispherical grid wall surface is from 0 degree to 60 degrees, the angle of view of the picture obliquely upwards from the two laser projectors in the fourth row to the close hemispherical grid wall surface is from 0 degree to 60 degrees, and the four laser projectors in the second row and the third row vertically upwards project towards the circular ceiling;
and step three, 8 laser projectors are arranged on the circular suspended ceiling, the 8 laser projectors are arranged in four rows and two columns, the angle of view of the downward picture of the two laser projectors in the first row is from 0 degree to 60 degrees towards the close hemispherical grid wall surface, the angle of view of the downward picture of the two laser projectors in the fourth row is from 0 degree to 60 degrees towards the close hemispherical grid wall surface, and the four laser projectors in the second row and the fourth laser projector in the third row vertically and downwards face the ground of the hemispherical screen decorative framework for projection.
And the six projection positions in the step one are arranged at the top of the hemispherical screen decorative framework wall surface, and each projection position is provided with two laser projectors to realize automatic correction of the hemispherical screen projection system.
After the structure is adopted, the novel steel connecting disc is used as a connecting node, so that the cross beam arc-shaped keel and the vertical beam arc-shaped keel are movably hinged on the screw holes corresponding to the steel connecting disc through the anti-withdrawing screw rods, the flexible connection of a real spherical curtain steel framework is realized, the flexible connection has the deformation resistance, and the four inclined parts of each steel connecting disc are respectively hinged with the inclined strut pipe fittings to be connected on the adjacent vertical beam arc-shaped keel, so that the spherical curtain steel framework node is firm; in addition, in the novel projection method, projection devices in different positions are arranged on the top of the spherical screen and the ground, wherein 6 groups of projection devices are arranged on the top of the spherical screen in a circumferential 60-degree segmentation mode, the projection range is 60 degrees, 360-degree panorama is covered comprehensively, and two laser projectors are arranged in each group, so that the superposition brightness of the two projectors is enough, the projection positions can be corrected mutually, and the system safety is improved while the brightness is ensured; 8 laser projectors are arranged on the ground, and the effect that people stand and watch forwards is ideal through the arrangement of two rows in the middle, the arrangement of two rows in the upper and lower parts and the arrangement of projection angles. Therefore, the novel structure has the deformation resistance, the flexible adjusting function and the simple and fast assembly, the novel projection method overcomes the problems of low brightness, small fusion zone and poor unbounded projection effect of the fisheye projection with a large visual angle (exceeding 180 degrees) in the virtual reality technology of the traditional internal pitching technology, all optical indexes of unbounded projection are suitable for the digital image projection standard, the picture is clear, the color restoration effect is good, the brightness and the contrast are high, the full coverage of a 360-degree spherical screen virtual scene is realized, and the effect of projection position correction is realized.
Drawings
FIG. 1 is a schematic view of a partial structure of a hemispherical screen decorative skeleton according to an embodiment of the present invention;
FIG. 2 is a schematic front view of a hemispherical screen decorative skeleton according to an embodiment of the present invention;
FIG. 3 is a schematic view of a front structure of a hemispherical screen according to an embodiment of the present invention;
FIG. 4 is a schematic view of a circular ceiling in an embodiment of the present invention;
FIG. 5 is a schematic top view of a hemispherical screen decorative skeleton according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a packway and a front escalator of a packway in the hemispherical curtain of the present invention;
fig. 7 is a schematic perspective view of a hemispherical screen decorative skeleton according to an embodiment of the present invention;
FIG. 8 is a schematic top view of a hemispherical screen in accordance with an embodiment of the present invention;
FIG. 9 is a schematic diagram of a distribution position and a projection view of a wall projection device in a transverse cross section according to an embodiment of the present invention;
FIG. 10 is a schematic view of the distribution and projection of wall projection devices in vertical cross-section in accordance with an embodiment of the present invention;
FIG. 11 is a schematic diagram of a distribution position and a projection of a ground projection device according to an embodiment of the present invention;
fig. 12 is a schematic diagram of the distribution position and projection of the projection device according to the embodiment of the present invention.
Detailed Description
The following description of the present invention will be made in further detail with reference to the accompanying drawings 1-12.
As shown in fig. 1-8, this neotype assembled hemisphere curtain for unbounded projection place, including hemisphere curtain steel structure main part 100, be equipped with hemisphere curtain decoration skeleton 10 in hemisphere curtain steel structure main part 100, this hemisphere curtain decoration skeleton 10 is including:
the upper spherical curtain base ring 11 is of an annular structure formed by welding a plurality of sections of upper arc-shaped steel keels;
the lower spherical curtain base ring 12 is of an annular structure formed by welding a plurality of sections of lower arc-shaped steel keels;
a plurality of steel connecting discs 13, on which a plurality of threaded holes 131 are distributed;
a plurality of anti-back screws 14;
the single spherical curtain cross beam 15 is formed by connecting a plurality of sections of cross beam arc keels 151;
the spherical screen vertical beams 16 are formed by connecting a plurality of sections of vertical beam arc keels 161;
a plurality of diagonal bracing tubes 17;
after installation, the top ends of a plurality of spherical curtain vertical beams 16 are uniformly welded on the upper spherical curtain base ring 11 at intervals, the bottom ends of a plurality of spherical curtain vertical beams 16 are uniformly welded on the lower spherical curtain base ring 12 at intervals, and a plurality of spherical curtain cross beams 15 are transversely distributed on different horizontal planes of the plurality of spherical curtain vertical beams 16 at intervals to form spherical grids; be equipped with steel connection pad 13 in spherical curtain crossbeam 15 and 16 handing-over departments of spherical curtain vertical beams, crossbeam arc fossil fragments 151's link prevents moving back screw 14 threaded connection through a plurality of on steel connection pad 13's corresponding screw 131, vertical beam arc fossil fragments 161's link prevents moving back screw 14 threaded connection through a plurality of on steel connection pad 13's corresponding screw 131, every steel connection pad 13 corresponds four bracing pipe fittings 17, four slant bights at steel connection pad 13 are connected respectively through preventing moving back screw 14 to this four bracing pipe fittings 17's one end, this four bracing pipe fittings 17's other end slant is extended and is connected respectively on the screw that adjacent vertical beam arc fossil fragments 161 correspond through preventing moving back screw 14.
The plurality of spherical curtain vertical beams 16 are also transversely connected with transverse supporting rods 18.
Go up dome curtain base ring 11 top and be equipped with circular furred ceiling 20, this circular furred ceiling 20 is including furred ceiling base ring 21 and the latticed furred ceiling fossil fragments 22 of a plurality of welding in furred ceiling base ring 21, and the 100 tops of dome curtain steel construction main part hang have a plurality of to hang muscle 23, and a plurality of are hung muscle 23 and are distributed and hang on circular furred ceiling 20.
Hemisphere screen decoration skeleton 10 the hemisphere net wall the circular furred ceiling 20 with hemisphere screen decoration skeleton 10 all is equipped with the projection curtain subaerially, adopts the aluminium ball curtain of customization perforation as the projection curtain here.
Soundproof cotton is laid on a plurality of latticed furred ceiling fossil fragments 20, and the ground of hemisphere curtain steel construction main part 100 and the interior wall of hemisphere all are equipped with soundproof cotton 30.
And streets 24 of the steel mesh plate are laid on the plurality of latticed ceiling keels 20 at intervals.
A walkway ladder 25 is arranged between the walkway 24 of the circular suspended ceiling 20 and the ground.
The hemispherical screen decorative framework 20 is provided with an inlet door 26 and an outlet door 27.
As shown in fig. 9 to 12, a projection method of a fabricated dome screen applied to an unbounded projection site includes the following steps:
the method comprises the following steps that firstly, six projection positions 40 are uniformly distributed on the circumference of the section of a hemispherical grid wall surface of a hemispherical screen decorative framework 20, each projection position 40 is provided with two laser projectors, and the view angle of a picture of each laser projector facing to the center of the section circle ranges from 0 degree to 60 degrees;
step two, 8 laser projectors are arranged on the hemispherical grid ground of the hemispherical screen decorative framework 20, the 8 laser projectors are arranged in four rows and two columns, wherein the angle of view of the picture obliquely upwards from the two laser projectors 51 in the first row to the adjacent hemispherical grid wall surface is from 0 degree to 60 degrees, the angle of view of the picture obliquely upwards from the two laser projectors 52 in the fourth row to the adjacent hemispherical grid wall surface is from 0 degree to 60 degrees, and the four laser projectors 53 in the second row and the third row vertically upwards project towards the circular ceiling 20;
step three, 8 laser projectors 54 are arranged on the circular suspended ceiling 20, the 8 laser projectors 54 are arranged in four rows and two columns, wherein the two laser projectors 541 in the first row incline to the adjacent hemispherical grid wall surface and the downward picture viewing angle ranges from 0 degree to 60 degrees, the two laser projectors 542 in the fourth row incline to the adjacent hemispherical grid wall surface and the downward picture viewing angle ranges from 0 degree to 60 degrees, and the four laser projectors 543 in the second row and the third row vertically project downward to the ground of the hemispherical screen decorative framework 10.
And the six projection positions 40 in the step one are arranged at the top of the wall surface of the hemispherical screen decorative framework 10, and each projection position 40 is provided with two laser projectors for realizing automatic correction of a spherical screen projection system.
In the wall surface scheme of the embodiment, a NEC PX1005QL 10000 flow 4K laser projector is adopted, and each projection size is as follows: 10.489 × 5.9 m, each machine has a brightness per square of about: 161 lumen, the theoretical brightness after the top double-machine superposition is improved to: 322 lumens; the lens adopts an NEC original lens: NP31ZL-4K (0.74-0.93: 1), safe distance 10 meters, fusion zone at the bottom to achieve effect is: 3463mm (33%), the fusion zone at the tip is: 3955mm (37%), overall resolution: 15437 × 2160, each pixel size: 2.7mm, the viewing distance of people can be more than 2.7 meters, the effect is ideal, 12 machines with 4K and 10000 lumens are adopted at the top for superposition, the brightness is ensured, and the system safety is improved;
in the floor plan of the embodiment, 8 4K, NEC PX1005QL 10000 laser projectors were used, each projection size was 8 × 5m, each projector had a luminance of 250 lumens per square, and the lenses used NEC original lenses: NP31ZL-4K (0.74-0.93: 1), safe distance is 6 meters, the left and right fusion bands to achieve effect are: 1017mm (13%), the upper and lower fused bands are: 1667mm (33%), pixel size: 2.08mm, the effect of watching the people by standing forwards is ideal.
From the above, the steel connection disc 13 is used as a connection node, so that the cross beam arc-shaped keel 151 and the vertical beam arc-shaped keel 161 are movably hinged on the screw hole 131 corresponding to the steel connection disc 13 through the anti-withdrawing screw 14, thus realizing flexible connection of the real spherical curtain steel framework 10, having the deformation resistance, and connecting the inclined strut pipe fittings 17 hinged on four inclined sides of each steel connection disc 13 to the adjacent vertical beam arc-shaped keel 161 respectively, so that the spherical curtain steel framework 10 is firm in node; in addition, in the novel projection method, projection devices in different positions are arranged on the top of the spherical screen and the ground, wherein 6 groups of projection devices are arranged on the top of the spherical screen in a circumferential 60-degree segmentation mode, the projection range is 60 degrees, 360-degree panorama is covered comprehensively, and two laser projectors are arranged in each group, so that the superposition brightness of the two projectors is enough, the projection positions can be corrected mutually, and the system safety is improved while the brightness is ensured; 8 laser projectors are arranged on the ground, and the effect that people stand and watch forwards is ideal through the arrangement of two rows in the middle, the arrangement of two rows in the upper and lower parts and the arrangement of projection angles.
To sum up, this neotype structure has resistance to deformation, flexible regulatory function, the assembly is simple swift, this novel projection method has overcome and has adopted the big visual angle (exceeding 180 degrees) fisheye projected luminance low among the virtual reality technique of bowling technique in the tradition, the fusion takes little, the poor problem of unbounded projection effect for all optical index of unbounded projection are all fit for digital image projection standard, the picture is clear, the color reduction is effectual, luminance, contrast are high, realize 360 degrees ball screen virtual scene's full coverage, and possess the effect that the projection position was rectified.
Naturally, there are other embodiments of the invention, and it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention, and it is intended that all such changes and modifications fall within the scope of the appended claims.
Claims (8)
1. The utility model provides a be applied to assembled hemisphere curtain in unbounded projection place, is equipped with hemisphere curtain decoration skeleton, its characterized in that including hemisphere curtain steel structure main part in hemisphere curtain steel structure main part: this hemisphere curtain decorates skeleton including:
the upper spherical curtain base ring is of an annular structure formed by welding a plurality of sections of upper arc-shaped steel keels;
the lower spherical curtain base ring is of an annular structure formed by welding a plurality of sections of lower arc-shaped steel keels;
the steel connecting discs are distributed with a plurality of threaded holes;
a plurality of anti-back screws;
the single spherical curtain cross beam is formed by connecting a plurality of sections of cross beam arc keels;
the single spherical curtain vertical beam is formed by connecting a plurality of sections of vertical beam arc keels;
a plurality of diagonal bracing pipe fittings;
after installation, the top ends of a plurality of spherical curtain vertical beams are uniformly welded on the upper spherical curtain base ring at intervals, the bottom ends of a plurality of spherical curtain vertical beams are uniformly welded on the lower spherical curtain base ring at intervals, and a plurality of spherical curtain cross beams are transversely distributed on different horizontal planes of a plurality of spherical curtain vertical beams at intervals to form spherical grids; be equipped with steel connection pad in spherical curtain crossbeam and spherical curtain vertical joist handing-over department, the link of crossbeam arc fossil fragments prevents through a plurality of moving back screw rod threaded connection on steel connection pad's corresponding screw, the link of erecting roof beam arc fossil fragments prevents through a plurality of moving back screw rod threaded connection on steel connection pad's corresponding screw, every steel connection pad corresponds four bracing pipe fittings, the one end of these four bracing pipe fittings is through preventing moving back four slant bights of screw rod connection at steel connection pad respectively, the other end slant of these four bracing pipe fittings is extended and is connected respectively on the screw that adjacent vertical beam arc fossil fragments correspond through preventing moving back the screw rod.
2. The assembled semispherical screen applied to an unbounded projection place according to claim 1, characterized in that: and the plurality of spherical curtain vertical beams are also transversely connected with transverse supporting rods.
3. The assembled semispherical screen applied to an unbounded projection place according to claim 2, characterized in that: go up dome curtain base ring top and be equipped with circular furred ceiling, this circular furred ceiling is including the furred ceiling base ring and the welding a plurality of latticed furred ceiling fossil fragments in the furred ceiling base ring, and the hanging of hemisphere curtain steel construction main part top has a plurality of hanging muscle, and a plurality of hanging muscle distribute hang on circular furred ceiling.
4. The assembled semispherical screen applied to an unbounded projection place according to claim 3, characterized in that: hemisphere net wall of skeleton is decorated to the hemisphere curtain circular furred ceiling with the subaerial projection curtain that all is equipped with of skeleton is decorated to the hemisphere curtain.
5. The assembled semispherical screen applied to an unbounded projection place according to claim 4, characterized in that: sound insulation cotton is laid on a plurality of latticed furred ceiling fossil fragments, and the ground of hemisphere curtain steel construction main part and wall all are equipped with sound insulation cotton in the hemisphere.
6. The assembled semispherical screen applied to an unbounded projection place according to claim 5, characterized in that: and streets with steel mesh plates are laid on the grid-shaped ceiling keels at intervals.
7. The assembled semispherical screen applied to an unbounded projection place according to claim 6, characterized in that: and a pavement ladder stand is arranged between the pavement of the circular suspended ceiling and the ground.
8. The assembled semispherical screen applied to an unbounded projection place according to claim 7, characterized in that: an inlet door and an outlet door are arranged on the hemispherical screen decorative framework.
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| CN202023131479.2U CN214151356U (en) | 2020-12-23 | 2020-12-23 | Be applied to assembled hemisphere curtain in unbounded projection place |
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| CN202023131479.2U CN214151356U (en) | 2020-12-23 | 2020-12-23 | Be applied to assembled hemisphere curtain in unbounded projection place |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112558400A (en) * | 2020-12-23 | 2021-03-26 | 深圳时代装饰股份有限公司 | Assembled hemispherical screen applied to unbounded projection place and projection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112558400A (en) * | 2020-12-23 | 2021-03-26 | 深圳时代装饰股份有限公司 | Assembled hemispherical screen applied to unbounded projection place and projection method |
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