CN110888296A - Super-large flexible holographic screen and hard holographic screen based on super-large application scene - Google Patents
Super-large flexible holographic screen and hard holographic screen based on super-large application scene Download PDFInfo
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- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
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Abstract
The invention relates to the field of 3D display, and discloses an oversized flexible holographic screen based on an oversized application scene, which comprises a plurality of flexible holographic projection units which are arranged in a matrix and bonded together, wherein the oversized flexible holographic screen and the flexible holographic projection units are of flexible bendable structures, the flexible holographic projection units are formed by bonding two layers of flexible base element films through transparent glue, and a single-layer flexible base element film consists of a plurality of reflecting layers and transparent layers which are arranged in parallel at intervals, compared with the existing high-precision optical glass processing, on one hand, the flexible base element film has lower material cost, on the other hand, the flexible base element film is not easy to break when being processed, the problems of residual stress and the like generated in the glass processing process can be avoided, the yield is greatly improved, the flexible holographic screen is suitable for large-scale popularization, meanwhile, the flexible holographic film can be made into a scroll screen, a curved screen and the like, has higher, the occupied space is small.
Description
Technical Field
The invention relates to the field of 3D display, in particular to a holographic projection screen based on a super-large application scene.
Background
The 3D display technology is capable of displaying a stereoscopic picture in space, and is a main stream direction of the next generation display technology. Although there are many solutions for realizing 3D display, such as volume display technology, stereo image pair technology, pepper's ear illusion, etc., there is no perfect 3D solution at present, and the main reason is the lack of optical glass element for large area light source manipulation.
The traditional optical glass processing technology can only process microstructures at a scale of hundreds of microns, high-precision large-area optical processing needs and high processing cost, and the problems of breakage, residual stress and the like easily occur in the processing process because the optical glass is made of hard materials.
The 3D that is a little bigger shows the projection screen usually is tens of inches to tens of inches, but super large 3D shows the projection screen usually is tens of inches to hundreds of inches (diagonal), and is bigger even, when being similar to football court or other super large open-air scenes carry out practical application, because the reason in the aspect of manufacturing process, installation, transportation, machinery, etc., need splice into super large holographic projection screen by a plurality of less projection unit usually, including the breakable characteristic of optical glass who constitutes every projection unit, still need set up some structures and protect and support the glass of every projection unit, make holographic projection screen whole heavier, be unfavorable for dismouting and maintenance.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the defects of the prior art, the holographic projection screen based on the super-large application scene is provided.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the ultra-large flexible holographic screen based on the ultra-large application scene comprises a plurality of flexible holographic projection units which are arranged in a matrix and bonded together, wherein the ultra-large flexible holographic screen and the flexible holographic projection units are both flexible bendable structures, the flexible holographic projection units are formed by bonding two layers of flexible element films through transparent glue, and a single layer of the flexible element film consists of a plurality of reflecting layers and transparent layers which are arranged in parallel at intervals;
the reflecting layer is a reflecting film with a light ray reflecting function and is used for reflecting light rays;
the transparent layer is used for transmitting light;
the reflecting layers and the transparent layers between the two layers of flexible substrate films forming the flexible holographic projection unit are staggered at an included angle theta to form a grid (4), wherein theta is more than or equal to 87 degrees and less than or equal to 93 degrees, and preferably is 90 degrees;
the horizontal clamping drooping length of the flexible holographic projection unit is H (cm), the foldable number of times is n, and the flexible holographic projection unit meets the following requirements:
h is more than or equal to 5 or n H is more than 9;
the thickness of the transparent layer of the flexible holographic screen is d (mum), the longest edge is L (& ltcm & gt), and the following requirements are met between two persons:
1<d/L<10。
further, the thickness of the reflecting layer is 0.1-25 micrometers, the thickness of the transparent layer is 1 mm-10 cm, and the thickness of the transparent layer is greater than that of the reflecting layer.
Further, the reflective film is any one of aluminum foil, iron foil, tin foil, zinc foil, copper foil, chromium foil, nickel foil and titanium foil.
Further, the transparent layer is a cured layer of transparent glue and/or a transmissive film layer adhered by transparent glue.
Further, the transparent glue is any one of transparent epoxy resin AB glue, UV glue, shadowless glue, transparent glass glue, transparent wood glue and transparent all-purpose glue.
Further, the transmission film is any one of transparent plastic, PMMA film, lPMMA film, PS film, PC film, styrene acrylonitrile film, MS film, PET film, PETG film, ABS film, PP film, PA film, SAN film, MS film, MBS film, PES film, CR-39 film, TPX film, HEMA film, F4 film, F3 film, EFP film, PVF film, PVDF film, EP film, PF film, UP film, cellulose acetate film, cellulose nitrate film, EVA film, PE film, PVC film, amorphous cycloolefin film, and modified bisphenol a epoxy film.
Further, the single-layer flexible base element film is bonded with a flexible transparent protective film through transparent glue.
Further, the flexible transparent protective film is any one of a transparent PMMA film, a PS film, a PC film, a styrene acrylonitrile film, an MS film, a PET film, a PETG film, an ABS film, a PP film, a PA film, a SAN film, an MS film, a MBS film, a PES film, a CR-39 film, a TPX film, a HEMA film, an F4 film, an F3 film, an EFP film, a PVF film, a PVDF film, an EP film, a PF film, an UP film, a cellulose acetate film, a cellulose nitrate film, an EVA film, a PE film, a PVC film, an amorphous cycloolefin film and a modified bisphenol A epoxy resin film.
The invention also provides an oversized hard holographic screen based on the oversized application scene, which comprises an oversized hard transparent flat plate and the oversized flexible holographic screen adhered to the oversized hard transparent flat plate.
The ultra-large hard holographic screen based on the ultra-large application scene comprises a plurality of hard holographic projection units which are arranged in a matrix and bonded together, wherein the hard holographic projection units are formed by bonding two layers of hard base element films through transparent glue, or are formed by bonding one layer of flexible base element film and one layer of hard base element film through transparent glue, and the hard base element film is a flexible base element film bonded with one layer of hard transparent protective film.
Further, the transparent protective film is made of any one of glass, acrylic and plastic.
Compared with the prior art, the invention has the advantages that:
1. compared with the existing high-precision optical glass processing, the ultra-large flexible holographic screen and the ultra-large hard holographic screen both comprise the flexible base film, so that the flexible base film is low in material cost, and is not easy to break when being processed, the problems of residual stress and the like generated in the glass processing process are avoided, the yield is greatly improved, and the large-scale popularization is suitable;
2. the ultra-large flexible holographic screen is flexible, so that the screen can be made into a scroll screen, a curved screen and the like in specific application, heavy support and protection are not required to be added, the flexibility is high, the screen is convenient to store when not used, and the occupied space is small.
3. On the basis of the flexible base element film, the hard transparent protective film is additionally arranged to be applied to the ultra-large hard holographic screen, so that the ultra-large hard holographic screen is not easy to break, heavy protection can be reduced during application, and the maintenance is more convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of an oversized flexible holographic screen or an oversized rigid holographic screen according to the invention,
figure 2 is an ultra-large rigid holographic screen with an ultra-large flexible holographic screen attached to an ultra-large rigid transparent plate 5,
figure 3 is a perspective view of the flexible holographic projection unit 1,
figure 4 is a front view and a top view of figure 3,
figure 5 is a front view of the flexible base film 2 with the transparent layer 22 being a cured layer of transparent glue,
figure 6 is a front view of another flexible cellular film 2 in which the transparent layer 22 is formed of a transparent glue and a transmissive film,
figure 7 is an enlarged view of a portion of i in figure 6,
figure 8 is a block diagram of a hard holographic projection unit 6 formed by a layer of flexible substrate film 2 and a layer of hard substrate film 7,
FIG. 9 is a structural view of a hard hologram projection unit 6 constituted by two hard element films 7 or one flexible element film 2 with a transparent protective film 4 and one hard element film 7,
figure 10 is an imaging schematic of the flexible holographic projection unit 2 or the rigid holographic projection unit 6,
figure 11 is a side view of figure 7,
FIG. 12 is a schematic diagram of the partial internal ray reflection of FIG. 11 II,
figure 13 is a diagram of the imaging effect of an oversized flexible holographic screen or an oversized rigid holographic screen,
FIG. 14 is a simulation effect diagram of the imaging light path of the ultra-large flexible holographic screen or the ultra-large hard holographic screen according to the present invention,
the reference numbers are as follows:
the flexible holographic projection unit comprises a flexible holographic projection unit 1, a flexible base element film 2, a reflecting layer 21, a transparent layer 22, grids 3, a flexible transparent protective film 4, a transparent flat plate 5, a hard holographic projection unit 6, a hard base element film 7 and a hard transparent protective film 8.
Detailed Description
The following detailed description of the present invention is provided for the purpose of better understanding of technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.
The ultra-large flexible holographic screen based on the ultra-large application scene comprises a plurality of flexible holographic projection units 1 which are arranged in a matrix and bonded together, wherein the ultra-large flexible holographic screen and the flexible holographic projection units 1 are both flexible bendable structures, the flexible holographic projection units 1 are formed by bonding two layers of flexible base element films 2 through transparent glue, and the single-layer flexible base element film 2 consists of a plurality of reflecting layers 21 and transparent layers 22 which are arranged in parallel at intervals;
the reflecting layer 21 is a reflecting film having a function of reflecting light, and is used for reflecting light, it should be noted that if the reflecting film is too thick, too much light is shielded, the thinner the reflecting film is, but in consideration of the difficulty and cost of the process preparation, the thickness of the reflecting film is selected from 0.1-25 μm aluminum foil, iron foil, tin foil, zinc foil, copper foil, chromium foil, nickel foil, titanium foil or other reflecting films capable of reflecting light;
the transparent layer 22 is a cured layer of transparent glue and/or a transmission film layer bonded by the transparent glue, is used for transmitting light, and meets the requirement that the thickness of the transparent layer 22 is always greater than the thickness of the reflective layer 21, and the thickness of the transparent layer is preferably 1 mm-10 cm;
the transparent glue is any one of transparent epoxy resin AB glue, UV glue, shadowless glue, transparent glass glue, transparent wood glue and transparent all-purpose glue;
the transmission film is any one of transparent plastic, PMMA film, lPMMA film, PS film, PC film, styrene acrylonitrile film, MS film, PET film, PETG film, ABS film, PP film, PA film, SAN film, MS film, MBS film, PES film, CR-39 film, TPX film, HEMA film, F4 film, F3 film, EFP film, PVF film, PVDF film, EP film, PF film, UP film, cellulose acetate film, cellulose nitrate film, EVA film, PE film, PVC film, amorphous cycloolefin film and modified bisphenol A epoxy resin film;
the reflective layer 21 and the transparent layer 22 can be bonded together by transparent glue, or the reflective film can be directly plated on the transparent layer 22;
the reflecting layer 21 and the transparent layer 22 between the two layers of flexible substrate films 2 forming the flexible holographic projection unit 1 are staggered at an included angle theta to form a grid 3, theta is more than or equal to 87 degrees and less than or equal to 93 degrees, preferably 90 degrees, and the flexible substrate films 2 forming the flexible holographic projection unit 1 can be adhered to at least one layer of flexible transparent protective film 4 through transparent glue;
the flexible transparent protective film 4 is any one of a transparent PMMA film, an lPMMA film, a PS film, a PC film, a styrene acrylonitrile film, an MS film, a PET film, a PETG film, an ABS film, a PP film, a PA film, an SAN film, an MS film, an MBS film, a PES film, a CR-39 film, a TPX film, a HEMA film, an F4 film, an F3 film, an EFP film, a PVF film, a PVDF film, an EP film, a PF film, an UP film, a cellulose acetate film, a cellulose nitrate film, an EVA film, a PE film, a PVC film, an amorphous cycloolefin film and a modified bisphenol A epoxy resin film;
the transparent layer 22 is a cured layer of transparent glue and/or a transmission film layer bonded by transparent glue, and based on the materials of the transparent glue and the transmission film, the cured transparent layer 22 has better flexibility, so that the flexible element film 1 and the flexible holographic screen both have better flexibility;
the flexible holographic projection unit 1 can be used independently as a flexible 3D display holographic film, the horizontal clamping droop length of the flexible holographic projection unit is H (cm), the folding times of the flexible holographic projection unit is n, and the requirements are as follows: h is more than or equal to 5 or n H is more than 9, and in practical application, n is more than or equal to 2 and H is more than 9 in order to ensure the reliability as much as possible;
it should be noted that n is the number of times of foldingThe area is 100cm when in test2The method comprises the steps of folding a holographic film into a rectangle along a square middle line position (or within a range of 1cm near the middle line position), clamping the folded holographic film in the middle by two flat plates, applying a force of 10-20N, pressurizing for 3-5 s, opening the holographic film (completing a folding test at the moment), checking whether the holographic film is cut into two parts along a crease line, repeating the test until the holographic film is cut into two parts if the holographic film is not cut, and stopping the test, wherein the total folding times in the test process are recorded as N;
wherein H is the horizontal clamping sagging length, the test method comprises the following steps: taking a narrow strip holographic film with the width of 5cm +/-0.5 cm and the length of about 25cm, enabling one end of the narrow strip holographic film to be tightly attached to a horizontal reference table top, ensuring that the length of the narrow strip extending out of the table top is 20cm +/-1 cm, standing, and measuring the vertical height difference between the end point of the narrow strip extending out of the table top and the horizontal reference table top after the narrow strip is stabilized to be recorded as a horizontal droop length H;
the test is an accelerated test means, the reliability of the sample in the long-term use process can be rapidly judged, the holographic film needs to bear operations such as winding, storage, opening and the like for many times when being applied, the storage and the expansion actions are calculated according to the designed 5-year service life, the whole life cycle needs about 10000 times, and in order to accelerate the evaluation of the service life of the holographic film, the double-folding test and the horizontal clamping sagging length test are adopted.
When n H >9, the larger n indicates that the limit bending curvature radius of the holographic film is smaller, the stronger the anti-breaking capacity is, meanwhile, the larger L indicates that the flexibility of the holographic film is better, the holographic film structure is not easy to damage due to winding, experiments show that the opening and closing tests are basically equivalent to 10000 times when n H is 9, the requirement on the minimum design life is met, and if the n H is too small, the quality problem is easy to occur in the service cycle of a product, and the customer experience is reduced.
In practical application, a transparent adhesive tape and a transparent film which are relatively hard after being cured can be used, so that the prepared holographic film can be broken when being folded in half, but the structure can not be damaged when being wound, and the method is also suitable for winding screens. For the material, as long as the prepared flexible 3D display holographic film can be wound into a cylinder with the diameter less than 5cm, the whole flexible 3D display holographic film is relatively flexible, and the fracture loss in the processing process is small. When H is more than 5cm, the holographic film can be relatively easily rolled into a cylindrical shape with a diameter of less than 5 cm.
The invention also provides an oversized hard holographic screen based on the oversized application scene, which comprises an oversized hard transparent flat plate 5 and the oversized flexible holographic screen adhered to the oversized hard transparent flat plate 5, and the oversized flexible holographic screen can be adhered to the oversized hard transparent flat plate 5 to form the oversized hard holographic screen based on the influence of wind in some open oversized application scenes, so that the stability of the oversized hard holographic screen is improved.
The invention also provides another ultra-large hard holographic screen, which comprises a plurality of hard holographic projection units 6 which are arranged in a matrix and are bonded together, wherein each hard holographic projection unit 6 is formed by bonding two layers of hard base element films 7 through transparent glue, or the flexible base element film 2 and one layer of hard base element film 7 through transparent glue, each hard base element film 7 is formed by bonding one layer of hard transparent protective film 8 on the flexible base element film 2, and each hard transparent protective film 8 is any one of glass, acrylic and plastic made of transparent materials, preferably acrylic;
when the transparent protective film is made of a material that can be used for the flexible transparent protective film 4, in addition to a material such as glass and acrylic, which are inherently hard, the transparent protective film itself is also a hard transparent protective film when the thickness of the transparent protective film is large, and the hard hologram projection unit 6 is also applicable.
The thickness of the transparent layer 22 of the flexible holographic screen or the hard holographic screen is d (mum), and the longest side is L (cm), and the requirements are as follows:
1<d/L<10；
it should be noted that, in the actual imaging, if the resolution of the holographic screen is higher, the more information that can be recognized by human eyes is, the clearer and more comfortable the viewing is, but human eyes have a limit angle resolution, which is about 1' (1/60 of 1 °), and if the resolution of the holographic screen is far higher than the resolution limit of human eyes, the microstructure of the holographic screen needs to be made very fine, the corresponding manufacturing cost is higher, and meanwhile, too fine structure may bring the problem of diffraction of light, thereby reducing the imaging quality;
if the resolution of the holographic screen is too poor and far lower than that of human eyes, the image definition is very poor, and the viewing experience is greatly compromised, so that the holographic screen microstructure design needs to be matched with the characteristics of the human eyes;
when a person watches a far object usually, the detail resolution capability of the person is poor, the person cannot recognize the detail point due to too small detail point, and otherwise, the person can recognize the detail information well when watching a near object;
generally, the larger the holographic screen is, the farther away the holographic screen can be from the user for viewing, if the holographic screen is smaller, the closer the holographic screen must be for viewing is more comfortable, therefore, for a large holographic screen, the larger the holographic screen can be placed at a farther place for viewing, at the moment, the microstructure of the holographic screen can be correspondingly made relatively rough, the thickness of the transparent layer 22 on the holographic screen is d (mum), the longest side of the projection screen is L (#), when L exceeds 0.6m, and d is smaller, the processing difficulty is sharply increased in a form of power function along with the increase of the screen length, at the moment, in order to balance the processing difficulty and the display effect, the resolution characteristics of human eyes, the manufacturing process difficulty, the diffraction and other imaging effect factors are considered, d should be correspondingly increased, for an oversized holographic screen, the L length at least reaches more than 100m, then d should also be increased to about 10cm according to reality, in summary, d and L should satisfy: 1< d/L <10, which allows for a simultaneous compromise in all aspects, specific dimensions are as follows:
| thickness of transparent layer/. mu.m | Projection screen longest side/cm | Formula (II) | |
| | L | 1<d/L<10 | |
| 100 | 34.4 | 2.91 | |
| 100 | 100 | 1 | |
| 300 | 100 | 3 | |
| 1000 | 100 | 10 | |
| 100000 | 10000 | 10 |
Imaging principle: the projection light is reflected by the reflecting layer 21 in the holographic screen, one or more reflections exist, a 3D image is formed at the conjugate position relative to the holographic screen, and the final imaging effect of the imaging principle is consistent with that of a flat lens made of a negative refractive index material.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions may be made without departing from the spirit of the invention, and all shall be considered as belonging to the scope of the invention.
Claims (11)
1. Super large flexible holographic screen based on super large application scene, its characterized in that: the flexible holographic projection screen comprises a plurality of flexible holographic projection units (1) which are arranged in a matrix and bonded together, wherein the ultra-large flexible holographic screen and the flexible holographic projection units (1) are both flexible bendable structures, the flexible holographic projection units (1) are formed by bonding two layers of flexible base film (2) through transparent glue, and the single-layer flexible base film (2) consists of a plurality of reflecting layers (21) and transparent layers (22) which are arranged in parallel at intervals;
the reflecting layer (21) is a reflecting film with a light ray reflecting function and is used for reflecting light rays;
the transparent layer (22) is used for transmitting light;
the reflecting layer (21) and the transparent layer (22) between the two layers of flexible substrate films (2) forming the flexible holographic projection unit (1) are staggered at an included angle theta to form a grid (3), and the theta is more than or equal to 87 degrees and less than or equal to 93 degrees;
the horizontal clamping drooping length of the flexible holographic projection unit (1) is H (cm), the number of foldable times is n, and the flexible holographic projection unit meets the following requirements: h is more than or equal to 5 or n H is more than 9;
the thickness of the transparent layer (22) of the flexible holographic screen is d (mum), the longest side is L (& cm), and the thickness of the transparent layer and the longest side satisfy the following conditions:
1<d/L<10。
2. the oversized flexible holographic screen based on the oversized application scene, according to claim 1, is characterized in that: the thickness of the reflecting layer (21) is 0.1-25 mu m, the thickness of the transparent layer (22) is 1 mm-10 cm, and the thickness of the transparent layer (22) is greater than that of the reflecting layer (21).
3. The holographic projection screen based on very large application scenes of claim 1, wherein: the reflecting film is any one of aluminum foil, iron foil, tin foil, zinc foil, copper foil, chromium foil, nickel foil and titanium foil.
4. The oversized flexible holographic screen based on the oversized application scene, according to claim 1, is characterized in that: the transparent layer (22) is a cured layer of transparent glue and/or a transmissive film layer bonded by transparent glue.
5. The ultra-large flexible holographic screen based on the ultra-large application scene of claim 1 or 4, wherein: the transparent glue is any one of transparent epoxy resin AB glue, UV glue, shadowless glue, transparent glass glue, transparent wood glue and transparent all-purpose glue.
6. The very large flexible holographic screen based on a very large application scenario, of claim 4, wherein: the transmission film is any one of transparent plastic, PMMA film, lPMMA film, PS film, PC film, styrene acrylonitrile film, MS film, PET film, PETG film, ABS film, PP film, PA film, SAN film, MS film, MBS film, PES film, CR-39 film, TPX film, HEMA film, F4 film, F3 film, EFP film, PVF film, PVDF film, EP film, PF film, UP film, cellulose acetate film, cellulose nitrate film, EVA film, PE film, PVC film, amorphous cycloolefin film and modified bisphenol A epoxy resin film.
7. The oversized flexible holographic screen based on the oversized application scene, according to claim 1, is characterized in that: the single-layer flexible base element film (2) is bonded with a flexible transparent protective film (4) through transparent glue.
8. The very large flexible holographic screen based on a very large application scenario of claim 7, wherein: the flexible transparent protective film (4) is any one of a PMMA film, an lPMMA film, a PS film, a PC film, a styrene acrylonitrile film, an MS film, a PET film, a PETG film, an ABS film, a PP film, a PA film, an SAN film, an MS film, an MBS film, a PES film, a CR-39 film, a TPX film, a HEMA film, an F4 film, an F3 film, an EFP film, a PVF film, a PVDF film, an EP film, a PF film, an UP film, a cellulose acetate film, a cellulose nitrate film, an EVA film, a PE film, a PVC film, an amorphous cycloolefin film and a modified bisphenol A epoxy resin film which are made of transparent materials.
9. Super large stereoplasm holographic screen based on super large application scene, its characterized in that: comprising an oversized transparent plate (5) and an oversized flexible holographic screen according to claim 1 attached to the rigid transparent plate (5).
10. Super large stereoplasm holographic screen based on super large application scene, its characterized in that: the device comprises a plurality of hard holographic projection units (6) which are arranged in a matrix and bonded together, wherein the hard holographic projection units (6) are formed by bonding two layers of hard base element films (7) through transparent glue, or are formed by bonding one layer of flexible base element film (2) according to claim 1 with one layer of hard base element film (7) through transparent glue, and the hard base element film (7) is the flexible base element film (2) bonded with one layer of hard transparent protective film (8).
11. The holographic projection screen based on very large application scenes of claim 8, wherein: the hard transparent protective film (8) is made of any one of glass, acrylic and plastic.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911202605.8A CN110888296A (en) | 2019-11-29 | 2019-11-29 | Super-large flexible holographic screen and hard holographic screen based on super-large application scene |
| PCT/CN2020/131742 WO2021104367A1 (en) | 2019-11-29 | 2020-11-26 | Flexible holographic primitive film, preparation method therefor and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911202605.8A CN110888296A (en) | 2019-11-29 | 2019-11-29 | Super-large flexible holographic screen and hard holographic screen based on super-large application scene |
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| CN110888296A true CN110888296A (en) | 2020-03-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111338015A (en) * | 2020-04-17 | 2020-06-26 | 荆门市探梦科技有限公司 | Two-dimensional feature-based reflective geometric holographic film and preparation method and application thereof |
| WO2021104367A1 (en) * | 2019-11-29 | 2021-06-03 | 荆门市探梦科技有限公司 | Flexible holographic primitive film, preparation method therefor and application thereof |
-
2019
- 2019-11-29 CN CN201911202605.8A patent/CN110888296A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021104367A1 (en) * | 2019-11-29 | 2021-06-03 | 荆门市探梦科技有限公司 | Flexible holographic primitive film, preparation method therefor and application thereof |
| CN111338015A (en) * | 2020-04-17 | 2020-06-26 | 荆门市探梦科技有限公司 | Two-dimensional feature-based reflective geometric holographic film and preparation method and application thereof |
| CN111338015B (en) * | 2020-04-17 | 2023-05-02 | 荆门市探梦科技有限公司 | Reflective geometric holographic film based on two-dimensional characteristics and preparation method and application thereof |
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