CN110780531A - Nano-photonic crystal photoluminescence transparent holographic high-definition imaging film - Google Patents
Nano-photonic crystal photoluminescence transparent holographic high-definition imaging film Download PDFInfo
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- CN110780531A CN110780531A CN201911272167.2A CN201911272167A CN110780531A CN 110780531 A CN110780531 A CN 110780531A CN 201911272167 A CN201911272167 A CN 201911272167A CN 110780531 A CN110780531 A CN 110780531A
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- 239000004038 photonic crystal Substances 0.000 title claims abstract description 47
- 238000003384 imaging method Methods 0.000 title claims abstract description 29
- 238000005424 photoluminescence Methods 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 40
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 31
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 29
- 239000010410 layer Substances 0.000 claims description 80
- 239000013078 crystal Substances 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 239000012790 adhesive layer Substances 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 4
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- 229920000178 Acrylic resin Polymers 0.000 claims description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920005749 polyurethane resin Polymers 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 239000003086 colorant Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- -1 rare earth ions Chemical class 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Holo Graphy (AREA)
Abstract
The invention discloses a nano-photonic crystal photoluminescence transparent holographic high-definition imaging film, which comprises a base layer, wherein a bonding layer and an imaging layer are sequentially arranged on the base layer, the imaging layer comprises a nano-photonic crystal layer and a rare earth luminescent material layer, and the nano-photonic crystal layer is arranged on the bonding layer and is used for displaying a projection image; the invention relates to a fully transparent holographic high-definition imaging film, which comprises a nano photonic crystal layer and a rare earth luminescent material layer, wherein the rare earth luminescent material layer is arranged on the nano photonic crystal layer and used for improving the reflection gain of a projected image and enhancing the brightness, contrast and color saturation of the projected image.
Description
Technical Field
The invention relates to the technical field of optical projection, in particular to a nano photonic crystal photoluminescence transparent holographic high-definition imaging film.
Background
Nowadays, projection technology is widely applied in life and work, especially in important occasions such as large conference rooms, command and control centers, training and education structures, exhibition halls, airports, show windows and the like.
The projection technology is that a projection medium presents a projection image, however, a difficulty in the development of the existing projection technology is how to improve the gain of the projection image, and the technical means adopted for solving the problem are not the same, and the effect is not ideal.
In practical application, the projection medium is semitransparent or opaque, theoretically, light cannot be diffracted or diffusely reflected when passing through the transparent medium, so that light imaging cannot be generated, the projection image displayed on the transparent medium has a very strong 3D illusion effect, and how to solve the problem that the projection imaging of the transparent medium needs to be overcome by technicians in the field.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a nano-photonic crystal photoluminescence transparent holographic high-definition imaging film, the technical scheme comprises a nano-photonic crystal layer and a rare earth luminescent material layer, and the two film layers can enable a transparent projection medium to present a projection image with high transparency, high brightness, high contrast and high color saturation under the condition of high transparency. Because of the photoluminescence of the rare earth luminescent material layer, can be self-luminous when being excited by external light, compared with the traditional solution of projection image gain, the setting of the rare earth luminescent material layer is a creative technical breakthrough, and the gain of the projection image is greatly improved, and the technical scheme is as follows:
a transparent holographic high-definition imaging film of nanometer photonic crystal photoluminescence comprises a base layer, wherein a bonding layer and an imaging layer are sequentially arranged on the base layer, the imaging layer comprises a nanometer photonic crystal layer and a rare earth luminescent material layer, and the nanometer photonic crystal layer is arranged on the bonding layer and used for displaying a projection image; the rare earth luminescent material layer is arranged on the nano photonic crystal layer and used for improving the reflection gain of the projection image and enhancing the brightness, the contrast and the color saturation of the projection image.
Furthermore, the rare earth luminescent material layer is made of a non-afterglow material, emits light instantly when irradiated by a light source, and stops emitting light immediately after the light source is removed.
Further, the nanophotonic crystal layer comprises nanophotonic crystals, and the diameter of the nanophotonic crystals is preferably 5nm to 15 nm.
The adhesive layer is a transparent adhesive layer formed by mixing one or more of acrylic resin, polyurethane resin, vinyl chloride resin and acrylonitrile resin.
Furthermore, the base layer is a transparent base layer and is composed of one or more of BOPET, PVC, OPP, PP, PE and PU.
The invention relates to a nano-photonic crystal photoluminescence transparent holographic high-definition imaging film, which is a fully transparent holographic high-definition imaging film.
Drawings
FIG. 1 is a structural diagram of a nano-photonic crystal photoluminescence transparent holographic high definition imaging film of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
For the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; certain well-known structures in the drawings and omissions of their description may be apparent to those skilled in the art. The same or similar reference numerals correspond to the same or similar components.
The existing projection technology utilizes the light reflection principle and the diffraction principle to image, and the projection medium can not emit light, which causes a problem that the projection image displayed by the projection medium has insufficient gain, and the gain is expressed on the defects of brightness, contrast, color saturation and the like. Especially, when the ambient light brightness is relatively high, the influence on the projected image is very large, so that the projected display can only show enough brightness and definition in a relatively dark environment. On the other hand, the existing projection media are all non-transparent or semi-transparent, theoretically, light cannot be diffracted or diffusely reflected when passing through the transparent media, so that light imaging cannot be generated, and the transparent media can have a very strong 3D illusion effect when presenting a projection image.
The technical scheme provides a nano-photonic crystal photoluminescence transparent holographic high-definition imaging film, which solves the two problems, and the specific embodiment of the technical scheme is as follows:
in this embodiment, as shown in fig. 1, a nano-photonic crystal photoluminescent transparent holographic high definition imaging film comprises a base layer 1, wherein a bonding layer 2 and an imaging layer 3 are sequentially disposed on the base layer 1, the imaging layer 3 comprises a nano-photonic crystal layer 31 and a rare earth luminescent material layer 32, and the nano-photonic crystal layer 31 is disposed on the bonding layer 2 and is used for displaying a projection image; the rare earth luminescent material layer 32 is disposed on the nano photonic crystal layer 31, and is used to improve the reflection gain of the projected image and enhance the brightness, contrast and color saturation of the projected image.
It should be noted that, the technical solution is a fully transparent high definition developing film, so the base layer 1 is a transparent substrate, in this embodiment, the base layer 1 may be one or more of BOPET, PVC, OPP, PP, PE, and PU, but is not limited to these listed substrates, and other materials that can meet the requirements may also be used, such as glass, acrylic, and the like. Therefore, the thickness of the base layer 1 is preferably in the range of 0.05 to 0.2 mm. The adhesive layer 2 is also made of transparent material, and may be one or a mixture of more of acrylic resin, polyurethane resin, vinyl chloride resin and acrylonitrile resin, but is not limited to these listed materials, and any adhesive material that is commonly used in the prior art and can be satisfied is acceptable.
In this embodiment, the nano photonic crystal layer 31 includes a nano photonic crystal, the nano photonic crystal is a polygonal crystal structure formed by alternately arranging materials with different high and low refractive indexes, the structure of the nano photonic crystal can generate an optical band gap, and light passes through the optical band gap of the nano photonic crystal to form diffraction and diffuse reflection of light, so that the nano photonic crystal layer has an imaging effect.
It is noted that coatings with nanophotonic crystals greater than 50 nm in diameter are opaque, while coatings with nanophotonic crystals between 10nm and 50 nm in diameter are considered to be transparent, but are translucent to the naked human eye, i.e., hazy, and are considered to be fully transparent to the human eye only if the nanophotonic crystals are less than 15nm in diameter. Therefore, in this embodiment, the diameter of the nanophotonic crystal can be selected from 5nm to 15 nm.
However, although the coating with the diameter of the nano photonic crystal less than 15nm is recognized as completely transparent by human eyes, the coating also has the characteristics of diffraction and diffuse reflection of the nano photonic crystal, so that the coating with the diameter of the nano photonic crystal less than 15nm has excellent imaging effect. Experiments show that when the nano photonic crystals with the diameter of 7nm in the nano photonic crystal coating account for about 80% of the total number, the projection image effect felt by human eyes is the best.
In this embodiment, the rare earth luminescent material layer 32 is a non-afterglow photoluminescent layer, the existing projection film layer does not emit light, and the photoluminescent layer utilizes the principle of rare earth photoluminescence, so that the luminescent layer self-emits light when excited by light.
It should be noted that the rare earth ions have luminescence property, and the rare earth ions can absorb or emit light with various wavelengths from ultraviolet to infrared, so that a variety of luminescent materials can be formed (this knowledge needs to be documented, and no further description is provided here). The rare earth luminescent material layer 32 in this embodiment is a non-afterglow photoluminescent material, the rare earth luminescent material layer 32 emits light instantly when irradiated by a light source, and the rare earth luminescent material layer 32 stops emitting light immediately after the light source is removed, which is different from a common noctilucent material in the market, the noctilucent material is a long-afterglow photoluminescent material, that is, the light source is completely irradiated, and the light source can self-emit light for a long time after being removed.
Further, the optical band gap structure of the nanophotonic crystal in the nanophotonic crystal layer 31 has a wavelength selection function to selectively allow light of a certain wavelength band to pass therethrough and prevent light of other wavelengths from passing therethrough, and when the thickness of the nanophotonic crystal layer 31 and the rare earth luminescent material layer 32 reaches a specific relationship, light is partially reflected every time it passes through an interface between the two layers, and a large number of reflected light beams interfere with each other, so that light of a certain frequency range is completely reflected back, thereby generating a specific visual color.
By utilizing the principle, the nano photonic crystal layer 31 and the rare earth luminescent material layer 32 on the nano photonic crystal photoluminescence transparent holographic high-definition imaging film are excited by laser scanning, light irradiation, laser projection or a projector light shadow, so that the nano photonic crystal layer and the rare earth luminescent material layer emit light rays, color blocks and images with different colors, and the projection has a visual impact effect.
And the thicknesses of the nano-photonic crystal layer 31 and the rare earth luminescent material layer 32 can be artificially adjusted according to the principle to selectively present the required colors. The thicknesses of the nano-photonic crystal layer 31 and the rare earth luminescent material layer 32 are adjusted within the range of 1-25um to achieve the best color, and the specific thicknesses are adjusted according to requirements, which is not described in detail in this embodiment. However, it should be noted that the thickness of the nanophotonic crystal layer 31 and the rare earth luminescent material layer 32 in this embodiment is not limited to 1-25 um.
In this embodiment, the nano photonic crystal layer 31 and the rare earth luminescent material layer 32 are preferably precisely coated on the base layer 1 in sequence by precision gradient flow type precision coating, and other coating processes capable of meeting the requirements can also be applied to this embodiment.
The working process of the embodiment is as follows:
when laser scanning or light irradiation or laser projection or the light shadow of a projector irradiates the nano photonic crystal photoluminescence transparent holographic high-definition imaging film, firstly, the rare earth luminescent material layer 32 can perform photoluminescence, the spontaneous light of the rare earth luminescent material layer 32 can irradiate the nano photonic crystal layer 31, and the nano photonic crystal layer 31 can reflect or diffract the spontaneous light of the rare earth luminescent material layer 32 besides reflecting or diffracting the projection image, so that the brightness and contrast of the projection image are improved, and the projection gain of the embodiment is improved. The two-layer structure of the nano-photonic crystal layer 31 and the rare earth luminescent material layer 32 can selectively present specific colors, so that a colorful 3D illusion image display effect is realized.
It should be noted that the technical solution can be applied to not only laser scanning or lamp light irradiation or laser projection or light and shadow irradiation of a projector, but also other projection devices or illumination devices, which are not listed here.
In more excellent technical scheme, this embodiment not only has basic unit + tie coat and development layer (including nano-photonic crystal layer and tombarthite luminescent material layer) structure, can also add other retes as required, for example can increase transparent PET at the basic unit back and leave type rete, this can be more convenient paste this nano-photonic crystal photoluminescence transparent holographic high definition development membrane and fix on transparent backup pad etc. in the application, so other increase retes still are in the protection scope of this patent.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (5)
1. The utility model provides a transparent holographic high definition video film of nanometer photonic crystal photoluminescence, contains the basic unit, the basic unit on set gradually tie coat and video layer, its characterized in that, the video layer contain:
the nano photonic crystal layer is arranged on the bonding layer and is used for displaying a projection image;
and the rare earth luminescent material layer is arranged on the nano photonic crystal layer and used for improving the brightness, the contrast and the color saturation of the projection image.
2. The nanophotonic crystal photoluminescent transparent holographic high definition imaging film according to claim 1, wherein the rare earth luminescent material layer is a non-afterglow material, and emits light instantly when irradiated by a light source, and stops emitting light immediately when the light source is removed.
3. The nanophotonic crystal photoluminescent transparent holographic high definition imaging film of claim 1, wherein the nanophotonic crystal layer comprises nanophotonic crystals, and the nanophotonic crystals have a diameter of 5nm to 15 nm.
4. The nanophotonic crystal photoluminescent transparent holographic high definition imaging film according to claim 1, wherein the adhesive layer is a transparent adhesive layer formed by mixing one or more of acrylic resin, polyurethane resin, vinyl chloride resin, and acrylonitrile resin.
5. The nanophotonic crystal photoluminescent transparent holographic high definition imaging film according to claim 1, wherein the substrate is a transparent substrate and is one or more of BOPET, PVC, OPP, PP, PE, and PU.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911272167.2A CN110780531A (en) | 2019-12-12 | 2019-12-12 | Nano-photonic crystal photoluminescence transparent holographic high-definition imaging film |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111660769A (en) * | 2020-05-29 | 2020-09-15 | 福耀玻璃工业集团股份有限公司 | Projection intelligence window |
| CN113185137A (en) * | 2021-01-25 | 2021-07-30 | 深圳吉美瑞科技有限公司 | Pure inorganic holographic projection glass and preparation method thereof |
| CN113433788A (en) * | 2021-07-09 | 2021-09-24 | 广西中光影光电有限公司 | Front projection transparent holographic projection screen |
| CN114113049A (en) * | 2021-11-30 | 2022-03-01 | 南京信息工程大学 | Preparation method and application of self-luminous photonic crystal electrochemiluminescence sensor |
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| CN114113049A (en) * | 2021-11-30 | 2022-03-01 | 南京信息工程大学 | Preparation method and application of self-luminous photonic crystal electrochemiluminescence sensor |
| CN114113049B (en) * | 2021-11-30 | 2023-05-30 | 南京信息工程大学 | Preparation method and application of self-luminous photonic crystal electrochemiluminescence sensor |
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