CN111752083A - Transparent projection glass screen and preparation method thereof - Google Patents

Transparent projection glass screen and preparation method thereof Download PDF

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Publication number
CN111752083A
CN111752083A CN202010493693.8A CN202010493693A CN111752083A CN 111752083 A CN111752083 A CN 111752083A CN 202010493693 A CN202010493693 A CN 202010493693A CN 111752083 A CN111752083 A CN 111752083A
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China
Prior art keywords
glass
micron
scattering particles
optical cement
liquid optical
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Pending
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CN202010493693.8A
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Chinese (zh)
Inventor
黄云城
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Hunan Diyuan Optical Technology Co.,Ltd.
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Yantai Diyuan Optical Technology Co ltd
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Priority to CN202010493693.8A priority Critical patent/CN111752083A/en
Publication of CN111752083A publication Critical patent/CN111752083A/en
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284—Application of adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/06—Joining glass to glass by processes other than fusing
    • C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J123/04—Homopolymers or copolymers of ethene
    • C09J123/08—Copolymers of ethene
    • C09J123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C09J123/0853—Vinylacetate
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/51—Methods thereof
    • B01F23/511—Methods thereof characterised by the composition of the liquids or solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2203/00—Other substrates
    • B05D2203/30—Other inorganic substrates, e.g. ceramics, silicon
    • B05D2203/35—Glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2244—Oxides; Hydroxides of metals of zirconium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045—Sulfates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/003—Additives being defined by their diameter

Abstract

The invention relates to a transparent projection glass screen and a preparation method thereof, wherein the transparent projection glass screen comprises glass and a plurality of micron-sized scattering particles, and the micron-sized scattering particles are positioned between two pieces of glass. According to the invention, the liquid optical cement doped with micron-sized scattering particles is used as a scattering functional layer, so that the ambient light transmittance is improved; the micron-sized scattering particles are uniformly distributed in the liquid optical cement three-dimensional space, and the frosted surfaces on the inner surfaces of the glass on two sides improve the scattering effect of the projection light, so that the projection light can clearly display a projection image on a glass screen, and the visual effect of aerial three-dimensional imaging can be obtained.

Description

Transparent projection glass screen and preparation method thereof
Technical Field
The invention relates to the field of display screens, in particular to a transparent projection glass screen and a preparation method thereof.
Background
In application scenes such as show windows, curtain walls, product exhibition, scene construction and the like, a transparent projection glass screen is often used, people can see objects behind through the glass screen, meanwhile, when light of a projector is projected on the projection screen, the projection glass screen displays a projection picture, and due to the fact that the glass is transparent, an observer can see the effect of aerial stereoscopic imaging after being superposed with projection light, the effect is similar to holographic images, and a deep impression is left on the observer.
The light transmittance of the glass used by the projection glass screen is 85% -90%, if ultra-white glass or optical glass is used, the light transmittance reaches more than 90%, in order to enable projection light to be imaged on the light-transmitting glass, a scattering functional layer needs to be added in the glass or in a glass interlayer structure, the commonly used scattering functional layer is composed of scattering particles, generally micron-sized scattering particles, and the scattering particles can scatter projection light and emit light to the periphery to form an image on the glass.
However, when the glass is used as a projection screen, more scattering particles are needed to diffuse projection light, so that a projection picture can be clearer; however, when the scattering particles are added to the glass, the light transmittance of the glass is reduced, so that an observer cannot see objects behind the glass clearly, and the light transmittance of the glass is lost, so that how to balance the light transmittance and the projection definition of the projection glass screen is important.
At present, there is a transparent projection glass screen on the market, as shown in fig. 2, the method is to spray a layer of scattering particles on the upper surface of one piece of high-transparency glass, and to stick an EVA film on the lower surface of the other piece of high-transparency glass, and then press and bond the two pieces of glass at high temperature to form the glass screen. The scattering particles are dense, 10-20 particles are in a unit square millimeter, and the EVA adhesive film is added, so that the light transmittance of the glass screen is very low, the surface is foggy, although a relatively clear projection picture can be seen, the glass has poor light transmittance and poor visual field, and the glass looks like a common projection screen.
Therefore, how to improve the light transmittance of the projection glass screen and enable the projection imaging to have the visual effect of 'aerial stereoscopic imaging' on the glass screen is worth solving.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a transparent projection glass screen and a preparation method thereof.
The technical scheme of the invention is as follows:
on the one hand, the transparent projection glass screen comprises glass and a plurality of micron-sized scattering particles, wherein the micron-sized scattering particles are located between the glass.
The invention according to the above scheme is characterized in that the micron-sized scattering particles account for 0.5-1% of the liquid optical cement by weight.
Furthermore, a plurality of micron-sized scattering particles are uniformly distributed in the liquid optical cement.
Furthermore, the micron-sized scattering particles comprise one or a combination of more of titanium dioxide, aluminum oxide, barium sulfate, silicon oxide, silicon nitride, zirconium oxide and calcium carbonate.
The invention according to the scheme is characterized in that the thickness of the liquid optical cement is 30-100 um, and the particle size of the micron-sized scattering particles is 1-100 um.
In another aspect, a method for preparing the above-described transparent projection glass screen, comprising the steps of:
(1) the micron-sized scattering particles are doped into the liquid optical cement and fully stirred, so that the micron-sized scattering particles are uniformly distributed in the liquid optical cement;
(2) taking a piece of ground glass, wherein the ground surface faces upwards, coating a layer of the liquid optical cement which is prepared in the step (1) and is uniformly distributed with micron-sized scattering particles on the ground surface, and taking another piece of ground glass, wherein the ground surface faces downwards and buckling the other piece of ground glass;
(3) putting the film into a vacuum cavity for pressing, wherein the pressing time is not less than 1 hour;
(4) UV curing is carried out.
Further, the stirring speed in the step (1) is not lower than 1200 rpm.
Further, the stirring time in the step (1) is not less than 30 minutes.
Furthermore, the micron-sized scattering particles doped in the step (1) account for 0.5-1% of the liquid optical cement by weight.
The invention according to the scheme has the advantages that:
according to the invention, the liquid optical cement doped with micron-sized scattering particles is used as a scattering functional layer, so that the ambient light transmittance is improved; the micron-sized scattering particles are uniformly distributed in the three-dimensional space of the liquid optical cement, and the frosted surfaces of the inner surfaces of the glass on two sides improve the scattering effect of the projection light, so that the projection light can clearly display a projection image on a glass screen, and the visual effect of aerial three-dimensional imaging is obtained; furthermore, due to the advantages of good bonding strength, small curing shrinkage and yellowing resistance of the liquid optical cement, the projection glass screen has a firm structure and is durable.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the prior art.
In the figure, 1, glass; 11. sanding surface; 2. liquid optical cement; 3. micron-sized scattering particles; 4. an EVA adhesive film.
Detailed Description
For better understanding of the objects, technical solutions and effects of the present invention, the present invention will be further explained with reference to the accompanying drawings and examples. Meanwhile, the following described examples are only for explaining the present invention, and are not intended to limit the present invention.
As shown in fig. 1, a transparent projection glass screen comprises glass 1 and a plurality of micron-sized scattering particles 3, wherein the micron-sized scattering particles 3 are located between two pieces of glass 1, opposite surfaces of the two pieces of glass 1 are frosted surfaces 11, liquid optical cement 2 is arranged between the frosted surfaces 11 of the two pieces of glass 1, and the liquid optical cement 2 comprises the micron-sized scattering particles 3.
In one embodiment, the micron-sized scattering particles 3 account for 0.5 to 1% of the liquid optical cement 2 by weight.
Preferably, the micron-sized scattering particles 3 are uniformly distributed in the liquid optical cement 2, and are uniformly distributed in the three-dimensional space inside the liquid optical cement 2.
In one embodiment, the micron-sized scattering particles comprise one or more of titanium dioxide, aluminum oxide, barium sulfate, silicon oxide, silicon nitride, zirconium oxide, and calcium carbonate.
The liquid optical adhesive is colorless and transparent, has the light transmittance of more than 98 percent, and has better light transmittance compared with the EVA adhesive film 4; the liquid optical adhesive has good bonding strength, can be cured at normal temperature or medium temperature, and has the advantages of small curing shrinkage rate and yellowing resistance, so that the projection glass screen has a firm structure and is durable.
In the traditional glass screen structure, micron-sized scattering particles are distributed on the surface of glass and are positioned on the same plane, the arrangement is dense, the shielding area for light is large, and the scattering influence on ambient light is serious; the micron-sized scattering particles are uniformly distributed in the three-dimensional space of the liquid optical cement, the thicker the glue layer is, the longer the distance between the micron-sized scattering particles is, and most of ambient light can penetrate through the liquid optical cement and enter eyes of an observer. And when the high-brightness projection light passes through the liquid optical cement, the high-brightness projection light is uniformly scattered by the micron-sized scattering particles, and a clear image is formed on the glass screen. It should be noted that the ambient light is weak light, the projection light is strong light, and when the light passes through the micron-sized scattering particles, the ambient light changes little and is not easily perceived by eyes, and the light after the projection light is scattered is enough for human eyes to see images.
The opposite surfaces of the two pieces of glass are both subjected to frosting treatment, so that the surface structures of the two pieces of glass are uneven, when the frosted surfaces are contacted with the glue, the glue can completely fill and level the frosted surfaces, meanwhile, the refractive index of the glass is smaller than that of the liquid optical glue, the influence on the ambient light behind the glass is small, and the scene behind the glass can be seen clearly through the glass.
In summary, when the high-brightness projection light is obliquely incident on the glass screen, a small amount of scattering occurs at the interface between the glass frosted surface and the liquid optical cement, and then the high-brightness projection light is uniformly scattered by the micron-sized scattering particles through the liquid optical cement, so that a clear image is finally formed on the glass screen; the light from the scene behind the glass to the eyeballs of the observer is close to being vertical to the glass screen, namely the incident angle is small, and the light can easily penetrate through the glass screen and enter the eyes of the observer, so that the two light rays can obtain the visual effect of 'aerial imaging' on the glass screen.
The invention provides a method for preparing the transparent projection glass screen, which comprises the following preparation steps:
(1) the micron-sized scattering particles are mixed into the liquid optical cement according to the weight ratio of 0.5-1% and uniformly stirred, the stirring speed is not lower than 1200 r/min, and the stirring time is not lower than 30 min, so that the micron-sized scattering particles are uniformly distributed in the liquid optical cement;
(2) taking a piece of ground glass, wherein the ground surface faces upwards, coating a layer of liquid optical cement prepared in the step (1) on the ground surface, taking another piece of ground glass, and buckling the other piece of ground glass on the ground surface with the ground surface facing downwards;
(3) putting the film into a vacuum cavity for pressing, wherein the pressing time is not less than 1 hour;
(4) carrying out UV curing for 10 seconds; however, the curing energy of the glue adopted by the invention is less than 1000mJ/cm2, and the curing is generally completed within 10 seconds, depending on the condition that the liquid glue is completely cured.
The invention provides a novel projection glass screen structure, which effectively improves the transmittance of glass, reduces the scattering effect on ambient light, and has the effect of aerial three-dimensional imaging by projecting and imaging on the projection glass screen.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (9)

1. The utility model provides a transparent projection glass screen, includes glass and a plurality of micron order scattering particle, a plurality of micron order scattering particle is located two between the glass, its characterized in that, two the opposite face of glass is the frosting, two be equipped with liquid optical cement between the frosting of glass, include a plurality of in the liquid optical cement micron order scattering particle.
2. The transparent projection glass screen of claim 1, wherein the micron-sized scattering particles comprise 0.5% to 1% by weight of the liquid optical cement.
3. The transparent projection glass screen of claim 2, wherein a plurality of the micron-sized scattering particles are uniformly distributed within the liquid optical cement.
4. The transparent projection glass screen of claim 3, wherein the micron-sized scattering particles comprise one or a combination of titanium dioxide, aluminum oxide, barium sulfate, silicon oxide, silicon nitride, zirconium oxide, and calcium carbonate.
5. The transparent projection glass screen of claim 1, wherein the liquid optical cement has a thickness of 30um to 100um and the micron-sized scattering particles have a particle size of 1um to 100 um.
6. A method of producing a transparent projection glass screen according to any of claims 1 to 4, comprising the following production steps:
(1) the micron-sized scattering particles are doped into the liquid optical cement and fully stirred, so that the micron-sized scattering particles are uniformly distributed in the liquid optical cement;
(2) taking a piece of ground glass, wherein the ground surface of the piece of ground glass faces upwards, coating a layer of the liquid optical cement which is prepared in the step (1) and is uniformly distributed with micron-sized scattering particles on the ground surface, and taking another piece of ground glass, wherein the ground surface of the other piece of ground glass faces downwards and is buckled on the other piece of ground glass;
(3) putting the film into a vacuum cavity for pressing, wherein the pressing time is not less than 1 hour;
(4) UV curing is carried out.
7. The method of claim 6, wherein the stirring speed in step (1) is not less than 1200 rpm.
8. The method of claim 6, wherein the stirring time in step (1) is not less than 30 minutes.
9. The method of claim 6, wherein the micron-sized scattering particles incorporated in step (1) comprise 0.5-1% by weight of the liquid optical cement.
CN202010493693.8A 2020-06-03 2020-06-03 Transparent projection glass screen and preparation method thereof Pending CN111752083A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114659073A (en) * 2022-03-28 2022-06-24 浙江彩丞科技有限公司 Sandwich light-emitting glass device and automobile skylight
CN114815488A (en) * 2021-01-19 2022-07-29 北京京东方传感技术有限公司 Projection glass

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114815488A (en) * 2021-01-19 2022-07-29 北京京东方传感技术有限公司 Projection glass
CN114659073A (en) * 2022-03-28 2022-06-24 浙江彩丞科技有限公司 Sandwich light-emitting glass device and automobile skylight

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