CN115729026A - Projection screen, manufacturing method thereof and projection system - Google Patents
Projection screen, manufacturing method thereof and projection system Download PDFInfo
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- CN115729026A CN115729026A CN202211265387.4A CN202211265387A CN115729026A CN 115729026 A CN115729026 A CN 115729026A CN 202211265387 A CN202211265387 A CN 202211265387A CN 115729026 A CN115729026 A CN 115729026A
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-
- G—PHYSICS
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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
- 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
- G03B21/602—Lenticular screens
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
The invention discloses a projection screen, a manufacturing method thereof and a projection system. Adopt the bond line to bond superficial layer and the fresnel structure layer that is formed with the reflection stratum, and set up fresnel structure towards superficial layer one side, can make the bond line directly bond superficial layer and reflection stratum like this, no longer need set up a layer protective layer again to the reflection stratum, simplify process flow, can adopt cheaper industrial material to make, reduction in production cost from this. And the light loss caused by the reflection of the light at the interface of each film layer and the absorption of the light by the film layers can be reduced, and the gain is improved.
Description
Technical Field
The invention relates to the technical field of projection, in particular to a projection screen, a manufacturing method thereof and a projection system.
Background
With the popularization of laser display products, the market of laser televisions as large-screen products replacing liquid crystal and organic EL televisions is rapidly expanding. In order to achieve better brightness and display effect, the projection apparatus is usually used in combination with a projection screen. Compared with projecting an image on a white wall surface, the projection screen has the advantages of higher gain, larger viewing angle, inhibition of external light reflection and excellent contrast.
In the current front projection type projection system, projection light is emitted from a projection device, the projection light is incident on a projection screen, and the reflected light is reflected to the front by the reflection of the projection screen, so that a projection image is observed. The fresnel reflection structure in the projection screen has the effect of reflecting the projected light towards the viewer side.
The fresnel reflection structure is generally implemented by forming a reflection layer on the surface of the fresnel structure. The currently common reflective material is aluminum paste, which is applied to the surface of the fresnel structure by wet coating. However, in this method, since the surface of the applied aluminum paste cannot be ensured to have a reflection angle at the time of design, it is necessary to use the fresnel structure side as the light incident side. In order to overcome the problems caused by the aluminum paste, a metal film can be evaporated on the surface of the Fresnel structure, but in order to prevent the metal film from being scratched or from being stripped, a protective layer needs to be additionally arranged on the surface of the metal film, so that the problems of complex process and high cost are caused.
Disclosure of Invention
In a first aspect of embodiments of the present invention, a projection screen is provided, including:
a surface layer;
the Fresnel structure layer is positioned on one side of the surface layer, and a Fresnel structure is arranged on the surface of the Fresnel structure layer facing to one side of the surface layer;
the reflecting layer is positioned on the surface of one side, facing the surface layer, of the Fresnel structure layer, and the thickness of the reflecting layer is uniform; and
and the bonding layer is positioned between the surface layer and the reflecting layer and used for bonding the surface layer and the surface of one side, provided with the reflecting layer, of the Fresnel structure layer.
In some embodiments of the present invention, the reflective layer is a metal film.
In some embodiments of the present invention, the fresnel structure layer includes a first substrate, a surface of the first substrate facing the surface layer and a surface of the first substrate opposite to the surface layer are both flat surfaces, and the fresnel structure is located on the surface of the first substrate facing the surface layer.
In some embodiments of the present invention, the fresnel structure layer is an integrated structure, a surface of a side of the fresnel structure layer facing the surface layer is a fresnel structure, and a surface of a side of the fresnel structure layer opposite to the surface layer is a flat surface.
In some embodiments of the present invention, the fresnel structure layer is made of a thermoplastic material.
In some embodiments of the invention, the surface layer comprises:
a second substrate in contact with the adhesive layer;
and a diffusion layer on a surface of the second substrate on a side opposite to the adhesive layer.
In some embodiments of the invention, the second substrate comprises a light absorbing material.
In some embodiments of the present invention, the diffusion layer comprises a light absorbing material.
In some embodiments of the invention, the surface layer comprises:
a second substrate in contact with the adhesive layer; the second substrate is an atomized substrate.
In some embodiments of the present invention, the second substrate further comprises a light absorbing material.
In some embodiments of the invention, the surface layer comprises:
a second substrate in contact with the adhesive layer; the surface of the second substrate on the side opposite to the adhesive layer is an uneven surface.
In some embodiments of the present invention, the second substrate further comprises a light absorbing material.
In some embodiments of the invention, the surface layer comprises:
a second substrate in contact with the adhesive layer; the second substrate contains a light absorbing material therein.
In some embodiments of the present invention, the adhesive layer comprises a light absorbing material.
In a second aspect of the embodiments of the present invention, there is provided a projection system, including:
the projection equipment is used for emitting projection light; and
the projection screen is positioned on the light emergent side of the projection equipment, and the projection screen is any one of the projection screens.
In some embodiments of the present invention, the projection device is an ultra-short-focus laser projection device.
In some embodiments of the invention, the projection device comprises:
the three-color laser light source device is used for emitting three-primary-color laser;
the light modulation component is positioned on the light emitting side of the three-color laser light source device and is used for modulating the emergent laser of the three-color laser light source device;
and the projection lens is positioned on the light emergent side of the light modulation component.
In a third aspect of the embodiments of the present invention, a method for manufacturing a projection screen is provided, including:
a surface treatment step of providing a base material and subjecting the base material to surface treatment to obtain a surface layer;
a Fresnel structure manufacturing procedure, namely manufacturing a Fresnel structure layer, and forming a reflecting layer on the surface of the Fresnel structure layer; and
and a bonding step of bonding the surface layer and the surface of the Fresnel structure layer on the side where the reflection layer is formed, to each other by using a bonding layer.
In some embodiments of the present invention, the fresnel structure manufacturing process includes:
providing a first base material, then coating ultraviolet curing resin on the surface of a mould M with a Fresnel structure on the surface, impressing the first base material, irradiating UV light from one side of the first base material for curing to form the Fresnel structure layer, and
and forming the reflecting layer on the surface of the Fresnel structure.
In some embodiments of the present invention, the fresnel structure layer is made of a thermoplastic material; the Fresnel structure manufacturing process comprises the following steps:
providing a first substrate, wherein the first substrate adopts a thermoplastic material;
forming a reflective layer on the surface of the first substrate; and
and thermoforming the first base material on one side of the reflecting layer to form a Fresnel structure on the surface of the first base material, wherein the reflecting layer is positioned on the surface of the Fresnel structure.
In some embodiments of the present invention, the forming a reflective layer on the surface of the fresnel structure layer includes:
and evaporating or sputtering a metal film on the surface of the Fresnel structure layer to form the reflecting layer.
In some embodiments of the invention, the base material of the surface layer and the fresnel structure layer are made of flexible materials; the bonding process comprises the following steps:
making a roll of the surface layer;
making a roll of the adhesive layer;
attaching the bonding layer to the substrate of the surface layer by a roll-to-roll process;
and adhering the Fresnel structure layer with the reflecting layer to the side, opposite to the surface layer, of the adhesive layer by adopting a roll-to-roll process, and mutually adhering the surface layer and the surface, on the side, with the reflecting layer, of the Fresnel structure layer by utilizing the adhesive layer.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It should be noted that the drawings described below are only examples of the present invention, and that those skilled in the art will be able to derive other drawings without inventive step.
Fig. 1 is a schematic structural diagram of a projection system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a process for fabricating a Fresnel reflection structure according to the related art;
FIG. 3 is a second schematic diagram illustrating a manufacturing process of a Fresnel reflection structure according to the related art;
FIG. 4 is a diagram illustrating a Fresnel reflection structure reflecting light according to the related art;
FIG. 5 is a schematic structural diagram of a Fresnel reflection structure in the related art;
fig. 6 is a schematic structural diagram of a projection screen according to an embodiment of the present invention;
fig. 7 is a schematic view of a manufacturing process of a fresnel structure layer according to an embodiment of the present invention;
fig. 8 is a second schematic structural diagram of a projection screen according to an embodiment of the present invention;
fig. 9 is a third schematic structural diagram of a projection screen according to an embodiment of the present invention;
fig. 10 is a second schematic flow chart illustrating a manufacturing process of a fresnel structure layer according to an embodiment of the present invention;
fig. 11 is a fourth schematic structural diagram of a projection screen according to an embodiment of the present invention;
FIG. 12 is a fifth schematic view illustrating a structure of a projection screen according to an embodiment of the present invention;
fig. 13 is a sixth schematic structural view of a projection screen according to an embodiment of the present invention;
fig. 14 is a seventh schematic structural diagram of a projection screen according to an embodiment of the present invention;
fig. 15 is an eighth schematic structural diagram of a projection screen according to an embodiment of the present invention;
fig. 16 is a ninth schematic structural diagram of a projection screen according to an embodiment of the present invention;
fig. 17 is a tenth schematic view illustrating a structure of a projection screen according to an embodiment of the invention;
FIG. 18 is an eleventh schematic view illustrating a structure of a projection screen according to an embodiment of the present invention;
FIG. 19 is a schematic structural diagram of a projection apparatus according to an embodiment of the present invention;
FIG. 20 is a flowchart illustrating a method for manufacturing a projection screen according to an embodiment of the present invention;
FIG. 21 is a second flowchart illustrating a method for manufacturing a projection screen according to an embodiment of the present invention;
FIG. 22 is a schematic diagram illustrating a manufacturing process of a projection screen according to an embodiment of the present invention;
FIG. 23 is a second schematic view illustrating a manufacturing process of a projection screen according to an embodiment of the present invention;
fig. 24 is a third schematic view illustrating a manufacturing process of a projection screen according to an embodiment of the present invention;
fig. 25 is a fourth schematic flowchart illustrating a manufacturing process of a projection screen according to an embodiment of the present invention.
The light source device comprises a projection screen 1, a projection device 2, a Fresnel structure f, an aluminum paste Re ' -13, a reflecting layer Re1, a metal film Re1, a protective layer c, a surface layer 11, a Fresnel structure layer 12, an adhesive layer 14, a second substrate 111, a diffusion layer 112, a first substrate 121, a light source device 21, an illumination light path 22, a light modulation component 23, a projection lens 24, an ultraviolet curing resin f ', a thermoplastic material layer 12', an M-mold s1, a separation layer s2, a first roll J1, a second roll J2, a third roll J3, a fourth roll J4 and a fifth roll J5.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted. The words expressing the position and direction described in the present invention are illustrated in the accompanying drawings, but may be changed as required and still be within the scope of the present invention. The drawings of the present invention are for illustrative purposes only and do not represent true scale.
With the popularization of laser display products, the market of laser televisions is rapidly expanding as large-screen products replacing liquid crystal and organic EL televisions. In order to achieve better brightness and display effect, the projection apparatus is usually used in combination with a projection screen. Compared with projecting an image on a white wall surface, the projection screen has the advantages of higher gain, larger viewing angle, inhibition of external light reflection and excellent contrast.
Fig. 1 is a schematic structural diagram of a projection system according to an embodiment of the present invention.
As shown in fig. 1, the projection system includes: a projection device 2 and a projection screen 1.
The ultra-short-focus laser projection equipment has the characteristics of small projection distance and large projection picture, is very suitable for being applied to the household field, and needs to be matched with a projection screen for use in order to achieve better brightness and display effect.
In the current front projection type projection system, projection light is emitted from a projection device, the projection light is incident on a projection screen, and the reflected light is reflected forward by the projection screen, so that a projection image is viewed. Be provided with fresnel reflection structure in the projection screen, fresnel reflection structure has the effect of reflecting to projection light.
Fig. 2 is a schematic diagram illustrating a manufacturing process of a fresnel reflection structure in the related art; fig. 3 is a second schematic diagram illustrating a manufacturing process of a fresnel reflection structure in the related art.
As shown in fig. 2, in the fresnel reflection structure, conventionally, a (wet-coat) aluminum paste Re ' is usually wet-coated on the surface of the fresnel structure f, and the aluminum paste Re ' contains a solvent in addition to aluminum powder and resin, so that after the wet-coating of the aluminum paste Re ' on the surface of the fresnel structure f, it is necessary to perform a drying process, and after the drying process, the concave-convex reflection layer Re in which the valleys of the fresnel are filled as shown in fig. 3 is formed.
Fig. 4 is a schematic diagram of a fresnel reflection structure reflecting light in the related art.
As shown in fig. 4, when the reflective layer is formed by wet coating aluminum paste, the surface of the reflective layer Re after drying has only the approximate contour of the fresnel structure, and the surface thereof cannot maintain the same angle as the fresnel structure. While the surface angle of the fresnel structure is specially designed according to the incident angle of the projected light at the time of projection, as shown in fig. 4 (a), the projected light may be reflected in the front direction after being incident on the fresnel structure f. On the other hand, if the reflective layer Re side formed by wet coating aluminum paste is used as the light incident side, as shown in fig. 4 (b), since the reflective layer Re cannot maintain the angle of the surface of the fresnel structure f, the projection light cannot be reflected in an ideal direction when entering the reflective layer Re, and the direction of the reflection light deviates, the viewer in front of the projection screen cannot receive enough reflection light, and the display effect is affected.
Therefore, as can be seen from fig. 4, when the reflective layer Re is formed by wet coating the aluminum paste, the fresnel structure f side needs to be regarded as the light incident side, and the reflective layer Re side cannot be regarded as the light incident side. This requires that the fresnel structure f be made of an optical material with better light transmittance and higher processing precision, which results in higher cost.
In order to overcome the problems caused by adopting the aluminum paste, a metal film can be evaporated on the surface of the Fresnel structure. Fig. 5 is a schematic structural diagram of a fresnel reflection structure in the related art.
As shown in fig. 5, the metal film layer Re1 is deposited on the surface of the fresnel structure f to serve as the reflective layer, but in order to prevent the metal film Re1 from being scratched or the metal film Re1 from being peeled off, a protective layer c needs to be additionally provided on the surface of the metal film Re1, and the protective layer c can be formed by the wet coating method, which causes problems such as complexity of the process of the projection screen and high cost.
In view of this, embodiments of the present invention provide a projection screen, which can reduce the number of manufacturing processes and reduce the cost on the premise of ensuring good optical performance.
Fig. 6 is a schematic structural diagram of a projection screen according to an embodiment of the present invention.
As shown in fig. 6, a projection screen provided in an embodiment of the present invention includes: surface layer 11, fresnel structure layer 12, reflective layer 13 and adhesive layer 14.
The surface layer 11 is located on one side (the most surface side) of the projection screen, and the surface layer 11 is a film layer directly facing the viewer. In the embodiment of the present invention, the side of the surface layer 11 facing the viewer may be further surface-treated to achieve the effects of expanding the viewing angle, resisting ambient light reflection, resisting ceiling reflection, etc.
The reflective layer 13 is located on the surface of the fresnel structure layer 12 on the side facing the surface layer 11, with the surface of the reflective layer 13 on the side facing the surface layer 11 as a reflective surface. In the embodiment of the present invention, the reflective layer 13 is a metal thin film formed by an evaporation or sputtering process, the metal thin film covers the surface of the fresnel structure f, and has a uniform thickness, and the surface of the metal thin film has the same undulation tendency as that of the fresnel structure, and the surface of the metal thin film can maintain the reflection angle of the fresnel structure to the incident light during design.
In a preferred embodiment, the metal thin film may be made of a metal such as aluminum, silver, or titanium, but is not limited thereto.
An adhesive layer 14 is located between the surface layer 11 and the reflective layer 13. The adhesive layer 14 is used to bond the surface layer 11 and the side surface of the fresnel-structure layer 12 on which the reflective layer 13 is provided to each other.
In a state that the fresnel structure f faces the surface layer 11, the adhesive layer 14 is used to bond the surface layer 11 and the fresnel structure layer 12 on which the reflective layer 13 is formed, so that the adhesive layer 14 can be used to directly bond the surface layer 11 and the reflective layer 13, and the reflective layer 13 does not need to be provided with a protective layer, thereby simplifying the process flow and reducing the cost.
Taking the surface of the side of the reflective layer 13 facing the surface layer 11, which is overlaid on the fresnel structure f, as a reflective surface, as shown in fig. 6, the projected light does not need to pass through the fresnel structure layer and then be reflected, but is reflected by the reflective layer directly incident on the fresnel structure surface. Therefore, in the process that the projection light enters the projection screen and is reflected, the number of the passing film layers is reduced, the light loss caused by the reflection of the light at the interface of each film layer and the absorption of the light by the film layers is reduced, more light can be reflected forward, and the gain is improved.
Because the fresnel structure layer 12 is located at the side farthest from the viewer, and no light is incident into the fresnel structure layer 12, the specification requirements on the light transmittance and the damage of the fresnel structure layer 12 are reduced, the fresnel structure layer 12 is not required to be made of expensive optical materials, and the fresnel structure layer can be made of cheaper industrial materials, so that the production cost is reduced.
In a preferred embodiment, the Adhesive layer 14 can be made of a Pressure Sensitive Adhesive (PSA), an ultraviolet curable resin, or a two-component curable resin. In addition, the adhesive layer 14 may be made of other materials having adhesive properties, which is not limited herein.
In some embodiments, as shown in fig. 6, the fresnel structure layer 12 includes a first substrate 121, a surface of the first substrate 121 facing the surface layer 11 and a surface of the first substrate opposite to the surface layer 11 are both flat surfaces, and the fresnel structure f is located on the surface of the first substrate 121 facing the surface layer 11.
The first substrate 121 may be made of a relatively inexpensive industrial material, for example, the first substrate 121 may be made of Polyethylene Terephthalate (PET), polyethylene Naphthalate (PEN), polycarbonate (PC), polymethyl Methacrylate (PMMA), triacetyl cellulose (TAC), cyclo Olefin Polymer (COP), thermoplastic Polyurethane (TPU), polyvinyl chloride (PVC), polyimide (PI), polyamide (PA), polyethylene (PE), polypropylene (PP), and the like.
The fresnel structure f may be fabricated by a UV molding process using a mold M having a fresnel structure and an ultraviolet curable resin. Fig. 7 is a schematic view of a manufacturing process of a fresnel structure layer according to an embodiment of the present invention.
For example, the fresnel structure f may be formed by applying an ultraviolet curable resin to the mold M having the fresnel structure, and imprinting and UV curing the ultraviolet curable resin using the first base material. As shown in fig. 7, an ultraviolet curable resin f' is first coated on a mold M having a fresnel structure on the surface thereof. Next, the first base material 121 is embossed at a predetermined pressure, and the ultraviolet curable resin f' is cured by UV irradiation from the first base material 121 side. Since the ultraviolet curable resin f' is cured and closely bonded to the first base material 121, the fresnel shape of the mold M is transferred to the first base material 121, and the fresnel structure f can be formed on the surface of the first base material 121.
In addition, other materials and other manufacturing methods may be used to manufacture the fresnel structure, which is not limited herein.
Fig. 8 is a second schematic structural diagram of a projection screen according to an embodiment of the invention.
In some embodiments, as shown in fig. 8, the fresnel structure layer 12 is a unitary structure, the surface of the fresnel structure layer 12 facing the surface layer 11 is a fresnel structure f, and the surface of the fresnel structure layer 12 opposite to the surface layer 11 is a flat surface.
The Fresnel structure layer with the integrated structure can save the process of combining the base material with the Fresnel structure, thereby further simplifying the manufacturing process.
Fig. 9 is a third schematic structural diagram of a projection screen according to an embodiment of the present invention.
In some embodiments, as shown in fig. 9, the material of the fresnel structure layer may be made of a colored thermoplastic material with a tensile strength of 100MPa or less.
In specific implementation, the fresnel structure layer 12 of the integral structure may be manufactured by thermoforming, and the fresnel structure layer may be made of thermoplastic material such as TPU or PVC, which is not limited herein.
Fig. 10 is a second schematic flow chart illustrating a manufacturing process of a fresnel structure layer according to an embodiment of the invention.
Specifically, as shown in fig. 10, when the fresnel structure layer is integrally formed by a thermal molding method, a metal thin film may be deposited or sputtered on one surface of the thermoplastic material layer 12 'as the reflective layer 13, and the thermoplastic material layer 12' may be thermally molded through the metal thin film by using a heated mold M having a fresnel structure, thereby forming the fresnel structure layer 12 having a fresnel structure with a metal thin film on the surface.
Fig. 11 is a fourth schematic structural diagram of a projection screen according to an embodiment of the present invention.
As shown in fig. 11, the surface layer 11 includes: a second substrate 111 and a diffusion layer 112.
The second substrate 111 serves as a substrate of the diffusion layer 112, the second substrate 111 is in contact with the adhesive layer 14, and the diffusion layer 112 is located on a surface of the second substrate 111 on the opposite side of the adhesive layer 14.
The prior projection system usually adopts a laser light source, and laser has higher collimation, so that the divergence angle of projection light is smaller, the collimation of the light reflected by a projection screen is high, and the view angle is smaller. Through setting up diffusion layer 112, can make light through diffusion layer back exit angle diversified to make finally have certain angle of divergence by the light of projection screen outgoing, increased the view angle that spectator watched the projection image. In addition, the diffusion layer 112 has a certain function of resisting the reflection of ambient light, which is beneficial to improving the contrast of the image. The diffuser layer 112 also facilitates the elimination of laser speckle and optimization of the projected image.
The diffusion layer 112 may be formed on the surface of the second substrate 111 by containing diffusion particles in a resin material. The diffusion particles can be, but are not limited to, silica particles, alumina particles, titania particles, ceria particles, zirconia particles, tantalum oxide particles, zinc oxide particles, magnesium fluoride particles, and the like. The diffusion layer 112 may be formed by various coating methods, which are not limited herein.
The second substrate 111 may be PET, PEN, PC, PMMA, TAC, COP, TPU, PVC, PI, PA, PE, PP, etc., but is not limited thereto.
In some embodiments, as shown in fig. 11, the second substrate 111 may contain a light absorbing material, the light absorbing material may generally be a pigment material with light absorption, and the second substrate 111 contains a pigment material, and the second substrate 111 is colored to make the second substrate 111 have light absorbing property, thereby playing a role of resisting reflection of ambient light, improving contrast of a projection image, and improving black luminance of a projection screen.
Fig. 12 is a fifth schematic structural view of a projection screen according to an embodiment of the invention.
In some embodiments, as shown in fig. 12, the diffusion layer 112 may further include a light absorbing material, and the diffusion layer 112 is colored to form a colored diffusion layer, where the colored diffusion layer has the properties of diffusing and absorbing light, so as to simultaneously expand the viewing angle, resist ambient light reflection, and improve the black brightness of the projection screen.
Fig. 13 is a sixth schematic structural view of a projection screen according to an embodiment of the present invention.
In some embodiments, as shown in fig. 13, the surface layer 11 only includes the second substrate 111, and the second substrate 111 is in contact with the adhesive layer 14 and is bonded to the fresnel structure layer 12 through the adhesive layer 14. Second substrate 111 adopts the atomizing substrate, and the atomizing substrate has certain light diffusion effect, can enlarge the field of vision angle, and the atomizing substrate can also reduce the reflection of light to avoid light to form clear image at the ceiling, have the effect of anti-ceiling reflection of light, can promote spectator's viewing experience.
Fig. 14 is a seventh schematic structural diagram of a projection screen according to an embodiment of the present invention.
In some embodiments, the atomized substrate may also be colored by including a light absorbing material in the second substrate, as shown in FIG. 14. The colored base material has both light diffusing and light absorbing properties, thereby having the effects of widening the viewing angle, resisting ceiling reflection and the like, and improving the black luminance of a projection screen by reducing ambient light reflection.
Fig. 15 is an eighth schematic structural diagram of a projection screen according to an embodiment of the present invention.
In some embodiments, as shown in fig. 15, the surface layer 11 only includes the second substrate 111, and the second substrate 111 is in contact with the adhesive layer 14 and is bonded to the fresnel structure layer 12 through the adhesive layer 14. The surface of the second substrate 111 on the side opposite to the adhesive layer 14 is an uneven surface. The uneven surface may be formed by sand blasting or alkali treatment of the surface of the second substrate 111, which is not limited herein. The uneven surface of the second substrate 111 can perform certain light diffusion and atomization functions, so that the effects of expanding a visual angle, resisting ceiling reflection and the like can be achieved.
Fig. 16 is a ninth schematic structural diagram of a projection screen according to an embodiment of the present invention.
In some embodiments, as shown in fig. 16, the second substrate 111 may also be colored by further including a light absorbing material in the second substrate 111. The colored second substrate has the properties of light diffusion, light reflection reduction and light absorption, so that the effects of visual angle diffusion, ambient light reflection resistance and the like can be simultaneously realized, and the black brightness of the projection screen is improved.
Fig. 17 is a tenth schematic structural diagram of a projection screen according to an embodiment of the present invention.
In some embodiments, as shown in fig. 17, the surface layer 11 includes only the second substrate 111, and the second substrate 111 is in contact with the adhesive layer 14 and is bonded to the fresnel structure layer 12 through the adhesive layer 14. The second base material 111 contains a light absorbing material, and the second base material 111 is colored, so that the second base material has light absorbing properties, and can reduce ambient light reflection, improve the contrast of a projected image, and improve the black luminance of a projection screen.
When the surface layer 11 only includes the second base material 111, the second base material 111 made of a special material is used, the surface of the second base material 111 is treated, or the second base material 111 is colored, so that the second base material can have the functions of light diffusion, ambient light reflection resistance, ceiling reflection resistance and the like, the manufacture of other film layers can be omitted, and the manufacturing process can be simplified.
Fig. 18 is an eleventh schematic structural diagram of a projection screen according to an embodiment of the present invention.
In some embodiments, as shown in fig. 18, the adhesive layer 14 may further include a light absorbing material, and the adhesive layer 14 is colored to make the adhesive layer 14 have a light absorbing property, so that the adhesive layer 14 can play a role in resisting ambient light reflection, and improve black luminance of the projection screen.
In specific implementation, the coloring may be performed by using a material having light absorption property such as carbon black and dye, and is not limited herein. Specifically, the material of the film layer to be colored in the surface layer or the adhesive layer may contain a material such as carbon black or a dye to darken the color of the film layer, thereby providing a light absorbing effect. It is worth mentioning that the film layer in the projection screen can be colored by making the material of the film layer contain pigment material, the colored film layer has light absorption property, and can absorb the ambient light incident into the projection screen, thereby playing the role of resisting the reflection of the ambient light, improving the image contrast and improving the black brightness of the projection screen. In addition, the colored film layer can absorb not only ambient light but also projection light, so that the shading degree and transparency of the colored film layer need to be adjusted by controlling the addition amount and color of the pigment material, thereby being more suitable for the use requirement of the projection screen.
In particular implementations, the surface layer and any of the adhesive layers in the projection screen may be colored to achieve light absorption.
Based on the same inventive concept, an embodiment of the present invention further provides a projection system, as shown in fig. 1, the projection system includes: a projection device 2 and a projection screen 1 located at the light exit side of the projection device 2.
Fig. 19 is a schematic structural diagram of a projection apparatus according to an embodiment of the present invention.
As shown in fig. 19, the projection apparatus includes: a light source device 21, an illumination optical path 22, a light modulation member 23, and a projection lens 24. The illumination light path 22 is located on the light exit side of the light source device 21, the light modulation component 23 is located on the light exit side of the illumination light path 22, and the projection lens 24 is located on the light exit side of the light modulation component 23.
The light source device 21 may be a laser light source device. The laser light source device may be a single-color laser, a laser capable of emitting laser light of a plurality of colors, or a plurality of lasers capable of emitting laser light of different colors. When the laser light source device adopts a monochromatic laser, the laser display device also needs to be provided with a color wheel, the color wheel is used for carrying out color conversion, and the monochromatic laser can be matched with the color wheel to realize the purpose of emitting primary color light with different colors according to time sequence. When the laser light source device adopts a laser capable of emitting lasers of various colors, the laser light source needs to be controlled to emit the lasers of different colors as primary color light according to time sequence.
In the embodiment of the present invention, the light source device may adopt a three-color laser light source device, and the three-color laser light source device may be a laser that emits three-primary-color laser, such as an MCL laser; it can also include red laser, green laser and blue laser to emit three primary color laser. The three-color laser light source device is favorable for improving the color gamut of a projected image, has better color expression and can accurately reproduce an input image.
The illumination optical path 22 is located on the light emitting side of the light source device 21, and the illumination optical path 22 collimates the light emitted from the light source device 21 and allows the light emitted from the light source device 21 to enter the light modulation member 23 at an appropriate angle. The illumination path 22 may include a plurality of lenses or lens groups, which are not limited herein.
The light modulation section 23 is for modulating the incident light. In specific implementation, the light modulation component 23 may employ a Digital Micromirror (DMD). After passing through illumination path 22, the light beam conforms to the required illumination size and angle of incidence for the DMD. The DMD surface includes a plurality of minute mirrors each of which can be individually driven to deflect, and the reflected light is made incident on the projection lens 24 by controlling the deflection angle of the DMD.
The projection lens 24 forms an image of the light emitted from the light modulation unit 23, and projects the image after the image is formed by the projection lens 24.
In the embodiment of the present invention, the projection device 2 may adopt an ultra-short-focus projection device, that is, the projection lens 24 in the projection device adopts an ultra-short-focus projection lens. The distance between the projection device 2 and the projection screen 1 can be greatly shortened by adopting the ultra-short-focus projection device, and large-size image display can be realized while the projection distance is shortened.
The projection screen 1 is located on the light-emitting side of the projection lens in the projection apparatus. The projection screen 1 includes a surface layer, a fresnel structure layer, a reflection layer, and an adhesive layer. Adopt the bond line to bond superficial layer and the fresnel structure layer that is formed with the reflection stratum, and set up fresnel structure towards superficial layer one side, can make the bond line directly bond superficial layer and reflection stratum like this, no longer need set up the technology of a layer of protective layer again to the reflection stratum to can simplify process flow, reduce cost. The side surface of the reflection layer covering the Fresnel structure and facing the surface layer is used as a reflection surface, so that projection light does not need to pass through the Fresnel structure layer and then be reflected, but directly enters the reflection layer on the surface of the Fresnel structure to be reflected, the number of the film layers passing through the projection light in the process of entering the projection screen and being reflected is reduced, light loss caused by reflection of the light at the interface of each film layer and absorption of the light by the film layers can be reduced, more light is reflected forward, and gain is improved. Because the Fresnel structure layer is positioned on the side farthest from audiences, and no light is incident into the Fresnel structure layer, the requirements on the light transmission and the damage specification of the Fresnel structure layer are reduced, expensive optical materials are not needed to be used for manufacturing the Fresnel structure layer, and cheaper industrial materials can be used for manufacturing, so that the production cost is reduced.
In another aspect of the embodiments of the present invention, a method for manufacturing a projection screen is provided, and fig. 20 is a flowchart of the method for manufacturing a projection screen according to the embodiments of the present invention.
As shown in fig. 20, the method for manufacturing the projection screen includes:
s10, providing a base material, and carrying out surface treatment on the base material to obtain a surface layer;
s20, manufacturing a Fresnel structure layer, and forming a reflection layer on the surface of the Fresnel structure layer;
and S30, bonding the surface layer and the surface of the Fresnel structure layer on the side where the reflection layer is formed by using a bonding layer.
The whole process of the manufacturing method of the projection screen provided by the embodiment of the invention is that the surface layer and the Fresnel structure layer with the reflecting layer are respectively formed, and then the two parts are bonded by adopting the bonding layer.
The Fresnel structure layer can be formed by UV molding.
In some embodiments, referring to fig. 7, first, an ultraviolet curable resin f' is coated on a mold M having a fresnel structure on the surface thereof. Next, the first base material 121 is embossed at a predetermined pressure, and the ultraviolet curable resin f' is cured by UV irradiation from the first base material 121 side. Since the ultraviolet curable resin is cured and bonded to the first base material 121, the fresnel shape of the mold M is transferred to the first base material 121, and the fresnel structure f can be formed on the surface of the first base material 121.
Then, a metal thin film is deposited or sputtered on the surface of the fresnel structure f to form a reflective layer.
In specific implementation, the first substrate 121 may be PET, PEN, PC, PMMA, TAC, COP, TPU, PVC, PI, PA, PE, PP, or the like. The metal thin film may be made of metal such as aluminum, silver, and titanium, and is not limited herein.
In some embodiments, referring to fig. 10, when the integrated fresnel structure layer is manufactured by a thermal forming method, a metal film is deposited or sputtered on one surface of the thermoplastic material layer 12 'as the reflective layer 13, and then the thermoplastic material layer 12' is thermally formed through the metal film by using a heated mold M having a fresnel structure, thereby forming the fresnel structure layer 12 having a fresnel structure with a metal film on the surface.
In a specific implementation, the first substrate 121 may be made of thermoplastic material such as TPU or PVC, and the metal thin film may be made of metal such as aluminum, silver, or titanium, which is not limited herein.
In embodiments of the present invention, the surface layer may be produced by subjecting the substrate to surface treatment in different ways. In order to distinguish the base material in the fresnel structure layer from the base material in the surface layer, the base material in the surface layer is referred to as a second base material.
In some embodiments, in order to enlarge the viewing angle of the projection screen, a diffusion layer may be formed on the surface of the second substrate to diffuse light. Or the material of the second substrate may contain diffusion particles so that the second substrate has a light diffusion effect.
The diffusion layer may be formed on the surface of the second base material by incorporating diffusion particles in a resin material and then coating the material of the diffusion layer in various ways. The material of the second base material contains diffusion particles, so that the second base material has the light diffusion function directly when the second base material is formed. The diffusion particles may be, but not limited to, silica particles, alumina particles, titania particles, ceria particles, zirconia particles, tantalum oxide particles, zinc oxide particles, magnesium fluoride particles, and the like.
In some embodiments, in order to avoid the projection light reflecting on the outermost surface of the projection screen to form the ceiling light, the second substrate may be a misted substrate, or a misted surface may be formed on the viewer side of the surface layer.
The atomized substrate may be made of a material with haze, and the atomized surface may be obtained by performing sand blasting or alkali treatment on the second substrate or a film layer on the surface of the second substrate, which is not limited herein.
In some embodiments, to improve the contrast of the projection screen, either the surface layer or the adhesive layer may be colored, so that the colored film layer has a light absorption effect, and thus may absorb the ambient light incident on the projection screen, which may improve the contrast of the image.
However, in order to color any of the surface layer and the adhesive layer, the color of the film layer may be darkened by adding a light absorbing material, such as carbon black or a dye, to the material of the film layer, thereby allowing the film layer to absorb light. The coloring method may be appropriately freely selected, but is not limited thereto.
In specific implementation, different forms of surface layers can be manufactured according to actual use to enable the surface layers to have corresponding functions, and the specific form of the surface layer is not limited in the embodiment of the invention.
And after the surface layer and the Fresnel structure layer with the reflecting layer are prepared, the surface layer and the Fresnel structure layer are bonded by adopting a bonding layer to manufacture the projection screen.
In the embodiment of the invention, the base material (and the film layer on the base material) in the surface layer and the Fresnel structure layer can also be made of flexible materials, so that a projection screen can be manufactured by matching with a roll-to-roll process, and the manufacturing throughput is improved.
Fig. 21 is a second flowchart of a method for manufacturing a projection screen according to an embodiment of the present invention.
Specifically, as shown in fig. 21, when the projection screen is manufactured by a roll-to-roll process, the manufacturing method includes:
s100, manufacturing a roll of the surface layer;
s200, manufacturing a roll of the adhesive layer;
s300, adhering the bonding layer to the base material of the surface layer by adopting a roll-to-roll process;
s400, attaching the Fresnel structure layer with the reflection layer to the adhesive layer by adopting a roll-to-roll process, so that the surface layer and the surface of the Fresnel structure layer, on which the reflection layer is formed, are adhered to each other by the adhesive layer.
The embodiment of the invention specifically describes the process of manufacturing the projection screen by the roll-to-roll process by taking the structure that the surface layer forms the diffusion layer on the surface of the base material as an example, when the surface layer adopts other structures, other film layers may not be formed on the surface of the base material, and the same diffusion effect can be brought by other modes. In addition, in order to distinguish the base material in the fresnel structure layer from the base material in the surface layer, the base material in the fresnel structure layer is referred to as a first base material, and the base material in the surface layer is referred to as a second base material.
Fig. 22 to 25 are schematic diagrams illustrating a manufacturing process of a projection screen according to an embodiment of the present invention.
Specifically, as shown in fig. 22, a diffusion layer 112 may be laminated on the surface of the second substrate 111 to form the surface layer 11.
Since the manufacturing method shown in the embodiment of the present invention is a roll-to-roll process, the second substrate 111 needs to be made of a flexible material with a curling property, for example, flexible PET, and the thickness is appropriately selected from 38 μm to 250 μm. The diffusion layer 112 may be formed by various coating methods, which are not limited herein. The diffusion layer 112 may have an anisotropic diffusion function.
The surface layer 11 is manufactured and a roll of the surface layer is formed as a first roll J1.
Meanwhile, as shown in fig. 22, the adhesive layer 14 is provided, and the adhesive layer 14 is rolled to form a second roll J2. As can be seen from fig. 22, normally, both sides of the adhesive layer 14 are provided with separation layers (separators) s1, s2 for preventing the adhesive layers 14 from sticking to each other during the curling process.
The pressure-sensitive adhesive layer 14 is required to have stable adhesive strength, and in particular, PSA, preferably having a storage modulus of 100kPa or less and a thickness of 50 μm or more at room temperature, may be used as the pressure-sensitive adhesive layer 14.
As shown in fig. 23, the release layer s1 on the light release side of the adhesive layer 14 in the second roll J2 is peeled off and bonded to the second substrate surface of the first roll J1, and as shown in fig. 24, a third roll J3 having a structure of the surface layer 11/the adhesive layer 14/the release layer s2 is formed.
In an embodiment of the present invention, any one of the above methods may be adopted to fabricate the fresnel structure layer 12, which is not limited herein. Taking the structure shown in fig. 25 as an example, the fresnel structure layer 12 can be formed by UV molding on the surface of an industrial PET substrate (i.e., a first substrate). Among them, the thickness of the industrial PET substrate is not limited to 25 μm to 350 μm, and may be appropriately and freely selected.
After the fresnel structure layer 12 is manufactured, a roll of the fresnel structure layer 12 is manufactured, and a metal film is evaporated or sputtered on the surface of the fresnel structure by a roll-to-roll sputtering process to form the reflective layer 13, thereby obtaining a fourth roll J4 of the fresnel structure layer with the metal film.
Further, as shown in fig. 25, the release layer s2 on the heavy release side on the other side of the adhesive layer 14 in the third roll J3 is peeled off and bonded to the fresnel structure layer of the fourth roll J4, and as shown in fig. 25, a fifth roll J5 of the surface layer 11/adhesive layer 14/fresnel structure is produced.
Next, the fifth roll J5 is wound out, and cut to a size required for the projection screen, thereby completing the production of the projection screen. When the fresnel structure layer is not filled with the adhesive layer and air bubbles remain, auto cave processing may be performed. The treatment conditions may be, for example, 50 ℃ and 0.9MPa for 30 minutes.
According to a first inventive concept, a projection screen includes a surface layer, a fresnel structure layer, a reflective layer, and an adhesive layer. The surface layer and the Fresnel structure layer with the reflecting layer are bonded by the bonding layer, and the Fresnel structure layer is arranged facing to one side of the surface layer, so that the surface layer and the reflecting layer can be directly bonded by the bonding layer. Therefore, a protective layer required by the reflecting layer of the metal film is not required, the process flow can be simplified, and the cost is reduced. In addition, the reflecting layer of the metal film is formed on the Fresnel structure by evaporation or sputtering, one side surface facing the surface layer of the reflecting layer is used as a reflecting surface, projection light does not need to pass through the Fresnel structure layer and then be reflected, but directly enters the reflecting layer on the surface of the Fresnel structure to be reflected, so that the number of the film layers passing through the projection light in the process of entering the projection screen and being reflected is reduced, light loss caused by reflection of the light at interfaces of the film layers and absorption of the light by the film layers is reduced, more light is reflected forward, and gain is improved. Because the Fresnel structure layer is positioned on the side farthest from audiences, and no light is incident into the Fresnel structure layer, the requirements on the light transmission and the damage specification of the Fresnel structure layer are reduced, expensive optical materials are not needed to be used for manufacturing the Fresnel structure layer, and cheaper industrial materials can be used for manufacturing, so that the production cost is reduced.
According to a second inventive concept, the fresnel structure layer includes a first base material, a surface of the first base material facing the surface layer and a surface of the first base material opposite to the surface layer are flat surfaces, and the fresnel structure is located on the surface of the first base material facing the surface layer. The fresnel structure may be fabricated by a UV molding process using a mold M having a fresnel structure and an ultraviolet curable resin on the surface of the first base material.
According to the third inventive concept, the fresnel structure layer is an integral structure, the surface of the fresnel structure layer facing the surface layer is a fresnel structure, and the surface of the fresnel structure layer opposite to the surface layer is a flat surface. The Fresnel structure layer with the integrated structure can save the process of combining the base material with the Fresnel structure, and further simplifies the manufacturing process.
According to the fourth inventive concept, the fresnel structure layer can be made of colored or transparent thermoplastic material with tensile strength of less than 100MPa by thermoforming.
According to a fifth inventive concept, the surface layer includes a second substrate and a diffusion layer. The second substrate is used as a substrate of a diffusion layer, the second substrate is in contact with the adhesive layer, and the diffusion layer is positioned on the surface of the second substrate opposite to the adhesive layer. Through setting up the diffusion barrier, can make light through diffusion barrier back exit angle diversified to make finally have certain diffusion angle by the light of projection screen outgoing, increased the view angle that spectator watched the projection image. Besides, the diffusion layer also has the function of resisting ceiling reflection.
According to the sixth inventive concept, the second base material may be made to contain a light absorbing material, and the light absorbing material may generally employ a pigment material having a light absorbing property. The absorption of ambient light in the second base material improves the black luminance, and the contrast of the projected image can be improved.
According to the seventh inventive concept, the light absorbing material may be contained in the diffusion layer, and the diffusion layer may be colored to form a colored diffusion layer, and the colored diffusion layer may simultaneously have a property of diffusing light and absorbing light, thereby improving black luminance of the projection screen by enlarging a viewing angle and absorbing ambient light.
According to the eighth inventive concept, the surface layer only comprises the second base material, the second base material is an atomized base material, the atomized base material has a certain light diffusion effect and can enlarge the view angle, and the atomized base material can also reduce the reflection of light rays, so that the light rays are prevented from forming clear images on the ceiling, the ceiling reflection resistant effect is achieved, and the viewing experience of audiences can be improved.
According to the ninth inventive concept, the second base material may be made to contain a light absorbing material therein, thereby coloring the atomized base material. The coloring and atomizing base material has the properties of reducing light reflection, light diffusion and light absorption, thereby simultaneously playing the roles of resisting ambient light reflection, resisting ceiling reflection and the like and improving the black brightness of a projection screen.
According to the tenth inventive concept, the surface layer includes only the second base material, and the surface of the second base material on the side opposite to the adhesive layer is an uneven surface. The uneven surface may be formed by grinding the surface of the second substrate or subjecting the surface of the second substrate to sand blasting or alkali treatment. The uneven surface of the second base material has a certain light diffusion effect, so that the effects of expanding a visual angle, resisting ceiling reflection and the like can be achieved.
According to the eleventh inventive concept, the surface of the second base material is subjected to sand blasting or alkali treatment using a colored base material containing a light absorbing material in the second base material, thereby having both light diffusing and light absorbing properties, whereby the black luminance of the projection screen can be improved by enlarging the viewing angle and absorbing ambient light.
According to the twelfth inventive concept, the surface layer comprises only the second substrate, the second substrate 111 comprising the light absorbing material therein. The second base material is colored, so that the second base material has light absorption property, the black brightness of the projection screen can be improved through the absorption of ambient light, and the contrast of a projected image is improved.
According to the thirteenth inventive concept, the light absorbing material may be contained in the adhesive layer, and the adhesive layer may be colored to have a light absorbing property, thereby playing a role of resisting reflection of ambient light and improving black luminance of the projection screen.
According to a fourteenth inventive concept, a method of manufacturing a projection screen includes: providing a base material, and carrying out surface treatment on the base material to obtain a surface layer; manufacturing a Fresnel structure layer, and forming a reflecting layer on the surface of the Fresnel structure layer; and bonding the surface layer and the surface of the Fresnel structure layer on the side on which the reflecting layer is formed by using a bonding layer. The whole process of the manufacturing method of the projection screen comprises the steps of respectively forming a surface layer and a Fresnel structure layer with a reflection layer, and then bonding the two parts by adopting a bonding layer.
According to a fifteenth inventive concept, a method of manufacturing a projection screen includes: making a roll of the surface layer; making a roll of adhesive layer; adhering the bonding layer to the substrate of the surface layer by adopting a roll-to-roll process; and attaching the Fresnel structure layer with the reflecting layer to the adhesive layer by adopting a roll-to-roll process, so that the surface layer and the surface of one side of the Fresnel structure layer, on which the reflecting layer is formed, are adhered to each other through the adhesive layer. The whole process of the manufacturing method of the projection screen comprises the steps of respectively forming a surface layer and a Fresnel structure layer with a reflection layer, and then bonding the two parts by adopting a bonding layer. The roll-to-roll process is adopted for manufacturing, so that the process throughput can be improved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (15)
1. A projection screen, comprising:
a surface layer;
the Fresnel structure layer is positioned on one side of the surface layer, and a Fresnel structure is arranged on the surface of the Fresnel structure layer facing to one side of the surface layer;
the reflecting layer is positioned on the surface of one side, facing the surface layer, of the Fresnel structure layer; and
and the bonding layer is positioned between the surface layer and the reflecting layer and used for bonding the surface layer and the surface of one side, provided with the reflecting layer, of the Fresnel structure layer.
2. The projection screen of claim 1 wherein the reflective layer is a thin metal film.
3. The projection screen of claim 1, wherein the fresnel structure layer comprises a first substrate, wherein a surface of the first substrate facing the surface layer and a surface of the first substrate opposite the surface layer are flat surfaces, and wherein the fresnel structure is located on the surface of the first substrate facing the surface layer.
4. The projection screen of claim 1, wherein the fresnel structure layer is a unitary structure, a surface of the fresnel structure layer facing the surface layer is a fresnel structure, and a surface of the fresnel structure layer opposite to the surface layer is a flat surface.
5. A projection screen according to claim 4 wherein the Fresnel structure layer is of a thermoplastic material.
6. The projection screen of any one of claims 1-5 wherein the surface layer comprises:
a second substrate in contact with the adhesive layer; and
and a diffusion layer on a surface of the second substrate on a side opposite to the adhesive layer.
7. The projection screen of claim 6 wherein the second substrate comprises a light absorbing material; alternatively, the diffusion layer contains a light absorbing material.
8. The projection screen of any of claims 1-5 wherein the adhesive layer comprises a light absorbing material.
9. A projection system, comprising:
the projection equipment is used for emitting projection light; and
a projection screen located on a light exit side of the projection device, the projection screen being as claimed in any one of claims 1 to 8.
10. The projection system of claim 9, wherein the projection device is an ultra-short-focus laser projection device; the projection apparatus includes:
the three-color laser light source device is used for emitting three-primary-color laser;
the light modulation component is positioned on the light emitting side of the three-color laser light source device and is used for modulating the emergent laser of the three-color laser light source device;
and the projection lens is positioned on the light emergent side of the light modulation component.
11. A method of making a projection screen, comprising:
a surface treatment step of providing a base material and subjecting the base material to surface treatment to obtain a surface layer;
a Fresnel structure manufacturing procedure, namely manufacturing a Fresnel structure layer, and forming a reflecting layer on the surface of the Fresnel structure layer; and
and a bonding step of bonding the surface layer and the surface of the Fresnel structure layer on the side where the reflection layer is formed, to each other by using a bonding layer.
12. The method of manufacturing of claim 11,
the Fresnel structure manufacturing process comprises the following steps:
providing a first base material, and forming a Fresnel structure on the surface of the first base material by using ultraviolet curing resin; and
and forming the reflecting layer on the surface of the Fresnel structure.
13. The method of manufacturing of claim 11,
the Fresnel structure layer is made of thermoplastic materials;
the Fresnel structure manufacturing process comprises the following steps:
providing a first substrate, wherein the first substrate adopts a thermoplastic material;
forming a reflective layer on the surface of the first substrate; and
and thermoforming the first base material on one side of the reflecting layer, forming a Fresnel structure on the surface of the first base material, and positioning the reflecting layer on the surface of the Fresnel structure.
14. The manufacturing method according to claim 12 or 13,
forming a reflecting layer on the surface of the Fresnel structure layer, wherein the reflecting layer comprises:
and evaporating or sputtering a metal film on the surface of the Fresnel structure layer to form the reflecting layer.
15. The method of manufacturing according to any one of claims 11 to 13,
the base material of the surface layer and the Fresnel structure layer are made of flexible materials;
the bonding process comprises the following steps:
making a roll of the surface layer;
making a roll of the adhesive layer;
attaching the bonding layer to the substrate of the surface layer by a roll-to-roll process;
and adhering the Fresnel structure layer with the reflecting layer to the side, opposite to the surface layer, of the adhesive layer by adopting a roll-to-roll process, and mutually adhering the surface layer and the surface, on the side, with the reflecting layer, of the Fresnel structure layer by utilizing the adhesive layer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211265387.4A CN115729026A (en) | 2022-10-17 | 2022-10-17 | Projection screen, manufacturing method thereof and projection system |
| PCT/CN2023/102703 WO2024082686A1 (en) | 2022-10-17 | 2023-06-27 | Projection screen and manufacturing method therefor, and projection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211265387.4A CN115729026A (en) | 2022-10-17 | 2022-10-17 | Projection screen, manufacturing method thereof and projection system |
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| CN115729026A true CN115729026A (en) | 2023-03-03 |
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| CN202211265387.4A Pending CN115729026A (en) | 2022-10-17 | 2022-10-17 | Projection screen, manufacturing method thereof and projection system |
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| Country | Link |
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| CN (1) | CN115729026A (en) |
| WO (1) | WO2024082686A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024082686A1 (en) * | 2022-10-17 | 2024-04-25 | 青岛海信激光显示股份有限公司 | Projection screen and manufacturing method therefor, and projection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004341407A (en) * | 2003-05-19 | 2004-12-02 | Sony Corp | Screen and its manufacturing method |
| CN203786458U (en) * | 2014-04-21 | 2014-08-20 | 刘文华 | Self-cleaning laser orthographic projection screen |
| JP2016151685A (en) * | 2015-02-18 | 2016-08-22 | 大日本印刷株式会社 | Reflection screen and video display system |
| CN110903788B (en) * | 2018-08-28 | 2021-11-12 | 深圳光峰科技股份有限公司 | Reflective curing adhesive, transparent curing adhesive, projection screen and preparation method thereof |
| CN209446965U (en) * | 2019-02-27 | 2019-09-27 | 东莞市银泰丰光学科技有限公司 | A kind of very-short-reach laser projection system of Fresnel glass lens |
| CN113219776A (en) * | 2020-01-17 | 2021-08-06 | 深圳光峰科技股份有限公司 | Projection screen and projection system |
| CN112099303A (en) * | 2020-08-06 | 2020-12-18 | 广西佳视微电子科技有限公司 | Fresnel light-resistant projection screen and manufacturing method thereof |
| CN215729261U (en) * | 2021-01-18 | 2022-02-01 | 维业达科技(江苏)有限公司 | Projection curtain |
| CN113741135A (en) * | 2021-09-27 | 2021-12-03 | 青岛海信激光显示股份有限公司 | Projection screen and projection device |
| CN115729026A (en) * | 2022-10-17 | 2023-03-03 | 青岛海信激光显示股份有限公司 | Projection screen, manufacturing method thereof and projection system |
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2022
- 2022-10-17 CN CN202211265387.4A patent/CN115729026A/en active Pending
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| WO2024082686A1 (en) * | 2022-10-17 | 2024-04-25 | 青岛海信激光显示股份有限公司 | Projection screen and manufacturing method therefor, and projection system |
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| WO2024082686A1 (en) | 2024-04-25 |
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