Screen and method for manufacturing the same, and mold

Abstract

To provide a screen that has high front luminance, excellent external light control and workability, and achieves an expanded viewing angle, a mold used for manufacturing the screen, and a manufacturing method for the screen.SOLUTION: A screen that is erected to receive and reflect projected light onto a light receiving face includes the light receiving face, wherein the light receiving face includes: a mirror row A, in which a number of mirrors A are arranged in a first direction; and a mirror row B, located in a second direction crossing the first direction, in which a number of mirrors B are arranged in the first direction. On the light receiving face, the mirrors A and the mirrors B are inclined in a same direction.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a screen, a method for manufacturing a screen, and a mold.

Background Art

[0002] In recent years, short-focus projectors with a projection distance of about several tens of centimeters have been put into practical use, enabling large-screen display. In such short-focus projectors, the distance between the light source and an arbitrary point within the screen of the screen varies depending on the location. With a general light source, the reflected light decreases toward the screen edge, so electrical correction is indispensable, and there is a problem of light leakage to the surroundings. Although improvement can be expected by using a laser light source with low diffusivity as the light source, the influence cannot be avoided because the incident angle changes greatly.

[0003] On the other hand, in a large-screen display device, it is also an important issue to expand the viewing angle as well as the front luminance. In a method using a diffusing surface or a diffusing layer, the viewing angle becomes wide, but the front luminance is sacrificed. Therefore, in a screen for a short-focus projector, a Fresnel mirror focused on the light source position is used to ensure the front luminance. As such a Fresnel mirror, for example, a reflective screen has been proposed in which the reflecting surface is processed into a Fresnel mirror shape to improve the front luminance and countermeasures against external light are implemented (see, for example, Patent Document 1). In this proposal, a light source is installed at the focal position of the Fresnel mirror, and the light emitted from the light source is converted into parallel light. As a countermeasure against external light, the non-reflecting surface of the Fresnel mirror is used, and a device is devised so that the light hitting the non-reflecting surface does not return to the front.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

[0005] However, as shown in Figure 1, the proposed Fresnel mirror has a shape in which multiple unit lenses 131 are arranged concentrically around point C, and is therefore usually manufactured by processing in the circumferential direction. With such circumferential processing, it is possible to impart different shapes in the circumferential direction, but it is extremely difficult to impart different shapes in directions other than the circumferential direction. Furthermore, with the proposed Fresnel mirror, it is difficult to achieve both frontal brightness and an expanded horizontal field of view, so as shown in Figure 2, a diffusion layer 141 is provided on the observer side (image source side) of the lens layer 13 and reflective layer 12 to accommodate the expanded field of view. However, when a diffusion layer 141 is provided, the light is diffused twice, once when incident and once when reflected, which reduces the efficiency of light ray utilization and also complicates the layer structure, reducing the freedom of screen design.

[0006] The present invention aims to solve the aforementioned problems in the conventional methodology and achieve the following objectives. Specifically, the present invention aims to provide a screen that has high front brightness, excellent ambient light control and processability, and can achieve an expanded viewing angle, a mold used in the manufacture of the screen, and a method for manufacturing the screen. [Means for solving the problem]

[0007] The means to solve the aforementioned problem are as follows: <1> A screen that is erected and receives and reflects projected light on a light-receiving surface, Having the aforementioned light-receiving surface, The light-receiving surface is A mirror array A in which numerous mirrors A are arranged in a first direction, It comprises a mirror array B located in a second direction intersecting the first direction, in which a number of mirrors B are arranged in the first direction, In the light-receiving surface, mirror A and mirror B are tilted in the same direction. This screen has the following characteristics. <2> At least one of the mirror array A and the mirror array B extends to the vicinity of both ends of the light-receiving surface in the first direction, <1> This is the screen described in [the document]. <3> In the second direction, When the mirror array A is located on one end and the mirror array B is located on the other end opposite to the one end, The inclination of mirror B in the mirror row B is greater than the inclination of mirror A in the mirror row A, <1> from <2> It is the screen described in one of the following. <4> At least one of the mirrors A and B has a mirror surface disposed on the surface of the support, When the light-receiving surface is viewed from the other end in the second direction, the support is visible, <1> from <2> It is the screen described in one of the following. <5> In the first direction, at least one of the mirror row A and the mirror row B has mirrors located at both ends that are inclined toward the ends. When the light-receiving surface is viewed from one end in the first direction, the support is visible, <4> This is the screen described in [the document]. <6> At least one of the mirrors A and B is rectangular, <1> from <5> It is the screen described in one of the following. <7> The mirrors A and B are arranged in a grid pattern, <1> from <6> It is the screen described in one of the following. <8> At least one of the mirrors A and B is a plane mirror, a concave mirror, or a convex mirror. <1> from <7> It is the screen described in one of the following. <9> The surface area of ​​at least one of the mirrors A and B is 300 μm². 2 4mm or more 2 The following is the aforementioned <1> from <8> It is the screen described in one of the following. <10> The above is for short-throw projectors. <1> from <9> It is the screen described in one of the following. <11> The aforementioned <1> from <10> A mold used in the manufacture of a screen as described in any of the following: A transfer surface array A having a number of transfer surfaces A capable of transfer-forming a surface for disposing the mirror A on the surface, in the first direction A transfer surface array B having a number of transfer surfaces B capable of transfer-forming a surface for disposing the mirror B on the surface, in a second direction intersecting the first direction, and having the same The transfer surface A and the transfer surface B are inclined in the same direction This is a mold characterized by this. <12> It is a roll shape, the first direction is the axial direction, and the second direction is the circumferential direction. The mold according to <11>. <13> A method for manufacturing a screen, characterized by including transferring the mold according to any one of <11> to <12> onto the surface of a substrate

Effect of the Invention

[0008] According to the present invention, the above-mentioned various problems in the prior art can be solved, the above-mentioned object can be achieved, a screen with high front luminance, excellent external light control and processability, and capable of realizing an enlarged viewing angle, a mold used for manufacturing the screen, and a method for manufacturing the screen can be provided

Brief Explanation of the Drawings

[0009] [Figure 1] FIG. 1 is a schematic view of a conventional Fresnel mirror's lens layer viewed from the front direction on the back side [Figure 2] FIG. 2 is a schematic cross-sectional view of a conventional Fresnel mirror [Figure 3] FIG. 3 is a schematic view showing an example of the screen of the present invention [Figure 4] FIG. 4 is a schematic diagram for explaining the reflection angle of the screen of the present invention [Figure 5] FIG. 5 is a schematic perspective view showing an example of the screen of the present invention [Figure 6A] FIG. 6A is a schematic perspective view showing an example of front reflection in the screen of the present invention [Figure 6B]Figure 6B is a schematic perspective view showing an example of back reflection in the screen of the present invention. [Figure 7A] Figure 7A is a schematic view showing an example of the arrangement pattern of mirrors in the screen of the present invention. [Figure 7B] Figure 7B is a schematic view showing another example of the arrangement pattern of mirrors in the screen of the present invention. [Figure 8A] Figure 8A is a schematic view showing an example of the planar shape of a mirror in the screen of the present invention. [Figure 8B] Figure 8B is a schematic view showing another example of the planar shape of a mirror in the screen of the present invention. [Figure 8C] Figure 8C is a schematic view showing another example of the planar shape of a mirror in the screen of the present invention. [Figure 8D] Figure 8D is a schematic view showing another example of the planar shape of a mirror in the screen of the present invention. [Figure 8E] Figure 8E is a schematic view showing another example of the planar shape of a mirror in the screen of the present invention. [Figure 8F] Figure 8F is a schematic view showing another example of the planar shape of a mirror in the screen of the present invention. [Figure 8G] Figure 8G is a schematic view showing another example of the planar shape of a mirror in the screen of the present invention. [Figure 8H] Figure 8H is a schematic view showing another example of the planar shape of a mirror in the screen of the present invention. [Figure 9A] Figure 9A is a schematic view showing an example of the cross-sectional shape of a mirror in the screen of the present invention. [Figure 9B] Figure 9B is a schematic view showing another example of the cross-sectional shape of a mirror in the screen of the present invention. [Figure 9C] Figure 9C is a schematic view showing another example of the cross-sectional shape of a mirror in the screen of the present invention. [Figure 10A] Figure 10A is a schematic view showing an example of the side shape of the screen of the present invention. [Figure 10B] Figure 10B is a schematic view showing another example of the side shape of the screen of the present invention. [Figure 10C] Figure 10C is a schematic diagram showing another example of the side shape of the screen of the present invention. [Figure 11] Figure 11 is a schematic perspective view showing an example of a roll-shaped mold according to the present invention. [Modes for carrying out the invention]

[0010] (screen) The screen of the present invention is a screen that is erected to receive and reflect projected light onto a light-receiving surface, and has the light-receiving surface, wherein the light-receiving surface has a mirror row A in which a number of mirrors A are arranged in a first direction, and a mirror row B located in a second direction intersecting the first direction and in which a number of mirrors B are arranged in the first direction, and on the light-receiving surface, the mirrors A and the mirrors B are inclined in the same direction.

[0011] The screen of the present invention is erected and has the function of receiving and reflecting projected light at its light-receiving surface. The aforementioned "screen that receives and reflects projected light onto a light-receiving surface" refers to a so-called "reflective screen." The light projected onto the light-receiving surface is not particularly limited and may be projected from below, from above, or from the left or right. Projecting light from below has the advantage of making the light source easier to install.

[0012] The light is emitted from a light source. The light source is not particularly limited and can be appropriately selected according to the purpose, for example, a lamp or a laser. As the laser, blue, green, and red lasers may be prepared, or yellow, green, and red light may be produced by irradiating a phosphor with a blue laser. In the case of a screen for a short-throw projector, the light source is an image light projection device called a projector that projects image light that constitutes an image toward the screen. There are no particular restrictions on the aforementioned light, and it can be appropriately selected according to the purpose. For example, in the case of a screen for a short-throw projector, it is the image light that constitutes the image emitted from the projector, which is the light source. In the case of a screen for a reflector, it is artificial light such as sunlight or lighting.

[0013] The aforementioned light-receiving surface is not particularly limited as long as it can receive projected light, and can be appropriately selected according to the purpose. For example, in the case of a screen for a short-throw projector, it is the display screen. In the case of a screen for a reflector, it is a normal reflective surface.

[0014] The screen of the present invention comprises a support, a mirror array A in which a number of mirrors A are arranged in a first direction on the support, and a mirror array B located in a second direction intersecting the first direction and in which a number of mirrors B are arranged in the first direction, and further comprises other layers as necessary. From the viewpoint of machinability, it is preferable that the numerous mirrors A are arranged in a straight line. Furthermore, from the viewpoint of machinability, it is preferable that the first direction and the second direction are orthogonal. Moreover, from the viewpoint of machinability, it is preferable that the numerous mirrors B are arranged in a straight line in the first direction.

[0015] Here, the projection apparatus including the screen of the present invention comprises, as shown in Figure 3, an upright screen 1 and a projector 20 as a light source for projecting image light onto the screen 1. The projector 20 is a short-throw projector and is installed below the screen 1, for example, several tens of centimeters away from the light-receiving surface 2 of the screen 1. For example, in an example where a 100-inch equivalent screen is projected from below, the screen width L is 2,154 mm, the screen height H is 1,346 mm, the distance D between the light source and the light-receiving surface is 300 mm, and the distance DV between the light source and the screen is 300 mm.

[0016] Figure 5 is a schematic perspective view showing an example of the screen of the present invention. In this Figure 5, the screen 1 has a support 4 on which a number of mirrors 3 (mirror A, mirror B) are arranged to form a light-receiving surface 2. In Figure 5, 5 is a first exposed area where the support 4 is exposed when viewed from above the screen, and 6 is a second exposed area where the support 4 is exposed when viewed from the side of the screen. 7 is a light source.

[0017] <Mirror A, Mirror B> Mirrors A and B are arranged in large numbers on the surface of the support. There are no particular restrictions on the shape, size, number, arrangement, structure, etc., of mirrors A and B, and they can be appropriately selected according to the purpose. There are no particular restrictions on the shape of at least one of the planes of mirror A and mirror B, and they can be appropriately selected according to the purpose. Examples include polygons such as circles, ellipses, triangles, quadrilaterals, pentagons, hexagons, heptagons, and octagons, rectangles, squares, rhombuses, trapezoids, and random irregular shapes. These may be used individually or in combination of two or more. Among these, rectangles are preferred from the viewpoint of ease of machining. Specifically, the mirrors A and B can be planar shapes as shown in Figures 8A to 8H, and they may be used in combination as appropriate.

[0018] There are no particular restrictions on the number of mirrors A in mirror row A and mirrors B in mirror row B, and they can be appropriately selected according to the size of the screen, etc., but 100 or more is preferred, 1,000 or more is more preferred, 2,000 or more is even more preferred, and 5,000 or more is particularly preferred. There are no particular restrictions on the upper limit of the number of mirrors A in mirror row A and mirrors B in mirror row B, and they can be appropriately selected according to the size of the screen, etc., but 20,000 or less is preferred.

[0019] At least one of the mirrors A and B is preferably a flat mirror as shown in Figure 9A, from the viewpoint of processability. A flat mirror with a flat surface makes it easy to impart a shape that has a diffusion effect to the surface. Furthermore, since the processing direction of the shape and the direction of the diffusion shape are perpendicular or parallel, processing is easy. In addition to the plane mirror shown in Figure 9A, a convex mirror as shown in Figure 9B or a concave mirror as shown in Figure 9C may also be used. The convex mirror (semi-circular shape) shown in Figure 9B is preferable from the viewpoint of being able to diffuse light in a characteristic way in the horizontal direction.

[0020] At least one of the mirrors A and B has a reflective layer 9 on its outermost surface, as shown in Figures 9A to 9C. The reflective layer 9 is formed from a highly reflective material by methods such as electroplating, electroless plating, coating or vapor deposition, sputtering, or transferring a metal foil. As the aforementioned highly reflective material, a material with high reflectivity in the visible light range is used, such as aluminum, silver, gold, platinum, bismuth, nickel, tin, or alloys thereof. Furthermore, the screen of the present invention does not require a reflective layer to be formed on surfaces other than those primarily used as reflective surfaces. By having surfaces without a reflective layer in this way, the screen can transmit incident light other than the light to be projected, thereby suppressing light scattering caused by ambient light.

[0021] The surface area of ​​at least one of the mirrors A and B is 300 μm². 2 4mm or more 2 The following is preferable: 0.003 mm 2 0.05mm or more 2 The following are preferable. The surface area can be measured, for example, by observing mirrors A and B with an optical microscope and determining their dimensions.

[0022] As shown in Figure 6A, the numerous mirrors A and B are placed on the outermost surface of the screen 1 to improve front brightness (front reflection). On the other hand, as shown in Figure 6B, the numerous mirrors A and B can also improve front brightness by being placed on the back surface via a translucent support 4 formed from a resin that is transparent to the wavelength of light to be transmitted in order to protect the surface shape of the screen 1 (back reflection). In the case of back reflection shown in Figure 6B, the support 4 only needs to be optically transparent to the projected image, and may be colored to absorb light that should not be reflected towards the viewer. A visible light transmittance of 90% or more is preferable. In the case of front reflection shown in Figure 6A, the support 4 does not need to transmit light, so transparency is not a requirement, and it may be opaque or colored.

[0023] As shown in Figure 3, the first direction in which the numerous mirrors A and B are arranged in a straight line refers to the width direction L of the screen 1. The second direction perpendicular to the first direction refers to the height direction H of the screen 1. It is preferable that "Mirror A" in "Mirror Row A" and "Mirror B" in "Mirror Row B" are arranged in a grid pattern as shown in Figure 7A, but it is also possible that they are arranged linearly in the "first direction" (screen width direction) but not linearly in the "second direction" (screen height direction), as shown in Figure 7B. The mirror array A and the mirror array B may be arranged adjacent to each other, or they may be arranged spaced apart with a predetermined interval between them. There are no particular restrictions on the number of mirror rows in the screen, and they can be appropriately selected according to the size of the screen, but 50 or more is preferred, 100 or more is more preferred, 500 or more is even more preferred, and 1,000 or more is particularly preferred. There is no particular upper limit on the number of mirror rows on the screen, and it can be appropriately selected depending on the size of the screen, but it is preferable to keep it at 20,000 or less.

[0024] The screen of the present invention is composed of a collection of numerous mirrors A and numerous mirrors B, and on the light-receiving surface, mirrors A and B are tilted in the same direction. As a result, a screen is formed having one large reflective surface set at an appropriate angle, so that light emitted from a light source at various incident angles can be reflected with high brightness in front of the viewer. Here, "mirror A and mirror B are inclined in the same direction" means that mirror A and mirror B are inclined at a predetermined angle in the same direction, that is, that mirror A and mirror B are inclined at a predetermined angle in the horizontal and vertical directions. The fact that "mirror A and mirror B are tilted in the same direction" can be confirmed by at least one of the following methods: confirming that when parallel light rays are incident on the screen from the front of the screen, they are focused at a predetermined focal position (i.e., the light source position); and confirming that when a beam of light ray placed at the light source position is shone on the screen, the reflected light is observed only in front of the screen under the condition of a narrow light reception angle across the entire screen. As shown in Figure 4, when screen 1 reflects light rays incident from below at an angle α to the front, the angle of inclination of mirrors A and B is in the range of 67.5 degrees to 51 degrees in the vertical direction, since angle α is in the range of 45 degrees to 78 degrees. Also, in the horizontal direction, angle α is in the range of 0 degrees to 74 degrees, so the angle of inclination of β is in the range of 90 degrees to 53 degrees.

[0025] In the present invention, the relative positions of the light source and the light-receiving surface are fixed, and once the positions of the numerous mirrors A and B within the light-receiving surface are determined, the horizontal and vertical angles of incidence of the incident light are determined. Once the angles of incidence are determined, the angle of the surface that reflects the light rays forward is determined. By dividing the screen surface using orthogonal coordinates and determining the angles of the reflective surfaces of the numerous mirrors A and B, a screen is obtained having an aggregate of numerous mirrors A and B as the reflective surface from the light source.

[0026] <Support> There are no particular restrictions on the material, color, shape, size, or structure of the support, and it can be selected as appropriate according to the purpose. Examples of materials for the support include (meth)acrylic resin, polycarbonate resin, polystyrene resin, olefin resin, cellulose resin, tetraacetylcellulose (TAC), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polycarbonate (PC), polyarylate (PA), polyetherimide (PEI), methyl methacrylate-styrene (MS) resin, methyl methacrylate-butadiene-styrene (MBS) resin, and polyethylene naphthalate (PEN) resin. These may be used individually or in combination of two or more. The material of the support can be not only a hard material such as a curable resin, but also a soft material. If a soft material is used as the screen material, a flexible screen can be made.

[0027] There are no particular restrictions on the color of the support material, and it can be appropriately selected depending on the purpose. Examples include colorless and transparent, colored and transparent, and colored and opaque. Among these, colorless and transparent is preferred.

[0028] The shape and size of the support can be appropriately selected according to the shape and size of the screen, etc. The average thickness of the support is preferably 25 μm or more and 10,000 μm or less, and more preferably 50 μm or more and 500 μm or less. When used as a flexible screen, the average thickness of the support is preferably 25 μm or more and 200 μm or less.

[0029] <Other layers> Other layers may include, as needed, a protective layer, an anti-reflective layer, a light-diffusing layer, a light-absorbing layer, and so on.

[0030] In one embodiment of the present invention, at least one of the mirror array A and the mirror array B extends to the vicinity of both ends of the light-receiving surface in the first direction. That is, it is preferable that at least one of the mirror array A and the mirror array B is present across the entire width direction (first direction) of the screen of the light-receiving surface, as this allows the entire surface of the light-receiving surface to reflect projected light and improves reflection efficiency.

[0031] In one embodiment of the present invention, when, in a second direction, the mirror row A is located on one end and the mirror row B is located on the other end opposite to the one end, it is preferable that the inclination of mirror B in mirror row B is greater than the inclination of mirror A in mirror row A. That is, in the height direction of the screen (second direction), it is preferable that the inclination of the mirrors in mirror row B (upper side) is greater than that of mirror row A (lower side). According to this embodiment, the inclination of the mirror array increases towards the upper part of the screen in the height direction, so the front brightness can be increased.

[0032] In one embodiment of the present invention, at least one of the mirrors A and B has a reflective surface on the surface of a support, and the support is visible when the light-receiving surface is viewed from the other end in the second direction. According to this embodiment, when the screen is erected, as a result of the mirrors being inclined downward, when the light-receiving surface is viewed from above the screen, the first exposed portion of the support absorbs ambient light from above, thereby suppressing light scattering. For example, as shown in Figure 5, when the light-receiving surface 2 is viewed from the other end of the screen 1 in the height direction (second direction), the support 4 is visible through the first exposed portion 5. Since the mirror 3 is not placed in the first exposed portion 5, it can absorb ambient light and suppress light scattering.

[0033] In one embodiment of the present invention, in a first direction, at least one of the mirror row A and the mirror row B has mirrors located at both ends that are inclined toward the ends, and the support is visible when the light-receiving surface is viewed from one end in the first direction. For example, as shown in Figure 10C, if at least one of the mirror row A and the mirror row B has mirrors located at both ends that are inclined toward the ends to form a convex light-receiving surface 2, the field of view can be expanded compared to the flat light-receiving surface 2 in Figure 10A and the concave light-receiving surface 2 in Figure 10B. Furthermore, when the screen is erected, the mirrors located at both ends are inclined toward the ends, which allows for an expanded viewing angle. Additionally, when viewing the light-receiving surface from the side of the screen, the second exposed portion where the support is exposed absorbs ambient light, suppressing light scattering from the side. For example, as shown in Figure 5, when the light-receiving surface 2 is viewed from the other end in the width direction (first direction) of the screen, the support 4 is visible due to the second exposed portion 6. Since there are no mirrors in the second exposed portion 6, ambient light can be absorbed, suppressing light scattering.

[0034] The screen of the present invention is preferably for use with a short-throw projector. Since the horizontal distance from the light-emitting surface of the light source to the observer-side surface of the screen can be shortened, it does not require a large installation space and is highly convenient.

[0035] (Mold) The mold of the present invention is a mold used in the manufacture of the screen of the present invention, and comprises a row of transfer surfaces A having a large number of transfer surfaces A in the first direction on which a surface for arranging the mirror A on the surface can be transferred and formed, The device has a series of transfer surfaces B, each having a large number of transfer surfaces B arranged in a second direction intersecting the first direction, on which a surface for arranging the mirror B on the surface can be transferred and formed. The transfer surface A and the transfer surface B are inclined in the same direction. The mirror A in the screen of the present invention is formed by the transfer surface A. The mirror B in the screen of the present invention is formed by the transfer surface B. From the viewpoint of processability, the transfer surface row A is preferably arranged in a straight line. Furthermore, from the viewpoint of processability, the first direction and the second direction are preferably orthogonal. Moreover, from the viewpoint of processability, the transfer surface row B is preferably arranged in a straight line in the first direction.

[0036] The transfer surface A and the transfer surface B can be manufactured, for example, by cutting tools (bites), laser irradiation, ion milling, etc. Among these, cutting tools (bites) are preferred. Examples of materials for the cutting tool include diamond, cemented carbide, high-speed tool steel, and cubic boron nitride (CBN).

[0037] The screen produced by the mold of the present invention is composed of planes divided horizontally and vertically from a rectangular screen, making it easy to process the original plate that forms the basis of the screen shape.

[0038] There are no particular restrictions on the material, shape, size, etc., of the aforementioned mold, and they can be appropriately selected according to the purpose. Examples of materials for the mold include iron, aluminum, aluminum alloy, and stainless steel. It is preferable to form a surface layer on the surface of the mold consisting of nickel-phosphorus (Ni-P) plating or copper (Cu) plating. There are no particular restrictions on the size of the mold, and it can be appropriately selected according to the size of the screen to be manufactured. Examples of the mold shape include flat molds, stampers, and roll molds. Among these, it is preferable that the mold is roll-shaped, with the first direction being the axial direction and the second direction being the circumferential direction. By using a roll-shaped mold, high-quality screens can be manufactured with high mass productivity using a roll-to-roll method.

[0039] Here, Figure 11 is a schematic perspective view showing an example of a roll-shaped mold. The roll-shaped mold 101 in Figure 11 has numerous transfer surfaces A and numerous transfer surfaces B on its surface, although these are not shown. In Figure 11, 102 is the roll base, 103 is the surface layer, and 104 is the shaft.

[0040] (How to manufacture screens) The present invention's method for manufacturing a screen includes a transfer step, and further includes other steps as necessary.

[0041] <Transfer process> The transfer process is a process of transferring the mold of the present invention onto the surface of a substrate. The transfer to the substrate surface may be done one sheet at a time, or it may be done by continuous molding using a roll-shaped mold. There are no particular restrictions on the material, shape, size, structure, etc., of the aforementioned base material, and it can be appropriately selected according to the purpose. The material of the substrate can be the same as the material of the support in the screen, and examples include (meth)acrylic resin, polycarbonate resin, polystyrene resin, olefin resin, cellulose resin, tetraacetylcellulose (TAC), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polycarbonate (PC), polyarylate (PA), polyetherimide (PEI), methyl methacrylate-styrene (MS) resin, methyl methacrylate-butadiene-styrene (MBS) resin, polyethylene naphthalate (PEN) resin, etc. These may be used individually or in combination of two or more. There are no particular restrictions on the material of the base material, and it can be appropriately selected according to the purpose, but for example, an ultraviolet curing resin or a thermosetting resin with low processing shrinkage is preferred.

[0042] Examples of the substrate shape include sheet-like and flat plate-like shapes. There are no particular restrictions on the size of the substrate, and it can be appropriately selected according to the size of the screen to be manufactured. There are no particular restrictions on the structure of the substrate, and it can be appropriately selected according to the purpose; for example, it may be a single-layer structure or a multi-layer structure.

[0043] <Other processes> Other processes are not particularly limited and can be selected as appropriate depending on the purpose, and examples include curing processes, conveying processes, and drying processes.

[0044] Although embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the invention. [Explanation of symbols]

[0045] 1 screen 2 Photosensitive surface 3 mirror 4 Support 5. First exposed area 6. Second exposed area 7 light source 8 mirror row 9 Reflective layer 20 Projectors

Claims

1. A screen that is erected and receives and reflects projected light on a light-receiving surface, Having the aforementioned light-receiving surface, The light-receiving surface is A mirror array A in which a number of mirrors A are arranged in a first direction which is the width direction of the screen, It comprises a mirror array B which is located in a second direction that intersects the first direction and is the height direction of the screen, and in which a number of mirrors B are arranged in the first direction, In the light-receiving surface, mirror A and mirror B are inclined in the same direction in the second direction. The numerous mirrors A and B are inclined such that the entire light-receiving surface of the screen in the first direction is convex, protruding in the direction of incidence of the projected light. A screen characterized in that, among the numerous mirrors A, the position of one mirror A in the second direction is aligned with the mirror closest to the direction having the component in the first direction, and among the numerous mirrors B, the position of one mirror B in the second direction is aligned with the mirror closest to the direction having the component in the first direction.

2. A screen that is erected and receives and reflects projected light on a light-receiving surface, Having the aforementioned light-receiving surface, The light-receiving surface is A mirror array A in which a number of mirrors A are arranged in a first direction which is the width direction of the screen, It comprises a mirror array B which is located in a second direction that intersects the first direction and is the height direction of the screen, and in which a number of mirrors B are arranged in the first direction, In the light-receiving surface, mirror A and mirror B are inclined in the same direction in the second direction. The numerous mirrors A and B are inclined such that the entire light-receiving surface of the screen in the first direction is concave, recessed in the direction of incidence of the projected light. A screen characterized in that, among the numerous mirrors A, the position of one mirror A in the second direction is aligned with the mirror closest to the direction having the component in the first direction, and among the numerous mirrors B, the position of one mirror B in the second direction is aligned with the mirror closest to the direction having the component in the first direction.

3. The screen according to any one of claims 1 to 2, wherein at least one of the mirror array A and the mirror array B extends to the vicinity of both ends of the light-receiving surface in the first direction.

4. In the second direction, When the mirror array A is located on one end and the mirror array B is located on the other end opposite to the one end, The screen according to any one of claims 1 to 2, wherein the inclination of mirror B in the mirror row B is greater than the inclination of mirror A in the mirror row A.

5. At least one of the mirrors A and B has a mirror surface disposed on the surface of the support, The screen according to any one of claims 1 to 2, wherein the support is visible when the light-receiving surface is viewed from the other end in the second direction.

6. The screen according to any one of claims 1 to 2, wherein at least one of the mirror A and the mirror B is rectangular.

7. The screen according to any one of claims 1 to 2, wherein the mirrors A and B are arranged in a grid pattern.

8. The screen according to any one of claims 1 to 2, wherein at least one of the mirrors A and B is a plane mirror, a concave mirror, or a convex mirror.

9. The surface area of ​​at least one of the mirrors A and B is 300 μm². ２ 4mm or more ２ The screen according to any one of claims 1 to 2, which is as follows:

10. A screen according to any one of claims 1 to 2, for use with a short-throw projector.

11. A mold used in the manufacture of a screen according to any one of claims 1 to 2, A transfer surface array A having a large number of transfer surfaces A in the first direction on which a surface for arranging the mirror A on its surface can be transferred and formed, The device has a series of transfer surfaces B, which have a large number of transfer surfaces B in the second direction, on which a surface for positioning the mirror B on the surface can be transferred and formed, A mold characterized in that the transfer surface A and the transfer surface B are inclined in the same direction.

12. The mold according to claim 11, wherein the mold is roll-shaped, the first direction is axial, and the second direction is circumferential.

13. A method for manufacturing a screen, characterized by including transferring the mold described in claim 11 to the surface of a substrate.

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