JP2007057635A - Reflection type screen and its forming method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a reflection type screen to be wound up and housed when unused while remarkably improving visibility of an image itself by suppressing reflection of extraneous light and background light as much as possible. <P>SOLUTION: The reflection type screen for projecting an image of a projector or the like is constituted by forming an antiglare layer 5, which has a light transmissive satin-finished rough surface made of an ultraviolet ray curing resin on a front surface of a viewing angle limiting panel 1 constituted by forming a light shielding wall 3 on a transparent plate in a stripe shape, and a reflecting layer 2 made of a nylon resin, a urethane resin or the like on its back surface. The ultraviolet ray curing resin is applied on the front face of the viewing angle limiting panel 1 and then is hardened by irradiation with UV ray while extending the ultraviolet ray curing resin by press-contact with a transparent plate material 7 having the satin-finished rough surface to form the antiglare layer 5. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a reflective screen for projecting an image of a projector or the like and a molding method thereof.

  The simplest form of a screen for projecting an image of a projector or the like is a cloth curtain obtained by applying a reflective coating to a white cloth (for example, Patent Document 1). However, when the surrounding environment used as a projector is bright, extraneous light such as natural light and room light other than the projected light is incident on the screen, so that the projected image is unclear and difficult to see. Contrast is lowered and images and characters are difficult to see.

  In this regard, it is conceivable to use a louver panel capable of limiting the viewing angle on the screen as a means for sharpening the projected image by blocking extraneous light other than the projected light as much as possible. This louver panel has a configuration formed by means as disclosed in, for example, Patent Document 2. That is, non-light-transmitting printing is performed on one side of a transparent plate material, a large number of the transparent plate materials are laminated in a block shape, and the blocks are sliced in a direction perpendicular to each material surface (direction along the lamination direction). By doing so, a panel shape is obtained.

  As a result of slicing the louver panel, the light shielding walls are formed in a stripe shape by the non-light-transmitting printing layer, so that the light shielding walls block external light other than the projection light as much as possible.

  To explain in detail, non-light-transmissive printing is applied to one side of a transparent plate material with a thickness of, for example, about 100 μm made of resin such as vinyl chloride, acrylic, urethane, silicon, and polyacetate. By laminating and heat-compressing to form a block, and slicing the block in the above-described form, it is formed into a thin plate having a thickness of, for example, 200 μm.

  In the viewing angle limiting panel 1 which is a thin plate-like transparent louver panel having a thickness of 200 μm shown in FIG. 1, the light shielding walls 2 are formed in stripes by a non-light-transmitting printed layer. The thickness d of the viewing angle limiting panel 1 is about 200 μm, whereas the distance d ′ between the light shielding walls 2 is about 100 μm, which is the thickness d ′ of the transparent plate material. FIGS. 1 and 2 show typical configurations when used as a reflective screen. On the rear surface of the viewing angle limiting panel 1 opposite to the viewer A and the projector P, a polyethylene terephthalate resin, The reflective layer 3 having a thickness of about 100 μm made of polycarbonate resin or the like is applied.

  Here, the projection light b from the projector P that is incident on the virtual normal a up to an angle of 30 degrees, that is, a total angle of 60 degrees, reaches the reflection layer 3 and is reflected here to be viewed by the observer A. it can. However, the extraneous light c incident from an angle exceeding 30 degrees with respect to the virtual normal line a is blocked by the light shielding wall 2 and absorbed, and therefore does not reach the reflection layer 3 and does not reflect in the direction of the viewer A. . Therefore, the viewer A can visually recognize the image clearly without being affected by the external light c.

By the way, in order to further improve the visibility, the surface on the viewer A side of the viewing angle limiting panel 1 is formed by forming a so-called pear-like rough surface with fine irregularities while ensuring light transmittance, and reflecting. It is necessary to configure with a method of irregularly reflecting light (anti-glare method, AG method). The antiglare layer diffuses and diffuses background light, blurs the outline of the reflected background image of the viewer A, and makes it easy to visually recognize the image. It is formed by attaching an ultraviolet curable resin to the surface. However, in this configuration, when the thickness d of the viewing angle limiting panel 1 is about 200 μm, the thickness of the reflective layer 3 is about 100 μm, and the thickness of the anti-glare layer is about 200 μm, the thickness of the entire screen is about 500 μm. It becomes inconvenient to handle when not in use.
JP 2003-207852 A Japanese Patent Publication No.58-47681 JP-A-8-50332

  As in the invention disclosed in Patent Document 1, if it is made of cloth curtain, it can be wound and stored when not in use. However, since the invention disclosed in Patent Document 2 is in the form of a panel, it is wound. It is impossible to store it. Further, Patent Document 3 discloses an invention of a reflective screen having a multilayer structure, and there is a description that it can be wound and housed. However, since it is a configuration for taking a wide viewing angle, Patent Document 2 As in the panel of the disclosed invention, it is questionable whether or not the viewer A can clearly see the image without being affected by the extraneous light c.

  Therefore, the present invention was developed to eliminate the above-described conventional disadvantages, and while suppressing reflection of external light and background light as much as possible, while greatly improving the visibility of the image itself, It is intended to enable winding and storage when not in use.

  In order to solve the above problems, the reflective screen of the present invention is a reflective screen for projecting an image of a projector or the like, and is UV-cured on the front surface of a viewing angle limiting panel in which a light shielding wall is formed in a stripe shape on a transparent plate. An anti-glare layer having a rough surface of pear ground that can transmit light with resin is formed, and a reflection layer made of nylon resin, urethane resin, or the like is formed on the rear surface.

  Further, in the reflective screen according to claim 1, the transparent surface is coated with an ultraviolet curable resin on the front surface of the viewing angle limiting panel in which the light shielding walls are formed in a stripe shape on the transparent plate, and the surface is a rough surface. The structure is characterized in that an antiglare layer is formed by pressing a plate material and irradiating and curing ultraviolet rays while spreading the ultraviolet curable resin.

  According to the first aspect of the invention described above, since the entrance / reflection of extraneous light is suppressed by the light shielding walls formed in a stripe shape, the observer can view the image very clearly.

  The anti-glare layer that diffuses and diffuses the background light, blurs the outline of the reflected background image and makes it easy to see the image can be made thinner with an ultraviolet curable resin, and the reflection layer is made of nylon resin. Because it is made of urethane resin, etc., it can be made thin as well, so it can be made very thin as a screen panel, and it will not be permanently deformed or bent even when wound, and it can be used when not in use. It can be wound and stored. In particular, the nylon resin or urethane resin that forms the reflective layer is soft and excellent in wear resistance and scratch resistance, and is not deteriorated as a product by repeated winding.

  In addition, according to the molding method of claim 2, the rough surface of the pear ground surface of the transparent plate is pressure-bonded to the front surface of the viewing angle limiting panel with the UV curable resin interposed therebetween, so that the rough surface of the pear ground surface is transferred. Thus, an ultraviolet curable resin can be formed as an antiglare layer on the front surface of the viewing angle limiting panel very easily and sufficiently thinly as a hard coat.

  In FIG. 2, the viewing angle limiting panel 1 is made of a resin such as vinyl chloride, acrylic, silicon, polyacetate, etc., is a thin plate having a thickness of 200 μm (d interval), and 100 μm by a non-light-transmissive printing layer. The light shielding walls 2 are formed in a stripe shape with a width of (d ′ interval). The reflective layer 3 is applied to the rear surface of the viewing angle limiting panel 1 by sticking a film of about 50 to 100 μm made of white or silver nylon resin, urethane resin or the like. In order to attach the film to be the reflective layer 3, for example, the adhesive layer 4 made of an ultraviolet curable resin is used. Further, on the front surface of the viewing angle limiting panel 1, an antiglare layer 5 having a thickness of about 10 μm, which is a rough surface of pear satin that can transmit light with an ultraviolet curable resin, is formed. Therefore, the screen of the present invention can be formed into a thin one having a thickness of about 300 μm, and can sufficiently withstand repeated winding and storing.

  FIG. 3 shows an example of an apparatus for forming the antiglare layer 5 on the front surface of the viewing angle limiting panel 1. The viewing angle limiting panel 1 is placed on a predetermined base plate 6. A UV curable resin is applied linearly and at almost equal intervals (not shown) on the front surface, and a transparent plate 7 made of a glass plate is disposed on the upper surface. In this case, the surface of the transparent plate 7 facing the front surface of the viewing angle limiting panel 1 is a pear ground surface (not shown).

  As described above, in a state where the viewing angle limiting panel 1 is sandwiched between the base plate 6 and the transparent plate 7, the transparent plate 7 is pressure-bonded to the front surface of the viewing angle limiting panel 1 by the rolling roller 8, and the UV curable resin is applied to the viewing angle limiting panel. 1 is stretched to the front surface of 1 and cured by irradiating ultraviolet rays through the transparent plate 7 by the ultraviolet irradiation device 9. Since the rough surface of the pear surface of the transparent plate 7 is opposed to the front surface of the viewing angle limiting panel 1, the anti-glare layer 5 is obtained as the resin that has been spread and stretched and hardened also becomes a rough surface of the pear surface. Become. The thickness of the anti-glare layer 5 can be adjusted by the rolling degree of the rolling roller 8 and the coating amount of the ultraviolet curable resin.

It is explanatory drawing of a prior art. It is explanatory drawing of this invention. It is explanatory drawing which shows the formation apparatus of an anti-glare layer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Viewing angle restriction panel 2 Light-shielding wall 3 Reflective layer 4 Adhesive layer 5 Anti-glare layer 6 Base plate 7 Transparent plate material 8 Rolling roller 9 Ultraviolet irradiation device

Claims (2)

  A reflection type screen for projecting an image of a projector or the like, and a pear ground surface that can transmit light with an ultraviolet curable resin on the front surface of a viewing angle limiting panel (1) in which a light shielding wall (3) is formed in a stripe shape on a transparent plate A reflection type screen characterized in that an antiglare layer (5) is formed and a reflection layer (2) made of nylon resin, urethane resin or the like is formed on the rear surface. 2. The reflective screen according to claim 1, wherein an ultraviolet curable resin is applied to the front surface of the viewing angle limiting panel (1) in which a light shielding wall (3) is formed in a stripe shape on a transparent plate, and the surface is roughened. A method for forming a reflection type screen, comprising: forming an anti-glare layer (5) by pressing and curing a transparent plate (7) having a surface to spread an ultraviolet curable resin and irradiating with ultraviolet rays.

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