Abstract: A film for a liquid crystal display comprising a fatty acid cellulose ester film having an acetyl group and a propionyl group is disclosed. Sum of degree of acetyl substitution (DSac) and degree of propionyl substitution (DSpr) of the fatty acid cellulose ester film of the film is 2.8 or less, and a retardation value (Rt value) in the thickness direction define by Formula 1 is 60 to 300 nm.

Abstract: The present invention relates to a diffusion sheet for use in a transmission-type screen comprising a main diffusion layer having an incidence surface and an emergence surface which are parallel to each other, the main diffusion layer diffusing a light, which is substantially perpendicularly incident on the incidence surface, in a diffusion direction to be emitted from the emergence surface. A plurality of groove channels each having a substantially V-shaped cross-section are disposed in parallel to one another on the emergence surface of the main diffusion layer, and each groove channel are formed by two planes, curved surfaces, or bent planes which are joined to each other in the main diffusion layer. A region sandwiched between the adjacent two groove channels provides a rib with a substantially trapezoidal cross-section, while the planes, curved surfaces, or bent planes which form each groove channel provide side surfaces of the rib. The light substantially.

Abstract: The present invention provides a lens sheet capable of preventing reflection of extraneous light without decreasing extraneous light absorption, having extraneous light absorbers that can be readily formed by printing and are scarcely stained. The present invention also provides a rear projection screen including such a lens sheet. A rear projection screen 10 is composed of a Fresnel lens sheet 11 and a lenticular lens sheet 12 placed on the viewing side of the Fresnel lens sheet 11. The lenticular lens sheet 12 has lenses 121 formed on those portions of the light-emergent-side surface of the sheet-shaped substrate part 12a through which light converged by lenses 125 pass, and extraneous light absorbers 122 formed on those portions of the light-emergent-side surface of the sheet-shaped substrate part 12a through which light converged by lenses 125 does not pass.

Abstract: A transmission screen sheet which is given a large number of lens-like forms on the surface like ridges and has a thickness of 0.1 to 2.0 mm, wherein (i) the sheet is formed from a thermoplastic resin whose inclination (W) obtained from the relationship between melt viscosity (Y) and load (X) satisfies the following expression (1) when the melt viscosity is in the range of 102 to 103 Pa.

Abstract: A film for a liquid crystal display comprising a fatty acid celluose ester film having an acetyl group and a propionyl group is disclosed. Sum of degree of acetyl substitution (DSac) and degree of propionyl substitution (DSpr) of the fatty acid celluose ester film of the film is 2.8 or less, and a retardation value (Rt value) in the thickness direction defined by Formula 1 is 60 to 300 nm.

Abstract: A film for a liquid crystal display comprising a fatty acid cellulose ester film having an acetyl group and a propionyl group is disclosed. Sum of degree of acetyl substitution (DSac) and degree of propionyl substitution (DSpr) of the fatty acid cellulose ester film of the film is 2.8 or less, and a retardation value (Rt value) in the thickness direction defined by Formula 1 is 60 to 300 nm.

Abstract: A Fresnel lens base sheet is provided which is suitable for the formation of a lens layer of an ultraviolet-cured resin and has excellent impact resistance and environmental resistance. The Fresnel lens base sheet comprises a specific rubber-modified styrene resin comprising a rubber-like elastic material as dispersed particles and a copolymer of a styrene monomer with an acrylic (methacrylic) ester monomer as a continuous phase.

Abstract: A film for a liquid crystal display comprising a fatty acid cellulose ester film having an acetyl group and a propionyl group is disclosed. Sum of degree of acetyl substitution (DSac) and degree of propionyl substitution (DSpr) of the fatty acid cellulose ester film of the film is 2.8 or less, and a retardation value (Rt value) in the thickness direction defined by Formula 1 is 60 to 300 nm.

Abstract: A rear projection screen including a Fresnel lens sheet arranged on the projection side, and a lenticular lens sheet arranged on the observation side. The Fresnel lens sheet has a lenticular lens for vertical diffusion on its light-entering side. The lenticular lens for vertical diffusion contains a plurality of convex lenses that extend horizontally, and these plural convex lenses are arranged with a constant pitch. Further, the diffusion angle of the lenticular lens for vertical diffusion continuously increases, and, at the same time, the direction of diffusion is gradually inclined to the central part side as the distance from the central part toward each of the edges on the screen surface increases. The diffusion properties (the angle and direction of diffusion) of the lenticular lens thus continuously vary between the central part and edges of the screen surface.

Abstract: A film for a liquid crystal display comprising a fatty acid cellulose ester film having an acetyl group and a propionyl group is disclosed. Sum of degree of acetyl substitution (DSac) and degree of propionyl substitution (DSpr) of the fatty acid cellulose ester film of the film is 2.8 or less, and a retardation value (Rt value) in the thickness direction defined by Formula 1 is 60 to 300 nm.

Abstract: A Fresnel lens sheet comprises a Fresnel lens on one surface thereof, wherein respective unit surfaces constructing the Fresnel lens sheet have rough surfaces. Since it has a rough surface, it enables suppressing the occurrence of moire, when making up a screen. The other Fresnel lens sheet comprises a Fresnel lens on one surface thereof, and a fly-eye lens or prisms as a regular concavities and convexities configuration for suppressing regular reflection on the surface thereof on a side opposite to the side having the Fresnel lens formed thereon. Since it has on its rear surface a fly-eye lens or a prism, it enables suppressing the occurrence of ghost image.

Abstract: A film for a liquid crystal display comprising a fatty acid cellulose ester film having an acetyl group and a propionyl group is disclosed. The sum of degree of acetyl substitution (DSac) and degree of propionyl substitution (DSpr) of the fatty acid cellulose ester film of the film is 2.8 of less, and a retardation value (Rt value) in the thickness direction defined by Formula 1 is 60 to 300 nm.

Abstract: A Fresnel lens base sheet is provided which is suitable for the formation of a lens layer of an ultraviolet-cured resin and has excellent impact resistance and environmental resistance. The Fresnel lens base sheet comprises a specific rubber-modified styrene resin comprising a rubber-like elastic material as dispersed particles and a copolymer of a styrene monomer with an acrylic (methacrylic) ester monomer as a continuous phase.

Abstract: A position information acquiring system to allow a user to access a private network and to acquire position information of a communicating terminal, wherein the private network comprises a user information server provided with a user-by-user telephone directory database to which the user sets up public information to release the position information of the communicating terminal, and configured to search the user-by-user telephone directory database to check the availability to release the position information when the user requests to acquire the position information of the portable communication terminal, and a terminal position information management server to acquire the position information of the portable communication terminal and then to send it to the user information server when receiving a notice from the user information server that the position information should be released.

Abstract: A system which uses a server to distribute an application to a client. The server includes an application storage section, an application request acceptance section, an application generation section, and an application transmission section. The application storage section has a link information table storing link information for linking a module group as an executable object for each platform. The application request acceptance section accepts a request to download an application from the client. The application generation section references a link information table according to a platform type included in the download request and generates an executable object for the application. The application transmission section transmits the executable object to the client.

Abstract: A rear projection screen 10 comprises a Fresnel lens sheet 11 arranged on the projection side, and a lenticular lens sheet 12 arranged on the observation side. The Fresnel lens sheet 11 has a lenticular lens 11a for vertical diffusion on its light-entering side. The lenticular lens 11a for vertical diffusion contains a plurality of convex lenses which extend horizontally, and these plural convex lenses are arranged with a constant pitch. Further, the diffusion angle of the lenticular lens 11a for vertical diffusion continuously increases, and, at the same time, the direction of diffusion is gradually inclined to the central part side as the distance from the central part toward the edge side on the screen surface increases. The diffusion properties (the angle and direction of diffusion) of the lenticular lens 11a thus continuously vary between the central part and edge of the screen surface.

Abstract: A fluorine-containing copolymer characterized by comprising tetrafluoroethylene, vinyl fluoride or vinyl chloride and a polymerizable compound other than the above, and a vulcanizable composition comprising the fluorine-containing copolymer, a vulcanizing agent, an acid-receiving agent and a vulcanization accelerator.

Abstract: A rear projection screen including a Fresnel lens sheet arranged on the projection side, and a lenticular lens sheet arranged on the observation side. The Fresnel lens sheet has a lenticular lens for vertical diffusion on its light-entering side. The lenticular lens for vertical diffusion containing a plurality of convex lenses that extend horizontally, and these plural convex lenses are arranged with a constant pitch. Further, the diffusion angle of the lenticular lens for vertical diffusion continuously increases, and, at the same time, the direction of diffusion is gradually inclined to the central part as the distance from the central part toward each of the edges on the screen surface increases. The diffusion properties (the angle and direction of diffusion) of the lenticular lens thus continuously vary between the central part and the edges of the screen surface.

Abstract: A method for preparing a solution of cellulose acylate is disclosed. The method comprises comprising the steps of (1) chilling an organic solvent containing no chlorinated organic solvent at a temperature of from −100° C. to −10° C., (2) mixing cellulose acylate containing an alkali-earth metal compound in an amount of from 10 ppm to 100 ppm with said chilled organic solvent to form a mixture, (3) swelling the cellulose acylate in the mixture, and (4) dissolving the mixture containing the swollen cellulose acylate by heating.

Abstract: A stacked structure especially useful for storing water in the underground is formed of a plurality of skeleton members. Each skeleton member includes a plurality of skeleton parts extending in one direction and situated side by side in a lateral direction perpendicular to the one direction. Each skeleton part has one top portion, and two bottom portions extending from the top portion, wherein one bottom portion in one skeleton part is connected to one bottom portion in the adjacent skeleton part. Also, each skeleton part includes top recesses formed at the top portion to be spaced apart from each other at a predetermined interval, and bottom recesses formed at the bottom portions to be spaced apart from each other at a predetermined interval. The skeleton members form upper and lower skeleton members to be vertically stacked together. The skeleton parts of the upper and lower skeleton members extend perpendicularly to each other.