Abstract: A method of producing an antireflection structure for use on a display or a window surface or both in an electronic device, such as a mobile phone. The display can be an LCD with a top polarizer and a bottom polarizer. The antireflection structure is imparted on the top polarizer by a roller embossing process. In particular, the embossing is carried out in the same manufacturing process when the polarizer is produced. The antireflection structure has a plurality of sub-wavelength periodic grooves. The antireflection structure on the window surface can be imparted using an embossing process or an injection molding process.

Abstract: A method for manufacturing the liquid crystal display, which mainly use a auxiliary substrate with polymeric material containing liquid crystal to proceed a photo polymerization process, and then use a first polymeric material layer to proceed a process with plurality electrode, alignment layer and flanges setting in. A second polymeric material mixture coating on a substrate which has plurality electrode pattern an alignment layer and flanges on it. And then align the auxiliary substrate and the substrate to proceed exposure process and combine both due to phase separation, finally removing the assist substrate.

Abstract: A process of producing an article having a surface provided with an optical diffraction grating such that the surface generates visible color when illuminated with diffuse white light. The process involves deforming a starting material to produce the article having the surface and, during the deforming step, impressing a diffraction relief pattern on the surface by a tool provided with a bearing surface having a corresponding surface relief pattern of parallel lines that contacts the surface of the article under pressure. While the diffraction relief patter is being impressed, the surface is caused to slide in a direction of movement relative to the bearing surface of the tool. The invention also relates to the article.

Abstract: A method of manufacturing a security item comprises coextruding at least two polymer plastic materials (6,7) with different characteristics so as to form a substrate so that neither material are biaxially oriented, and providing security indicia (14) on the substrate.

Abstract: A light polarizing film and method of making same includes a linear polarizer having a first surface and a second surface and having a polarization direction, an optical retarder comprising a simultaneously biaxially oriented polypropylene film disposed adjacent to the first surface of the linear polarizer and having an axis oriented at an angle with respect to the polarization direction, and an adhesive layer disposed between the first surface of the linear polarizer and the optical retarder and having a minimum adhesion strength of about 25 grams per inch.

Abstract: A method for manufacturing a polarization element which has a high reliability and is easy to manufacture. The manufacturing method includes the steps of forming a fine metal particle dispersed product including a plurality of dispersed fine metal particles on a surface of the transparent substrate using a sol-gel method, drawing the fine metal particle dispersed product together with the transparent substrate while heating both, and cutting the drawn fine metal particle dispersed product and transparent substrate. The forming step includes the steps of coating a sol coating liquid on the surface of the transparent substrate, heat-treating the coated sol coating liquid, and sintering the heat-treated sol coating liquid. The sol coating liquid includes a disperse liquid containing an organic silicon compound as a main component and a metal salt dispersed in the disperse liquid for forming the fine metal particles.

Abstract: A polarizer comprising a polyvinyl alcohol based film being dyed by iodine and treated with potassium iodide, wherein an element content ratio (K/I) of iodine (I) and potassium (K) is 0.05 through 0.24, show an effect controlling coloring and satisfying high durability under conditions of high temperature.

Abstract: A method of producing a polarizing plate, including the step of laminating a pair of curled protective sheets onto opposite surf aces of a polarizer respectively so that respective curling directions of the pair of curled protective sheets are reverse to each other, wherein the laminating index of the pair of protective sheets is selected to be not higher than 60 in order to restrain the polarizing plate from being curled.

Abstract: A polyvinyl alcohol film roll comprising a cylindrical core tube made of a metallic material and having a surface roughness of at most 100 S and a polyvinyl alcohol film wound up around the cylindrical core tube, the film roll being obtained by forming the film from a solution of a polyvinyl alcohol resin and winding up the film around the core tube, and the film roll being capable of providing an optically homogeneous polyvinyl alcohol film having an excellent appearance.

Abstract: A method of forming features on substrates by imprinting is provided. The method comprises: (a) forming a polymer solution comprising at least one polymer dissolved in at least one polymerizable monomer; and (b) depositing the polymer solution on a substrate to form a liquid film thereon; and then either: (c) curing the liquid film by causing the monomer(s) to polymerize and optionally cross-linking the polymer(s) to thereby form a polymer film, the polymer film having a glass transition temperature (Tg); and imprinting the polymer film with a mold having a desired pattern to form a corresponding negative pattern in the polymer film, or (d) imprinting the liquid film with the mold and curing it to form the polymer film. The temperature of imprinting is as little as 10° C. above the Tg, or even less if the film is in the liquid state. The pressure of the imprinting can be within the range of 100 to 500 psi.

Abstract: A method for stretching an optical polymer film is described, which comprises allowing a locus L1 of the holding means from a substantial holding initiation point to a substantial holding release point on one edge of the polymer film, a locus L2 of the holding means from a substantial holding initiation point to a substantial holding release point on the other edge of the polymer film, and a distance W between the two substantial holding release points to satisfy the following equation (1), maintaining the supporting property of the polymer film, stretching the film in the presence of a state in which the volatile content is 5% or more, and then, decreasing the volatile content while shrinking the film: |L2−L1|>0.

Abstract: A method of preparing a thermoplastic polycarbonate film having an optical retardation value of less than or equal to 20 nm, is described. The method includes: (a) forming a molten extrudate (20) of a thermoplastic polycarbonate polymer in an extruder (11) having a terminal die (17) through which the molten extrudate is passed, the molten extrudate having a temperature of 150° C. to 400° C. upon emerging from terminal die (17); and (b) passing molten extrudate (20), from die (17), between two counter-rotating rolls (23 and 26) each having an elastomeric polymer surface (35 and 38), the counter-rotating rolls having a roll speed ratio and a nip (41), the distance between the terminal die (17) and the nip (41) being a die-nip distance (47). The extrudate temperature, the roll speed ratio and the die-nip distance (47) are each selected such that a thermoplastic polycarbonate film (32) having an optical retardation value of less than or equal to 20 nm is formed.

Abstract: A method for peeling a lens sheet having two pairs of opposite portions from a forming mold comprises the first to third peeling steps. The first peeling step is to pull up a pair of opposite portions of a lens sheet, which is formed on a forming mold, to peel partially the lens sheet from the forming mold. The second peeling step is to pull up the other pair of opposite portions of the lens sheet to peel partially the lens sheet from the forming mold. The third peeling step is to pull up further the two pairs of opposite portions to peel entirely the lens sheet from the forming mold.

Abstract: A security article includes a light transmissive substrate having a first surface and an opposing second surface, with the first surface having an embossed region with an optical diffraction pattern or a holographic image pattern. A color shifting optical coating is formed on the substrate such as on the opposing second surface, with the optical coating providing an observable color shift as the angle of incident light or viewing angle changes. The security article can be used in a variety of applications and products to provide for enhanced security measures such as anticounterfeiting.

Abstract: The invention provides a continuous method for producing polarizing films that includes a step of monoaxially stretching a polyvinyl alcohol film having a width of at least 2 m in an aqueous boric acid solution, wherein the polyvinyl alcohol film is stretched on the condition that it satisfies the following formulae (1) and (2):

Abstract: Process for producing an anticounterfeit label having a holographic image, and labels produced according to the process.

Abstract: The invention provides a molding apparatus capable of obtaining a reference mark utilizing characteristics of molding of a polarizing film in the course of molding the polarizing film, and adapted for large item small scale production of the polarizing film. The molding apparatus comprises a molding box which is opened at an upper face, a closing valve attached to a suction port communicating with an inner space of the molding box, a vacuum source connected to the closing valve, pressing means provided at an opening edge of the molding box, and a mold having a concave spherical molding face and installed in the molding box. allowing the polarizing film to be sucked onto the molding face by vacuum suction to mold a colored concave and convex polarizing film.

Abstract: A plant for the continuous production of polarizing lenses includes a coil polarizing film feeding station; a glass convex lens feeding station; a concave lens feeding station; an under vacuum film shaping station; a deposition and gluing outer convex lens station; a translation station for the pre-glued lenses; a deposition and gluing inner concave lens station; a lens separation and film cutting station; and a palletization station for the finished lenses; and a method.

Abstract: A method for stretching an optical polymer film is described, which comprises allowing a locus L1 of the holding means from a substantial holding Initiation point to a substantial holding release point on one edge of the polymer film, a locus L2 of the holding means from a substantial holding initiation point to a substantial holding release point on the other edge of the polymer film, and a distance W between the two substantial holding release points to satisfy the following equation (1), maintaining the supporting property of the polymer film, stretching the film in the presence of a state in which the volatile content is 5% or more, and then, decreasing the volatile content while shrinking the film:

Abstract: An improved optical film having a continuous/disperse phase morphology and a method for making the same is provided. At least one of the continuous and disperse phases comprises a blend of homopolymers which are inter-reacted, as by transesterification. The resulting films exhibit a higher degree of birefringence for a given level of strain than analogous films in which the blend is replaced by a random copolymer.

Abstract: An improved process is provided for creating a rainbow and/or hologram image on a thermoplastic fibrous sheet or polymeric film by embossing a diffraction grating and/or hologram groove pattern from an embossing shim onto the sheet or film. An embossing shim of flexible polymeric film is employed rather than a hard metal shim, as had been used heretofore.

Abstract: A method for manufacturing a broadband cholesteric polarizer includes positioning a layer of reactive material; irradiating the layer of reactive material; directing, at a first side of the layer, a monochromatic beam of light of a given wavelength toward the layer; and detecting, at a second side of said layer, a detected intensity of light of the given wavelength coming from the layer.

Abstract: A method for making an enhanced intrinsic polarizer from a polymeric sheet having an original length and comprising a hydroxylated linear high polymer includes stretching the polymeric sheet to a stretched length of from greater than 5.0 times to about 7.0 times the original length, introducing a suitable dehydration catalyst to the polymeric sheet, and heating the polymeric sheet and the catalyst to effect partial dehydration of the polymeric sheet wherein light absorbing, vinylene block segments are formed.

Abstract: A polarizing film comprising a polarizer (A) and a protection film (B) prepared on at least one face of the polarizer (A), wherein the protection film (B) is adhered to the polarizer (A) without using adhesives, is induced problems by use of adhesives.

Abstract: A polarizer having good durability that is dyed by iodine, and is given boric acid processing, and moreover contains zinc without generating fault by deposit of boric acid or zinc, may be produced by a process of producing, comprising the steps of: conducting a dyeing processing by iodine to a non-stretched poly vinylalcohol film; conducting an uniaxial stretching processing and a boric acid processing; subsequently conducting a zinc impregnation processing; and furthermore, conducting an iodine ion impregnation processing.

Abstract: An object of the present invention is to provide a die suitable for producing an optical panel having an optical pattern (e.g. dots or lines) integrally formed on at least one side of the optical panel, which is, for example, an edge light panel or a light diffusion panel, which is used in a backlight or front light for a liquid crystal display, and various illuminators such as electric signs. According to the present invention, there are provided an optical-panel molding die for integrally forming an optical pattern on at least one side of an optical panel, which comprises a metal substrate and a molding pattern corresponding to said optical pattern and formed of a photosensitive heat-resistant resin on one side of the metal substrate, the whole of the surface having the molding pattern of the metal substrate being covered with a layer of said heat-resistant resin; a process for producing the die; and a process for producing an optical panel by using the die.

Abstract: In a polarizing filter, first and second protective films are adhered to a polarized film. The first protective film has rigidity at less than 320 kPa·m and degree of curl at more than 10 mm. The second protective film is not curled and has rigidity at more than 320 kPa·m. The protective films are produced in a solution casting method in which a solution is cast on a substrate continuously fed. The solution is dried to form the protective film. When a remaining solvent in the protective film is less than 60%, then the protective film is peeled from the substrate.

Abstract: The present invention provides a polarizing film or a polarizer that has an elastic modulus of at most about 3500 N/mm2 and suppresses occurrence of warping, the polarizing film is obtained by adsorbing a dichroic material in a polyvinyl alcohol-based film 20 mm in thickness and stretching the film. The polarizing film has a transmittance of at least 43% and a polarization degree of at least 98%. A transparent protective layer is laminated on at least one surface of the polarizing film to form a polarizing plate.

Abstract: A method of manufacturing a medical instrument for diffusing light from an optical fiber is provided. The medical instrument includes an optical fiber having a proximal portion including a cladding layer surrounding the core and a distal portion having a diffuser tip comprising a protective coating made of acrylic or methylpentene surrounding the core, an optical coupling layer, and a sleeve. The protective coating strengthens the distal end of the optical fiber so that it can withstand a higher bending moment at failure than the uncladded core. At the same time, the protective layer has an index of refraction that is between the indices of refraction of the core and the optical coupling layer to direct light out of the core through to the optical coupling layer.

Abstract: The present invention relates to a triazine type monomer, and more particularly, to a 1,3,5-triazine type monomer characterized by having at least one amine group and at least two sulfur atoms, which can be used in manufacturing transparent optical resins having excellent refractive index, surface hardness and absorbance as well as an improved workability and the ability to control a wide range of refractive index according to the change in composition by the monomer itself at room temperature or by polymerizing the monomer with a comonomer in the presence of an organic solvent or an initiator.

Abstract: A ruling of cube corner elements comprising intersecting ruled vee-grooves is characterized in that at least one of the vee-grooves is made such the substrate being ruled and the cutting tool are oscillated with respect to one another during the ruling of the vee-groove. Rulings made in accordance with the instant invention can be designed to produce a cube corner element having broader divergence.

Abstract: A polarizing plate used for manufacturing a liquid crystal display with suppressed irregularity in brightness, a method of manufacturing the same, and a liquid crystal display using the same, are provided. The polarizing plate is formed having a laminate of a polarizing film and a transparent protective layer provided on at least one surface of the polarizing film. By heat-treating and subsequently reheat-treating, the laminate has a shrinkage force of at most 8N/10 mm width when the laminate is further left at 60° C. for 1 hour, and furthermore, the laminate has a single hue value b of at most 4.6 NBS.

Abstract: The present invention provides a solution to the needs described above through a method for forming multiply patterned optical articles. The method comprises providing a micromold having a pre-patterned surface structure, disposing a photorecording medium comprising a matrix precursor and a photactive monomer on a holder surface, moving the micromold to the photorecording medium on the holder surface such that the pre-patterned surface structure contacts the photorecording medium, wherein the photorecording medium conforms to the pre-patterned surface structure of the micromold, at least partially curing the photorecording medium adherent while the micromold pre-patterned surface structure contacts the photorecording medium, and further patterning the photorecording medium by irradiating the photorecording medium with laser light to polymerize the photoactive monomer.

Abstract: A molding die having satisfactory releasability, a sol-gel composition produced using the molding die, and a process for producing a sol-gel composition. The molding die which is to be pressed against a sol-gel material for producing a sol-gel composition has a release film, e.g., a thin gold (Au) film, formed on the molding surface of the molding die through a buffer layer made of metals and/or inorganic oxides.

Abstract: A method for manufacturing a polarization element which has a high reliability and is easy to manufacture. The manufacturing method includes the steps of forming a fine metal particle dispersed product including a plurality of dispersed fine metal particles on a surface of the transparent substrate using a sol-gel method, drawing the fine metal particle dispersed product together with the transparent substrate while heating both, and cutting the drawn fine metal particle dispersed product and transparent substrate. The forming step includes the steps of coating a sol coating liquid on the surface of the transparent substrate, heat-treating the coated sol coating liquid, and sintering the heat-treated sol coating liquid. The sol coating liquid includes a disperse liquid containing an organic silicon compound as a main component and a metal salt dispersed in the disperse liquid for forming the fine metal particles.

Abstract: An oriented film of polyvinyl alcohol derived film with reduced stretch irregularity and uniform orientation in a wide range of a stretching ratio is obtained by a manufacturing method for an oriented film, comprising the steps of: contacting a non-stretched film, comprising polyvinyl alcohols or derivatives thereof, with moisture percentage adjusted to no more than 10%, to at least one heating roll currently driven and heating the film at no less than 70° C.; subsequently giving a tension and stretching using a peripheral velocity difference between the heating roll concerned and a stretch roll in a position ahead of said heating roll in a running direction of the film.

Abstract: A method for transferring a three-dimensional structure onto a substrate, which includes filling a plurality of concaves arranged on a sheet-form mold with a paste-like structural material, temporarily fixing the mold to a support member, contact-bonding the structural material in a state in which the structural material has the adhesion property or bonding property to the substrate together with the mold, releasing the temporary fixation of the mold by the support member after the contact-bonding, and removing the mold from the substrate, thereby transferring a three-dimensional structure onto the substrate.

Abstract: The present invention relates to a triazine type monomer, and more particularly, to a 1,3,5-triazine type monomer characterized by having at least one amine group and at least two sulfur atoms, which can be used in manufacturing transparent optical resins having excellent refractive index, surface hardness and absorbance as well as an improved workability and the ability to control a wide range of refractive index according to the change in composition by the monomer itself at room temperature or by polymerizing the monomer with a comonomer in the presence of an organic solvent or an initiator.

Abstract: A polarizing film may be manufactured without using adhesives by a method in which a protective film (B) is laminated onto at least one face of a polarizer (A), then adhered by thermocompression bonding. Thus problems on manufacturing method of a polarizing film possibly caused by use of adhesives will not be generated.

Abstract: Graphic material includes at least one area bearing a hologram and at least one area bearing a diffraction grating. Preferably, the diffraction grating and the hologram are simultaneously viewable from at least one perspective. The graphic material is made using an embossing die grown from a precursor blank which has been embossed in discrete areas with a holographic microtexture and then partially overstamped with a diffraction grating microtexture. The stamping of the blank may be effected by pressing a suitably shaped die against a shim bearing a diffraction grating microtexture for forming the microtexture in the die shape on the blank.

Abstract: A process for in-line lenticular film manufacturing having a selected web orientation includes providing an optically clear material web to an in-line converting and/or printing press. The optically clear material web is advanced in the in-line converting and/or printing press in a machine direction of the press. The press includes a lenticule forming means for forming lenticules in the optically clear material web. The lenticules are formed in a selected orientation relative to the machine direction of the press.

Abstract: A process for making a retroreflective article that includes the steps of providing a device (tool or a mold) having a first structured surface; applying a reflective layer on the first structured surface resulting in a first adhesion value between the reflective layer and the first structured surface, the reflective layer having an exposed surface; applying a molding polymer to the exposed surface of the reflective layer resulting in a second adhesion value between the reflective layer and the molding polymer. The second adhesion value is higher than the first adhesion value. The device is separated from the molding polymer to yield a retroreflective article that has a second structured surface that is the reverse image of the first structured surface. The separation causes a transfer of the reflective layer from the first structured surface to the retroreflective article.

Abstract: A method for producing a tamper evident security holographic label and overlaminate using UV casting techniques, and a security device so produced, comprising a clear protective layer; a thin layer of clear UV cured resin cast partly onto the protective layer following a designed pattern; another layer of UV cured resin bearing a cast holographic image, wherein the bond of the holographic image layer is stronger toward the surface of the protective layer than it is toward the surface of the pattern layer; a reflective layer strongly attached to the adjacent holographic layer; and an adhesive layer bonded to the reflective layer. Such a composite product when adhered to a base substrate via the adhesive layer will show no visible security feature to the unaided eye due to the thin nature of the clear security pattern.

Abstract: An optical-quality plastic part is provided having a PET polarizing film formed to contour with the optical requirements of the plastic construct without jeopardizing its optical, mechanical or cosmetic properties.

Abstract: The present invention relates to a decorative plastic film for the surface treatment, in particular, of vehicle bodies and building facades. It has a micro- or nano-scale structure, in which micro-or nano-scale particles (4) are introduced in uniform shape, size, and orientation into a transparent polymer substrate (3), so that the optically perceptible effect is produced exclusively or largely by optical effects in the collective arrangement of the particles (4).

Abstract: Resin sheets which are thin and lightweight and have an antiglare function for preventing the so-called ghost phenomenon in which an illuminating light, such as fluorescent light or sunlight, or part of the surrounding objects, e.g., the keyboarder, is reflected on the display and/or a light-diffusing function for preventing the glittering attributable to an illuminating light or to the built-in backlight in the liquid crystal display; processes for producing the resin sheets; and liquid crystal displays using the resin sheets. One of the resin sheets comprises a gas barrier layer, a base layer, and two hard coat layers respectively as the outermost layers, wherein one of the hard coat layers has recesses and protrusions on the outer surface thereof and at least one of the hard coat layers contains transparent particles.

Abstract: Printing resolution parameters of a printer, preferably an inkjet printer, are obtained. The printer resolution values are used to fabricate an extrusion tool for extruding lenticular sheets or foils. A lenticular sheet or foil is extruded with the fabricated extrusion tool to have spacing between microlenses proportional to the printer resolution value. One or more images are digitized and stored in a general purpose programmable computer. The general purpose programmable computer segments the data for each image into raster pixel lines and interleaves the segments into a merged file. A printer of the type from which the printing resolution parameters were obtained prints the merged file on the lenticular sheet.

Abstract: A method and work material for making embossed blanks for sample packages and other free-standing three dimensional display items from a sheet-type work material includes a printer for printing a graphic image on the work material, and a processing mechanism for performing work operations on the work material. The sheet-type work material has a top layer of sheet material, an intermediate layer of sheet material, and a carrier layer of sheet material, with a first layer of adhesive material bonding the top and intermediate layers of sheet material together, and a second layer of adhesive material bonding the intermediate and carrier layers of sheet material together. Any, all, or a combination of the top, intermediate, or carrier layers of sheet material may have shape retaining deformability characteristics to aid in holding an embossed design in the work material.

Abstract: A method for applying resin for forming a lens sheet comprises the steps (a) to (c). The step (a) is to apply ionizing radiation curing type resin in a form of liquid on an entirety of an upper surface of a forming die through a multiple nozzle to form a first uncured resin layer on the upper surface of the forming die. The step (b) is to apply the ionizing radiation curing type resin in the form of liquid on one side of the first uncured resin layer through a nozzle to form an uncured resin pool thereon. The step (c) is to spread the uncured resin pool from the one side of the first uncured resin layer toward the other side thereof to form a second uncured resin layer on the first uncured resin layer.

Abstract: An apparatus for manufacturing a lens sheet comprises an application device, a substrate supply device, a pressing device and an irradiation device. The application device applies ionizing radiation curing type resin in the form of liquid on the upper surface of a forming die for a lens sheet to form an uncured resin body on the upper surface of the forming die. The substrate supply device places a substrate on the uncured resin body. The pressing device presses the substrate against the uncured resin body to flatten the uncured resin body, so as to form a uncured resin layer, while spreading the uncured resin body to an outside periphery of the forming die. The irradiation device irradiates ionizing radiation on the uncured resin layer through the substrate to cure the uncured resin layer.