A display front plane having an anti-reflection film in thickness uniformity and good adhesion between the anti-reflection film and the base material is supplied. Each of a display lenticular lens and a display fresnel lens having a sophisticated anti-reflection function with a high total light transmittance is also to be provided. As for the display front plane, lenticular lens, fresnel lens relating to the present invention, gas containing a gas for thin film formation is introduced into a discharge space under the atmospheric pressure or the pressure close to it and the gas is activated by applying a high frequency electric field in the discharge space mentioned above. And then, anti-reflection film at least on one side of the surface of the base material is formed by exposing the base material in the aforementioned activated gas.

Display front plane, display lenticular lens, and display fresnel lens

An antireflection structure having a high antireflection effect is provided. An antireflection structure (50) reduces reflection of light having a wavelength equal to or larger than a predetermined wavelength, and absorbs the light whose reflection is reduced. The antireflection structure (50) includes a base structure portion (7) which is configured to have a plurality of structural units (70) arranged on a reference plane, and each having a tilted surface (71) so that an angle between the first side surface (71) and a reference plane (51) is a predetermined angle, and a plurality of fine concave/convex portions (8, 8, . . . ) which are formed on a surface of the base structure portion (7), and arranged within a cycle equal to or smaller than the predetermined wavelength.

Antireflection structure, optical unit, and optical device

PROBLEM TO BE SOLVED: To provide an optical functional sheet having an antireflection layer applicable on a large base material having an optical functional shape on its surface. SOLUTION: The optical functional sheet comprises a base material having an optical functional shape formed on its top surface, and an antireflection layer formed on the top surface of the base material and having voids in the layer; and the sheet has an optical function by the optical functional shape. COPYRIGHT: (C)2006,JPO&NCIPI

Optical functional sheet

A liquid crystalline polyester fiber which exhibits a half width of endothermic peak (Tm1) of 15° C. or above as observed in differential calorimetry under heating from 50° C. at a temperature elevation rate of 20° C./min and a strength of 12.0 cN/dtex or more; and a process for production of the same. A liquid crystalline polyester fiber which is excellent in abrasion resistance and lengthwise uniformity and is improved in weavability and quality of fabric and which is characterized by a small single-fiber fineness can be efficiently produced without impairing the characteristics inherent in fabric made of liquid crystalline polyester fiber produced by solid phase polymerization, namely, high strength, high elastic modulus and excellent thermal resistance.

Liquid crystalline polyester fiber and process for production of the same

Optical elements, concentrating photovoltaic devices and methods of forming optical elements are provided. An optical element includes a transparent material including a first surface and a second surface opposite the first surface. The first surface has a Fresnel lens and the second surface has a plurality of microlenses corresponding to the Fresnel lens. One of the first surface and the second surface is configured to receive light. The optical element is configured so that light passing through the optical element is separated into a plurality of beamlets via the plurality of microlenses. The Fresnel lens has a height where, at the height of the Fresnel lens, a diffraction efficiency of at least two different wavelengths of the light passing through the optical element is maximized.

Fresnel-fly's eye microlens arrays for concentrating solar cell

PROBLEM TO BE SOLVED: To provide a fresnel lens sheet of high transmissivity where the occurrence of a ghost image due to undesired light is suppressed so that satisfactory contrast can be obtained, and to provide a method for manufacturing the fresnel lens sheet. SOLUTION: In the fresnel lens sheet, many saw-tooth fresnel lenses constituted of a fresnel lens surface 4 having the function of a convex lens and a rise surface 5 positioned between adjacent fresnel lens surfaces are arranged, and antireflection processing 7 is applied on the fresnel lens surface, and a light diffusion layer 6 or a light absorbing layer is arranged on the rise surface. The fresnel lens sheet is manufactured by applying coating liquid including particles whose average particle diameter is within the range of 1 to 50 μm and particles whose average particle diameter is within the range of 0.01 to 0.2 μm by a spin coating method, thereafter, removing the particles whose average particle diameter is within the range of 0.01 to 0.2 μm.

Fresnel lens sheet and manufacture of the same

PROBLEM TO BE SOLVED: To obtain a resin-reinforcing material which has excellent dimensional stability, mechanical properties and homogenity and is useful for composite materials and the like by using a specific sheath-core type conjugate fiber. SOLUTION: This resin-reinforcing material uses sheath-core conjugate fibers each of which comprises a sea-island component structure formed a sea component and an island component and has a smoothly undulated surface. The sea component comprises a meltable liquid crystal polyester (A polymer) comprising the repeating component units formed from an aromatic hydroxycarboxylic acid as a core component and a flexible thermoplastic polymer (B polymer) such as a polyolefin as a sea component. The island component comprises a meltable liquid-crystal polyester (C polymer). The resin-reinforcing material comprises the woven fabric of the sheath-core type conjugate fibers, has a 200-500 mesh mesh-like structure having an opening rate of >=30%, and is preferably integrated with a resin to produce a composite material.

Resin-reinforcing material and composite material

PROBLEM TO BE SOLVED: To obtain a thermotropic liquid crystal polyester fiber having a fine denier size, excellent in mechanical properties, and useful as a resin reinforcing agent or the like by forming a mixture comprising a thermotropic liquid crystal polyester or the like into a fiber under a specific condition. SOLUTION: This thermotropic liquid crystal polyester fiber having =50 ratio of the velocity of winding to the linear velocity of extrusion (a draft ratio) and 1,500-9,000 m/min winding velocity. Preferably, the thermotropic liquid crystal polyester fiber includes 0.1-5 wt.% methacrylate-based polymer.

Thermotropic liquid crystal polyester fiber and its production

PROBLEM TO BE SOLVED: To provide a Fresnel lens sheet including multiple Fresnel lenses being positioned and arranged accurately. SOLUTION: Each Fresnel lens 10 becomes a polygonal shape. The Fresnel lenses are arranged adjacent to one another as a Fresnel lens group 100. The Fresnel lens includes a fine pitch region 1(R) having a pitch P1 of ≤300 μm in at least one region. When a region adjacent to the inside of a radius of the fine pitch region 1(R1) is taken as a region 2 (R2), and when a region adjacent to the outside of a radius of the fine pitch region 1(R1) is taken as a region 3(R3), the pitch P1 in the fine pitch region 1 is different from pitches in the region 2(R2) and the region 3(R3) by 20% or more. Moreover, at least one of a circular arc or circumference configuring the Fresnel lens in the fine pitch region 1 inscribes with at least one side of the sides configuring the polygon or passes across at least the one side thereof (T). COPYRIGHT: (C)2011,JPO&INPIT

Fresnel lens sheet, method of manufacturing the same and method of manufacturing stamper used for the same, and photovoltaic power generation apparatus including the fresnel lens sheet

PROBLEM TO BE SOLVED: To provide a sheet for backlight in which handling of the sheet is easy and which demonstrates a high luminance improvement effect SOLUTION: Lenses 8 are arranged in parallel on one of the faces of a lens sheet 6 An optical sheet 7 arranged on the lens side of the lens sheet 6 and lens crown parts of the lens sheet 6 are pasted together through a reflection layer 10 By this structure, transmittance of light and condensing action to the front face are high and a high luminance improvement effect is demonstrated Furthermore, since the lens sheet 6 and the optical sheet 7 are pasted together, handling at the time of assembly of the backlight is easy Furthermore, such a problem that sheets are damaged by mutually rubbing and unevenness of brightness is caused can be solved COPYRIGHT: (C)2009,JPO&INPIT

Yoji Ono

Papers

Fresnel lens sheet and manufacture of the same

Resin-reinforcing material and composite material

Thermotropic liquid crystal polyester fiber and its production

Fresnel lens sheet, method of manufacturing the same and method of manufacturing stamper used for the same, and photovoltaic power generation apparatus including the fresnel lens sheet

Sheet for backlight