Dexerials Corporation

Tdk Corporation

Naoki Hanashima

Akio Takada

Koji Sasaki

Kazuyuki Shibuya

Tohru Kineri

Reio Mochida

Nobuyuki Koike

Kenjiro Hata

Hiroshi Sugata

Yusuke Matsuno

Adrian Lo

Shunichi Kajiya

Kazuya Hayashibe

Mitsuo Arima

Makoto Sekijima

Shunsuke Kanasugi

Eiji Takahashi

Isamu Sato

Shinji Iwatsuka

Taro Oike

Naoto Kaneko

Takahiro Kimura

Masatoshi Sasaki

Katsuhiro Doi

Yoshikazu Narumiya

Kyoko Sakurai

Hideto Sagawa

Takatoshi Yamada

Katsuhiro Shindo

Makoto Sekijma

The micro-lens array is a micro-lens array in which a plurality of micro-lenses are arranged in a matrix in a plan view, wherein each of the plurality of micro-lenses has four main sides in a plan view, and each of the four main sides is inclined with respect to a row virtual line parallel to a row direction or a column virtual line parallel to a column direction.

Micro-lens array, projection type image display device, method for designing micro-lens array, and method for manufacturing micro-lens array

In order to provide an optical device and a diffusion plate which has high transmittance and is capable of reducing speckle noise, the present it is a diffusion platein which a plurality of microlens cellsare arranged on both surfaces of a transparent substrate, the diffusion platehaving a first microlens arrayA which is formed on one surface of the transparent substrateand comprises a plurality of concave or convex microlens cells, and a second microlens arrayB which is formed on the other surface on the reverse side from the one surface and comprises a plurality of concave or convex microlens cells, and the diffusion platebeing configured so that light emitted from the microlens cellsconstituting the first microlens array 12A is incident on the microlens cells 11 constituting the second microlens array 12B.

Diffusion plate and optical device

There is provided a light emitting device that can be used as a light guide plate and has an excellent antireflection function to extraneous light, and an optical body includes: a base material; a macro concave-convex structure that is formed on one surface of the base material and emits internally propagating light that is injected in an inside of the base material from a side surface of the base material, from another surface of the base material; and a micro concave-convex structure formed periodically to follow each of both surfaces of the base material and a surface of the macro concave-convex structure, and having an average period of concavity and convexity of less than or equal to a wavelength of visible light. The surface of the macro concave-convex structure has an inclined surface, and an arrangement of the micro concave-convex structure is a zigzag arrangement.

Optical body and light emitting device

Provided is a depolarizing plate having a superior degree of depolarization to conventional depolarizing plates. The depolarizing plate includes a light-transmitting substrate having a surface layer portion in which a fine pattern is provided that includes a plurality of curved lines randomly disposed at a pitch of no greater than a wavelength of light, and that exhibits structural birefringence.

Depolarizing plate

Provided is a fine concave-convex laminate that is reduced in thickness, has excellent antireflection performance, and can suppress scattering and absorption of short-wavelength light. A fine concave-convex laminate comprises a substrate, a first transparent organic layer, and a second transparent organic layer laminated in the stated order, wherein the first transparent organic layer has a fine concave-convex structure at a surface facing the second transparent organic layer, the second transparent organic layer has fine concave-convex structures at both surfaces, and a thickness of a composite layer composed of the first transparent organic layer and the second transparent organic layer is 15 &#x3bc;m or less.

Fine concave-convex laminate and production method therefor, and camera module-mounted device

There is provided a method to manufacture a diffuser plate with better productivity and exhibiting an excellent diffusion property and having excellent durability with respect to light having large coherence, the microlens array diffuser plate including: a microlens group positioned on a surface of a transparent substrate. The diffuser plate includes two or more unit cells that are continuously set in array, the unit cell includes a plurality of microlenses positioned on the surface of the transparent substrate, and ridge lines between the microlenses adjacent to each other are nonparallel to each other, and are nonparallel to the transparent substrate.

Diffuser plate, designing method of diffuser plate, manufacturing method of diffuser plate, display device, projection device, and lighting device

There is provided a microlens array diffuser plate including: a microlens group positioned on a surface of a transparent substrate. The microlens group at least corresponding to a light ray entering part in the microlens array diffuser plate includes two or more unit cells that are continuous in an array sequence, and the unit cells include a plurality of microlenses positioned on the surface of the transparent substrate. The light ray entering part has at least two regions having different average diffusion angles.

Diffuser plate, designing method of diffuser plate, display device, projection device, and lighting device

There is provided a novel and improved optical body, method for manufacturing an optical body, light-emitting apparatus, and display apparatus for amusement equipment capable of improving emitted luminance and transparency, the optical body including: a base material; and a light extraction section, formed on at least one surface of the base material, that extracts internally propagated light incident inside the base material from a side face of the base material to an outside of the base material. The light extraction section includes a concave-convex structure in which at least one of concavities and convexities has a frustum shape, a fill ratio of the concave-convex structure is 15% or greater, and a light transmittance is 50% or greater.

Optical body, method for manufacturing optical body, light-emitting apparatus, and display apparatus for amusement equipment

There is provided a novel and improved optical body, method for manufacturing an optical body, light-emitting apparatus, and image display apparatus capable of improving emitted luminance and transparency, the optical body including: a base material; and a light extraction section, formed on at least one surface of the base material, that extracts internally propagated light incident inside the base material from a side face of the base material to an outside of the base material. The light extraction section includes a concave-convex structure in which at least one of concavities and convexities has a frustum shape, a fill ratio of the concave-convex structure is 15% or greater, and a light transmittance is 50% or greater.

Optical body, method for manufacturing optical body, light-emitting apparatus, and image display apparatus

Depolarizing plate, optical device and liquid-crystal display device including same, and depolarizing plate production method

There is provided an optical body including: a base material; a second optical layer, formed on at least one surface of the base material, that reduces a reflection of extraneous light; and a first optical layer, laminated on top of a part of the second optical layer, that extracts internally propagating light incident inside the base material from a side face of the base material to an outside of the base material. On a surface of the first optical layer, a first concave-convex structure that reflects the internally propagating light is formed.

Optical body, method for manufacturing optical body, and light-emitting apparatus

There is provided an optical body including: a base material; and a light extraction unit that is formed on a surface of the base material and that extracts, to an outside of the base material, internally propagating light that is injected in an inside of the base material from a side surface of the base material. The light extraction unit is formed of a convex microlens array, and a maximum inclination angle of the convex microlens array substantially coincides with a maximum propagation angle of the internally propagating light.

There is provided a diffuser plate, a display device, a projection device, and a lighting device that can achieve flat diffusion angle distribution characteristics while reducing a high-order diffraction component, the diffuser plate including: a single lens group positioned on a surface of a transparent substrate, in which curvature radii of respective single lenses composing the single lens group are varied as a whole, and peak positions of the respective single lenses are located irregularly, and a lens surface shape of at least one of the single lenses in the single lens group satisfies Equation 1 and Equation 2.

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Tokyo, Japan

Naoki Hanashima