Sony Corporation

Dexerials Corporation

Tsutomu Nagahama

Yumi Haga

Shinichi Matsumura

Masashi Enomoto

Hitoshi Watanabe

Hironori Yoshida

Hiroyuki Kiso

Yukio Miyaki

Mitsuo Arima

Masaharu Senoue

Hiroyuki Itou

Masaki Suzuki

Hirokazu Odagiri

Takao Kudo

Atsushi Shibuya

Masayuki Ishiwata

Masayuki Tanishima

Hiroya Takenaka

Ryo Suzuki

Masamitsu Kageyama

Yasuyuki Kudo

Akihiro Shibata

Eiji Ohta

Kazuhiko Noda

Katsuhiro Doi

Shigehisa Ohkawara

Kazuo Goto

Toru Yatabe

Tatsuya Harimara

Kiroyuki Kiso

To suppress, in an optical body in which a microlens array as a non-periodic structure is arranged and deployed in a wide range, occurrence of periodic optical properties in a structural unit larger than the non-periodic structure. The optical body includes a single non-periodic structure region or a collection of a plurality of non-periodic structure regions, the non-periodic structure region being composed of a single lens group including a plurality of single lenses. In the non-periodic structure region, a located state of the single lens group is non-periodic as a whole. A ratio of a size of the non-periodic structure region to an average aperture diameter of the single lenses in the non-periodic structure region is more than or equal to 25.

Optical body, diffuser plate, display device, projection device, and lighting device

An optical body including: a first optical layer which has a surface having a convex profile in which a plurality of one-directionally extending elongated convex portions are one-dimensionally aligned in one direction; an inorganic layer disposed on the surface of the first optical layer on a side having the convex profile and a second optical layer disposed on a side of the inorganic layer so that the convex profile is embedded; wherein the convex profile meets at least one of the following (1) to (4):

Optical body

There is provided a reflective diffuser plate to achieve more uniform diffusion angle distribution properties. The reflective diffuser plate is a microlens array reflective diffuser plate including a single lens group positioned on a surface of a transparent base material. There are variations in aperture diameter and radius of curvature that respective single lenses constituting the single lens group have in the single lens group as a whole, and vertex positions of the respective single lenses are located irregularly. A luminance distribution of reflected light of light vertically incident on the single lens group is substantially uniform in a predetermined diffusion angle range. For at least light incident on the single lens group from certain directions, a relation of 0.3&#x2264;A/B&#x2264;1 holds where A represents a reflection luminance value in the surface normal direction, and B represents a peak reflection luminance value of a diffuse reflection component.

Reflective diffuser plate, display device, projection device, and lighting device

There is provided a diffuser plate, a display device, a projection device, and a lighting device that can achieve more even diffusion angle distribution properties, the diffuser plate being of a microlens array type, and including: a single lens group located on a surface of a transparent base material, in which aperture sizes and radii of curvatures of respective single lenses constituting the single lens group vary in the single lens group as a whole, and vertex positions of the respective single lenses are located irregularly, and energy distribution of light that transmits through the single lens group is substantially even in a predetermined diffusion angle range.

Diffuser plate, display device, projection device, and lighting device

An optical body includes a first optical transparent layer having quadrangular pyramid-shaped depressions, a wavelength-selective reflecting layer formed on the depressions and selectively reflecting light of a specific wavelength band, and a second optical transparent layer formed on the wavelength-selective reflecting layer. When (&#x3b8;, &#x3d5;) is taken as the incident angle (&#x3b8;: angle between perpendicular line relative to second optical transparent layer acting as incident surface and light incident on incident surface; &#x3d5;: angle between specific straight line within incident surface and component resulting from projection of incident light on incident surface), with respect to incident light that is incident on the incident surface from different &#x3d5; directions at &#x3b8;=60&#xb0;, the optical body has an average reflection angle of reflected light to the same quadrant as the incident light of 30&#xb0; or more.

Optical body, window material, and roll screen

An optical element is provided includes an optical layer having a flat incident surface on which light is incident and a wavelength-selective reflective layer disposed in the optical layer. Of light incident on the incident surface at an incident angle (&#x3b8;, &#x3c6;), the optical element selectively directionally reflects light in at least one specific wavelength range in at least one direction other than a specular reflection direction (&#x2212;&#x3b8;, &#x3c6;+180&#xb0;) while transmitting light in at least one wavelength range other than the specific wavelength range, and is transparent to light in at least one wavelength range other than the specific wavelength range.

Optical element and method for producing the same

An optical element is provided with an optical layer in which a concavo-convex surface is formed on the surface thereof, and a wavelength-selective reflection layer formed on the concavo-convex surface. The wavelength-selective reflection layer directionally reflects light having a specific wavelength band selectively, while transmitting light having wavelength bands other than the specific wavelength band. The concavo-convex surface is provided with a plurality of first structural elements that are extended in a first direction within the surface of the optical layer and a plurality of second structural elements that are extended in a second direction within the surface of the optical layer, and placed to be spaced apart from each other, with the first direction and the second direction intersecting with each other.

Optical element, window material, fitting, solar shading device, and building

Wavelength selective optical element for reflecting light

An optical body includes a first optical layer, a second optical layer having an incident surface on which light is incident, and a reflecting layer sandwiched between the first and second optical layers, wherein the first optical layer includes a plurality of convex or concave structures formed on or in a surface thereof on which the reflecting layer is disposed, ridges of the convex structures or ridges between the concave structures adjacent to each other have tip portions projecting toward the incident surface side, the tip portions are deformed from an ideal shape, the second optical layer is transparent and has a refractive index of 1.1 or more and 1.9 or less, and the optical body selectively directionally reflects part of light entering the incident surface, which part is in a specific wavelength band, in direction other than the specular reflection direction.

Optical body, optical body manufacturing method, solar shading member, window member, interior member, and fitting

An optical body includes a first optical layer having a random concave-convex surface, a reflecting layer formed on the concave-convex surface, and a second optical layer formed on the reflecting layer to embed the concave-convex surface, wherein the reflecting layer is a wavelength-selective reflecting layer for diffusely reflecting, of incident light, light in a specific wavelength band and transmitting light other than the specific wavelength band therethrough.

Optical body with diffusion reflectivity, wall member, fitting, and solar shading device

An optical body includes a substrate having a concave-convex surface, a reflecting layer formed on the concave-convex surface, and an optical layer formed on the reflecting layer to embed the concave-convex surface, wherein the reflecting layer directionally reflects light, the concave-convex surface is made up of a plurality of triangular pillars arrayed in a one-dimensional pattern, and the triangular pillar has an apex angle &#x3b1; and a slope angle &#x3b2;, the apex angle &#x3b1; and the slope angle &#x3b2; satisfying a formula (1) or (2) given below:30&#x2266;&#x3b2;&#x2266;4.5&#x3b1;&#x2212;285(70&#x2266;&#x3b1;&#x2266;80)&#x2003;&#x2003;(1)30&#x2266;&#x3b2;&#x2266;&#x2212;1.5&#x3b1;+195(80&#x2266;&#x3b1;&#x2266;100)&#x2003;&#x2003;(2).

Optical body, wall member, fitting, solar shading device, and building

An optical body includes a first optical layer having a concave-convex surface, a wavelength-selective reflecting layer formed on the concave-convex surface, and a second optical layer formed on the wavelength-selective reflecting layer to embed the concave-convex surface, the wavelength-selective reflecting layer having a multilayer structure formed by successively stacking at least a first high refractive index layer, a metal layer, and a second high refractive index layer, wherein, given that optical film thicknesses of the first high refractive index layer and the second high refractive index layer are x and y, respectively, and a geometrical film thickness of the metal layer is z, x, y and z satisfy the following formula (1): 

Optical body with suppressed change in color tone and window member, fitting, and solar shading including the optical body

An optical body includes a first optical layer having a concave-convex surface, a wavelength selective reflecting layer formed on the concave-convex surface, and a second optical layer formed on the wavelength selective reflecting layer and embedding the concave-convex surface. The wavelength selective reflecting layer selectively directionally reflects light in a particular wavelength band while transmitting light other than the particular wavelength band therethrough. The concave-convex surface is made up of a plurality of triangular pillars arrayed in a one-dimensional pattern, and the triangular pillar has an apex angle &#x3b1; and a slope angle &#x3b2;, the apex angle &#x3b1; and the slope angle &#x3b2; satisfying a predetermined relationship.

Optical body, window member, fitting, solar shading device, and building

An optical film includes a base member and an optical layer provided on the base member. The optical layer has an irregular shape on a surface thereof, and the irregular shape is obtained by applying a coating material containing fine particles and a resin onto the base member, distributing the fine particles densely in some regions and sparsely in other regions by convection that occurs in the coating material, and curing the coating material. The resin contains 3% by weight or more and 20% by weight or less of a polymer, the fine particles are organic fine particles having an average particle diameter of 2 &#x3bc;m or more and 8 &#x3bc;m or less, a ratio ((D/T)&#xd7;100) of the average particle diameter D of the fine particles to an average film thickness T of the optical layer is 20% or more and 70% or less, and a transmitted image clarity value measured with an optical comb having a width of 0.125 mm is 45 or more.

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Miyagi, Japan

Tsutomu Nagahama