Agc Inc.

Tsuneo Ichimatsu

Yukihiro Tao

Naruki Yamada

Yusuke Sato

Yoshinori Iguchi

Yoko Mitsui

Osamu Iwata

There are provided a video projecting structure, which is capable of having not only transparency but also high visibility of a video, a process for producing the same, and a video display system including the video projection structure. A video projecting structure includes a first transparent layer having irregularities disposed on a surface thereof, a reflective layer disposed on the surface of the first transparent layer, and a second transparent layer disposed on the reflective layer; wherein when a surface of the first transparent layer opposite to the reflective layer is defined as a reference surface, the irregularities include a plurality of slant surfaces slant to the reference surface and reflecting light from a video; wherein when a first direction, a second direction and a third direction are defined such that the first direction is perpendicular to a normal direction of the reference surface, the slant surfaces extend in the first direction, the second direction is orthogonal to the first direction, the slant surfaces are arrayed in the second direction, and the third direction is a direction in which the slant surfaces have an average slant angle &#x3b8; to the reference surface in section in the second direction; the irregularities include a portion which is configured such that when an average spacing Smof the irregularities in the first direction, an average spacing Smof the irregularities in the second direction and an average spacing Smof the irregularities in the third direction are such that Sm&#x3e;Smand Sm&#x3e;Smare met, and Smis maximum; and wherein the irregularities include a portion which is configured such that when a frequency distribution of inclinations of the irregularities in the second direction to the reference surface is measured in 0.25&#xb0; divisions in every distance of 1 mm in order that the frequencies are represented as distances, the absolute value of a median value in the frequency distribution is a value other than 0&#xb0;.

Image projection structure, method for manufacturing same, and image display system

There is provided a transparent screen which is capable of separating a direction where a hot spot is observed and a direction where a bright video is allowed to be observed, and establishing a direction where a video is allowed to be wholly brightly observed. A transparent screen includes a first transparent layer, a reflective layer reflecting projected video light, a second transparent layer disposed opposite to the first transparent layer with respect to the reflective layer so as to make a background visible therethrough; wherein the reflective layer has a plurality of slant reflective surfaces, each of the slant reflective surfaces being slant to a reference surface that is a surface of the first transparent layer opposite to the reflective layer; wherein each of the slant reflective surfaces is provided with a concavo-convex and is formed in a stripe shape when seen from a normal direction of the reference surface; and wherein the slant reflective surfaces are disposed so as to have angles to the reference surface, the angle changing with random variations in of range with respect to a certain central angle.

Transparent screen, video projection laminated plate, and video display system

A transparent screen, wherein a direction normal to a reference surface is defined as a first direction, a direction which is perpendicular to the first direction and in which each reflective inclined surface extends as seen from the first direction is defined as a second direction, and a direction which is perpendicular to the first direction and the second direction and in which the reflective inclined surfaces are arranged side by side is defined as a third direction, and in at least a part of an image projection area, to which the image is projected, in a section perpendicular to the second direction, the reflective inclined surfaces are formed so that inclination angles of the reflective inclined surfaces, measured on a per-respective reflective inclined surface basis, decrease, in a stepwise manner or continuously, away from one end in the third direction toward another end in the third direction.

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Tokyo, Japan

Tsuneo Ichimatsu