Omron Corporation

Takuma Iwase

Masayuki Shinohara

Yasuhiro Tanoue

Norikazu Kitamura

Gouo Kurata

Yoshihiro Ueno

Kazuhide Hirota

Koichi Takemura

Jun Kishimoto

Hiroyuki Miyamoto

Takako Ishikawa

Morihisa Ota

Yukihiro Takahashi

Norihisa Kanzaki

Yoshihiko Takagi

Mitsuru Okuda

Kazuyuki Okada

Takaaki Suzumura

Takahiro Morichi

An optical device has a light guide plate configured to guide light within a plane parallel to an emission surface thereof, and a plurality of optical deflectors arranged two-dimensionally within a plane parallel to the emission surface. Each of the optical deflectors deflects light propagating through the light guide plate, and causes the emission surface to output light forming an image in a space. Each of the optical deflectors is configured to spread the light incident thereon that has an intensity distribution corresponding to an image in a direction orthogonal to the light guide direction of the light guide plate in a plane parallel to the emission surface, and cause the emission surface to output the light which groups the light from the plurality of optical deflectors arranged along a direction orthogonal to the light guide direction, such that light radiating from the image is formed.

Optical device

A display device includes a transparent liquid crystal panel configured to allow an object arranged at the rear surface to be viewed from the front surface; a first polarizer arranged on at least one of the front surface and the rear surface of the transparent liquid crystal panel; a light source; a light guide element arranged at the other of the front surface and the rear surface of the transparent liquid crystal panel; a second polarizer arranged between the light guide element and the transparent liquid crystal panel, or between the light guide element and the light source and arranged to not block at least a portion of light transmitted through the light guide element via the object; and a controller.

Display device

A light guide plate has a light incident surface configured to be arranged facing a point light source for introducing light from the point light source, a light outputting surface that outputs the light to an outside of the light guide plate, a light introducing section for confining the light from the point light source entered from the light incident surface, and a light guide plate main body having a thickness smaller than a maximum thickness of the light introducing section and being arranged to be continuous with the light introducing section, for outputting the confined light to the outside of the light guide plate from the light outputting surface by a light outputting element.

Surface light source apparatus

A light guide plate () includes a light introducing section (), which is at a position facing a point light source (), for confining light from the point light source, and a light guide plate main body (), which has a thickness smaller than a thickness at an end of the light introducing section on the point light source side, for outputting the confined light to an outside from a light outputting surface by light outputting means (). The light introducing section () has an inclined surface (), which is inclined from a surface of the light introducing section towards a surface of the light guide plate main body (). The inclined surface () has a directivity converting pattern () for converting a directivity expansion in a thickness direction of the light guide plate of the light entered to the light introducing section () to directivity characteristics tilted towards a direction parallel to a surface direction of the light guide plate. The directivity converting pattern () has a structure in which a plurality of V-shaped groove structures () are lined.

Growing community of inventors

Ritto, Japan

Takuma Iwase