Sony Corporation

Nobuaki Kuribara

Katsuyuki Akutsu

Teppei Imamura

Koya Nomoto

Nobuo Suematsu

Akira Koshimura

Yoshinari Kawashima

Kazuhito Kunishima

Shiro Sugawara

Youhei Yamazaki

An image display device includes an image generating device, a light guide unit, and a light beam expanding device. The light guide unit includes a light guide plate, a first deflector, and a second deflector. The light beam expanding device expands a light beam incident from the image generating device along the Z direction and outputs the light beam to the light guide unit when the incident direction of light incident on the light guide plate is defined as the X direction and the propagation direction of light in the light guide plate is defined as the Y direction. The light beam expanding device is composed of a first reflective mirror on which light from the image generating device is incident and a second reflective mirror on which light from the first reflective mirror is incident and that outputs light to the light guide unit.

Light beam expanding device, image display device, and optical device

A light guide includes an incident surface, an emitting surface, a reflecting surface, and a light guide section. The incident surface receives light from a plurality of light-emitting elements arranged at least in a first direction. The emitting surface outputs incident light from the incident surface. The reflecting surface includes a plurality of lenses having optical power in the first direction and a second direction different from the first direction and is provided to be opposed to the incident surface. The light guide section includes a surface including the incident surface, the emitting surface, and the reflecting surface, and causes the light that has entered from the incident surface to be reflected by the plurality of lenses of the reflecting surface to guide the light to the emitting surface.

Light guide, light source apparatus, and reading apparatus

A light guiding plate includes: an X axis direction light distribution control section; and a diffuse reflection section. The X axis direction light distribution control section performs light distribution control by which the incident light is deflected such that a tilt of an X axis direction with respect to a normal direction approaches to zero, and outputted from the light emitting surface. A direction of the incident light is the X axis direction, a direction orthogonal to the X axis direction and parallel to the light emitting surface is a Y axis direction, and a direction vertical to the X axis direction and the Y axis direction is the normal direction. The diffuse reflection section reflects the guided incident light from the light incident surface to diffuse in the Y axis direction inside of the light guiding plate and guides to the X axis direction light distribution control section.

Light guiding plate and backlight apparatus

Growing community of inventors

Saitama, Japan

Nobuaki Kuribara