Fujitsu Corporation

Takao Satake

Hirokazu Aritake

Satoshi Maeda

Chikara Nishio

Susumu Fujiwara

In the lighting device, cylindrical lenses are provided on a reflection surface side of a light guide plate, and the adjacent cylindrical lenses are connected by a concaved curved surface.

Lighting device

A lighting device including a light guide plate, a light source unit disposed on the side of the light guide plate and a polarization separation element disposed between the light guide plate and the light source unit. The polarization separation element is used for transmitting linearly polarized light in a first polarized direction and reflecting linearly polarized light in a polarized direction normal to the first polarized direction. The light source unit includes a pillar-shaped light guide which light exits at a first side surface, a spot light emission source disposed on the end surface of the pillar-shaped light guide, and a reflecting layer disposed on a second side surface of a prism surface opposed to the first side surface for reflecting light from the spot light emission source.

Lighting device and liquid crystal display device

A lighting apparatuscomprising light sourcesfor emitting light, a plurality of light reflection portionsformed on the reflection side for reflecting light incident from the light sources, and a linear photoconductorfor causing the light to exit from the exit side opposed to the reflection side, the planes of the plurality of reflection portions being respectively tilted at angles which converge the light to the human eyes watching. Angles of the light reflection portions are set so that exit angles of light exiting from the linear photoconductor are required angles, whereby the lighting apparatus can have a uniform light intensity distribution. The application of the lighting apparatus can provide a liquid crystal display of good display characteristics.

Growing community of inventors

Yokohama, Japan

Takao Satake