Sony Corporation

Yoshinari Kawashima

Toshio Watanabe

Isao Ichimura

Kazuhito Shimoda

Shinichi Kai

Nobuo Suematsu

Junichi Ohsako

Takashi Oku

Masato Hatanaka

Akira Koshimura

Nobuaki Kuribara

Shiro Sugawara

Youhei Yamazaki

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

Provided are a reflective liquid crystal display and a light guide plate capable of eliminating a decline in virtual contrast properties of a display screen in a reflective liquid crystal display comprising a light guide plate with a prism unit so as to display an excellent image. An antireflective film ( ) is formed on a planar surface of a light guide plate ( ) which is disposed so as to face a viewing side of a liquid crystal display panel ( ). The antireflective film ( ) inhibits light reflection on the planar surface of the light guide plate ( ). Moreover, an adhesive layer ( ) is provided to improve the adhesion of the antireflective film ( ) to the planar surface of the light guide plate ( ).

Reflective display, light guide plate and method of manufacturing light guide plate

Systems and methods of the present invention are directed to an optical element that includes a diffraction grating, an inclined surface, good optical characteristics, and an optical element manufacturing metal die. The optical element manufacturing metal die is capable of injection molding of an optical element having a complex structure. Further, the optical element manufacturing metal die includes nestings that have a plurality of mirror surface forming portions. The pluralilty of mirror surface forming portions include a plurality adjoining pairs of mirror surfaces. The plurality of mirror surface forming portions are molded by two adjoining pairs of the plurality of adjoining pairs of mirror surface forming portions, which are formed on the same nesting. At least one of the plurality of mirror surface forming portions are formed by a mirror surface grinding method. The optical element manufacturing metal die also includes a nesting having a diffraction grating forming portion in which a predetermined concave-convex pattern for molding the diffraction grating is formed on a surface of a substrate.

Optical element, its manufacturing method and optical element manufacturing metal die

An optical element having a complex structure of diffraction grating, an inclined surface, a difference in level and the like and of good optical characteristics, its manufacturing method, and an optical element manufacturing metal die capable of injection molding the optical element are disclosed. By using an optical element manufacturing metal die constituted to have nestings which have mirror surface forming portions two adjoining pairs of mirror surfaces of the optical element are molded by two adjoining pairs of mirror surface forming portions which are formed on the same nesting. The optical element manufacturing metal die is constituted to include the nesting having a diffraction grating forming portion in which a predetermined concave-convex pattern for molding the diffraction grating of the optical element is formed on one surface of a substrate.

Optical element, its manufacturing method and optical element manufacture metal die

Growing community of inventors

Kanagawa, Japan

Yoshinari Kawashima