LIGHT-GUIDING PLATE AND LIGHTING DEVICE

WIPO Patent Application WO/2011/093262

A1

Disclosed is a light-guiding plate (200) comprising a light introduction face (203) that introduces light; a light extraction face (201) wherein light that is introduced by the light introduction face (203) is extracted; and a rear face (202) that is located opposite to the light extraction face (201). The light-guiding plate (200) is partitioned into a plurality of regions (205, 206), wherein the plurality of regions (205, 206) from among the partitioned regions are respectively anisotropic light extraction regions with higher light extraction efficiencies of light that is guided in parallel to prescribed virtual axes (X, Y) than light extraction efficiencies of light that is guided in a direction that is orthogonal to the virtual axes (X, Y). The location of at least one site (205) from among the anisotropic light extraction regions is location adjusted such that light that is introduced from the corresponding light introducing region (203) within the light-guiding plate (200) arrives at the anisotropic light extraction region (205) via another anisotropic light extraction region (206) with a different virtual axis direction therefrom.

SUZUKI TOSHIAKI (JP)
TSUKADA KEISUKE (JP)

PCT/JP2011/051302

August 04, 2011

January 25, 2011

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ZEON CORP (JP)
SUZUKI TOSHIAKI (JP)
TSUKADA KEISUKE (JP)

F21S2/00; F21Y101/02

WO2009084894A1

2009-07-09

JP2010204256A	2010-09-16
JP2007293339A	2007-11-08

SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)

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