Title:
DIRECT BACKLIGHT APPARATUS
Document Type and Number:
WIPO Patent Application WO/2008/015908
Kind Code:
A1
Abstract:
Provided is a direct backlight apparatus which has sufficient luminance in a
front direction, suppresses luminance nonuniformity on a light emitting surface
and reduces power consumption. The direct backlight apparatus is provided
with a linear light source (2), a reflecting plate (3) and a light diffusing member
(1). A distance (a) between the center of the adjacent linear light sources (2)
is 30mm-65mm. The light diffusing member (1) has a substantially flat light
entrance surface (1A) and a light outgoing surface (1B) whereupon a plurality
of linear prisms (4) are arranged. The linear prism (4) has two inclined surfaces
(4A) having substantially the same inclination angles to a surface vertical
to the thickness direction of the light diffusing member (1). The relationship
of a/7
Inventors:
KUSANO, kenji (ZEON CORPORATION, 6-2 Marunouchi 1-chome, Chiyoda-k, Tokyo 46, 1008246, JP)
Application Number:
JP2007/064147
Publication Date:
February 07, 2008
Filing Date:
July 18, 2007
Export Citation:
Assignee:
ZEON CORPORATION (6-2 Marunouchi 1-chome, Chiyoda-ku Tokyo, 46, 1008246, JP)
日本ゼオン株式会社 (〒46 東京都千代田区丸の内一丁目６番２号 Tokyo, 1008246, JP)
日本ゼオン株式会社 (〒46 東京都千代田区丸の内一丁目６番２号 Tokyo, 1008246, JP)
International Classes:
F21S2/00; F21V5/02; G02F1/13357; F21Y103/00
Attorney, Agent or Firm:
SAITO, Keisuke (Takou Building Kudan 6F, 8-5 Iidabashi 2-chom, Chiyoda-ku Tokyo 72, 1020072, JP)
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