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1. (WO2007049511) BACKLIGHT DEVICE, DISPLAY DEVICE AND OPTICAL MEMBER

Pub. No.:    WO/2007/049511    International Application No.:    PCT/JP2006/320930
Publication Date: Fri May 04 01:59:59 CEST 2007 International Filing Date: Sat Oct 21 01:59:59 CEST 2006
IPC: F21S 2/00
F21V 5/04
G02F 1/13357
F21Y 101/02
F21Y 103/00
Applicants: HITACHI MAXELL, LTD.
日立マクセル株式会社
YAMADA, Yukinori
山田 幸憲
SATO, Masataka
佐藤 暢高
Inventors: YAMADA, Yukinori
山田 幸憲
SATO, Masataka
佐藤 暢高
Title: BACKLIGHT DEVICE, DISPLAY DEVICE AND OPTICAL MEMBER
Abstract:
a backlight device (10) is provided with an optical member (17) laid on a planar light source. The optical member (17) is provided with a lenticular lens sheet (14) having a plurality of cylindrical lenses (CL1) arranged in parallel, and a lenticular sheet (15) which is laid on the lenticular lens sheet (14) and has a plurality of cylindrical lenses (CL2) arranged in parallel. Thus, light emitted in a diagonal direction to the front is suppressed and high front luminance is provided.