OPTICAL MEMBER, ILLUMINATION DEVICE, AND DISPLAY DEVICE

WIPO Patent Application WO/2014/010523

A1

An optical sheet (optical member) (20) is provided with: a sheet-shaped substrate (40) having light transmitting properties; anisotropic light-condensing parts (41) formed on a light-entry-side plate surface (40a) of the substrate (40), on which light is incident, for imparting a light-condensing effect in a light condensing direction along the light-entry-side plate surface (40a) to incident light, while having light-condensing anisotropy so that a light-condensing effect is not imparted in a non-light-condensing direction which is along the light-entry-side plate surface (40a) and orthogonal to the light condensing direction; and anisotropic light-diffusing parts (42) formed on a light-exit-side plate surface (40b) from which light exits, on the reverse side of the substrate (40) from the light-entry-side plate surface (40a), for causing light from the anisotropic light-condensing part (41) side to exit while scattering the light, the anisotropic light-diffusing parts (42) having light-scattering anisotropy so that the amount of scattered light in the non-light-condensing direction decreases as the amount of scattered light in the light condensing direction increases.

HIRAYAMA YOSHINOBU
IMAI AKIRA
YAGI SHUGO
INATA TORU
KAGEYAMA MASAKI
HATTA KAZUYA
EHARA MASANORI

PCT/JP2013/068480

January 16, 2014

July 05, 2013

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SHARP KK (JP)

G02B5/02; B32B3/30; B32B7/02; F21S2/00; F21V5/00; G02B3/00; G02F1/13357

JP2009157029A	2009-07-16
JP2009276382A	2009-11-26
JPH04220631A	1992-08-11
JP2000147264A	2000-05-26

AKATSUKI UNION PATENT FIRM (JP)
Patent business corporation dawn joint patent firm (JP)

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