Light diffusive sheet

Details Light diffusive sheet Light diffusive sheet

2005-11-08

2005-11-08

Nguyen, Thong Q (Department: 2872)

Optical: systems and elements

Diffusing of incident light

C359S613000, C359S831000, C362S035000

Reexamination Certificate

active

06963451

ABSTRACT:
The invention provides a sheet (1) comprising a light-transmittable resin, in which irregularities are formed on both sides (1a) and (1b) of the sheet, the average surface roughness of one side (1a) which becomes the light-entering side is from 0.2 to 5.0 μm and larger than the average surface roughness of the opposite side (1b) that becomes the light-departing side, wherein the average surface roughness of the opposite side (1b) is from 0.2 to 2.0 μm, and the surface area ratio of the one side (1a) is smaller than the surface area ratio of the opposite side (1b).

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