Patent ID: 8157429
Filing Date: 2012-04-17
Classification: G02B,G02F

Abstract:
1. An optical sheet comprising: a base layer including a first surface a second surface opposite the first surface, and a plurality of sides extending between the first and second surfaces, the plurality of sides including at least one longitudinal side and at least one vertical side being perpendicular to one another; a light-condensing layer including a plurality of light-condensing portions formed on the second surface along a first direction crossing the longitudinal side and the vertical side, the light-condensing portions being extended in a second direction crossing the first direction at a angle with respect to the longitudinal side and the vertical side, a plurality of recesses being formed where the light-condensing portions meet each other; and a plurality of light-reflecting portions being formed in the first surface in correspondence with the plurality of recesses, the centers of the light-reflecting portions being off set from the recesses along the first direction regardless of position on the first surface.