| 摘要 |
A plurality of microstructures is provided, with each microstructure having at least a first side and at least a second side terminating at a peak. At leas t some of the peaks can include an elevated portion to space the peaks away fr om adjacent optical sheets, surfaces, films, substrates, or other layers to minimize wet-out, Newton~s rings, abrasions, moiré fringes, or other undesirable optical conditions. In other embodiments, an optical film is als o provided that includes a first plurality of microstructures having a base, a first side, and a second side, and a second plurality of microstructures having a base, a first side, and a second side, the first side including a first planar surface, and the second side including a second planar surface and a third planar surface.
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