Optical film

摘要

An optical film includes a substrate, a plurality of first prism structures, and a plurality of second prism structures. The substrate includes a first surface and a second surface opposite thereto. The first prism structures are disposed on the first surface. Each of the first prism structures has plurality sets of first optical surfaces. The first optical surfaces belonging to the same set have the same absolute value of slope, and the first optical surfaces belonging to different sets have different absolute values of slopes, respectively. The second prism structures are disposed on the second surface. Each of the second prism structures has plurality sets of second optical surfaces. The second optical surfaces belonging to the same set have the same absolute value of slope, and the second optical surfaces belonging to different sets have different absolute values of slopes, respectively.

主权项

1. An optical film, comprising:
a substrate, having a first surface and a second surface opposite to the first surface; a plurality of first prism structures arranged on the first surface, wherein each of the first prism structures has plurality sets of first optical surfaces, the first optical surfaces belonging to the same set have the same absolute value of slope, and the first optical surfaces belonging to different sets have different absolute values of slopes, respectively; and a plurality of second prism structures arranged on the second surface, wherein each of the second prism structures has plurality sets of second optical surfaces, the second optical surfaces belonging to the same set have the same absolute value of slope, and the second optical surfaces belonging to different sets have different absolute values of slopes, respectively.