Patent ID: 11960111
Assignee: RADIANT OPTO-ELECTRONICS CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G | IPC F

Claim 0:
1. An optical film, comprising:
a main body having a first optical surface and a second optical surface opposite to each other;
a plurality of first prism structures disposed on the first optical surface, wherein each of the first prism structures has a first extending direction; and
a plurality of second prism structures disposed on the second optical surface, wherein each of the second prism structures has a second extending direction; and
wherein the first extending direction is different from the second extending direction;
wherein after a light enters the main body from one of the first optical surface and the second optical surface, and is emitted from another one of the first optical surface and the second optical surface, a portion of the light is emitted along a front view direction, another portion of the light is emitted along a side view direction, wherein a ratio of a light luminance from the side view direction to a light luminance from the front view direction is greater than 0.4, comprising an endpoint value.