Patent ID: 8040461

Claim:
A compound diffusion plate structure having a light-emitting unit generating a first optical path and a second optical path, comprising: a body unit, which has a light entrance plane and a light exit plane; a plurality of convex lens units having a plurality of first structures and second structures, wherein the first structures and the second structures are arranged on the light entrance plane, the first structures are adjacent to each other, every two second structures are separated from each other by a predetermined gap, and the first structures correspond to the light-emitting unit; and a micro structure lens diffusion unit arranged on the light exit plane; wherein when one part of the first optical path passes through the first structures, the one part of the first optical path is refracted by the first structures and the body unit and is transmitted to the micro structure lens diffusion unit to generate divergence; wherein when the second optical path passes through the second structures, the second optical path is refracted by the second structures and the body unit and is transmitted to the micro structure lens diffusion unit to generate divergence.