Patent ID: 8031405

Claim:
An optical adjusting apparatus having a composite pattern structure, the optical adjusting apparatus comprising: a substrate layer having a first optical surface and a second optical surface opposite to the first optical surface; at least one first pattern module positioned on the first optical surface of the substrate layer, wherein the at least one first pattern module has a plurality of first structure units along a first arrangement direction; and at least one second pattern module which is adjacent to the at least one first pattern module and positioned on the first optical surface of the substrate layer, wherein the at least one second pattern module has a plurality of second structure units along a second arrangement direction, and wherein the first arrangement direction of the first structure units and the second arrangement direction of the second structure units therebetween have a predetermined angle for adjusting a convergent angle of a light beam from the second optical surface to the first optical surface of the substrate layer, and the predetermined angle between the first arrangement direction and the second arrangement direction has wherein areas of the at least one first pattern module and the at least one second pattern module respectively are adjusted to further modify the convergent angle of a light beam of the first optical surface.