Patent ID: 7794129

Claim:
A two-dimensional controllable localized partition backlight module optical element apparatus having a light-collecting function and an output-light-field-pattern being the same with the contour of the optical unit, comprising: a light guide having a metal reflective layer thereon, the light guide comprising: a plurality of optical units, comprising: a point light source; a central hole; a first light incident surface of the light guide around the central hole; and a first light output surface of light guide with an edge and a bottom surface of the light guide, wherein the bottom surface of the light guide has a plurality of light guide micro structures, the plurality of light guide micro structures being selected from the group consisting of a concave curve structure, a convex curve structure and a polygonal structure, and a first pattern direction of the light output surface micro structures being selected from the group consisting of a light-shaft symmetry direction and a light-shaft asymmetry direction, the point light source being located at the central hole of the optical unit; and a collimating sheet having a square contour based on a contour of the light guide and the collimating sheet being located at a top of the light guide, comprising: a second light incident surface of the light guide; and a second light output surface of the light guide having a plurality of the second light output surface micro structures being selected from the group consisting of a concave curve structure, a convex curve structure and a polyhedral structure on the second light output surface of the light guide, a second pattern direction of the second light output surface micro structures being selected from the group consisting of a light-shaft symmetry direction and a light-shaft asymmetry direction around the point light source being the center, so that when an output light leaving the first light output surface of the light guide at a specific angle, and irradiating to the second light incident surface of the light guide, an output light being controlled at a normal line direction of the collimating sheet by through two times of refraction, on order to reach a light collecting effect, therefore the collimating sheet is connected to the optical unit to form the two-dimensional controllable localized partition backlight module optical element apparatus.