Patent ID: 7470047
Filing Date: 2008-12-30
Classification: F21V

Abstract:
1. A light device with an integration sheet, comprising: a light source; and at least one sheet, each sheet being disposed at the light emitting end of the light source and comprising a plurality of light diffusion zones, wherein each light diffusion zone has a plural arrays of microstructures arranged on the surface thereof, and each array of microstructures is capable of changing the diopter of the corresponding light diffusion zone, wherein each light diffusion zone is configured to collimate the scattered light beams to incident on an intended illuminating area and diffuse the light beams emitting from the center of the tight source to incident on the intended illuminating area by the selection of zone partitions formed on each sheet, wherein the each diffusion zone includes a plurality of microstructures formed on each sheet, the microstructures being configured to produce uniformly distributed luminance by varying base widths of the microstructures.