公开(公告)号：US20090161387A1

公开(公告)日：2009-06-25

申请号：US12197312

申请日：2008-08-25

Applicant: Ching-Hua SU

Inventor： Ching-Hua SU

IPC: F21V7/04

CPC classification number: G02B6/0038 ,  G02B6/0068

Abstract: A light guide plate includes a transparent body, a plurality strip-shaped light diffusion structures and a plurality of strip-shaped light-collecting structures. The transparent body has a first light exit surface and a light incident surface adjacent to the first light exit surface. The strip-shaped light diffusion structures convexly extend from the first light exit surface of the transparent body and each of the strip-shaped light diffusion structures has a second light exit surface distant from the first light exit surface. The strip-shaped light-collecting structures correspond to the strip-shaped light diffusion structures, and each of the strip-shaped light-collecting structures convexly extends from the second light exit surface of the corresponding strip-shaped light diffusion structure. A cross-sectional shape of each of the strip-shaped light-collecting structures is approximately symmetrical with respect to a central normal plane of the corresponding second light exit surface. Furthermore, a surface lighting device using the above-mentioned light guide plate is also provided.

Abstract translation: 导光板包括透明体，多个条状光扩散结构和多个条形聚光结构。 透明体具有与第一光出射面相邻的第一光出射面和光入射面。 带状光漫射结构从透明体的第一光出射面凸出地延伸，并且每个条形光漫射结构具有远离第一光出射表面的第二光出射表面。 带状集光结构对应于条形光扩散结构，并且每个条形聚光结构从相应的带状光漫射结构的第二光出射表面凸出地延伸。 每个条形集光结构的横截面形状相对于相应的第二光出射表面的中心法线大致对称。 此外，还提供了使用上述导光板的表面照明装置。