公开(公告)号：US06767105B2

公开(公告)日：2004-07-27

申请号：US10205447

申请日：2002-07-26

申请人： Sumio Nakahashi ,  Hirozumi Taguchi ,  Nozomu Bitou ,  Masaya Suzuki

发明人： Sumio Nakahashi ,  Hirozumi Taguchi ,  Nozomu Bitou ,  Masaya Suzuki

IPC分类号： G01D1128

CPC分类号： G02B6/0036 ,  G02B6/0051 ,  G02B6/0053 ,  G02B6/0061 ,  G02B6/0068 ,  Y10S385/901

摘要： A simple and inexpensive planar lighting device realizing a high luminance is provided, including: a light guide plate having a pair of opposite light entry faces, a light emitting face extending perpendicularly to the light entry faces, a plurality of hemispherical surfaces formed on the light emitting face, and a light non-emitting face opposite to the light emitting face; a light source disposed to extend along each of the light entry faces; a reflector for reflecting light from the light source toward a respective one of the light entry faces; a reflecting plate disposed to extend along the light non-emitting face for reflecting light leaking from the light guide plate toward the light guide plate; and a lens sheet disposed to extend along the light emitting face and formed with a plurality of first ridges extending parallel with the light entry faces on a face thereof opposite to the light emitting face, the first ridges each having a triangular section.

摘要翻译： 提供一种实现高亮度的简单且廉价的平面照明装置，包括：导光板，其具有一对相对的光入射面，垂直于光入射面延伸的发光面，形成在光上的多个半球面 发光面和与发光面相反的光不发光面; 光源，其设置成沿着每个所述光入射面延伸; 用于将来自所述光源的光朝向所述光入射面中的相应一个反射的反射器; 反射板，设置成沿着所述光不发射面延伸，用于将从所述导光板泄漏的光反射到所述导光板; 以及透镜片，其设置成沿着所述发光面延伸并且形成有与所述光入射面平行延伸的多个第一脊，所述第一脊在与所述发光面相对的面上延伸，所述第一脊各自具有三角形截面。