公开(公告)号：US20140176873A1

公开(公告)日：2014-06-26

申请号：US14138890

申请日：2013-12-23

Applicant: OMRON Corporation

Inventor： Masayuki Shinohara ,  Kazuhide Hirota ,  Tomokazu Kitamura ,  Takako Ishikawa

IPC: F21V8/00

CPC classification number: G02B6/0016 ,  G02B6/0018 ,  G02B6/002 ,  G02B6/0038

Abstract: A light guide plate has a light introduction part having an end face configured to have light incident thereon, and a light guide plate body provided continuously to the light introduction part and comprising a thickness smaller than maximum thickness of the light introduction part. The light guide plate body has a light emitting surface configured to emit light incident from the end face. A directivity conversion pattern is provided on at least one of a face on a light exit side and a face opposite to the face. The directivity conversion pattern converts directivity spread in a thickness direction of the light introduction part to a directivity characteristic which is inclined in a direction parallel to a face direction of the light introduction part. A light reflection wall is provided on the end face.

Abstract translation: 导光板具有配置成具有入射光的端面的导光部和连续配置在光导入部的导光板本体，其厚度小于光导入部的最大厚度。 导光板体具有被配置为发射从端面入射的光的发光面。 在光出射面上的面和与面相反的面中的至少一个上设置方向性转换图案。 指向性变换图案将在光导入部的厚度方向上扩展的方向性转换为与光导入部的面方向平行的方向倾斜的方向性特性。 端面上设有光反射壁。