发明名称 LIGHT GUIDE PLATE AND SURFACE LIGHT SOURCE DEVICE
摘要 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.
申请公布号 US2014176873(A1) 申请公布日期 2014.06.26
申请号 US201314138890 申请日期 2013.12.23
申请人 OMRON Corporation 发明人 Shinohara Masayuki;Hirota Kazuhide;Kitamura Tomokazu;Ishikawa Takako
分类号 F21V8/00 主分类号 F21V8/00
代理机构 代理人
主权项 1. A light guide plate comprising: a light introduction part comprising 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, wherein the light guide plate body comprises a light emitting surface configured to emit light incident from the end face, wherein 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, wherein 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, wherein a light reflection wall is provided on the end face, and wherein the light reflection wall has, when viewed from a direction perpendicular to the light emitting surface, an angle formed by a region close to the end face and a direction perpendicular to the end face being smaller than an angle formed by a region far from the end face and the direction perpendicular to the end face.
地址 Kyoto-shi JP
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