公开(公告)号：EP0462361B1

公开(公告)日：1996-06-19

申请号：EP91103713.3

申请日：1991-03-11

申请人： ENPLAS CORPORATION

发明人： YOKOYAMA, KAZUAKI

IPC分类号： G02F1/1335

CPC分类号： G02B6/0043 ,  G02B6/0061 ,  G09F13/0409 ,  G09F2013/1813

公开(公告)号：EP0462361A1

公开(公告)日：1991-12-27

申请号：EP91103713.3

申请日：1991-03-11

申请人： ENPLAS CORPORATION

发明人： YOKOYAMA, KAZUAKI

IPC分类号： G02F1/1335

CPC分类号： G02B6/0043 ,  G02B6/0061 ,  G09F13/0409 ,  G09F2013/1813

摘要： A surface light source device comprising a linear light source (1), a light transmitting member (2) having an end surface of incidence located in the vicinity of said light source, a diffusing plate arranged on the front surface of said light transmitting member and a reflecting plate arranged on the rear surface of said light transmitting member; patterns formed as portions (6) having diffusing functions being arranged on the rear surface of said light transmitting member, and said portions having the diffusing function being sparse in area in the vicinity of the center of the end surface of incidence and becoming denser as the portions are farther from the end surface of incidence. The surface light source device is adapted so as to uniformalize luminance on the diffusing plate.

摘要翻译： 一种面光源装置，包括线性光源（1），具有位于所述光源附近的入射端面的透光构件（2），布置在所述透光构件的前表面上的漫射板和 布置在所述光传输构件的后表面上的反射板; 形成为具有扩散功能的部分（6）的图案被布置在所述透光部件的后表面上，并且具有扩散功能的部分在入射端面的中心附近的区域中稀疏，并变得更致密 部分距入射的端面更远。 面光源装置适于使扩散板上的亮度均匀化。