发明名称 |
Surface light source and liquid crystal display, portable telephone and information terminal employing the surface light source |
摘要 |
In a surface light source device using a so-called point light source, the luminance distribution is made uniform, and the luminance thereof is increased. The direction of each of a plurality of diffuse pattern elements 24a constituting a diffuse pattern 24 formed on the lower surface of an optical waveguide plate 22 (a direction along the length) is at an angle of approximately 90° to a direction along the line connecting the diffuse pattern element 24a and a point light source 30. The density Á of the diffuse pattern elements is approximately zero in the vicinity of the point light source 30, while linearly increasing as the distance from the point light source 30 increases. |
申请公布号 |
AU4724397(A) |
申请公布日期 |
1998.05.22 |
申请号 |
AU19970047243 |
申请日期 |
1997.10.27 |
申请人 |
OMRON CORPORATION |
发明人 |
MASAYUKI SHINOHARA;SHIGERU AOYAMA |
分类号 |
F21V8/00;G02B6/00;G02F1/13357 |
主分类号 |
F21V8/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|