公开(公告)号：US06295405B1

公开(公告)日：2001-09-25

申请号：US09137549

申请日：1998-08-20

申请人： Tomasz P. Jannson ,  Stephen A. Kupiec ,  Jeffrey A. Laine ,  Michael Rud ,  Anatoly Vasiliev

发明人： Tomasz P. Jannson ,  Stephen A. Kupiec ,  Jeffrey A. Laine ,  Michael Rud ,  Anatoly Vasiliev

IPC分类号： G02B610

CPC分类号： G02B6/0018 ,  G02B6/0001 ,  G02B6/0065 ,  G02B6/4298 ,  Y10S385/901

摘要： A non-scattering light pipe includes a transition surface between a first side wall and an input surface and a second side wall and the input surface. The transition surface is arranged to substantially obscure the corner interfaces between the first and second side walls and the input surface such that in the corner formation any imperfections therein are not imaged into the output. Most preferably, the transition surface is optimized to provide a substantially uniform light intensity distribution. A light pipe in accordance with the preferred embodiments of the present invention is further arranged to couple to a linear light source, such as a cold cathode fluorescent light (CCFL). The light source is arranged such that dim areas, i.e., areas of the light source having non-uniform intensity, are not disposed adjacent the input surface.

摘要翻译： 非散射光管包括在第一侧壁和输入表面之间的过渡表面以及第二侧壁和输入表面。 过渡表面布置成基本上模糊第一和第二侧壁与输入表面之间的拐角界面，使得在角部形成中，其中的任何缺陷都不会成像到输出中。 最优选地，过渡表面被优化以提供基本均匀的光强度分布。 根据本发明的优选实施例的光管还被布置成耦合到线性光源，例如冷阴极荧光灯（CCFL）。 光源被布置成使得暗区域，即具有不均匀强度的光源的区域不邻近输入表面设置。