公开(公告)号：US06917469B2

公开(公告)日：2005-07-12

申请号：US10874323

申请日：2004-06-24

申请人： Yoshiaki Momose ,  Kimio Itou ,  Mitsuhiro Akiyama ,  Takashi Hanne

发明人： Yoshiaki Momose ,  Kimio Itou ,  Mitsuhiro Akiyama ,  Takashi Hanne

IPC分类号： G03B21/62 ,  G03B21/60

CPC分类号： G03B21/625

摘要： A light diffusing laminated plate including a first light diffusing layer containing particles of a transparent light diffusing material dispersed therein and having a concave cross-section, and a second light diffusing layer containing particles of an opaque light diffusing material dispersed therein and having a convex cross-section. The first and second light diffusing layers are laminated together such that the convex and concave surfaces are face to face contact with each other to form a curved interface therebetween. The first and second light diffusing layers have a substantially uniform cross-section in one direction. A transmissive screen for a rear projection display device having a light image source, including the above light diffusing laminated plate and a lens system disposed such that a light image from the source is projected through the light diffusing laminated plate and the lens system and displayed on the screen.

摘要翻译： 1.一种光扩散层叠板，其特征在于，具有包含分散在其中的具有凹状截面的透明光漫射材料粒子的第一光漫射层的光漫射层叠板，和含有分散于其中且具有凸交叉的不透明光漫射材料粒子的第二光漫射层 -部分。 第一和第二光漫射层被层压在一起，使得凸表面和凹面彼此面对面接触以在它们之间形成弯曲的界面。 第一和第二光漫射层在一个方向上具有基本均匀的横截面。 一种具有光源图像源的背投影显示装置的透射屏幕，包括上述光漫射层压板和透镜系统，其设置成使得来自源的光图像通过光扩散层压板和透镜系统投影并显示在 屏幕。