公开(公告)号：US07349154B2

公开(公告)日：2008-03-25

申请号：US10833764

申请日：2004-04-27

申请人： Tomoyuki Aiura ,  Shuichi Yoshinaka ,  Takao Abumi ,  Haruhisa Takiguchi

发明人： Tomoyuki Aiura ,  Shuichi Yoshinaka ,  Takao Abumi ,  Haruhisa Takiguchi

IPC分类号： G03B21/56 ,  G03B21/60

CPC分类号： G03B21/56

摘要： The reflection type screen comprises a reflection layer which is disposed on the opposite side to the projected light incident side of the screen, a horizontal view angle increasing layer which is disposed on the light incident side of the reflection layer, and a diffusion layer which is disposed on the light incident side of the horizontal view angle increasing layer. The horizontal view angle increasing layer has an array of convex ridges which are raised in a rear direction of the screen. Since the longitudinal direction of the ridges is aligned with the vertical direction of the screen, the view angle characteristics of the screen in a horizontal direction are improved and the diffusion characteristics of the screen in a vertical direction can be suppressed for preventing external disturbing light from an upper illumination light from being reflected toward the observers.

摘要翻译： 反射型屏幕包括设置在与屏幕的投射光入射侧相反的一侧的反射层，设置在反射层的光入射侧的水平视角增加层和扩散层， 设置在水平视角增加层的光入射侧。 水平视角增加层具有在屏幕的后方向上升起的凸脊阵列。 由于脊的纵向与屏幕的垂直方向一致，所以屏幕在水平方向上的视角特性得到改善，并且可以抑制屏幕在垂直方向上的扩散特性，以防止屏幕的外部干扰光 上部照明光被朝向观察者反射。