利索-全球专利检索

  1. 登录
  2. 注册
发明授权
US07365721B2 Projection display 有权
投影显示

Projection display
摘要：
The present invention provides an inexpensive projection display that allows a pixel grid as ineffective portions of respective pixels of a light valve to be made inconspicuous. The projection display includes a birefringent element (43) for spatially separating light from a transmission liquid crystal light valve (39). The birefringent element (43) includes a first birefringent plate (40) that the light from the liquid crystal light valve (39) enters, a second birefringent plate (41) that light from the first birefringent plate (40) enters, and a third birefringent plate (42) that light from the second birefringent plate (41) enters. A polarization direction of the light entering the first birefringent plate (40) forms an angle of n×45° (n is an integer other than 0) with an optic axis of the first birefringent plate (40) projected on an incident surface of the first birefringent plate (40). An optic axis of the second birefringent plate (41) projected on an incident surface of the second birefringent plate (41) is orthogonal to the optic axis of the first birefringent plate (40) projected on the incident surface of the first birefringent plate (40). An optic axis of the third birefringent plate (42) projected on an incident surface of the third birefringent plate (42) extends horizontally or vertically.
摘要（中）：

本发明提供了一种廉价的投影显示器，其允许将像素网格作为光阀的各个像素的无效部分不显眼。 投影显示器包括用于从透射液晶光阀（39）空间分离光的双折射元件（43）。 双折射元件（43）包括来自液晶光阀（39）的光入射的第一双折射板（40），来自第一双折射板（40）的光进入的第二双折射板（41）和第三双折射元件 来自第二双折射板（41）的光进入的双折射板（42）。 进入第一双折射板（40）的光的偏振方向与第一双折射板（40）的光轴投射在第一双折射率的入射表面上形成n×45°（n为0以外的整数）的角度 板（40）。 投影在第二双折射板（41）的入射面上的第二双折射板（41）的光轴与投射在第一双折射板（40）的入射面上的第一双折射板（40）的光轴正交 ）。 投影在第三双折射板（42）的入射面上的第三双折射板（42）的光轴水平或垂直地延伸。

公开/授权文献
信息查询
Espacenet
0/0