公开(公告)号：US20050140932A1

公开(公告)日：2005-06-30

申请号：US11052633

申请日：2005-02-07

申请人： Simon Magarill ,  Charles Bruzzone ,  Stephen Eckhardt ,  R. English ,  E. Fulkerson ,  Jiaying Ma ,  Todd Rutherford

发明人： Simon Magarill ,  Charles Bruzzone ,  Stephen Eckhardt ,  R. English ,  E. Fulkerson ,  Jiaying Ma ,  Todd Rutherford

IPC分类号： G02B5/04 ,  G02B5/30 ,  G02B27/28 ,  G03B21/00 ,  G03B21/14

CPC分类号： G02B5/3033 ,  G02B5/3058 ,  G02B27/283

摘要： A compound polarization beam splitter (33) for use with a reflective, polarization-modulating, imaging device (10), e.g., a LCoS device, is provided. The compound PBS has: (a) an input prism (20); (b) an output prism (30), and (c) a polarizer (13), which is located between the two prisms (20,30) and which may be a wire grid polarizer (13a) or a multi-layer reflective polarizer (13b). Polarized illumination light (11) enters the input prism (20) through a first surface (21) and undergoes total internal reflection at a second surface (22) before being reflected from the polarizer (13) and polarization-modulated at the imaging device (10). The polarizer's tilt angle (β) is less than 45°, which reduces astigmatism and the required back working distance of the system's projection lens (74).

公开(公告)号：US20050063073A1

公开(公告)日：2005-03-24

申请号：US10665950

申请日：2003-09-19

申请人： Robin Glassburn ,  E. Fulkerson ,  Michael Larson ,  David Snively ,  Donald Keyes ,  Brian Dawes ,  Daniel Meiser

发明人： Robin Glassburn ,  E. Fulkerson ,  Michael Larson ,  David Snively ,  Donald Keyes ,  Brian Dawes ,  Daniel Meiser

IPC分类号： G02B13/16 ,  H04N5/74 ,  G02B7/02

CPC分类号： G02B13/16 ,  H04N9/3141

摘要： A lens assembly adapted to be connected to a CRT and affixed to mounting structure in a projection television cabinet. The lens assembly includes a tubular lens mount having a longitudinal axis and at least a first optical lens element mounted along the longitudinal axis. A tubular focus mount extends along the longitudinal axis and fastening and locking structure connects the lens mount to the focus mount after a focus mount position is obtained. A CRT coupler is formed integrally with the focus mount and includes structure for securing a CRT and for securing the coupler to the mounting structure within the television cabinet. A second optical lens element is mounted to the CRT coupler. A flexible bladder may be used to contain coolant fluid between the CRT and the coupler. A flange may be provided to set a Scheimpflug angle between the CRT and the coupler. A clamp plate for the second optical lens element may include a generally rectangular opening providing a 4:3 or 16:9 mask for the image transmitted by the CRT.

摘要翻译： 一种适于连接到CRT并固定在投影电视机柜中的安装结构的透镜组件。 透镜组件包括具有纵向轴线的至少一个第一光学透镜元件的纵向轴线安装的管状透镜座。 管状聚焦装置沿着纵向轴线延伸，并且紧固和锁定结构在获得聚焦安装位置之后将透镜支架连接到聚焦装置。 CRT耦合器与聚焦架一体地形成，并且包括用于固定CRT并且用于将耦合器固定到电视机柜内的安装结构的结构。 第二光学透镜元件安装到CRT耦合器。 可以使用柔性气囊来容纳CRT和耦合器之间的冷却剂流体。 可以提供凸缘以在CRT和耦合器之间设置Scheimpflug角。 用于第二光学透镜元件的夹板可以包括大致矩形的开口，为由CRT传输的图像提供4：3或16：9掩模。