公开(公告)号：WO2003058339A1

公开(公告)日：2003-07-17

申请号：PCT/US2002/038634

申请日：2002-12-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY ,  KINGSLEY, Gary, B. ,  CONNER, Arlie, R.

Inventor： KINGSLEY, Gary, B. ,  CONNER, Arlie, R.

IPC: G02F1/1335

CPC classification number: H04N9/3158 ,  G02F1/133509 ,  G02F2001/133628 ,  H04N9/3108

Abstract: A single-panel LCD projection system (50) includes a color prefilter (52) positioned between an illumination system (54) and a multi-color LCD (56). The color prefilter (52) functions to shape the spectrum of illumination provided by the illumination system (54) so as to increase relative panel transmission and to reduce heat absorption by color component filters (58R, 58G, 58G) incorporated in the LCD. The color prefilter (52) is selected to eliminate from or greatly reduce in the illumination light the intensity of certain wavebands that do not materially contribute to generating pure primary colors.

Abstract translation: 单面LCD投影系统（50）包括位于照明系统（54）和多色LCD（56）之间的彩色预过滤器（52）。 颜色预过滤器（52）用于对由照明系统（54）提供的照明光谱进行调整，以增加相对面板的透射率，并减少结合在LCD中的彩色分量滤光器（58R，58G，58G）的吸热。 颜色预滤器（52）被选择为在照明光中消除或大大减少某些波段的强度，其不会有效地产生纯原色。

公开(公告)号：WO1997027512A1

公开(公告)日：1997-07-31

申请号：PCT/US1997001338

申请日：1997-01-27

Applicant: SARIF, INC. ,  BRICE, Stephen, E. ,  KINGSLEY, Gary, B. ,  PAYNE, David ,  SALSMAN, Kenneth, E.

Inventor： SARIF, INC.

IPC: G03B21/14

CPC classification number: H04N9/3105 ,  G02B27/1046 ,  G02B27/149 ,  G02B27/283

Abstract: An optical projector (10) is described that orients its optics engine vertically within an enclosure that is higher than it is wide or deep. The invented optics engine uses a prismatic cube for color separation or beam splitting, with prismatic elements within the cube being secured within a durable frame that mounts three color light valves in a predefined position and orientation relative to the prismatic cube. In order to improve image quality and brightness, red and blue beams are S-polarized, as is conventional, but the green beam is P-polarized. The projector preferably includes a frame (12) having a footing portion (14) for resting on a support surface, a light source high above the footing portion, optical convolution structure (24) downstream from the light source for reverse-bending downwardly flowing light from the source, light modulation structure (46) near the reverse bend region for infusing the ligth with image information and for directing modulated light upwardly in a projectable, image-containing stream of light and outward-projection directing structure high on the frame for receiving and outwardly directing such stream of light.

Abstract translation: 描述了一种光学投影仪（10），其将光学引擎垂直定向在高于其宽或深的外壳内。 本发明的光学引擎使用棱镜立方体进行颜色分离或光束分裂，立方体内的棱镜元件被固定在耐用框架内，将三色光阀安装在相对于棱柱形立方体的预定位置和取向。 为了提高图像质量和亮度，红色和蓝色光束是常规的S偏振光，但是绿色光束是P偏振光。 投影仪最好包括一个框架（12），该框架（12）具有用于搁置在支撑表面上的基脚部分（14），高于基脚部分的光源，光源的下游的光学卷积结构（24），用于反向弯曲向下流动的光 从光源调制结构（46）靠近反向弯曲区域，用于将图像信息注入到图像信息中并用于将调制光向上引导到可投影的含图像的光流中并且向外投影指向结构在框架上高接收 并向外引导这样的光流。