公开(公告)号：US6097546A

公开(公告)日：2000-08-01

申请号：US104206

申请日：1998-06-25

申请人： Syouichi Yoshii ,  Syunichi Kishimoto ,  Yukinori Kuwano

发明人： Syouichi Yoshii ,  Syunichi Kishimoto ,  Yukinori Kuwano

IPC分类号： H04N5/74 ,  H04N9/31 ,  G02B3/00

CPC分类号： H04N9/3105 ,  H04N5/7441

摘要： A projection optical unit comprises a frame, a projection lens, a dichroic prism for synthesizing red image light, green image light and blue image light, and three liquid crystal display panels for red, green and blue. A lens mounting portion on which the projection lens is mounted, a prism mounting portion on which the dichroic prism is mounted, and three mounting surfaces on which the three liquid crystal display panels are respectively mounted are formed in the frame. The projection lens, the dichroic prism, and the three liquid crystal display panels are mounted on the frame. The three liquid crystal display panels are mounted through a focus adjusting mechanism comprising a belleville spring and a screw. The two liquid crystal display panels for red and blue are further subjected to CG adjustment (adjustment for matching pixels of the liquid crystal display panels for read and blue with pixels of the liquid crystal display panel for green) by an eccentric screw.

摘要翻译： 投影光学单元包括框架，投影透镜，用于合成红色图像光的二向色棱镜，绿色图像光和蓝色图像光，以及三个用于红色，绿色和蓝色的液晶显示面板。 安装有投影透镜的透镜安装部分，安装有二向色棱镜的棱镜安装部分和在其中分别安装三个液晶显示面板的三个安装表面形成在框架中。 投影透镜，二向色棱镜和三个液晶显示面板安装在框架上。 三个液晶显示面板通过聚焦调节机构安装，该调焦机构包括百叶窗弹簧和螺钉。 用于红色和蓝色的两个液晶显示面板进一步进行CG调整（通过偏心螺钉调整用于读取和蓝色的液晶显示面板的像素与用于绿色的液晶显示面板的像素的像素的匹配像素）。