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    • 6. 发明申请
    • Automatic convergence for image projection systems
    • 图像投影系统的自动会聚
    • US20050219426A1
    • 2005-10-06
    • US10837465
    • 2004-04-29
    • Brian MaxsonJames Hicks
    • Brian MaxsonJames Hicks
    • H04N3/26H04N9/28H04N17/00
    • H04N9/28
    • Systems and methods are provided that facilitate automatic convergence and geometry alignment in projection systems. Preferably, an optical element such as a lens array is coupled to all areas of the projection system's screen and to a detector element such as a photocell array. In operation, each lens of the lens array is adapted to map an individual portion or region of the screen onto the photocell array. A microprocessor, controller or the like uses the data output from the photocells to instruct an alignment controller to center or steer the beams to compensate for convergence error at a particular location. In a center alignment mode, four (4) or more beacon dots located about the periphery of the screen are detected to determine screen size and position, which is used to center the video image and the centers of the mapped regions on the screen.
    • 提供了有助于投影系统中的自动会聚和几何对准的系统和方法。 优选地,诸如透镜阵列的光学元件耦合到投影系统的屏幕的所有区域以及诸如光电池阵列的检测器元件。 在操作中,透镜阵列的每个透镜适于将屏幕的单独部分或区域映射到光电晶体阵列上。 微处理器,控制器等使用从光电管输出的数据来指示对准控制器使波束中心或转向以补偿特定位置处的收敛误差。 在中心对准模式中,检测位于屏幕周边周围的四(4)个或更多个信标点,以确定用于将视频图像和映射区域的中心对准在屏幕上的屏幕尺寸和位置。