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    Method and apparatus for controllably reducing power delivered by a laser projection display
    2.
    发明申请
    Method and apparatus for controllably reducing power delivered by a laser projection display 有权
    用于可控地减少由激光投射显示器传递的功率的方法和装置

    公开(公告)号：US20050175048A1

    公开(公告)日：2005-08-11

    申请号：US10836813

    申请日：2004-04-30

    申请人： Miklos Stern ,  Paul Dvorkis ,  Narayan Nambudiri ,  Carl Wittenberg ,  Chinh Tan ,  Ron Goldman ,  Dmitriy Yavid ,  Frederick Wood

    发明人： Miklos Stern ,  Paul Dvorkis ,  Narayan Nambudiri ,  Carl Wittenberg ,  Chinh Tan ,  Ron Goldman ,  Dmitriy Yavid ,  Frederick Wood

    IPC分类号： G03B21/14 ,  H04N9/31 ,  H01S3/13

    CPC分类号： H04N9/3129

    摘要： A method and apparatus are provided to controllably reduce power of a laser projection display (LPD) in response to detecting a variation in a viewing surface. During the operation of the LPD, a controller 142 monitors laser light being reflected from the viewing surface. Since the controller 142 “knows” the amount of power that the LPD is being instructed to deliver, it may compare the known power to the reflected laser light to determine if a foreign object may be in the path of the laser light, and therefore, affecting the magnitude of the laser light. The controller 142 responds to detecting such an event by reducing power to the lasers.

    摘要翻译： 提供了一种方法和装置，用于响应于检测到观察表面的变化而可控地降低激光投影显示器（LPD）的功率。 在LPD的操作期间，控制器142监视从观察表面反射的激光。 由于控制器142“知道”LPD正在被指示传送的功率量，所以它可以将已知功率与反射的激光进行比较，以确定异物是否在激光的路径中，因此， 影响激光的大小。 控制器142通过减少对激光器的功率来响应来检测这种事件。

    Large size image projection
    8.
    发明申请
    Large size image projection 有权
    大尺寸图像投影

    公开(公告)号：US20060087628A1

    公开(公告)日：2006-04-27

    申请号：US10975889

    申请日：2004-10-27

    申请人： Paul Dvorkis ,  Ron Goldman ,  Chinh Tan ,  Dmitriy Yavid ,  Frederick Wood

    发明人： Paul Dvorkis ,  Ron Goldman ,  Chinh Tan ,  Dmitriy Yavid ,  Frederick Wood

    IPC分类号： G03B21/00

    CPC分类号： H04N9/3129 ,  G03B21/208 ,  G03B35/18 ,  G03B37/04

    摘要： A plurality of image projection modules is operative for causing selected pixels in overlapping raster patterns to be illuminated to produce a large size image of high resolution of VGA quality in monochrome or color. The selected pixels in an overlap region of the patterns are illuminated at a lesser intensity to provide uniform brightness over the image. Multiple single mode lasers, or a multimode laser with an aperture stop, are employed to increase laser output power. Speckle noise is reduced by controlling the optical transmission characteristic of a projection screen. Three-dimensional images are generated by moving the screen. Cross-coupling between drive and feedback mechanisms in image projection is reduced for better image quality.

    摘要翻译： 多个图像投影模块可操作用于使重叠的光栅图案中的所选像素被照亮以产生单色或彩色的VGA质量的高分辨率的大尺寸图像。 图案的重叠区域中的所选择的像素以较小的强度照亮以在图像上提供均匀的亮度。 采用多单模激光器或具有孔径光阑的多模激光器来增加激光输出功率。 通过控制投影屏的光传输特性来减少斑点噪声。 通过移动屏幕生成三维图像。 降低图像投影中的驱动和反馈机制之间的交叉耦合，以获得更好的图像质量。