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    Optical touch device with pixilated light-turning features
    10.
    发明授权
    Optical touch device with pixilated light-turning features 有权
    具有像素化光转动功能的光学触摸装置

    公开(公告)号：US09019240B2

    公开(公告)日：2015-04-28

    申请号：US13307353

    申请日：2011-11-30

    申请人： Russell Wayne Gruhlke ,  Ye Yin ,  Lai Wang ,  David William Burns

    发明人： Russell Wayne Gruhlke ,  Ye Yin ,  Lai Wang ,  David William Burns

    IPC分类号： G06F3/042 ,  G02F1/1333 ,  G02B26/00 ,  G02B26/08 ,  F21V8/00

    CPC分类号： G06F3/0421 ,  G02B6/0011 ,  G02B6/0053 ,  G02B26/001 ,  G02B26/08 ,  G02F1/13338 ,  G06F3/0428

    摘要： This disclosure provides systems, methods and apparatus for a touch screens configured to determine a position of a touch event by selectively redirecting light to correlated locations on a light sensor. In one aspect, the touch screen apparatus can include a light guide forming a touch interface, a light source for injecting light into the light guide, a light sensor for detecting the injected light, and a pixilated light-turning layer. The pixilated light-turning layer can include a plurality of light-turning features forming pixels. The pixels can receive incident light corresponding to the emitted light scattered by an object contacting the light guide. The pixels can redirect the incident scattered light towards the light sensor such that light selectively propagates to one or more correlated light receiving locations. A processor can map the light receiving location to an area contacted by the object, thereby determining a position of a touch event.

    摘要翻译： 本公开提供了用于触摸屏的系统，方法和装置，其被配置为通过选择性地将光重定向到光传感器上的相关位置来确定触摸事件的位置。 一方面，触摸屏装置可以包括形成触摸界面的光导，用于将光注入到光导中的光源，用于检测注入的光的光传感器和像素化的光转向层。 像素化的光转向层可以包括形成像素的多个光转向特征。 像素可以接收对应于由与光导相接触的物体散射的发射光的入射光。 像素可以将入射的散射光重定向到光传感器，使得光选择性地传播到一个或多个相关的光接收位置。 处理器可以将光接收位置映射到由对象接触的区域，从而确定触摸事件的位置。