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    • 4. 发明申请
    • HOLOGRAPHIC BASED OPTICAL TOUCHSCREEN
    • 基于全息图的光学触摸
    • US20110248958A1
    • 2011-10-13
    • US12756550
    • 2010-04-08
    • Russell GruhlkeIon Bita
    • Russell GruhlkeIon Bita
    • G06F3/042H01J9/00
    • G06F3/0428G02B6/0031G06F3/0416G06F3/0421G06F2203/04101
    • Disclosed are various embodiments of a holographic based optical touchscreen and methods of configuring such devices. In certain embodiments, a touchscreen assembly can include a holographic layer configured to receive incident light and turn it into a selected direction to be transmitted through a light guide. The holographic layer can be configured to accept incident light within an acceptance range and so that the selected direction is within some range of directions so as to allow determination of incidence location based on detection of the turned light. A light source can be provided so that light from the source scatters from an object such as a fingertip near the holographic layer and becomes the incident light. Thus the determined incidence location can represent presence of the fingertip at or near the incidence location, thereby providing touchscreen functionality. Non-limiting examples of design considerations and variations are disclosed.
    • 公开了基于全息光学触摸屏的各种实施例以及配置这种装置的方法。 在某些实施例中,触摸屏组件可以包括被配置为接收入射光并将其转换成通过光导传输的选定方向的全息层。 全息层可以被配置为在接受范围内接受入射光,并且使得所选择的方向在一些方向范围内,以便允许基于转动的光的检测确定入射位置。 可以提供光源,使得来自源的光从诸如全息层附近的指尖的物体散射并变为入射光。 因此,确定的入射位置可以表示在入射位置处或附近的指尖的存在,从而提供触摸屏功能。 公开了设计考虑和变化的非限制性示例。