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    • 2. 发明申请
    • MULTIMODE APPARATUS AND METHOD FOR MAKING SAME
    • 多模式装置及其制造方法
    • WO2009068935A1
    • 2009-06-04
    • PCT/IB2007/004034
    • 2007-12-20
    • NOKIA CORPORATIONNOKIA INC.PIENIMAA, SeppoWANG, Kong Qiao
    • PIENIMAA, SeppoWANG, Kong Qiao
    • G06F3/042
    • G06F3/0416G06F3/0421
    • An apparatus operable in touch-input mode and scanning mode uses a light guide and a camera to look through a slanted facet at one corner of the light guide. The light guide has an upper surface for placing a touch object or an item for scanning. An angular sensitive grating is located on lower surface having fringes such that when a light beam directed from a location P on upper surface toward lower surface at a predefined direction, it is diffracted by the grating and guided toward the slanted facet. The diffracted beam exits the slanted facet at an exiting angle indicative of the location P. When an object or item is placed on upper surface, it causes changes in exit beam intensity. From exiting angles and intensity changes, a camera is able to locate touch objects or to acquire an image of the scanned item.
    • 可在触摸输入模式和扫描模式下操作的装置使用光导和照相机来观察光导的一个角落处的倾斜小面。 光导具有用于放置触摸物体或用于扫描的物品的上表面。 角敏感光栅位于具有边缘的下表面上,使得当沿着预定方向从上表面朝向下表面的位置P指向的光束被光栅衍射并被引导到倾斜小面时。 衍射光束以指示位置P的出射角度离开倾斜面。当物体或物体放置在上表面上时,其导致出射光束强度的变化。 从出现的角度和强度变化,相机能够定位触摸物体或获取被扫描物品的图像。