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    • 4. 发明申请
    • Input device and method for making same
    • 输入装置及其制作方法
    • US20090141285A1
    • 2009-06-04
    • US12315177
    • 2008-11-26
    • Tapani LevolaSeppo Pienimaa
    • Tapani LevolaSeppo Pienimaa
    • G01B11/14
    • G01B11/002G02B5/1814G02B6/0016G02B6/34G02B27/4255G06F3/0425
    • A light guide has a first surface and a second surface with diffractive structures. A slanted facet is provided at one corner of the light guide. The diffractive structures have concentric fringes centered near the slanted facet. Fringes are arranged such that a light beam directed from the first surface at a location P toward the second surface is diffracted by the fringes only if the beam encounters the diffractive structures at a certain direction. The diffracted beam is guided and exits through the slanted surface at an exiting angle, which is correlated to the location P. If the light guide is illuminated in such a way that when an object is present at the first surface, it changes the light intensity of the exiting light beam. By detecting the exiting angle and the change of light intensity, the location of the object can be determined.
    • 导光体具有第一表面和具有衍射结构的第二表面。 在光导的一个角上设置倾斜面。 衍射结构具有以斜面为中心的同心条纹。 排列的布置使得仅当波束在特定方向上遇到衍射结构时,从位置P朝向第二表面的第一表面引导的光束被条纹衍射。 衍射光束被引导并以与位置P相关的出射角度离开倾斜表面。如果光导被照亮,使得当物体存在于第一表面时,其改变光强度 的出射光束。 通过检测出射角度和光强度的变化,可以确定物体的位置。
    • 5. 发明授权
    • Light guide and optical sensing module input device and method for making same
    • 光导和光学传感模块输入装置及其制作方法
    • US08120762B2
    • 2012-02-21
    • US12315177
    • 2008-11-26
    • Tapani LevolaSeppo Pienimaa
    • Tapani LevolaSeppo Pienimaa
    • G01N21/00
    • G01B11/002G02B5/1814G02B6/0016G02B6/34G02B27/4255G06F3/0425
    • A light guide has a first surface and a second surface with diffractive structures. A slanted facet is provided at one corner of the light guide. The diffractive structures have concentric fringes centered near the slanted facet. Fringes are arranged such that a light beam directed from the first surface at a location P toward the second surface is diffracted by the fringes only if the beam encounters the diffractive structures at a certain direction. The diffracted beam is guided and exits through the slanted surface at an exiting angle, which is correlated to the location P. If the light guide is illuminated in such a way that when an object is present at the first surface, it changes the light intensity of the exiting light beam. By detecting the exiting angle and the change of light intensity, the location of the object can be determined.
    • 导光体具有第一表面和具有衍射结构的第二表面。 在光导的一个角上设置倾斜面。 衍射结构具有以斜面为中心的同心条纹。 排列的布置使得仅当波束在特定方向上遇到衍射结构时,从位置P朝向第二表面的第一表面引导的光束被条纹衍射。 衍射光束被引导并以与位置P相关的出射角度离开倾斜表面。如果光导被照亮,使得当物体存在于第一表面时,其改变光强度 的出射光束。 通过检测出射角度和光强度的变化,可以确定物体的位置。
    • 6. 发明授权
    • Multimode apparatus and method for making same
    • 多模设备及其制作方法
    • US08629855B2
    • 2014-01-14
    • US12744952
    • 2007-12-20
    • Seppo PienimaaKong Qiao Wang
    • Seppo PienimaaKong Qiao Wang
    • 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上的位置P指向下表面的光束时,其被光栅衍射并被引导到倾斜小面。 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。
    • 9. 发明申请
    • Multimode Apparatus and Method for Making Same
    • 多模设备及其制作方法
    • US20110032213A1
    • 2011-02-10
    • US12744952
    • 2007-12-20
    • Seppo PienimaaKong Qiao Wang
    • Seppo PienimaaKong Qiao Wang
    • 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上的位置P指向下表面的光束时,其被光栅衍射并被引导到倾斜小面。 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。