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1. 发明申请

WO2007024213A1 LIGHTPIPE FOR ILLUMINATING KEYS OF A KEYBOARD 审中-公开
标题翻译：用于照亮键盘的灯
公开(公告)号：WO2007024213A1
公开(公告)日：2007-03-01
申请号：PCT/US2005/029724
申请日：2005-08-20
申请人： SHIPMAN, Michael , DUCKWORTH, David, G.
发明人： SHIPMAN, Michael , DUCKWORTH, David, G.
IPC分类号： G01D11/28
CPC分类号： G02B6/0036 , G02B6/0021 , H01H13/83 , H01H2219/06 , H01H2219/062
摘要： A light guide is provided for illuminating innumerable constructions, but which is ideally suited for illuminating the keys of a keyboard. The light guide includes a translucent (77) planar plate having a top, a bottom and sides (73). Further, the light guide includes one or more cavities (79) which project upwardly into the translucent (77) plate from its bottom (75) surface. The cavities (79) are hollow or filled with a translucent material so that the translucent (77) plate and the one or more cavities (79) form translucent interfaces where the cavities interface with the plate. The light guide also includes a reflector which covers the plate bottom (75) and cavity openings. Light produced by a light source (91), preferably in the form of one or more LEDs (85), is transmitted to and thorough the translucent plate until striking the plate-cavity interfaces where the light is refracted (91) into the cavities’ interior or reflected upwardly to the plate’s upper surface. After initial refraction (83) into a cavity, the light reflects (83) off the reflector and travels again into the translucent (77) plate until transmitted from the plate’s upper surface. Preferably, light guide is positioned within a keyboard housing with the cavities underlying the keys so that light is transmitted from the translucent sheet to the keys.
摘要翻译：提供了一种用于照射无数结构但是理想地适合于照亮键盘的键的光导。光导包括具有顶部，底部和侧面（73）的半透明（77）平面板。此外，光导包括从其底部（75）表面向上突出到半透明（77）板中的一个或多个空腔（79）。空腔（79）是中空的或填充有半透明材料，使得半透明（77）板和一个或多个空腔（79）形成半透明界面，其中空腔与板接合。光导还包括覆盖板底（75）和腔开口的反射器。由光源（91）产生的光优选以一个或多个LED（85）的形式传输并透过半透明板，直到撞击光折射的板 - 腔界面（91）进入空腔内部或向上反射到板的上表面。在初始折射（83）进入空腔之后，光从反射器反射（83）并再次进入半透明（77）板，直到从板的上表面传播。优选地，光导被定位在键盘壳体内，其中空腔位于键之下，使得光从透光片传递到键。

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