公开(公告)号：US5299111A

公开(公告)日：1994-03-29

申请号：US758853

申请日：1991-09-12

申请人： A. Philip Parduhn ,  Michael N. Fiske ,  John D. Schmidt

发明人： A. Philip Parduhn ,  Michael N. Fiske ,  John D. Schmidt

IPC分类号： F21S8/00 ,  F21V11/02 ,  F21V11/12

CPC分类号： F21V11/12 ,  F21V11/02 ,  F21W2111/02

摘要： A device for directing a beam of light from a light source to a predetermined view range. The device is particularly suitable for installation inside the visor of a traffic signal, although other applications will be apparent. Two or more baffles are selectively positioned within a hollow housing. The baffles are uniformly formed and each has a plurality of apertures. The baffles are thin plates and are aligned so that each set of corresponding apertures creates a tunnel for a portion of a beam of light from the light source. Due to the thinness of the baffles, the "tunnels" have no walls and no substantial surface area to deflect light rays outside the selected view range. This provides a sharp on-off effect at the periphery of the view range. Yet, a "full ball" effect is provided within the view range. The exterior of the housing is contoured to fit inside the visor so that the position of the device, and therefore the direction of the light beam, may be adjusted by multi-directional rotation within the visor.

摘要翻译： 一种用于将来自光源的光束引导到预定视野范围的装置。 该装置特别适用于安装在交通信号灯的遮阳板内，尽管其他应用将显而易见。 选择性地将两个或更多挡板定位在中空壳体内。 挡板均匀地形成，并且每个都具有多个孔。 挡板是薄板，并且对齐，使得每组对应的孔产生用于来自光源的光束的一部分的隧道。 由于挡板的薄度，“隧道”没有壁，也没有实质的表面积，以将光线偏转到所选视野范围之外。 这在视野范围的周边提供了尖锐的开关效应。 然而，在观看范围内提供了“全球”效果。 壳体的外部具有轮廓以适合遮阳板内部，使得装置的位置以及因此的光束的方向可以通过遮阳板内的多方向旋转来调节。