公开(公告)号：US20100163731A1

公开(公告)日：2010-07-01

申请号：US12523611

申请日：2007-01-19

申请人： Terence Haran ,  Jonathan c. James ,  David Roberts

发明人： Terence Haran ,  Jonathan c. James ,  David Roberts

IPC分类号： H01L31/09 ,  H01L31/12

CPC分类号： G08B13/06 ,  G08B13/08 ,  G08B13/126 ,  G08B13/1436 ,  G08B13/1618 ,  G08B13/1654 ,  G08B21/22 ,  G08B29/188

摘要： Enclosure door status may be detected. Light may be transmitted from a first component. The light may be received at a second component when a door is in a substantially closed position. The door may be mounted on a structure wherein an angle of incidence between the light transmitted from the first component and the second component increases proportionally to an angle of incidence between the door and the structure. The door may be determined to be in an open position when a light intensity received at the second component is less than a predetermined light intensity value that corresponds to a predetermined angle of incidence between the door and the structure. The first component may comprise a low divergence light emitting diode (LED) transmitter that may be configured to transmit light at a wavelength of approximately 950 nm. The second component may comprise a low profile silicon photodiode.

摘要翻译： 外壳门状态可能被检测到。 光可以从第一部件传输。 当门处于基本关闭位置时，可以在第二部件处接收光。 门可以安装在其中从第一部件和第二部件传输的光之间的入射角与门和结构之间的入射角成比例地增加的结构。 当在第二分量处接收到的光强度小于对应于门和结构之间的预定入射角的预定光强度值时，门可以被确定为处于打开位置。 第一组件可以包括低发散发光二极管（LED）发射器，其可以被配置为透射波长约为950nm的光。 第二部件可以包括低剖面硅光电二极管。