| 摘要 |
The invention provides a method and a transparent housing cover for a met er index for communicating optical signals through an optical port formed on a front face of the transparent housing cover, for further communicating op tical signals in a straight line past one side of the meter index,- and for re-directing the optical signals at an angle of approximately ninety degrees to or from an optical transceiver. The cover includes an integrally formed light pipe, the light pipe further forming the optical port near the front o f the body and the light pipe extending along one side of the body and behin d the meter index; and the light pipe includes a surface at a back end for r eflecting light at approximately ninety degrees to and from a light transcei ver positioned behind the meter index. |
