摘要 |
<p>The security window is a laminated pair of polymeric panels having electrically conductive rods sandwiched therebetween. Glass fibers, having electrically conductive coatings, extend from edge to edge of the plastic window panels and are distributed in the rods which substantially cover the entire window area. The index of refraction of the coated glass fibers is as identical as possible to that of the surrounding plastics,making the electrically conductive rods substantially invisible. The conductive rods are connected in series. The resistance characteristics of the circuit are monitored to detect damage to the window.</p> |