| 摘要 |
<p>A sapphire-glass window for a laser scanner is mounted in a rigid plastic window frame, the frame overlies the edges of a thin sapphire sheet which is laminated to a thicker glass window. A flexible seal is provided around the edge of the window frame and the thus assembled frame can be snapped into place in a merchandise supporting structure. The arrangement gives a strong, scratch resistant and liquid tight laser window.</p> |
