| 摘要 |
<p>A method of and system for generating multiple parallel scan lines, for a thin, narrow height scanner (50) by generating a reading beam (56), using a suitable scanning mechanism to scan or dither the reading beam (56), directing the scanned beam (58) on to an optical element (60), controlling the system (50) such that the beam is alternatively transmitted or reflected by the optical element (60), and directing multiple scan lines into the scan volume. When the optical element (60) is reflective, a scan line is produced directly off the optical element (60); when the optical element (60) is transmissive, a scan line passes through the optical element (60) and is reflected by a fold mirror (64) and into the scan volume.</p> |
