| 摘要 |
<p>A light-scanning reader equipped with a rotary or oscillatory polyhedral reflector (17) including at least two correlated reflecting surfaces (18-23) each formed in an angular range of 180 DEG or less to generate a plurality of mutually non-parallel scanning loci. The polyhedral reflector is so disposed as to be rotatable or oscillatable on its axis and is capable of easily generating a plurality of directionally different scanning loci.</p> |
