| 摘要 |
<p>A high resolution optical scanner (10; 40; 50; 61) for scanning a light beam onto a receiving medium (22; 46; 64; M). The scanner includes a light source (13) for generating a light beam, optical means (16; 44; 56, 58; 67) for anamorphically shaping the beam, and a rotatable polygon (18; 42; 60; 63) for moving the light beam through a predetermined scan angle. In order to obtain high resolution throughout a scan line, a mirror (16; 44; 56, 58; 65), having power in the tangential plane and in the sagittal plane, is positioned to intercept the beam from the polygon (18; 42; 60; 63) and direct it to the receiving medium (22; 46; 64; M).</p> |
