A laser scanner is disclosed, in which M, the lateral magnification obtained from the first and the second optical members, V.sub.1, the scanning velocity of the scanning beam on the beam receiving surface and V.sub.s, the velocity of the acoustic wave inside the acoustic beam modulator are substantially...http://www.google.com.au/patents/US5457567?utm_source=gb-gplus-sharePatent US5457567 - Laser scanner having improved frequency characteristics
