Read head for reading coded data by optical scanning

A read head comprising:

• a light emitting member outputting a predetermined laser beam to a data recording portion;
• a light receiving member receiving a return beam reflected by the data recording portion and detecting data included in the return beam;
• a movable section mounting the light emitting member and the light receiving member thereon;
• a fixed section, including:
• a fixed member;
• and
• a support mechanism swingably supporting the movable section;
• and
• a driving mechanism swinging the movable section with respect to the fixed section,
• wherein the driving mechanism includes:
• a magnetic field generator disposed on one of the movable section and the fixed section;
• and
• a magnetic driver disposed on the other of the movable section and the fixed section,
• wherein the magnetic field generator includes:
• a first yoke having a first base portion and a plurality of first arm portions protruding outwardly from the first base portion;
• a second yoke having a second base portion and a plurality of second arm portions protruding outwardly from the second base portion;
• and
• a magnet disposed between the first base portion and the second base portion, the first arm portions and the corresponding second arm portions being opposed to each other;
• wherein the magnetic driver includes a plurality of coils, and
• wherein each of the second arm portions is disposed in corresponding one of the coils with a movement margin.