Bar code reading apparatus, moving mirror for bar code reading apparatus, and manufacturing thereof

A bar code reading apparatus comprising:

• a laser module having a light-emitting device and a light-receiving device arranged in a substantially orthogonal state;
• a moving mirror having a mirror mounted on a stand, swing shafts provided on both sides of the stand, a magnet mounted on a lower side of the stand, a supporting pole arranged below the magnet, and an air-core driving coil in which the supporting pole is inserted;
• and
• a light-emitting lens for condensing a light beam from the light-emitting device and reflecting the light beam to the mirror;
• the laser module, the moving mirror and the light-emitting lens being housed in a housing, wherein in the moving mirror, a top part of the supporting pole is arranged to have a magnetic space to the magnet and its leg part is inserted in the air core of the driving coil.

A bar code reading apparatus comprising:

• a swing member holding a mirror and supported so that it can freely swing about a swing shaft;
• a first magnet mounted on the swing member and forming a magnetic field in a direction substantially orthogonal to the swing shaft;
• a swing driving unit for causing the swing member to swing by magnetic attraction or repulsion to the magnetic field formed by the first magnet;
• and
• a second magnet causing a force of magnetic attraction to act between different magnetic poles of the second magnet and the first magnet and provided to be displaceable in a first direction for varying the magnitude of the force of magnetic attraction and in a second direction for varying the balance of the force of magnetic attraction.