Optical Scanning Module

An optical scanning module of a barcode scanner for scanning a barcode, comprising:

• an optical sensor;
• a lens drum, having an axle disposed longitudinally at the center of the lens drum, and a plurality of light reflecting surfaces disposed continuously around external sides of the lens drum;
• a mirror, having a reflecting plane, and disposed on a lateral side of the lens drum, such that the reflecting plane faces any one of the light reflecting surfaces, and the mirror having a penetrating hole disposed thereon for passing the reflecting plane;
• and
• a light generator, for emitting a light beam through the penetrating hole of the mirror, projecting the light beam onto any one of the light reflecting surfaces of the lens drum, refracting the light beam to the barcode, returning the scanned light beam onto any one of the light reflecting surfaces of the lens drum, and refracting to the reflecting plane of the mirror, and the reflecting plane reflecting the returned light beam to the optical sensor for receiving the returned beam.