Optical scanner with fast zoom capability and scanning system

摘要

A bar code scanner comprises a first collection optical system having an optical axis and a first magnification, a detector disposed along the optical axis and in optical communication with the first collection optical system, a second collection optical system having a second magnification greater than the first magnification and having an optical axis and displacing means operable for selectively moving the second collection optical system to dispose the optical axis thereof in coincidence with the optical axis of the first collection optical system.