Image scanning device with switching mechanism for selectively scanning reflective and transparent document

摘要

An image scanning device with a switching mechanism arranged in an optical scanning module thereof for selectively scanning a reflective or transparent original document is disclosed. The optical scanning module includes a reflective optical path composed of a plurality of first group reflection mirrors and a first focusing lens and a transparent optical path composed a plurality of second group reflection mirrors and a second focusing lens. The second focusing lens of the transparent optical path is arranged at an angle with respect to the first focusing lens of the reflective optical path. An image sensing module is arranged adjacent to the light projecting outlets of the first and second focusing lens for selectively picking up the focused light beam from the first or second focusing lens. A switching mechanism is coupled to the image sensing module for rotating said image sensing module to align with the light projecting outlet of the first focusing lens or the light projecting outlet of the second focusing lens.