Patent ID: 8228567

Claim:
A multi-functional device comprising: a document bed; and a scanner module operable to scan a document placed on the document bed while moving in a main scan direction, the scanner module including an illuminator to illuminate light onto the document, the illuminator including a first light guiding member extending in a main-scanning direction to direct light received from a first light source onto a surface of the document, and a second light guiding member extending in the main-scanning direction to direct light received from a second light source onto a surface of the document, the first light guiding member and the second light guiding member slantingly arranged in a holder such that a center line of light illuminating the document by the first light guiding member and a center line of light illuminating the document by the second light guiding member are spaced apart from each other, wherein each of the first and second light guiding members has an incident surface through which the light emitted from one of the light sources is incident, a reflecting surface adapted to reflect the light received through the incident surface, guiding surfaces to guide the incident light, and an exit surface opposite to the reflecting surface to allow light reflected by the reflecting surface and the guiding surface to exit, a surface area of the exit surface is greater than a surface area of the reflecting surface, and the reflecting surface of each of the first and second light guiding members is provided with a plurality of reflective elements which are not uniformly distributed in the main-scanning direction thereof such that a spacing distance between adjacent reflective elements progressively increases from a center of the light guiding member towards a first end of the light guiding member having the incident surface, the reflective elements to diffuse and reflect light received from one of the light sources, and the exit surface of each of the first and second light guiding members is provided as a convex lens having an arc-shaped section with a predetermined curvature.