Patent ID: 6806483
Filing Date: 2004-10-19
Classification: G06K,H04N

Abstract:
A photosensor system comprising:a photosensor array which is constituted by two-dimensionally arraying a plurality of photosensors and which has a light receiving surface; a first light source which is arranged to face the light receiving surface at an interval, and which illuminates a rear surface of an object whose front surface is set on the light receiving surface; an image reading assembly which reads corrugations on the front surface of the object as an object image by receiving light that is emitted by said first light source, which passes through the object, and is scattered according to the corrugations on the front surface of the object; and a second light source which is arranged on a side of said photosensor array opposite to the light receiving surface, and illuminates via said photosensor array the front surface of the object set on the light receiving surface, wherein said image reading assembly receives light that is emitted by said second light source and reflected by the front surface of the object set on the light receiving surface, and reads the object image together with light that is emitted by said first light source and passes through the object.