IMAGE SENSOR SUBSTRATE AND IMAGE SENSOR EMPLOYING IT

摘要

An image sensor comprising a case (4), a light source encased in the case (4) to emit light toward an object (K) to be read out, and an image sensor substrate (6) on the surface of which is mounted a light receiving element (52) which receives a reflected light from the object (K) to output an image signal. The image sensorsubstrate (6) is fixed with the surface thereof facing toward the inside of the case (4). At least the part on the rear surface of the image sensor substrate (6) corresponding to the region on the surface thereof for mounting a plurality of light receiving elements (52) is covered entirely with a light shielding layer (61) so that an external light does not intrude into the case (4).