Image capture system having a folded optical path

摘要

An image capture system including a platen for receiving a media sheet bearing an image to be captured; an illumination system for illuminating the media sheet; a mirror disposed in optical communication with the platen, for reflecting light from the illumination system reflected from the media sheet; and an optical sensor for receiving the light reflected by the mirror. The interrelationship between the platen, mirror and optical sensor is such that a location of a top edge of the mirror's primary reflection projected onto the platen is lower than a location of a bottom edge of the image's secondary reflection projected onto the platen. In this way, the image captured by the optical sensor is free of secondary reflections.

主权项

1. An image capture system, comprising:
a platen for receiving a media sheet bearing an image to be captured; an illumination system for illuminating the media sheet; a mirror disposed in optical communication with the platen, for reflecting light from the illumination system reflected from the media sheet; and an optical sensor for receiving the light reflected by the mirror; wherein a location of a top edge of the mirror's primary reflection projected onto the platen is positioned approximately lower than a location of a bottom edge of the image's secondary reflection projected onto the platen, the secondary reflection being an optical ghost image having a lower intensity than the primary reflection.