A conveying system includes a conveyor for advancing items thereon; and an image-capturing apparatus for detecting individual items on the conveyor and for generating image signals representing an image of the items. The image-capturing apparatus includes an illuminating unit formed of a matrix composed...http://www.google.es/patents/US6885393?utm_source=gb-gplus-sharePatente US6885393 - Illuminating unit for an article-sensing camera
