ILLUMINATION SYSTEM FOR USE IN IMAGING MOVING ARTICLES
摘要
An apparatus and method for illuminating articles, such as parcels, moving beneath a camera (18) on a conveyor belt (12). Multiple light sources (200-201) are positioned alongside the conveyor to direct light angled downwardly and from the side of the conveyor. Each light source has an elongated lamp (40) angled with respect to the surface of the article and a light directing device, preferably a Fresnel lens, (45) positioned to receive light from the lamp and to direct the light toward the surface at an angle equal to or greater than forty degrees from an optical axis of the camera.
申请公布号
WO0173677(A3)
申请公布日期
2002.02.21
申请号
WO2001US09219
申请日期
2001.03.22
申请人
UNITED PARCEL SERVICE OF AMERICA, INC.
发明人
ESSLINGER, ROBERT, H.;BRAGINSKY, MARK, B.;HESS, WILLIAM, D.;GLUEGE, PETER, R.