Patent ID: 9088683
Filing Date: 2015-07-21
Classification: G06K,H04N

Abstract:
1. A fixed-position scanning system for scanning objects in an object scanning area on a moving conveyor, the scanning system comprising: a linear array sensor adapted to detect light input signals and that is disposed above the moving conveyor that carries objects; a first lens optically connected to the linear array sensor and adapted to receive and transmit an optical image located in a field of view of the first lens to the linear array sensor; a light source comprising light emitting diodes; a second lens positioned between the light source and the moving conveyor, wherein the second lens is adapted to provide an illumination plane from light produced by the light source; a range finder; and a focusing device and an actuator in operative communication with the focusing device to adjust a focus of an image of a said object from the first lens onto the linear array sensor in response to signals from the range finder, wherein the illumination plane is coplanar with the field of view over at least a portion of a depth of field of the object scanning area.