Patent ID: 6588669
Filing Date: 2003-07-08
Classification: G06K

Abstract:
An optoelectronic device for detecting markings affixed to objects comprising:an arch-type housing with inner side legs and an inner, upper edge forming an opening; a three-dimensional detection range through which an object affixed with a marking is introduced in order to detect the marking, said arch-type housing enclosing the detection range; a transmitter that emits light rays; a single deflection unit which reflects the transmitted light rays, the transmitted light rays being periodically guided within a specified angular range; at least two reflecting units including first and second stationary reflecting units installed to receive transmitted light rays from said deflection unit, wherein a first portion of the transmitted light rays is guided over the first reflecting unit inside a first segment &Dgr;&agr;1 of the specified angular range &Dgr;&agr; thereby periodically scanning a first segment of the three-dimensional detection range, and a second portion of the transmitted light rays is guided over the second reflecting unit within a second segment &Dgr;&agr;2 of the specified angular range &Dgr;&agr; thereby periodically scanning a second segment of the three-dimensional detection range; a receiver that receives scanned light rays; an evaluating device that determines with certainty markings affixed on objects, wherein oppositely-arranged surfaces of an object affixed with a marking and moved through the detection range are scanned with the transmitted light rays guided over the first reflecting unit and the transmitted light rays guided over the second reflecting unit, respectively; and a conveying device wherein the objects are introduced into the detection range by means of the conveying device with a longitudinal axis, wherein the transmitter, deflection unit, reflecting units, receiver and evaluation unit are integrated into the arch-type housing and wherein the first stationary reflecting unit is located within one inner side leg and the second stationary reflecting unit is located within the other inner side leg of the arch-type housing.