Patent ID: 6484944
Filing Date: 2002-11-26
Classification: G06K

Abstract:
An optoelectronic device for acquiring images of planes, in particular of bar codes, comprising:a lighting source for emitting an incident light beam, an electronic sensor for acquiring images, optical means for forming images on the electronic sensor, processing means for reading and decoding the images acquired by the sensor and comprising a clock adapted to emit a transfer signal &PHgr;TG of each image acquired by said sensor, said device further comprising: deflecting means for the incident beam comprising oscillating or rotating cyclic deflecting means carried by drive means for causing said cyclic deflecting means to oscillate or rotate in such a way that the incident beam describes, during each cycle, angular scanning adapted to generate at least one elementary scanning line on the plane, and closed loop control means for the drive means connected, on the one hand, to the clock in order to receive the transfer signal &PHgr;TG and, on the other hand, to said drive means and adapted to synchronize the beginning of each scanning cycle in phase and frequency with the signal &PHgr;TG emitted by the clock.