Electronic-optical device for multidirectional acquisition of flat images, especially bar codes

摘要

The mechanism includes motors oscillating mirrors with determined amplitude both at frequencies chosen to oscillate mirror between extreme positions, and also at high frequency such as to ensure stabilisation of mirrors. A light source (20) provides an illuminating beam which is incident on the bar code, and two mirrors (18,19) are mounted to oscillate about two perpendicular axes with a motor drive mechanism (16,17). An electronic sensor collects the resulting image, with a retro-collection device (11) forming the image of the bar code on the sensor.