Patent ID: 6631845
Filing Date: 2003-10-14
Classification: G06K

Abstract:
A scanning device for reading bar code symbols comprising:a housing having a substantially horizontal surface with a substantially horizontal window and a substantially vertical surface having a substantially vertical window; a first polygon mirror and a first stationary mirror array; a first motor for rotating said first polygon mirror; a first light source for generating a first light beam that reflects off said first polygon mirror to project a first plurality of scan lines through said substantially horizontal window; a second polygon mirror and a second stationary mirror array; a second motor independent of the first motor for rotating said second polygon mirror; a second light source for generating a second light beam that reflects off said second polygon mirror to project a second plurality of scan lines through said substantially vertical window; and a plurality of sensors for detecting the intensity of light from the first and second plurality of scan lines reflected by a bar code symbol and for generating electrical signals proportional to the intensity of said reflected light; wherein axes of rotation of said first and second motors are not substantially parallel.