Patent ID: 6469294
Filing Date: 2002-10-22
Classification: G06K

Abstract:
An optical scanner, comprising:a body; at least one reading window provided in the body; a light source; light splitting means for splitting a light beam emitted from the light source into a first optical path light beam component and a second optical path light beam component; light scan means for allowing the first light beam component and the second light beam component split by the light splitting means to be emitted from the at least one reading window; a first focusing element to focus light corresponding to the first light beam component emitted by the light scan means, to a first light detector; a second focusing element to focus light corresponding to the second light beam component emitted by the light scan means, to a second light detector; beam shaper placed between the light source and the light splitting means; and beam focal position shaper placed in one of the first and second optical paths to adjust a focal position of the corresponding first or second light beam components.