Patent ID: 6188500
Filing Date: 2001-02-13
Classification: G02B,G06K

Abstract:
A method of scanning an item in a scan volume, comprising the steps ofgenerating a laser light beam from a light source;scanning the light beam over a scan angle to generate a scan beam along an outgoing path;generating a first scan line and a second scan line by positioning a first pattern mirror in theoutgoing path of the scan beam,positioning an optical element in the outgoing path of the scan beam upstream of the first pattern mirror,scanning the light beam across the optical element and reflecting the scan beam off the optical element to generate the first scan line and directing the first scan line into the scan volume,passing the scan beam through the optical element and then across the first pattern mirror and reflecting the scan beam off the first pattern mirror to generate the second scan line and directing the second scan line into the scan volume.