Method of generating a complex laser scanning pattern from a bioptical laser scanning system for providing 360° of omnidirectional bar code symbol scanning coverage at a point of sale station

摘要

A method of generating a complex laser scanning pattern from a bioptical laser scanning system for providing 360° of omnidirectional bar code symbol scanning coverage at a point of sale station that employs a plurality of laser scanning stations about a two independently controlled rotating polygonal mirrors. The system has an ultra-compact construction, ideally suited for space-constrained retail scanning environments, and generates a 3-D omnidirectional laser scanning pattern between the bottom and side-scanning windows during system operation. The laser scanning pattern of the present invention comprises a complex of laser scanning planes, including a plurality of substantially-vertical laser scanning planes for reading bar code symbols having bar code elements (i.e. ladder type bar code symbols) that are oriented substantially horizontal with respect to the bottom-scanning window, and a plurality of substantially-horizontal laser scanning planes for reading bar code symbols having bar code elements (i.e. picket-fence type bar code symbols) that are oriented substantially vertical with respect to the bottom-scanning window.