Inventors:
John J. Uebbing - Palo Alto CA
Perry Jeung - Sunnyvale CA
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
G06K 710
G06K 714
G08C 906
Abstract:
An optical bar code reader is provided employing a dual focusing system in which a source of light is focused by a first lens to a small area of the bar code, which reflects the light back through a second lens to a detector. In preferred embodiments of the invention the source and detector are solid state semiconductors mounted on the same substrate, while the focusing lenses are integrally molded as part of a single lens support. Spherical aberration is minimized by utilizing aspheric lenses.