Beam-forming aperture for barcode applications

Details Beam-forming aperture for barcode applications Beam-forming aperture for barcode applications

2008-06-24

2008-06-24

St. Cyr, Daniel (Department: 2876)

Registers

Coded record sensors

Particular sensor structure

C235S462350

Reexamination Certificate

active

07389931

ABSTRACT:
In one embodiment, a system is provided that includes: a laser source is provided that producing a laser beam that diverges in a first direction and in a second direction orthogonal to the first direction; a lens positioned to receive the laser beam from the laser source and provide a magnified laser beam; and an opaque screen having an elongated aperture having a longitudinal axis aligned substantially parallel to the first direction, the aperture being positioned to intercept the magnified laser beam such that a projected laser beam from the aperture is focused into an elongated illumination spot, the elongated illumination spot having a longitudinal axis aligned substantially parallel to the second direction.

REFERENCES:
patent: 5200597 (1993-04-01), Eastman et al.
patent: 5742038 (1998-04-01), Dvorkis et al.
patent: 5886332 (1999-03-01), Plesko
patent: 6535299 (2003-03-01), Scherz

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