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US 6,307,662 B1Granted
Blazed diffraction scanner
AssigneeNCR Corporation
InventorsDonald A. Collins, Jr., Paul O. Detwiler, Barry M. Mergenthaler, Hong Tang
Life of this patent
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Abstract
A scanner includes a laser for projecting a laser beam at a facet having a blazed diffractive grating thereon. The facet is rotated relative to the laser to traverse the laser beam across the grating to diffract the laser beam into a scan line. The blazed diffractive grating may be readily manufactured using injection molding or photolithograhic manufacturing techniques.
Claims15
A scanner comprising:
- a laser for projecting a laser beam;
- a facet having a blazed diffractive linear plane grating;
- and
- means for rotating said facet relative to said laser to traverse said laser beam across said grating to diffract said laser beam into a scan line.
1 more element
Dependencies are inferred from the claim text.