Optical scanners having dual surface optical elements for...

Details Optical scanners having dual surface optical elements for... Optical scanners having dual surface optical elements for...

G - Physics

06

K

G06K 7/10 (2006.01) G06K 9/18 (2006.01)

Patent

CA 2170934

An optical scanner such as a bar code scanner includes a segmented fold mirror, the individual sections of which have different profiles. By directing the scanning laser beam across the fold mirror, plurality of scan lines are created, at different distances from the scanner. This provides increased flexibility by extending the scanner's working range. In alternative embodiments, a collector mirror and/or a scanning mirror may be segmented. In addition, beam shaping may be provided by reflecting the beam from one or more aplanar surfaces.

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