Registers – Coded record sensors – Particular sensor structure
Reexamination Certificate
2006-06-20
2006-06-20
Lee, Michael G. (Department: 2876)
Registers
Coded record sensors
Particular sensor structure
Reexamination Certificate
active
07063261
ABSTRACT:
The combination of a rooftop optical element and a soft edge aperture stop, as well as the introduction of a negative spherical aberration in a positive focusing lens, improve working distance and depth of focus in both moving beam and imaging readers for electro-optically reading indicia such as bar code symbols, especially for close-in symbols, and moreover tend to reduce undesirable light intensity modulation in the beam profile thereby improving reader performance.
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Barkan Edward
Gurevich Vladimir
Madej Dariusz J.
Patel Mehul M.
Shi David Tsi
Kim Tae W.
Kirschstein et al.
Lee Michael G.
Symbol Technologies Inc.
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