The invention regards a method for improving the depth of field in the detection of a linear optical code, comprising simultaneously forming two or more overlapped equally focused but differently diaphragmed in phase images of an optical code onto a linear sensor. Diaphragms and optical receiving devices suitable to implement the method are described.

Method, diaphragms and optical receiving devices for improving the depth of field in a linear optical reader

VINCENZI, Donato
2007

Abstract

The invention regards a method for improving the depth of field in the detection of a linear optical code, comprising simultaneously forming two or more overlapped equally focused but differently diaphragmed in phase images of an optical code onto a linear sensor. Diaphragms and optical receiving devices suitable to implement the method are described.
2007
Imaging barcode readers; depth of field extension; wavefront apodization
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1613666
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