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 code reader
VINCENZI, Donato;
2005
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.File in questo prodotto:
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