What does the depth of field of barcode scanner mean? Simply speaking, the scanning distance of the barcode scanner is said to be able to leave the longest distance and the nearest distance on the surface of the barcode on the surface of the barcode when it can ensure reading. It is the effective working scope of a barcode scanner.

The depth of the barcode scanner is also related to the density of the barcode of the scanning. For example, the barcode scanner can scan the barcode with a density of 10mil, which can be scanned with barcodes. The farthest can be scanned by 20cm. So the depth of the barcode scanner on the 10mil bar code is 0-20cm.

If the same barcode scanner is scanned with a 5mil density barcode, it cannot be scanned against the barcode scanner, but a distance from the label, such as scanning from 10cm, then the depth of the barcode scanner scan 5mil is 0-10cm. There are also some barcodes from 5cm from the scanner and 8cm, so the depth of this barcode is 5-8cm.

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