OPC Code Scanner Algorithm

Barcode Scanning Optical Product Code (OPC) is a variant of Interleaved 2 of 5. It has also been known as Vision Council of America (VCA) barcode. This symbology is used to mark optical retail products, such as eyeglasses, to identify the product and its manufacturer. OPC is defined in The Optical Product Code (OPC) Guide for Lenses document that is maintained by The Vision Council. Symbol Structure The symbol comprises the following elements: Leading quiet zone Five digits that identify the manufacturer, as assigned by The Vision Council Four digits that identify the product, as assigned by the manufacturer One mandatory check digit Trailing quiet zone Character Set This symbology supports all numeric digits (0-9). Check Digit OPC uses a check digit that is based on the modulo 10 (mod 10) algorithm. Symbol Dimensions The recommended minimum symbol height is 0.25 inch or 15 perce…