Traceability is gaining more importance today with the rising pressure on manufacturers to maintain food safety. Barcodes are an easy solution, says Didier Lacroix, senior VP, international sales & services, Cognex incorporated.
The global food traceability market is expected to grow at a CAGR of 12.2 percent, according to Stratistics MRC.
The new polariser and diffuser optical filter accessories for Microscan’s MicroHawk barcode readers are suitable in applications where barcodes placed on highly reflective surfaces impede decoding.
They replace the standard front window, blocking out unwanted light and passing only the light needed for inspection while enhancing contrast and resolution.
The diffuser accessory softens and flattens the background light to minimise noise and reflections. It is useful when the reader needs to be mounted in 90 deg, where direct specular reflection is most likely.
Conversely, the polariser accessory eliminates ‘hot spots’ by allowing one linear light polarisation to be used for the outgoing scanning beam, while the other perpendicular light polarisation will return to the scanner, pass through the polariser and be detected.