Midopt Training

This application illustrates how a MidOpt® BP470 Bandpass Filter can be used with a UV light in a monochrome camera inspection application to view a printed security code. The Bandpass Filter passes the emission of the printed code allowing it to standout from the background. The use of UV fluoresce ink makes the code invisible to the eye and acts as a security and counterfeit feature.

In this plasma bag application, background noise in the form of liquid bubbles was interfering with the inspection of OCR (Optical Character Recognition) printed on the plastic bag’s surface.
A MidOpt Blue Bandpass Filter (BP470) was used in conjunction with a UV light source to reduce the appearance of the bubbles in the final image.