Ask the Experts

The simple answer is that it depends, I say there is no one perfect solution! It depends on the thickness of the enclosure, the transparency of the glass, and what inspection you are actually going for. I very recently helped with an application using IR light which would "burn" through the plastic enclosure but would not make it through the substance it contained ... worked great when we were doing presence/absence and basic measurement.

Here at Gibson we represent a number of different lighting manufacturers and have a complete vision lab to test parts/applications/projects out (usually we perform vision evaluations with our Cognex cameras), shoot me an email if you'd like to know more!