Polarized light visiontest

Depending on the position of the test objects in the inspection area, these reflections would "move" strongly on the surface. A taught object can then look very different to the inspection software: this leads to misinspections. These difficulties are avoided by using the mentioned illumination and filter technologies.

The Super Field® Lens is the next generation of our Classic Series 90D Lens. Also called the “Super 90D,” this lens provides wide field imaging to the mid periphery and dynamic viewing to the periphery for a fast, comprehensive image of the retina. With its increased field of view and 30 mm lens ring for comfortable grip and easy manipulation, this lens is the go-to choice for general examination.

Polarized light visionmeaning

Metallic sheen on metal surfaces can be suppressed by using a polarised source of light and a polarisation filter. The metal parts appear very dark in the camera image. Especially non-plane objects like cylindrical, curved metal surfaces or crinkled foils (aluminium blister, etc.), can usually hardly or very difficultly be illuminated in a homogenous way.

Polarized light visioncauses

If you put an additional glass polarisation filter in front of the optics, the polarised light is selectively blocked or passed. The principle of polarisation and filter effect is described in detail in the chapter "polarisation filters". There you can also find further examples.

By means of a polarisation film in front of any industrial illumination, light can be polarised. There are flexible foils with a thickness of 0.25 mm to 1 mm available to the user. Thicker filters of 2 mm and more are typically delivered as hard plastic plates.