A polfilter is used to manage reflections and suppress glare that may occur when working through mediums (ie. glass windows) or with shiny-coated objects.
Emitted light, as typically observed by the viewer, is unpolarized, meaning it’s intensity is distributed in all directions and is the same in each direction. When light is refracted or reflected, it can amount to spectral glare that prevents contrast from being perceived or captured on an image. The refracted light, inadvertently, is polarized to the specific (application) viewing angle. This usually cannot be avoided, however, it can be minimized by using polfilters.
A polfilter filters transient light in only one direction/angle. The advantage of this is that polarized light from a surface can be filtered out, thus allowing a measurement to be performed. Using a polfilter, both for the illumination and lens, known as “cross-polarization”, is most effective for the minimization of glare and refraction, since the control of the refraction of the specific (application) viewing angle can be best controlled.
The XR/XG-LED Polflter and the SXR/SXG-Polfilter are high-temperature, linear polarizing glass filters that can be attached to the mounting bracket of the SXR-and SXG-Illumination Systems.
They can be used to manage reflections and suppress glare that may occur when working through mediums (ie. glass windows) or with shiny-coated objects