A category name from the listed production lines
Special filters is a category name listed among the company's production lines. This page records that category name and nothing more about it. It does not describe an application for this category, it does not list a model, it does not show a product photograph for this category, and it does not invite an inquiry directed at any specific application of this category. Buyers who need a filter in a category that is not otherwise described on this site should use the general inquiry route and describe the optical job they need in full, so that it can be checked on its own terms.
Other categories on this site
The other filter categories on this site are interference filters as an overview, fluorescence filters, neutral density filters, narrow band pass filters, beam splitting filters, short pass filters, color splitting filters, high reflection filters, IR sensor filters, UV mirrors, CCD gel imaging filters, and IPL beauty machine filters. The optical filter types guide lists the same lines as a single overview.