The first standard type has a full width half maximum of 8nm, and was developed according to industry standard, exhibiting a suppression ratio of 1:100,000. This OD5 blocking depth is superior to conventional interference filters.
Also offered is a narrower bandpass filter with a 3nm full width half maximum, offering a higher degree of selectivity and thus more precise measurement results. The 3nm variant also features an optical density of OD5 with a peak transmission of over 90%.
These filters are available in standard diameters of 10mm, 12.7mm and 15mm, with custom sizes available upon request.