Dichroic filters (0°) These Dichroic Filters consist of thin-film dielectric coatings on glass with sharp transitions between the transmitted and reflected bands. Having negligible absorption they are suitable for high powers and do not show the strong fluorescence of certain glass filters. Where strong blocking is needed, however, glass filters or band pass interference filters are recommended. Data are given for normal incidence if used at 45 deg the shift towards shorter wavelengths is about 35-50nm.
Knight Optical > Filters > Dichroic filters (O°) > Long-pass filters 25 diameter (mm) This is the section containing 25 diameter (mm). 50 x 50 (mm) This is the section containing 50 x 50 (mm). Only UK and EU customers are charged VAT at 17.5%, customers outside the EU and EU customers based outside the UK who have a valid EU VAT number will not be charged VAT Bulk Discounts! Where (B) appears next to a price below, bulk prices are available, click the (B) button to view! Knight Optical > Filters > Dichroic filters (O°) > Long-pass filters
Specification   Diameter: +0.0 / -0.2 mm Length/width: ± 0.2 mm Thickness: ± 0.25 mm Surface quality: <60-40
Specific requirements We can manufacture Dichroic Filters to any size at short notice, so if your requirements are not listed please contact us by telephone / fax or email: stockrequirement@knightoptical.co.uk Options available   · Cutting down or edged to special shapes and sizes   · Special sizes   · Mounting (circles) Technical Data Sheets Set of transmittance curves are available for each filter on request, please specify type. See also For a full range of hot mirrors see: Hot mirrors