In many cases, only one side of a substrate must have a high surface quality or flatness, because a substrate usually is not used in transmission. However, if required our glass substrates can of course be double side polished (see "Optical Windows"). They can be customized for special surface quality or flatness requirements. Also custom coatings can be done per coating batch. We manufacture high quality optical substrates of nearly any suitable glass material available on the market.
If you cannot find the optical substrate or materials that you are looking for in the list above, please use our RFQ form, send us your e-mail request, send us a fax, or just call. We also manufacture optical substrates of materials not listed above.