The bi- convex lenses listed are made with BK7 glass however any glass type may be used. The lenses are designed to work best at 1:1 but can be used at any ratio.
The lenses have a standard AR coating but any type of multilayer coating may be ordered. Most lenses are in stock and can be shipped within 24 hours. Westech can produce a custom lens from any drawing or specification.
Don't Pay Catalog Prices for OEM Optics