• Plano-Convex • Plano-Concave • Bi-Convex • Bi-Concave • Meniscus • Grating Substrates • Reticle Substrates • Sizes from 3.0 - 150.0 mm ø • In-House Coatings Made with optical glass or glass-like materials, filter glass, fused silica (quartz), Zerodur and Pyrex. We can produce 1/10 wave accuracy and control wedge to seconds. Tolerances are matched to your specifications. We coat our optics in-house. Choose from simple to multi-layer coatings designed to meet your requirements.