Achromatic lenses are the combination of positive and negative elements with

Plano-convex cylinder lenses, plano-concave cylinder lenses

Schmidt prisms, Penta Roof-Angle prisms, Polygonal prisms, Porro prisms, Pechen prisms

Delfa manufactures huge numbers of optical windows every year,

Delfa has thousands of radius tooling for making any kinds of general spherical

Delfa can manufacture color glass and band-pass filter glass with different sizes