Lithium Fluoride(LiF) Double-Concave Lenses
Fused Silica(UVFS)Double-Concave Lenses
N-BK7 Double-Concave Lenses
Zinc Selenide (ZnSe) Double-Concave Lenses
Zinc Sulfide (ZnS) Double-Concave Lenses
Germanium(Ge) Double-Concave Lenses
Silicon(Si) Double-Concave Lenses
Magnesium Fluoride(MgF2) Double-Concave Lenses
Barium Fluoride(BaF2) Double-Concave Lenses
Calcium Fluoride(CaF2) Double-Concave Lenses