Double Concave LensesOuter diameter: φ 17.979~ φ 17.994 Thickness: 1.154 ± 0.03mm Core deflection: 50 "Send InquiryLive chatProduct DetailDouble Concave LensesShare:PREVIOUS:Double Concave LensesNEXT:Double Convex LensesRelated ProductsFixed Focal Length Lenses-f 1.8mmFixed Focal Length Lenses-f 2.65mmFixed Focal Length Lenses-f 4.0mmDouble Convex LensesDouble Concave Aspheric LensesConacave-convex Aspheric Lenses