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 ProductsD-cut Shape LensesEFL:13mm F#:0.9Lenses For Automotive LensOptical Spherical Glass FiltersAspherical Plastic LensBroad Band AR (BBAR) Coating