K9 Optical Glass 100mm Focal Length Double Convex Lens Magnifying Lens

Features: 100percent brand new and high quality It is made of premium K9 glass ,crystal clear,with great Optical performance It is coated with anti reflection film on the double sides It can be used for Physical Optics experiment lens It has 2.5 X magnifying factor,for diy magnifying lens Specification: Diameter: 30mm 1.2in Focal length: 100mm 3.9in Center thickness :5mm Edge thickness: 2.8mm R = 15 mm Material :K9 optical glass Double coated with anti reflective film Magnification: 2.5 times Package list: 1 x Double Convex Lens .