Double convex lensformula

Optically True, Double Convex Lens50mm Diameter, 100mm Focal LengthHigh quality, optically true lens. Made of highly polished, quality glass. Spherical with ground edges. Designed for educational purpose and science classroom demonstrations in optics and light physics. Lens measures 2" (50mm) in diameter, and has a converging focal length of 100mm.Eisco Labs proudly manufactures its own products using state-of-the-art equipment, and following the highest standards of quality control.Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind. They are manufactured with only the highest grade, raw materials and according to international quality standards to ensure that they can withstand use in even the toughest laboratory environments.