PMMA Flat and Convex Acrylic Lens Set, 5 Pieces, Transparent Condenser 10-38mm(5pcsx30mm)

PRECISION OPTICAL GRADE PMMA - Made from high transparency PMMA (acrylic) material, these convex flat lenses provide excellent light transmission and focusing performance for LED zoom flashlights and bike lights. VERSATILE SIZE SET - Includes 5 pieces in sizes 10mm, 15mm, 18mm, 20mm, 23mm, 25mm, 28mm, 29mm, 30mm, 32mm, 35mm and 38mm 6 in (one size per set, please select the required diameter). Each lens is measured manually with a tolerance of ±0.3mm. Flat convex device: the flat shape on one side and convex on the other effectively concentrates and directs light beams, making it ideal for zoomable flashlight heads and optical improvements of bicycle lights. EASY INSTALLATION & USER-FRIENDLY DIY: Lightweight and easy to handle, these acrylic lenses can be directly placed into the lens holder of compatible flashlights or headlights. Perfect for hobbyists, repair technicians and DIY lighting projects. Wide application: suitable for LED zoom flashlights, bicycle lights, camping lights, floodlights and other optical focus systems. Not compatible with machine modules or high temperature applications.