5pcs PMMA Set Flat Convex Acrylic Lenses 10-38mm Clear Condenser Lens (5pcsx52mm)

Precision Optical Grade PMMA Made of highly transparent PMMA (acrylic) material, these flat convex lenses provide excellent light transmission and focusing performance for zoom LED flashlights and bicycle headlights. VERSATILE SIZE SET Includes 5 pieces in sizes 10mm, 15mm, 18mm, 20mm, 23mm, 25mm, 28mm, 29mm, 30mm, 32mm, 35mm and 38mm (one size per set, please choose your desired diameter). Each lens is measured manually with a tolerance of ±0.3 mm. Flat convex devise: The flat shape on one side and the convex shape on the other side effectively bundle and direct the light beams, making it ideal for zoomable torch heads and upgrading bicycle lamp optics. EASY INSTALLATION & DIY FRIENDLY These lightweight and easy to use acrylic lenses can be inserted directly into the lens holder of compatible flashlights or headlamps. Perfect for hobbyists, repair technicians and DIY lighting projects. Wide application: suitable for zoom LED flashlights, bicycle headlights, camping lights, searchlights and other optical focusing systems. Not compatible with machine modules or high temperature applications.