10-38mm PMMA Flat Convex Acrylic Lens, Aspherical Optical Condenser Lens(1pcx18x8.4mm)

Precision Optical Grade: Made with high transparency PMMA acrylic material, this flat convex lens offers excellent light transmission and focusing performance for zoomable LED flashlights and bike headlights. MULTIPLE SIZE OPTIONS - Available in diameters of 10mm, 18mm, 20mm, 23mm, 25mm, 28mm, 29mm, 32mm, 35mm and 38mm. Choose 1 piece or 5 pieces per package to meet your specific DIY or replacement needs. Aspherical -convex device: Aspherical surface reduces spherical aberration and improves beam uniformity, making it ideal for capacitor applications in optical devices and high intensity lighting. DURABLE & LIGHTWEIGHT - Made with durable PMMA reusable plastic, this lens is impact resistant and lightweight, for portable and outdoor lighting equipment such as bicycle headlights and handheld flashlights. EASY TO INSTALL AND REPLACE - Manual measurement of the size with an error of 0.02mm ensures a fit for most standard flashlights and lamp housings. Simple replacement for upgrading or repairing your optical.