1pcs PMMA Convex Acrylic Lens Diameter 10mm-66mm Aspherical Optical

PRECISION CONVEX DEVICE - This PMMA acrylic lens features a flat convex structure with an aspherical surface, which optimizes light and reduces spherical aberration for brighter and more uniform beam output in zoomed flashlights and spotlights. WIDE DIAMETER RANGE - Available in sizes 10mm, 18mm, 20mm, 2.2cm, 23mm, 25mm, 28mm, 29mm, 32mm, 34mm, 38mm, 42mm, and 45mm 2 in to 2 in 15.2 mm, which ensures compatibility with various models of LED flashlights, bicycle headlights and flashlights. DURABLE PMMA MATERIAL - Made of acrylic (PMMA) with excellent light transmission and impact resistance, offering a lightweight yet sturdy alternative to glass lenses for DIY and outdoor lighting projects. EASY REPLACEMENT & UPGRADE - Designed as a direct replacement lens for zoomed LED flashlights, bike headlights and spotlights, just change the old lens to restore or improve the focus performance of your light. VERSATILE OPTICAL APPLICATION - Ideal for optical experiments, DIY lantern modifications, or camping lantern repair, this aspherical lens helps achieve a crisp, adjustable beam from flood to spot with minimal distortion.