10-38mm PMMA Flat Convex Acrylic Lens, Aspheric Optical Condenser Lens(5pcx18x6.3mm)

Precision Optical devise: Aspheric Flat-convex structure effectively focuses and condenses light, reducing spherical aberration for a clearer, more concentrated beam in zoom LED flashlights and bike head lamps. Versatile Size Selection: Available in diameters 10mm, 18mm, 20mm, 21.8mm, 23mm, 25mm, 28mm, 29mm, 32mm, 35mm, and 38mm to fit various flashlight and lamp housings. Durable PMMA Material: Made from high-transparency acrylic (PMMA) with excellent light transmission and impact resistance, ensuring long-lasting performance in outdoor and daily use. Easy Installation & DIY Friendly: Lightweight Reusableplastic lens with manual size tolerance within 0.3mm; compatible with standard flashlight lens slots for quick replacement or custom builds. Flexible Quantity Options: Choose 1 piece or 5 pieces per order to match your project needs, whether for single repair or multiple upgrades.