10-38mm PMMA Convex Acrylic Condenser Lens for LED Zoom Flashlight, Bike Headlamp, DIY Optical Project-Pack of 1/5(5pcx12.5mm)

VERSATILE SIZE OPTIONS - Available in diameters of 10mm, 18mm, 20mm, 2.2cm, 23mm, 25mm, 28mm, 29mm, 32mm, 35mm and 38mm - choose 1 or 5 and and they fit them to your specific zoom torch or bicycle headlamp. PMMA Material: Made of durable clear acrylic (PMMA) with flat-convex structure and aspherical shape, which ensures efficient light condensation and uniform beam projection for LED applications. Precision Optical Performance: Designed as condenser lens for LED flashlight with zoom and bike headlights, effectively focuses light to improve brightness and range without distortion. Easy Integration: Compact and lightweight, compatible with standard flashlight housings and DIY optical projects. Manual measurement of size with error within 0.3mm ensures reliable fit. MULTIPURPOSE USAGE - Ideal for flashlight upgrades, bicycle headlight modifications, optical experiments and other LED lighting systems that require a flat-convex or aspherical lens.