10-38mm Flat Convex Aspherical PMMA Lens for Zoom LED Flashlight Bicycle Head Lamp, 1pc/5pcs Optical Acrylic Capacitor (1pcx18x8.4mm)

Versatile size options: Available in diameters 10 mm, 18 mm, 20 mm, 21.8 mm, 23 mm, 25 mm, 28 mm, 29 mm, 32 mm, 35 mm and 38 mm. Choose 1 piece or 5 pieces to match your specific zoom flashlight or bike headlight project. PMMA material: Made of transparent acrylic (PMMA) with excellent light transmission and durability. The flat convex aspherical device focuses and focuses light effectively for brighter, more concentrated rays. Aspherical optical device: The aspherical surface reduces spherical aberration and improves the uniformity of light, making it ideal for zoom LED torches, bicycle headlights and other optical applications that require precise light control. Easy to install and replace: Compact and lightweight lens with a standard flat convex structure. Manual size measurement ensures a tolerance of 0.3mm for a reliable fit in most flashlight lens housings. Wide application: perfect for DIY torch upgrades, optical experiments, replacing condenser lenses or individual lighting projects. Compatible with various zoom LED flashlights and bicycle headlights.