5Pcs PMMA Flat Convex Acrylic Lens Set 10-38mm Transparent Condenser Lens(5pcsx23mm)

Precision Optical Grade PMMA: Crafted from high-transparency PMMA (acrylic) material, these Flat convex lenses offer excellent light transmission and ing performance for zoom LED flashlights and bike head lamps. Versatile Size Set: Includes 5 pieces in sizes 10mm, 15mm, 18mm, 20mm, 23mm, 25mm, 28mm, 29mm, 30mm, 32mm, 35mm, and 38mm (one size per set, please select your required diameter). Each lens is manually measured with a tolerance within ±0.3mm. Flat Convex devise: The flat on one side and convex on the other shape effectively concentrates and directs light beams, making it ideal for zoomable flashlight heads and bicycle lamp optics upgrades. Easy Installation & DIY Friendly: Lightweight and easy to handle, these acrylic lenses can be directly placed into the lens holder of compatible flashlights or headlamps. Perfect for hobbyists, repair technicians, and DIY lighting projects. Wide Application: Suitable for zoom LED flashlights, bike head lamps, camping lights, searchlights, and other optical ing systems. Not compatible with machine modules or high-heat applications.