10-38mm Acrylic Convex Condenser Lens for Zoom Flashlight, Bike Head Lamp, DIY Optical Project 1pcs(1pcx23mm)

Versatile Size Range: Includes 12 diameters (10mm, 15mm, 18mm, 20mm, 23mm, 25mm, 28mm, 29mm, 30mm, 32mm, 35mm, 36mm, 38mm) to fit various zoom flashlights, bike head lamps, and DIY optical projects. Precision Optical Performance: Flat-convex aspheric devise with PMMA acrylic material ensures efficient light condensation and uniform beam projection, ideal for focusing applications. Durable & Lightweight: Made from PMMA Reusableplastic, this lens is impact-resistant, lightweight, and resistant to yellowing, ensuring long-lasting clarity in outdoor or high-heat environments. Easy Integration: Each lens measures approximately 3mm thickness (varies by diameter), with manual size tolerance within ±0.3mm, compatible with standard flashlight housings and DIY lens holders. Single Piece Pack: You receive 1 piece of the selected diameter lens, individually wrapped to prevent scratches, ready for replacement or custom optical builds.