10-38mm PMMA Flat Convex Condenser Lens Aspheric Optical for Zoom Flashlight & Bike Head Lamp Replacement(1pcx37.8mm)

Precision Optical Performance: This Flat-convex condenser lens is made from PMMA (acrylic) material, devised to concentrate and collimate light effectively for enhanced beam intensity in zoom flashlights and bike head lamps. Versatile Size Selection: Available in 12 popular diameters from 10mm to 38mm (10, 15, 18, 20, 23, 25, 28, 29, 30, 32, 35, 36, 38mm), allowing you to find the perfect fit for your specific DIY or replacement project. Aspheric devise: The aspheric surface reduces spherical aberration and improves light transmission efficiency, delivering a clearer and more uniform beam pattern compared to standard spherical lenses. Durable & Lightweight: Crafted from durable yet lightweight PMMA Reusableplastic, this lens is resistant to impact and suitable for portable lighting applications. Manual size measurement with an error tolerance within 0.3mm. Easy Installation: Each package includes 1 piece of lens. Compatible with various zoom flashlights, bike head lamps, and other optical devices requiring a Flat-convex condenser lens.