FL28-120 Round Fresnel Lens 20-100 mm PMMA Threaded Capacitor for LED Spotlight DIY VR Projector, 1 pcs(42mmx40mm-01)

High precision threaded Fresnel construction concentrates and collimates the light, ideal for LED spotlights, stage lights, flashlights and fishing lights to adjust beam angle and output. Made of optical grade PMMA/Acrylic with 92% light transmittance, ensures bright and clear projection and minimal light loss for DIY projectors and VR headsets. Available in 10 diameters (20-100mm) with a uniform thickness of 2mm and a 0.3mm thread pitch (100mm/FL120mm uses 0.5mm), offering flexible design options for various optical configurations. Wide operating temperature range from -40°F to +176°F, providing stable performance in both indoor and outdoor lighting or experimental environments. Suitable for magnifying the observation of images or fine details, optical experiments, product research and development: versatile for hobbyists, engineers and educators.