FL28-120 Round Fresnel Lens 20-100mm PMMA Threaded Capacitor for LED Spotlight Projector DIY VR, 1pcs(90mmx50mm-01)

High precision threaded Fresnel structure concentrates and collimates 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, which ensures clear and bright projection and minimal light loss for DIY projectors and VR headsets. Available in 10 diameters (20–100 mm) with a uniform thickness of 2 mm and a thread pitch of 0.015 mm (100 mm/FL120 mm uses 0.02 mm), offering flexible design options for various optical constructions. Wide operating temperature range from -40°F to +176°F, which provides stable performance in both indoor and outdoor lighting or experimental environments. Suitable for observation with magnification of images or fine details, optical experiments, research and product development; versatile for hobbyists, engineers and educators.