50mm Round Fresnel Lens, 28-100mm PMMA Acrylic Focal for LED Light, DIY Projector Optics(50mm)

Precision molded PMMA acrylic lens with 92% light transmittance, offering clear and efficient light concentration for LED applications, stages and flashlights. Versatile focal length range (28-100mm) allows flexible beam angle adjustment, suitable for optical experiments, DIY projectors, VR headsets and magnifying glass observation. Durable and lightweight device with 2mm thickness and 0.015mm thread pitch, temperature resistant from -40°F to +176°F for reliable long-term use. Flat structure with smooth optical surface, compatible with standard 50mm mounts and mounts, ideal for custom lighting and optical product development. Widely used in lamp modification, capacitor systems and scientific research; a practical component for hobbyists, engineers and educators.