20mm/30mm Round Fresnel Lens 50mm Focal Length PMMA Acrylic Threaded Solar LED Condenser for DIY Projector VR Optics(20mm)

High-transmittance PMMA material (92%) delivers bright, clear light concentration for LED lamps, stage lights, flashlights, and fishing lights, effectively adjusting beam angle and output. Threaded flat devise (0.3mm pitch, 1.8mm thickness) ensures easy integration into optical housings, compatible with DIY projectors, VR glasses, and custom optical prototypes. Versatile for magnifying small objects or surface details, ideal for inspection, hobby crafting, and close observation tasks requiring distortion-free clarity. Reliable performance across a wide temperature range (-40°C to +80°C), suitable for both indoor and outdoor optical experiments, research setups, and product development. Compact round shape in 20mm or 30mm diameter options, offering flexible focal length of 50mm for precise light control in solar concentrators, sensors, and educational physics kits.