50mm Fresnel Lens PMMA Acrylic Threaded Condenser Focal 28-100mm for LED DIY Projector(2 pcsx 40mm)

High-grade PMMA acrylic material with 92% light transmittance ensures bright, efficient light collection and minimal loss for optical applications. Precision 0.3mm thread pitch and 2mm thickness provide consistent focal performance, ideal for adjusting beam angles in stage lights, flashlights, and LED lamps. Versatile focal length options from 28mm to 100mm allow flexible use in DIY projectors, VR headsets, magnifying viewers, and detailed image observation. Wide operating temperature range from -40°C to +80°C ensures stable performance in various environments, suitable for both indoor and outdoor lighting fixtures. Round devise with smooth edges fits standard 50mm holders, perfect for optical experiments, research projects, and custom optical product development.