Fresnel Lens PMMA Threaded Condenser for LED Light Projector VR(D42mm-FL40mm)

PREMIUM PMMA MATERIAL: Made of PMMA acrylic with 92% light transmittance, this round Fresnel lens delivers clear and bright optical performance for LED light, projector, and VR applications THREADED CONDENSER devise: The threaded edge allows easy mounting and adjustment, making this concentric condenser lens ideal for tuning beam angle and light output in stage lights, flashlights, and fishing lights MULTIPLE : Choose from D20mm to D70mm diameters with various focal lengths (FL50mm and more), each lens is 2mm thick with 0.3mm thread pitch for precise fitting WIDE APPLICATION: Perfect for DIY projectors, VR glasses, magnifying observation, optical experiments, research, and optical product development projects STABLE PERFORMANCE: Operates reliably in temperatures from -40°C to +80°C, this optical Fresnel lens maintains consistent light transmission for long-term use