Round Fresnel Lens PMMA Threaded Condenser 20-70mm for LED Light Projector VR Optics,1pcs(D40mmxFL50mm)

Precision-molded PMMA acrylic Fresnel lens with 92% light transmittance, ideal for adjusting beam angle and output in LED lights, stage lights, flashlights, and fishing lamps. Threaded concentric groove devise (0.3mm pitch) effectively condenses and focuses light, suitable for DIY projectors, VR glasses, and optical experiments. Available in multiple diameters (20mm, 40mm, 42mm, 50mm, 60mm, 70mm) with customizable focal length options, compatible with various optical setups and product development. Ultra-thin 2mm profile with durable acrylic construction, operating reliably in temperatures from -40°C to +80°C for versatile indoor and outdoor use. Enhance magnification of images or fine details in observation tools, research equipment, and prototype optical systems; each package includes one lens.