50mm PMMA Fresnel Lens Circular Optical Acrylic Magnifier for DIY Projector VR Focusing(Focal Length 45mm)

Precision 50mm diameter circular Fresnel lens with 0.3mm pitch and 2mm thickness, devised for compact optical setups requiring consistent focal performance. Crafted from optical-grade PMMA (acrylic) with 93% light transmittance, delivering bright, clear projection and magnification for DIY projectors, VR headsets, and light-focusing experiments. Versatile focal length range of 28-60mm supports flexible positioning in custom builds, including plane magnifiers, concentric focusing systems, and lens arrays. Wide operating temperature range from -40°C to 80°C ensures reliable use in varied environments, while the lightweight, shatter-resistant acrylic construction enhances durability. Includes 1 piece of round Fresnel lens, ready for integration into educational kits, optical prototypes, or replacement in existing magnifying and projection devices.