Circular Optical Acrylic Magnifier with 50mm PMMA Fresnel Lens for DIY Projector, VR Focus(Focal Length 80mm)

50mm diameter precision circular Fresnel lens with 0.2mm pitch and 2mm thickness, designed for compact optical configurations requiring consistent focal performance. Crafted from optical grade PMMA (acrylic) with a light transmittance of 93%, it offers bright and clear projection and magnification for DIY projectors, VR headsets and light focus experiments. The versatile focal length range of 28-60mm supports flexible positioning in custom constructions, including flat magnifiers, concentric focusing systems, and lens assemblies. The wide operating temperature range of -40°F to 176°F ensures reliable use in varied environments, while the lightweight, shatter-resistant acrylic construction enhances durability. Includes 1 piece of round Fresnel lens, ready to integrate into educational kits, optical prototypes or replacement into existing projection and magnifying devices.