Square Fresnel Lens 30x30 40x40 50x50 100x100mm PMMA Acrylic DIY Projector Condenser Magnifier(50x50mm-FL70mm)

Precision-molded PMMA acrylic Fresnel lens with 92% light transmittance, delivering bright, focused beams for DIY projectors, solar condensers, and stage or fishing lights. Available in multiple sizes (30x30mm, 40x40mm, 50x50mm, 100x100mm) with focal lengths clearly marked (e.g., FL28mm), allowing precise beam angle adjustment for custom optical setups. Threaded surface devise (0.3mm or 0.5mm pitch) enhances light concentration and uniformity, ideal for condenser applications, magnifying fine details, or optical research and development. Durable acrylic construction withstands temperatures from -40°C to +80°C, ensuring reliable performance in various lighting and experimental environments without warping or yellowing. Lightweight and only 2mm thick, this square lens is easy to mount, cut, or integrate into existing frames, making it a versatile component for hobbyists, engineers, and educators.