200mm Round Acrylic Fresnel Lens, 350mm Focal Length Concave Magnifier for Wide Field LED Optics

Precision-molded acrylic Fresnel lens with 200mm diameter and 2mm thickness, offering a wide field of view for optical experiments, LED light shaping, and projection systems. Negative -350mm focal length creates a true concave magnifying effect, ideal for beam divergence, image reduction, or expanding light coverage in custom optical setups. High 93% light transmission ensures minimal loss, delivering bright and efficient performance for LED collimation, display backlighting, or solar concentration applications. Threaded edge devise simplifies mounting and integration with standard lens holders or DIY frames, providing secure and stable positioning during use. Lightweight acrylic construction (approx. 65g) resists shattering and reduces overall system weight, making it safe and convenient for educational, hobby, and professional prototyping.