PMMA Fresnel Optical Lens: 150mm diameter, 2mm thickness, 92% light transmission for bright and clear focus and magnification. 3X Magnification Power: Ideal for reading, inspecting and magnifying small objects; Works as flat magnifier or projection lens. Dual focal length options: Choose a 50mm or 70mm focal length to suit solar concentration, stage lighting, or DIY projectors construction. VERSATILE APPLICATION - Compatible with solar hubs, flashlights, stage lamps and optical experiments; Lightweight and durable PMMA construction. Precision optical device: Fresnel smooth grooves ensure even light distribution and efficient focusing for amateur and professional use.
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