Round Fresnel Lens 30-80mm Threaded Condenser for LED Spotlight DIY Projector VR Optics(42mmx50mm)

Precision threaded Fresnel devise concentrates and collimates light efficiently, reducing beam spread and enhancing output angle control for LED spotlights, stage lights, and flashlights. Crafted from optical-grade PMMA with 92% transmittance, delivering bright, clear images with minimal light loss for projection and magnification applications. Versatile size range from 30mm to 80mm diameter, 2mm thickness, fits diverse DIY projector builds, VR headset prototypes, and optical benchtop experiments. Durable acrylic construction withstands extreme temperatures from -40°C to +80°C, ensuring reliable performance in demanding lighting or outdoor environments. Suitable for magnifying fine details, optical research, product development, and custom lamp modifications—ideal for hobbyists, engineers, and educators.