Crafted from premium materials, our Diffuse Reflection s ensures optimal performance in various laboratory applications. With a diameter of 20mm and a thickness of 2mm, this optical filter is designed for precise light diffusion and reflection. Achieves high surface accuracy at /4@632.8nm, making it ideal for scientific experiments and optical setups. Features a thickness tolerance of ±0.05mm and over 90% effective aperture for reliable and consistent results. Manufactured using cold working processes, this s filter is free from harmful chemicals, ensuring safety and .