Premium H-K9L optical glass construction ensures superior clarity and durability for exceptional optical performance. Versatile application wavelength range of 400-1100nm, making it ideal for various photography and optical experiments. Precise optical density range of 0.1 to 1.0, allowing for accurate light control and exposure adjustments in your projects. Compact dimensions of 12.5mm or 25mm diameter and 50x50mm size, perfect for fitting in various optical setups and equipment. Each filter is meticulously crafted with a wavefront transmission error of λ/4@633 nm and a dimensional error of +0.0/-0.1mm for reliable and consistent results.
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