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 photographic and optical experiments. Accurate optical density range from 0.1 to 1.0, allowing precise light control and exposure settings in your projects. Compact dimensions of 12.5mm or 25mm in diameter and size of 50x50mm, perfect for installing in various configurations and optical equipment. Each filter is meticulously crafted with a wavefront transmission error of λ/4@633 nm and a dimensional error of +0.0/-0.1 mm for reliable and consistent results.
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