The premium H-K9L optical glass construction ensures high durability and clarity for superior images in photography and optical applications. Available in multiple sizes (12.5mm, 25mm and 50x50mm) to meet your different needs and compatibility with different optical devices. Designed for a wide range of application wavelengths of 400-1100nm, making it ideal for various lighting conditions and environments. It has an optical density range of 0.1 to 1.0, allowing precise control over light transmission and exposure in photography. The surface finish of 40/20-60/40 ensures minimal distortion and performance, with wavefront transmission error of λ/4 at 633nm.
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