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H-K9L(N-BK7) Windows

The nd data of H-K9L is 1.5168,vd data is 64.20. H-K9L is the alternative for N-BK7.H-K9L(N-BK7) is a RoHS-compliant borosilicate crown glass. It provides excellent transmission in the visible and near infrared portions of the spectrum(350 nm - 2.0 µm). It is typically chosen whenever the additional benefits of UV fused silica. H-K9L(N-BK7) is probably the most common optical glass used in high-quality optical components. H-K9L(N-BK7) is a hard glass that can withstand a variety of physical and chemical stressors. It is relatively scratch and chemical resistant. It also has a low bubble and inclusion content, making it a useful glass for precision lenses.All of these H-K9L(N-BK7) high precision windows can be uncoated or with broadband AR coatings: 350 - 700 nm (VIS wavelength), 650 - 1050 nm , or 1050 - 1700 nm.
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