Data Sheet SCHOTT N-BK 7® 517642.251 n n d e = 1.51680 = 1.51872 ½ ½ d e = 64.17 = 63.96 n n F F'--n n C C' = 0.008054 = 0.008110 Refractive Indices » [nm] n2325.42325.41.48921 n1970.11970.11.49495 n1529.61529.61.50091 n1060.01060.01.50669 nt 1014.01.50731 ns 852.11.50980 nr 706.51.51289 nC 656.31.51432 nC' 643.81.51472 n632.8 632.81.51509 nD 589.31.51673 nd 587.61.51680 ne 546.11.51872 nF ...

BK7 is a high quality optical glass that is used whenever the additional benefits of fused silica are not required. Since BK7 performs well in all chemical tests, and no additional or special handling is required, costs of manufacturing are reduced.

The coefficient of thermal expansion (CTE) describes a material’s tendency to expand or contract with a change in temperature. A positive CTE would describe a material that expands with increases in temperature, and a negative CTE describes a material that contracts with increases in …

N-BK7 is a softer glass that is significantly more sensitive to thermal variations than either fused quartz or low CTE materials such as Zerodur so special considerations have to be made in manufacturing to adjust for these properties.

SCHOTT N-BK7® 玻璃代码: 517642.251. 要使用所有商店功能，请sign in或register。

N-BK7 is a very pure universal optical glass made by SCHOTT. It is one of the most common standard glass types used to produce high-quality optics, mainly for the visible spectrum. The relatively hard borosilicate crown material consists of the purest raw ingredients.

SCHOTT AG is a German multinational company renowned for its expertise in specialty glass and glass-ceramics. Founded in 1884, the company has been a pioneer in the field, with innovations that have significantly impacted a variety of industries, including healthcare, home appliances, electronics, and optics.

“N”-glass as an environmentally friendly alternative to conventional lead and arsenic-containing glass types. Find more information in the tabs below or on our website. Compare glass types with our Interactive Abbe Diagram. Need help or a quote?

TECHSPEC N-BK7 楔形窗口片通常用作Fused Silica Wedged Windows的经济高效替代品，用于不需要 UV 透射或不需要高热稳定性的应用，例如低功率可见光或 NIR 激光。楔形窗口片还可用作光束采样器或光束拾取光学元件，以监测激光光束特性，例如随时间变化的光束功率。

肖特bk7是一种具有特殊光学均匀性的硼硅酸盐冠玻璃。 当对玻璃的透射和反射质量有特别高的要求时就可使用这种玻璃。 BK7也是一种非常纯净的通用光学玻璃。