Borosilicate Crown Glass – BK7
BK7 is a glass with excellent optical quality. It is a hard material which is almost completely free of bubbles and other inclusions. Borosilicate Crown Glass provides uniform transmission in the visible and a very high refractive index homogeneity.
Borosilicate Crown Glass – BK7 is typically used as a base material for precision optics, and for windows, lenses, and prisms. It is also used as a substrate for mirror and filter coatings, measurement and sensor-technology use.
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