The owner operated family company KORTH KRISTALLE GMBH has been growing crystals from the melt of high purified salts since 70 years and is based in Kiel / Altenholz. We offer a variety of crystal materials including fluorides and other halogenides, oxides, glasses and semiconductors. In the on-site optic production the crystals are processed with modern and traditional polishing methods to optical components. Our product range covers the entire area of the light spectrum (VUV-FIR) and includes optical windows, spherical lenses, prisms, beamsplitters, mirrors, filters, special optics with holes, wedges and stepped windows. All optics upon request also with coating and everything according to your specifications. Whether for individual components or massed produced parts.