Profile: Crystran Ltd is a manufacturer and supplier of optical components. We also manufacture windows, lenses, prisms and specialist optics as both standard products and to the designs of our customers. We are an ISO 9001 certified company. Our products are used in a wide variety of ultraviolet, visible and infrared optical systems by an equally wide variety of customers. We work with calcium fluoride, magnesium fluoride, barium fluoride, zinc selenide, zinc sulfide, germanium and many more exotic materials.