Device for receiving an optical element made from crystalline calcium fluoride comprises an intermediate element arranged between a unit for holding the optical element and the optical element

摘要

Device for receiving an optical element made from crystalline calcium fluoride comprises an intermediate element (9) arranged between a unit (2) for holding the optical element and the optical element. The intermediate element has a lower heat absorption than the unit for holding the optical element. The optical element is coated with a functional layer in a vacuum deposition device. Preferred Features: The intermediate element is connected to the holding unit via supporting elements (10) made from poor heat conducting material. The intermediate element has a reflecting coating made from gold. The intermediate element is made from an aluminum alloy. The supporting elements are cylindrical, spherical or conical and are made from ruby or ceramic.