The invention provides an optical element comprising a substrate having provided thereon a coating of an organic zirconium compound, a coating of a fluorine-free polyimide resin and a coating of a fluorine-containing polyimide resin, in this order. The element has increased adhesive property with the substrate and reliability.
本发明提供了一种光学元件,它由基板组成,基板上依次涂有
有机锆化合物涂层、无
氟聚
酰亚胺树脂涂层和含
氟聚
酰亚胺树脂涂层。该元件与基板的粘合性和可靠性均有所提高。