| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical item, for example, an ophthalmic lens in which the interference fringe phenomenon occurring at the interface between a substrate and a polymeric material layer is significantly mitigated, and which is stable in time and more particularly, photodegradation resistant. <P>SOLUTION: The optical item comprising an organic or mineral glass substrate 1 and a transparent polymeric material layer 3 is characterized in that it includes at least one intermediate layer 2 in direct contact with one main side of the substrate and the polymeric material layer, the intermediate layer being made of particles of at least one colloidal mineral oxide and optionally of a binder, such an intermediate layer having an initial porosity, and the initial porosity of the intermediate layer being filled either by material from the polymeric material layer or by the substrate material if the substrate is made of an organic glass and, optionally partly by the binder when present, so that the intermediate layer, after initial porosity filling, each represent a quarter-wave plate 2 with a wavelength in the range from 400 to 700 nm, preferably from 450 to 650 nm. <P>COPYRIGHT: (C)2010,JPO&INPIT |
