公开(公告)号：US20220299689A1

公开(公告)日：2022-09-22

申请号：US17573714

申请日：2022-01-12

申请人： Omega SA

发明人： Corina BARBOS ,  Frédéric JEANRENAUD ,  Gregory KISSLING

IPC分类号： G02B5/28 ,  C23C28/00

摘要： An external part including a substrate and a coating composed of the following successively superimposed layers; an opaque or semi-opaque reflective layer, configured to have a reflectance of at least 90% for wavelengths including between 600 nm and 780 nm, a transparent or semi-transparent layer, having a refractive index to include between 1.45 and 2.8 for a wavelength of 630 nm, an absorbent layer, the layers giving the coating a predetermined interference colour.