3results about How to "Avoid electrification" patented technology

The invention relates to a timepiece component comprising a base plate (2), a first interference layer (4) in direct or indirect contact with the base plate (2), and a second interference layer (3) covering the first interference layer (4), the first interference layer (4) being characterized in that it has a thickness of between 3 nm and 250 nm and is made of a first material that is optically transparent in the visible range of 380 nm to 780 nm, the refractive index n of the first material being less than or equal to 2 throughout said visible range, the second interference layer (3) being characterized in that it has a thickness of between 3 nm and 80 nm and is made of a second material whose refractive index n and absorption coefficient k reach values greater than or equal to 3 and greater than or equal to 0.5, respectively, in at least part of said visible range.