First surface mirror with dlc coating

Details First surface mirror with dlc coating First surface mirror with dlc coating

G - Physics

02

B

G02B 5/08 (2006.01) C03C 17/36 (2006.01) G02B 1/10 (2006.01)

Patent

CA 2469479

A first surface mirror includes a reflective layer (e.g., Al or Ag), at least one dielectric layer and at least one protective layer of or including high density diamond-like carbon (DLC). The high density DLC enables the protective layer to be applied at a relatively small thickness which enables undesirable color often associated with DLC to be prevented or minimized, while at the same time good protective characteristics (e.g., scratch resistance) can be realized.

Selon l'invention, un miroir de surface comprend une couche réfléchissante (par exemple, Al ou Ag), au moins une couche diélectrique et au moins une couche protectrice constituée de, ou comprenant du carbone sous forme de diamant amorphe haute densité (dépôt CDA). Le dépôt CDA haute densité permet d'appliquer la couche protectrice selon une épaisseur relativement faible, ce qui permet d'empêcher ou de réduire au minimum l'apparition de la couleur indésirable souvent associée au dépôt CDA, tout en permettant d'obtenir dans le même temps d'excellentes caractéristiques de protection (par exemple, résistance à la rayure).

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