Rear surface mirror

Details Rear surface mirror Rear surface mirror

F - Mech Eng,Light,Heat,Weapons

21

V

F21V 7/22 (2006.01) C03C 17/36 (2006.01) G02B 1/10 (2006.01) G02B 5/08 (2006.01)

Patent

CA 2573725

The invention relates to a rear surface mirror comprising a substrate (2) which is transparent to the light that is to be reflected and a silver layer (3) applied to the rear face thereof. A first intermediate layer (4) that is made of or contains a refractory oxide and has a higher melting point than silver is inserted as a bottom layer in at least some areas between the substrate and the silver layer. Another covering layer (6) that is made of or contains one of the refractory metals ruthenium, iridium, osmium, palladium, platinum, rhenium, and/or rhodium is applied in at least some areas on the side of the silver layer which faces away from the substrate.

L'invention concerne un miroir à surface réfléchissante postérieure, qui comprend un substrat (2) transparent à la lumière à réfléchir, ainsi qu'une couche d'argent (3) appliquée sur sa face arrière. Entre le substrat et la couche d'argent est intercalée, au moins par endroits, une première couche intermédiaire (4) qui sert de sous-couche, qui est constituée d'un oxyde à point de fusion élevé ou qui contient un tel oxyde et qui présente un point de fusion supérieur à celui de l'argent. Sur la face, opposée au substrat, de la couche d'argent est appliquée, au moins par endroits, une autre couche de recouvrement (6) qui est constituée d'un métal à point de fusion élevé, notamment ruthénium, iridium, osmium, palladium, platine, rhénium et/ou rhodium, ou qui contient ces métaux.

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