Broad band antireflection coating and method of making same

Details Broad band antireflection coating and method of making same Broad band antireflection coating and method of making same

G - Physics

02

B

G02B 1/10 (2006.01) B32B 7/02 (2006.01)

Patent

CA 2616105

A coated article (3) includes a broad band antireflection (AR) coasting that utilizes aluminum oxynitride (AlOxNy) (5) in the medium index (index refraction "n") layer of the coating. In certain example embodiments, the coating may include the Following layers from the glass substrate outwardly: aluminum oxynitride (AlOxNy) medium index layer/high index layer/low index layer (5/7/9). In certain example embodiments, depending on the chemical and optical properties of the low and high index layers and the substrate, x and y of the aluminum oxynitride (AlOxNy.) of the medium index layer can be selected to optimize the overall performance of the broad band antireflection coating.

L'invention concerne un article revêtu comprenant un revêtement antireflet (AR) à large bande qui utilise de l'oxynitrure d'aluminium (AlOxNy) dans l'indice moyen (indice de rétraction "n") de la couche de revêtement. Dans certains modes de réalisation exemplaires, le revêtement peut comprendre les couches suivantes fabriquées à partir de substrat de verre externes: une couche d'indice moyen d'oxynitrure d'aluminium (AlOxNy)/une couche d'indice élevé/une couche d'indice faible. Dans certains modes de réalisation exemplaires, en fonction des propriétés chimique et optique des couches d'indice faible et élevé et du substrat, x et y de l'oxynitrure d'aluminium (AlOxNy) de la couche d'indice moyen pouvant être sélectionnés afin d'optimiser la performance globale du revêtement antireflet à large bande.

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