Invention Grant
US07692855B2 Optical article having a temperature-resistant anti-reflection coating with optimized thickness ratio of low index and high index layers
有权
具有耐低温抗反射涂层的光学制品，具有优化的低折射率和高折射率层厚度比
- Patent Title: Optical article having a temperature-resistant anti-reflection coating with optimized thickness ratio of low index and high index layers
- Patent Title (中): 具有耐低温抗反射涂层的光学制品，具有优化的低折射率和高折射率层厚度比
-
Application No.: US11427199Application Date: 2006-06-28
-
Publication No.: US07692855B2Publication Date: 2010-04-06
- Inventor: Frédéric Arrouy , Olivier Beinat , Luc Nouvelot , Michèle Thomas
- Applicant: Frédéric Arrouy , Olivier Beinat , Luc Nouvelot , Michèle Thomas
- Applicant Address: FR Charenton-le-Pont
- Assignee: Essilor International Compagnie Generale d'Optique
- Current Assignee: Essilor International Compagnie Generale d'Optique
- Current Assignee Address: FR Charenton-le-Pont
- Agency: Fulbright & Jaworski L.L.P.
- Main IPC: G02B1/10
- IPC: G02B1/10
Abstract:
The present invention relates to an optical article having anti-reflection properties and high thermal resistance, comprising a substrate having at least one main face coated with a multi-layer anti-reflection coating comprising a stack of at least one high refractive index layer and at least one low refractive index layer, wherein the ratio: R T = sum of the physical thicknesses of the low refractive index layers of the anti - reflection coating sum of the physical thicknesses of the high refractive index layers of the anti - reflection coating is higher than 2.1. If the anti-reflection stack comprises at least one low refractive index layer having a physical thickness ≧100 nm which is not the outermost layer of the anti-reflection coating, said relatively thick layer and the underlying layers are not taken into account in RT calculation.
Public/Granted literature
Information query
