Reflector with a resistant surface

Details Reflector with a resistant surface Reflector with a resistant surface

2005-02-01

2005-02-01

Shafer, Ricky D. (Department: 2872)

Optical: systems and elements

Mirror

With support

C359S884000, C359S584000

Reexamination Certificate

active

06848797

ABSTRACT:
A reflector with high total reflection which is resistant to mechanical stresses. The reflector comprises a reflector body and superimposed thereon (a) a functional coating such as a varnish, (b) a reflecting layer structure composed of a reflecting metallic layer and optionally arranged thereon one or several transparent ceramic layers, for example, layers having an optical depth of λ/2. The reflecting layer structure contains, as its surface layer, a protective layer. The protective layer is a silicon oxide of general formula SiOx, wherein x is a number from 1.1 to 2.0, or it is aluminum oxide of formula Al2O3, in a thickness of 3 nm or more. The protective layer protects the underlying layers from mechanical damages. In the DIN 58196 abrasion test the protected surface does not show any damages after 50 test cycles with 100 abrasion strokes.

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