Optical system and method for repairing an optical lens of an optical system
An optical system comprising an optical lens •—the optical lens comprising a substrate ( 2 ) and a self-healing coating ( 3 ) extending along at least part of a surface of the substrate, the self-healing coating having a glass-transition temperature equal to or greater than 40° C. and equal to or smaller than 60° C., and •—the optical system comprising a heating component ( 4 ) adapted to heat the self-healing coating at a temperature above the glass-transition temperature of the self-healing coating.
1. An optical system comprising an optical lens, wherein:
the optical lens comprises a substrate and a self-healing coating extending along at least part of a surface of the substrate, the self-healing coating having a glass-transition temperature equal to or greater than 40° C. and equal to or smaller than 60° C.;
the optical system comprises a heating component adapted to heat the self-healing coating at a temperature above the glass-transition temperature of the self-healing coating;
an impact sensor adapted to sense an impact on the optical lens; and
an activator of the heating component, the activator being configured to activate the heating component when the impact sensor detects a shock on a surface of the optical lens.
2. The optical system of claim 1 , further comprising a spectacle frame and said optical lens being mounted on the spectacle frame.
3. The optical system of claim 2 , wherein the heating component is arranged in the spectacle frame.
4. The optical system of claim 1 , wherein the heating component is arranged in the optical lens.
5. The optical system of claim 4 , wherein the heating component is arranged in-between the substrate and the self-healing coating.
6. The optical system of claim 5 , wherein the heating component comprises a resistive layer and a pair of electrodes adapted to apply a current to the resistive layer so that the resistive layer heats up by Joule effect.
7. The optical system of claim 1 , wherein the heating component comprises a resistive material adapted to transfer heat by thermal conduction to the self-healing coating and a pair of electrodes adapted to apply a current to the resistive material so that the resistive material heats up by Joule effect.
8. The optical system of claim 1 , further comprising a temperature sensor arranged to measure the temperature of the self-healing coating.
9. The optical system of claim 1 , further comprising a controller of the heating component.
10. A method for repairing an optical lens of an optical system of claim 1 , the method comprising:
using the heating component to heat the self-healing coating at a temperature above the glass-transition temperature of the self-healing coating.