Neutral color antireflective glass substrate and method for manufacturing the same
AssigneesAgc Glass Europe, Agc Glass Company North America, AGC Inc., Quertech Ingenierie
InventorsBenjamine Navet, Pierre Boulanger, Denis Busardo
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Abstract
A method for manufacturing neutral color antireflective glass substrates by ion implantation, the method including ionizing a N2 source gas so as to form a mixture of single charge and multicharge ions of N, forming a beam of single charge and multicharge ions of N by accelerating with an acceleration voltage A between 20 kV and 25 kV and setting the ion dosage at a value between 6×1016 ions/cm2 and −5.00×1015×A/kV+2.00×1017 ions/cm2. A neutral color antireflective glass substrates including an area treated by ion implantation with a mixture of simple charge and multicharge ions according to the method.
Claims16
A method for producing a neutral color antireflective glass substrate, the method comprising:
- a) providing a N2 source gas;
- b) ionizing the N2 source gas so as to form a mixture of single charge ions and multicharge ions of N;
- c) accelerating the mixture of single charge ions and multicharge ions of N with an acceleration voltage A so as to form a beam of single charge ions and multicharge ions, wherein the acceleration voltage A is comprised between 20 kV and 25 kV and an ion dosage D is comprised between 7.5×1016 ions/cm2 and −5.00×1015×A/kV+2.00×1017 ions/cm2;
- d) providing a glass substrate;
- and
- e) positioning the glass substrate in a trajectory of the beam of single charge and multicharge ions of N,
- wherein the glass substrate has a neutral color reflectance such that the reflectance is −1≤a*≤1 and −1≤b≤1 as measured under illuminant D65 using 10° observer angle on a side of the substrate that is treated as specified by the International Commission on Illumination after the mixture of single charge ions and multicharge ions of N has been implanted in the glass substrate.
A method, comprising employing a mixture of single charge and multicharge ions of N to decrease the reflectance of a glass substrate and at the same time keep a color in reflectance neutral, the mixture of single charge and multicharge ions being implanted in the glass substrate with an ion dosage D and an acceleration voltage A effective to reduce the reflectance of the glass substrate and at the same time keep the color in reflectance neutral,
- wherein the acceleration voltage A is between 20 kV and 25 kV and the ion dosage D is between 7.5×1016 ions/cm2 and −5.00×1015×A/kV+2.00×1017 ions/cm2 wherein the glass substrate has a neutral color in reflectance such that the reflectance is −1<a*<1 and −1<b*<1 as measured under illuminant D65 using 10° observer angle on a side of the substrate that is treated as specified by the International Commission on Illumination after the mixture of single charge ions and multicharge ions of N has been implanted in the glass substrate.
Dependencies are inferred from the claim text.