Transparent glass article that is locally colored in its bulk, an an associated method
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United States of America Patent
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Mar 27, 2018
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app pub date -
Apr 22, 2013
filing date -
Apr 23, 2012
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Abstract
An industrial decoration method in which a colored pattern (11) is made in the bulk of an article (1) made of transparent glass of composition including at least one metallic oxide of silver, of gold, or of copper, said method including the following successive steps:
- a step of laser irradiating the zone of said glass article that is to be colored; anda final step of annealing the irradiated glass;and being characterized in that a glass composition is used that includes cerium and that has a total content of antimony plus tin that is less than 100 ppm, and in that the step of laser irradiating the zone that is to be colored is performed with laser irradiation having a pulse duration that is less than or equal to 10−11 s, while delivering power to the glass at greater than 1012 W/cm2, and more preferably lying in the range 1012 W/cm2 to 5×1014 W/cm2 for decorating and marking glass articles.
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