Device and process for marking an ophthalmic lens with a pulsed laser of wavelength and energy selected per pulse
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United States of America Patent
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Oct 30, 2018
Grant Date -
Jul 21, 2016
app pub date -
Sep 19, 2014
filing date -
Sep 20, 2013
priority date (Note) -
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Abstract
A device for marking an ophthalmic lens (3), the lens (3) being made of at least one preset material, includes a laser (1) configured to produce permanent engravings on the lens (3) and configured to emit a focused beam of pulsed ultraviolet laser radiation that includes at least one radiation wavelength ranging between 200 nm and 300 nm, has a pulse length ranging between about 0.1 ns and about 5 ns, and has an energy per pulse ranging between about 5 μJ and about 100 μJ. A laser marking process configured to produce permanent engravings on an ophthalmic lens (3) via this device is also described.
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