Blue light filter lenses
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United States of America Patent
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May 22, 2018
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app pub date -
Feb 26, 2016
filing date -
Feb 26, 2016
priority date (Note) -
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Abstract
The disclosure relates to ophthalmic lenses consisting of a front surface coating section made of a multi-layer structure that reflects digital blue light, a lens section, and a rear surface coating section made of a multi-layer structure that absorbs digital blue light while allowing higher energy blue light to pass through. The lens equalizes the light energy differences of the light exiting from the rear surface of the lens, offering a hi level of contrast perception and sharpness. The ophthalmic lenses employ photonic crystal thin films made from fully transparent nanostructures. The lenses fully block UV light while at the same time efficiently filtering blue light emitted from digital devices and monitors.
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