Melanin polyvinyl alcohol plastic laminates for optical applications
OwnerJames Gallas, Melvin Eisnerinventors
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Abstract
The present invention relates to the use of water soluble melanin in solid plastic films of polyvinyl alcohol to be used in conjunction with other plastics to make laminated sheets or lenses. Such laminates will be used as filters to protect against photochemical damage from electromagnetic radiation.
Claims18
An apparatus for filtering ultraviolet and high energy visible light emitted from natural or artificial sources, comprising a polyvinyl alcohol (PVA) containing a hydrophilic polymer that is non-aggregated and optically clear.
An apparatus for filtering ultraviolet and high energy visible light emitted from natural or artificial sources, comprising a water soluble plastic film containing melanin that is non-aggregated and optically clear.
Dependencies are inferred from the claim text.