Protective barrier for safety glazing
AssigneeRacing Optics, Inc.
InventorsBart E. Wilson, Stephen S. Wilson, Seth Wilson
Life of this patent
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Abstract
A protective barrier affixable to a curved substrate comprises a stack of two or more lenses, each of the two or more lenses including a polyethylene terephthalate (PET) film, a hard coat on a first side of the PET film, and an adhesive layer on a second side of the PET film opposite the first side. The stack of two or more lenses may have a modulation transfer function that exhibits a contrast value greater than 75% for a spatial resolution of one line-pair per 0.0003 radians at 65 degrees angle of incidence. Heat and pressure may be applied to conform the stack of two or more lenses to the shape of the curved substrate.
Claims20
A protective barrier affixable to a curved substrate, the protective barrier comprising a stack of two or more lenses, each of the two or more lenses including a polyethylene terephthalate (PET) film, a hard coat on a first side of the PET film, and an adhesive layer on a second side of the PET film opposite the first side, the stack of two or more lenses having a modulation transfer function that exhibits a contrast value greater than 75% for a spatial resolution of one line-pair per 0.0003 radians at 65 degrees angle of incidence.
A method comprising:
- stacking two or more lenses, each of the two or more lenses including a polyethylene terephthalate (PET) film, a hard coat on a first side of the PET film, and an adhesive layer on a second side of the PET film opposite the first side, the stack of two or more lenses having a modulation transfer function that exhibits a contrast value greater than 75% for a spatial resolution of one line-pair per 0.0003 radians at 65 degrees angle of incidence;
- placing the stack of two more lenses on a curved substrate with the adhesive of a first lens of the stack in contact with the curved substrate;
- and
- applying heat and pressure to conform the stack of two or more lenses to the shape of the curved substrate.
Dependencies are inferred from the claim text.