Antireflection coatings
AssigneeGentex Corporation
InventorsGeorge A. Neuman, Mario F. Saenger Nayver, John S. Anderson
Life of this patent
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Abstract
A transparency includes a first substrate having a first surface and a second surface and a second substrate having a third surface and a fourth surface. An optical coating is positioned on the fourth surface and has a refractive index real component n of greater than about 1.6 and an nk ratio greater than about 0.4, both as measured at 550 nm. The optical coating is configured to attenuate the transmission of the second substrate and not substantially affect the reflectivity of the fourth surface, as viewed from the first surface, such that the attenuation factor is less than about 50%.
Claims20
A transparency, comprising:
- a first substrate comprising a first surface and a second surface;
- a second substrate comprising a third surface and a fourth surface;
- an optical coating positioned on the fourth surface having a refractive index real component n of greater than about 1.6 and an nk ratio greater than about 0.4, both as measured at 550 nm, and
- wherein the optical coating is configured to attenuate the transmission of the second substrate such that the attenuation factor is less than about 50% and to not substantially affect the reflectivity of the fourth surface, as viewed from the first surface of said transparency.
Dependencies are inferred from the claim text.