Step gradient anti-iridescent coatings

Details Step gradient anti-iridescent coatings Step gradient anti-iridescent coatings

1991-06-24

1992-12-01

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

359586, 428212, 428426, 428432, 428698, 428699, 428701, 428702, 428913, B32B 1706

Patent

active

051680033

ABSTRACT:
A glazing article comprises a substrate bearing a substantially transparent coating comprising an optically functional layer and a thinner anti-iridescence layer undercoat mediate the optically functional layer and the substrate. The anti-iridescence layer eliminates or substantially reduces iridescence and, in addition, is readily designed to make the overall coating colorless or to provide a substantially uniform, muted color. The anti-iridescence layer comprises a high refractive index zone on the substrate, having a refractive index higher than that of the substrate. Multiple gradient step zones are stacked on the high refractive index zone, including a low refractive index zone. A second gradient step zone having a refractive index higher than that of the first gradient step zone is positioned on the low refractive index zone, such that the low refractive index zone is directly sandwiched between the two higher refractive index zones. Anti-iridescence is provided for a wide variety of optically functional layers without significant impairment of the optical performance thereof.

REFERENCES:
patent: 2758510 (1956-08-01), Auwarter
patent: 2932592 (1960-04-01), Cameron
patent: 3176574 (1965-04-01), Socha
patent: 3378396 (1968-04-01), Zaromb
patent: 3990784 (1976-11-01), Gelber
patent: 4187336 (1980-02-01), Gordon
patent: 4261645 (1981-04-01), Sawamura et al.
patent: 4264133 (1981-04-01), Sakurai
patent: 4308316 (1981-12-01), Gordon
patent: 4310584 (1982-01-01), Cooper et al.
patent: 4377613 (1983-03-01), Gordon
patent: 4419386 (1983-12-01), Gordon
patent: 4440822 (1984-04-01), Gordon
patent: 4556599 (1985-12-01), Sato et al.
patent: 4581280 (1986-04-01), Taguchi et al.
patent: 4805989 (1989-02-01), Nakajima
Hamburg et al., "Evaporated Sn-doped In.sub.2 O.sub.3 films: Basic Optical properties and applications to energy-efficient windows", J. Appl. Phys. 60(11), Dec. 1, 1986.
Berning, "Principls of design of architrectural coatings", Applied Optics, vol. 22, p. 4127, Dec. 15, 1983.
MacLeod, "Thin-Film Optical Filters", Adam Hilger Ltd., London, 1969, pp. 37-43.
Vasicek, A., Optics of Thin Films, North-Holland Publishing Company, Amsterdam, 1960.

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