Method of producing antireflective coatings on acrylic glasses,

Details Method of producing antireflective coatings on acrylic glasses, Method of producing antireflective coatings on acrylic glasses,

1977-12-21

1979-07-17

Van Balen, William J.

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Structurally defined web or sheet

Including components having same physical characteristic in...

350164, 350175NG, 351166, 427164, 427248J, 428432, 428522, G02B 528

Patent

active

041615603

ABSTRACT:
An optical body and a method of producing same comprising a transparent plastic substrate composed of an acrylate, preferably polymethylmethacrylate, depositing a first coat having a high refraction index on the substrate by vaporizing an oxide mixture of substantially zirconium dioxide with a content of 4 to 15 percent weight percent of aluminum oxide and depositing a second coat having a low refractive index by devaporization in a vacuum of a borosilicate glass containing less than 5 weight-percent of alkali metal oxides. The application of at least the first coat is performed in an oxidizing residual gas atmosphere.

REFERENCES:
patent: 3934961 (1976-01-01), Itoh et al.
patent: 3953652 (1976-04-01), Addiss, Jr.
patent: 3984581 (1976-10-01), Dobler et al.
patent: 3991234 (1976-11-01), Chang et al.

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