G - Physics – 02 – B
Patent
G - Physics
02
B
154/109, 204/96.
G02B 1/10 (2006.01) C03C 17/36 (2006.01) C23C 14/34 (2006.01) G02B 5/28 (2006.01)
Patent
CA 1297069
ABSTRACT OF THE DISCLOSURE A transparent article comprising a transparent base, at least four coated layers, and a top protective layer is disclosed. The coated layers include a first dereflecting region, a transparent layer of silver or other metal, and a second dereflecting region comprising a layer of titanium dioxide and a layer of another dielectric material. A titanium dioxide layer may also be a component of the first dereflecting region. Each dereflecting region that includes a titanium dioxide layer also comprises a layer of a transparent oxide or other dielectric material having an index of refraction intermediate between about 2.7 the approximate index or titanium divide, and the index of the nearby base or top layer, respectively. The intermediate index material is preferably zinc oxide because this material can be relatively quickly and inexpensively deposited by reactive quickly. Also disclosed is a method for depositing the coated layers by sputtering and reactive puttering of titanium and silver, zinc or other materials. The coating is useful as a component of a laminated window, particularly on electrically heated windshields for automobiles.
519290
Bernardi Roy L.
Jacobson Donald V.
Ryan Francis Walter
Gowling Lafleur Henderson Llp
The Boc Group Inc.
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