Optical: systems and elements – Light interference – Produced by coating or lamina
Patent
1990-12-19
1993-11-30
Arnold, Bruce Y.
Optical: systems and elements
Light interference
Produced by coating or lamina
359585, 359586, 359588, 359589, 359884, G02B 528, B60R 108
Patent
active
052670813
ABSTRACT:
A rearview mirror suitable for vehicles, especially motor vehicles, is composed of a transparent substrate, preferably of soda silica glass and a rear reflection coating comprising a metal mirror layer, preferably chromium, and a dielectric triple interference layer system placed between the metal mirror layer and the transparent substrate. The triple interference layer system comprises, in contact with the metal layer, a dielectric layer having a high refractive index, e.g., titanium dioxide, a next layer having a low refractive index, e.g., silicon dioxide, and next a dielectric layer having a medium refractive index, e.g., a mixed TiO.sub.2 and SiO.sub.2 layer. With the selection of suitable layer thicknesses, a total reflection of at least 40% and a blue reflection tint, independent of the viewing angle, are attained.
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patent: 4793669 (1988-12-01), Perilloux
patent: 4805989 (1989-02-01), Nakajima
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Glass, Science and Technology, Uhlmann and Kreidl, vol. 2 1984 pp. 267-274.
Arnold Bruce Y.
Deutsche Spezialglas AG
Shafer R. D.
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