Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Patent
1992-04-23
1994-06-07
Turner, A. A.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
359359, 359586, 359589, 428212, 428336, 428426, 428432, 428697, 428701, 428437, 428702, 428913, G02B 1100
Patent
active
053188306
ABSTRACT:
The invention relates to a transparent coating on a transparent glass pane which may be a laminated glass pane such as an automobile windshield. The invention provides a two-layer coating made up of a first oxide film, e.g. a TiO.sub.2 -SiO.sub.2 mixed oxide film, which is in contact with the glass pane and has a thickness of 70-100 nm and a refractive index of 1.80-1.90 and an outer second oxide film, e.g. a SiO.sub.2 film, which has a thickness of 110-130 nm and a refractive index of 1.40-1.50. With respect to visible light obliquely incident on the coating side of the glass pane at an angle of 50-70 degrees with the normal, the reflectance of the coated glass pane becomes lower than that of the glass pane without coating by 4.5-6.5%. To reduce the reflectance of perpendicularly incident light the two-layer coating can be modified into a three-layer coating by interposing another oxide film, e.g. a TiO.sub.2 film, having a thickness of 130-160 nm and a refractive index of 2.05-2.30 between the above described first and second oxide films. The three-layer coating is nearly equivalent to the two-layer coating in the ability to reduce the reflectance of obliquely incident light.
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patent: 4940636 (1990-07-01), Brock et al.
patent: 5073451 (1991-12-01), Iida et al.
patent: 5110637 (1992-05-01), Ando et al.
Makita Kensuke
Takamatsu Atsushi
Central Glass Company Limited
Turner A. A.
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