Glasscheibe mit reflexionenverringernden Schicht.

摘要

The invention relates to a transparent coating on a transparent glass pane which may be a laminated glass pane (10) such as an automobile windshield. The invention provides a two-layer coating (20) made up of a first oxide film (22), e.g. a TiO2-SiO2 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 (24), e.g. a SiO2 film, which has a thickness of 110-130 nm and a refractive index of 1.40-1.50. With respect to visible light (28) obliquely incident on the coating side of the glass pane at an angle of 50-70 degrees with the normal (26), 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 (20) can be modified into a three-layer coating (20A) by interposing another oxide film (23), e.g. a TiO2 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 (22; 24). The three-layer coating is nearly equivalent to the two-layer coating in the ability to reduce the reflectance of obliquely incident light.