Glass pane with reflectance reducing coating and combiner of head-up display system

A coated glass pane, comprising a transparent glass substrate and a fluoride-free coating formed on a major surface of the glass substrate, the fluoride-free coating comprising:

• a first layer which is a transparent oxide film in direct contact with the major surface of the glass substrate and has a thickness of 70-100 nm and a refractive index in the range from 1.80 to 1.95, said first layer having a major portion and a minor portion which is exposed and adapted to be used as a combiner of a head-up display system;
• a second layer which is a transparent oxide film formed on the major portion of said first layer so as to expose the minor portion of said first layer, said second layer having a thickness of 130-165 nm and a refractive index in the range from 2.10 to 2.30;
• and
• a third layer which is a transparent oxide film formed on said second layer so as to expose the minor portion of said first layer, said third layer having a thickness of 110-130 nm and a refractive index in the range from 1.40 to 1.50, said third layer together with said second layer and the major portion of said first layer being adapted to be used as a reflectance reducing coating.

A coated glass pane, comprising a transparent glass substrate and a fluoride-free coating formed on a major surface of the glass substrate, the fluoride-free coating comprising:

• a first layer which is a transparent oxide film in direct contact with the major surface of the glass substrate and has a thickness of 70-230 nm and a refractive index in the range from 1.80 to 2.10, said first layer having minor and major portions;
• a second layer which is a transparent oxide film formed on the major portion of said first layer and has a thickness of 110-130 nm and a refractive index in the range from 1.40 to 1.50, said second layer together with the major portion of said first layer being adapted to be used as a reflectance reducing coating;
• and
• an additional film which is a transparent oxide film formed on the minor portion of said first layer so as to fully or partly cover the minor portion of said first layer, said additional film having a thickness of 50-200 nm and a refractive index in the range from 2.50 to 2.50 and being adapted to be used as a wavelength-selective combiner of a head-up display system.

A coated glass pane, comprising a transparent glass substrate and a fluoride-free coating formed on a major surface of the glass substrate, the fluoride-free coating comprising:

• a first layer which is a transparent oxide film in direct contact with the major surface of the glass substrate and has a thickness of 70-100 nm and a refractive index in the range from 1.80 to 1.95, said first layer having minor and major portions;
• a second layer which is a transparent oxide film formed on the major portion of said first layer and has a thickness of 130-165 nm and a refractive index in the range from 2.10 to 2.30;
• a third layer which is a transparent oxide film formed on s said second layer and has a thickness of 110-130 nm and a refractive index in the range from 1.40 to 1.50;
• and
• an additional film which is a transparent oxide film formed on the minor portion of said first layer so as to fully or partly cover the minor portion of said first layer, said additional film having a thickness of 50-200 nm and a refractive index in the range from 2.00 to 2.50 and being adapted to be used as a wavelength-selective combiner of a head-up display system.