Glass pane with reflectance reducing coating
First Claim
1. A reflectance-reducing glass pane comprising:
- a transparent glass substrate having first and second major surfaces opposed to each other;
a first reflectance-reducing coating formed directly on the first major surface of said glass substrate, said first coating having at least two metal-oxide layers which are different in refractive index; and
a surface reflectance-reducing coating formed directly on the second major surface of said glass substrate, said second coating having a refractive index within a range from 1.43 to 1.47 and a thickness within a range from 105-130 nm, and being made of a member selected from the group consisting of SiO2 and a mixture of SiO2 and another metal oxide.
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Accused Products
Abstract
The invention relates to a reflectance-reducing glass pane which may be a laminated glass pane such as an automobile front windshield. The invention provides a reflectance-reducing glass pane including: a transparent glass substrate having first and second major surfaces opposed to each other; a first reflectance-reducing coating formed on the first major surface of the glass substrate; and a second reflectance-reducing coating formed on the second major surface of the glass substrate. The first coating has at least two metal-oxide layers which are different in refractive index. The second coating has a refractive index of up to 1.50 and is made of one selected from the group consisting of SiO2 and a mixture of SiO2 and another metal oxide. The reflectance-reducing glass pane optionally further includes a third water-repellent coating which is formed on the second coating. The third coating comprises a silane compound containing a polyfluoroalkyl group. The reflectance of the glass pane is substantially low, with respect to a visible light incident on the glass pane from a side of the first coating at an incidence angle within a range from 40 to 80 degrees.
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Citations
15 Claims
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1. A reflectance-reducing glass pane comprising:
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a transparent glass substrate having first and second major surfaces opposed to each other; a first reflectance-reducing coating formed directly on the first major surface of said glass substrate, said first coating having at least two metal-oxide layers which are different in refractive index; and a surface reflectance-reducing coating formed directly on the second major surface of said glass substrate, said second coating having a refractive index within a range from 1.43 to 1.47 and a thickness within a range from 105-130 nm, and being made of a member selected from the group consisting of SiO2 and a mixture of SiO2 and another metal oxide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A reflectance-reducing glass pane comprising:
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a transparent glass substrate having first and second major surfaces opposed to each other; a first reflectance-reducing coating formed directly on the first major surface of said glass substrate, said first coating having at least two metal-oxide layers which are different in refractive index; a second reflectance-reducing coating formed directly on the second major surface of said glass substrate, said second coating having a refractive index within a range from 1.43 to 1.47 and a thickness within a range from 105-130 nm, and being made of a member selected from the group consisting of SiO2 and a mixture of SiO2 and another metal oxide; and a third water-repellent coating formed directly on the second coating, the third coating comprising a silane compound containing a polyfluoroalkyl group. - View Dependent Claims (14, 15)
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Specification