Window glass employing titanium dioxide photocatalyst
First Claim
1. A window glass comprising:
- a transparent plate having first and second opposing surfaces and formed of a soda lime glass; and
a titanium dioxide film having a first surface deposited on at least one of the surfaces of said transparent plate, said titanium dioxide film having a photocatalytic activity, a linear transmittance of at least 50% for light having a wavelength of 550 nm and a linear transmittance of 50% or less for light having a wavelength of 350 nm.
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Accused Products
Abstract
A titanium dioxide film (2) having at least photocatalytic activity, whose light linear transmittance corresponding to light having a wavelength of 550 nm is not less than 50% and whose thickness is 0.1 to 5 μm or so, is formed on a transparent substrate (1) constituted by a glass plate or the like. Preferably, a precoat film (3), which has optical transmissivity and is constituted by a SiO2 film having a thickness of 0.02 to 0.2 μm or so, is provided between the transparent substrate (1) and the titanium dioxide film (2). Thereby, excellent photocatalytic action and optical transmissivity can be obtained. Moreover, members composing various structures such as a glass window, which are especially required to have optical transparency, can be further provided with photocatalytic activities.
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Citations
10 Claims
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1. A window glass comprising:
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a transparent plate having first and second opposing surfaces and formed of a soda lime glass; and
a titanium dioxide film having a first surface deposited on at least one of the surfaces of said transparent plate, said titanium dioxide film having a photocatalytic activity, a linear transmittance of at least 50% for light having a wavelength of 550 nm and a linear transmittance of 50% or less for light having a wavelength of 350 nm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification