A low-reflection coated substrate comprising: - a substrate; and - a low-reflection coating formed on at least one principal surface of the substrate, wherein the low-reflection coating is a porous film having a thickness of 80 to 800 nm, the low-reflection coating comprises fine silica particles being solid and spherical and having an average particle diameter of 80 to 600 nm; and a binder containing silica as a main component and containing a hydrophobic group, the fine silica particles are bound by the binder, wherein the fine silica particles are contained in an amount of 35 to 70 mass%, the silica of the binder is contained in an amount of 25 to 64 mass%, the hydrophobic group of the binder is contained in an amount of 0.2 to 10 mass%, and the low-reflection coating produces a transmittance gain of 1.5% or more when provided on the substrate, the transmittance gain representing an increase in average transmittance of the substrate provided with the low-reflection coating relative to the substrate unprovided with the low-reflection coating, the average transmittance being determined in the wavelength range of 380 to 850 nm. - a substrate; and - a low-reflection coating formed on at least one principal surface of the substrate, wherein the low-reflection coating is a porous film having a thickness of 80 to 800 nm, the low-reflection coating comprises fine silica particles being solid and spherical and having an average particle diameter of 80 to 600 nm; and a binder containing silica as a main component and containing a hydrophobic group, the fine silica particles are bound by the binder, wherein the fine silica particles are contained in an amount of 35 to 70 mass%, the silica of the binder is contained in an amount of 25 to 64 mass%, the hydrophobic group of the binder is contained in an amount of 0.2 to 10 mass%, and the low-reflection coating produces a transmittance gain of 1.5% or more when provided on the substrate, the transmittance gain representing an increase in average transmittance of the substrate provided with the low-reflection coating relative to the substrate unprovided with the low-reflection coating, the average transmittance being determined in the wavelength range of 380 to 850 nm. the low-reflection coating is a porous film having a thickness of 80 to 800 nm, the low-reflection coating comprises fine silica particles being solid and spherical and having an average particle diameter of 80 to 600 nm; and a binder containing silica as a main component and containing a hydrophobic group, the fine silica particles are bound by the binder, wherein the fine silica particles are contained in an amount of 35 to 70 mass%, the silica of the binder is contained in an amount of 25 to 64 mass%, the hydrophobic group of the binder is contained in an amount of 0.2 to 10 mass%, and the low-reflection coating produces a transmittance gain of 1.5% or more when provided on the substrate, the transmittance gain representing an increase in average transmittance of the substrate provided with the low-reflection coating relative to the substrate unprovided with the low-reflection coating, the average transmittance being determined in the wavelength range of 380 to 850 nm.