Patent ID: 7087307
Filing Date: 2006-08-08
Classification: C03B,C03C,H01L,Y02E

Abstract:
1. A glass sheet formed on molten tin, wherein a difference between a visible light reflectance of a surface formed in contact with the molten tin and a visible light reflectance of a surface on the opposite side thereof is not greater than 0.25%; wherein, when the glass sheet's thickness is 4 mm, a light transmittance at 540 nm wavelength is at least 91.5%, and a light transmittance of at 450 nm wavelength is at least 91.0%, and wherein after irradiating UV light for 6 hours as specified in the radiation-proofing test according to Japanese Industrial Standard (JIS) R3212, a light transmittance at 540 nm wavelength is at least 91.0% and a light transmittance at 450 nm wavelength is at least 90.5%; wherein a maximum value of tin oxide concentration in terms of SnO wherein a maximum value of iron oxide concentration in terms of Fe