CHEMICALLY STRENGTHENED GLASS AND PRODUCTION METHOD FOR CHEMICALLY STRENGTHENED GLASS

摘要

The purpose of the present invention is to provide a high-transmittance (i.e., low-reflectivity) chemically strengthened glass for which reduction in the strength of the glass can be effectively suppressed, even when chemical strengthening is performed. The present invention relates to a chemically strengthened glass that has, in a surface layer thereof, a compressive stress layer that is formed by means of an ion exchange method. The chemically strengthened glass includes sodium and boron and has a delta transmittance of +0.1% or more. A straight line that linearly approximates the hydrogen concentration Y at a depth X from the outermost surface of the glass satisfies a specific relational expression for X = 0.1-0.4 μm.