PRODUCTION METHOD OF GLASS MEMBER, AND GLASS MEMBER

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PROBLEM TO BE SOLVED : To provide a production method of a glass member, with which the glass member having optical characteristics of glass changed such that an antireflection effect is obtained by forming a microstructure with a dimension smaller than the wavelength of light on a surface of an optical member and controlling the refractive index in a pseudo manner, is easily produced, and to provide the glass member.SOLUTION : Since a first step to plasma-etch a surface of a glass substrate 2 including one or more elements selected from an alkali metal, an alkaline earth metal, and a rare earth metal by using a fluorine-based gas is included in a production method, a fluoride layer 4 is formed on the surface of the glass substrate 2 in the first step, the fluoride layer 4 functions as a mask, and a part covered with the mask remains without being plasma-etched and becomes a protrusion 3 having the fluoride layer 4 on the tip thereof. Thereby a glass member 1 having optical characteristics of glass changed is easily produced only by a plasma etching treatment.COPYRIGHT : (C)2015, JPO&INPIT