To make it possible to protect the eyeballs against the electromagnetic waves radiated from office automation apparatus by providing spectacle glass formed by providing the one surface of a glass material with a transparent conductive film consisting essentially of indium oxide and tin oxide.
The spectacle glass is constituted by laminating a first AR coating layer 2, an ITO film 3 and a second AR coating layer 4 on the surface of the glass material 1. The glass material 1 has a central thickness of 1.5 to 1.7 mm and is worked as a lens at need. The compsn. of the glass body is not particularly limited. The glass body contains rare earth elements (cerium Ce, neodymium Nd, praseodymium Pr). As a result, a deep valley is formed on the upper side of a wavelength 550 nm which is the peak of visual sensitivity in a transmission characteristic and a high-contrast lens having the improved visibility of a visible region is embodied. Since the spectacle glass has electrical conductivity, the direct irradiation of the eyeballs with the electromagnetic waves from the office automation apparatus may be prevented.
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