| 摘要 |
There are provided a glass key having a character or symbol marked in an enduring state and a marking method for creating such a glass key. A glass key has a character or a symbol marked on the surface or in the glass medium of the key top. A laser beam belonging to an infrared band having a wavelength of about 1100 nm or below, visible light band, or ultraviolet light band is intermittently applied while focused on the surface of the transparent glass key top or inside of the key top including the upper position, intermediate position, lower position, or other desired position, so that a plenty of fine cracks are formed as a set to represent a character or a symbol.
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