Oxynitride glass, method of preparing the same and glass fiber

摘要

Transparent oxynitride glass has transmittance of at least 80%/mm in a wavelength region of 400 to 800 nm, with Si particles or Si alloy particles of not more than 1.0x109/cm3 in number. Glass fiber prepared by drawing this glass can attain strength which is by far superior to that of conventional oxide glass fiber, to be preferably applied to reinforcing fiber.