Glass composition
Abstract
Abstract A glass composition includes PbO falling at the range of 0.5 to 3% by weight as a component for absorbing the X-rays, and particularly, the glass composition is capable of including amount more than 1% without the discoloration due to the electron beams. CeO2 is added to the glass composition to compensate PbO for the discoloration due to the irradiation of the X-rays, and the amount of CeO2 is selected at the range of 0.2 to 0.6% by weight. The upper limit of CeO2 is restricted by the reason why an addition more than 0.6% comes bad in the chromaticity of the panel glass. BaO, WO3 and if desired SrO except PbO are added to the glass composition as the X-ray absorption components. The total amount of the X-ray, absorption components is more than 15% by weight to maintain the predetermined value of the X-ray absorption coefficient.
Inventors
- 👤 Masamichi Wada
- 👤 Iwao Ishida
- 👤 Isamu Nakagawa
Bibliographic Details
Claims Analysis
Total Claims: 10References Cited (Backward Citations)
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