Glass manufacturing – Processes – Reshaping or surface deformation of glass preform
Patent
1997-04-21
1998-06-02
Griffin, Steven P.
Glass manufacturing
Processes
Reshaping or surface deformation of glass preform
65 64, 65 26, 264 11, 264 132, C03B 1108
Patent
active
057592217
ABSTRACT:
A method of press-molding glass optical elements by press-molding glass, having a high melting point, at a temperature of 650.degree. C. and higher using a die for press-molding glass optical elements which includes a base material having a heat resistance and sufficient strength to withstand press-molding of optical glass elements, a cutting layer on the base material, and a surface protective layer on the cutting layer. The cutting layer is formed of an alloy film containing P and one metal selected from the group Ni, Co, and Fe, and one metal from the group Si, Ti, Cu, Zr, Nb, Mo, Ru, Rh, Pd, Hf, Ta, W, Re, Os, and Ir, or an alloy film containing Cu and 20 to 80 atom % of one metal selected from the group Ni, Co, Fe, Si, Ti, Zr, Nb, Mo, Ru, Rh, Pd, Hf, Ta, W, Re, Os, and Ir, or an alloy film containing Si and 20 to 80 atom % of one metal selected from the group Ni, Co, Fe, Cu, Ti, Zr, Nb, Mo, Ru, Rh, Pd, Hf, Ta, W, Re, Os, and Ir. The surface protective layer is formed of an alloy film of at least one metal selected from the group Pt, Pd, Ir, Rh, Os, Ru, Re, W, and Ta.
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Inoue Kenji
Kashiwagi Yoshinari
Kataoka Hidenao
Morimoto Satoru
Nakamura Shoji
Griffin Steven P.
Matsushita Electric - Industrial Co., Ltd.
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