Die for press-molding optical elements

Details Die for press-molding optical elements Die for press-molding optical elements

1997-05-12

2000-01-04

Silverman, Stanley S.

Glass manufacturing

Apparatus made of special material

Metal-nonmetal composite

425808, 264 11, 264 132, 264 27, 249116, 6537412, 6537413, 65305, 65 26, 65 64, C03B 1316, C03B 2300, C03B 1100, C03B 3500

Patent

active

060097280

ABSTRACT:
A die for press-molding glass optical elements comprising (a) a base material having heat resistance and sufficient strength to withstand press-molding of optical glass elements; (b) a film on said base material comprising an alloy film containing B and one metal selected from the group consisting of Ni, Co, and Fe, and one metal selected from the group consisting of Si, Ti, Cu, Zr, Nb, Mo, Ru, Rh, Pd, Hf, Ta, W, Re, Os, and Ir, to form a cutting layer; and (c) a surface protective layer on top of said cutting layer made of an alloy film comprising at least one metal selected from the group consisting of Pt, Pd, Ir, Rh, Os, Ru, Re, W, and Ta.

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Theodore L. Brown and H. Eugene Lemay, Jr., "Chemistry: The Central Science, 2nd Edition", pp. 44-46 and 150-157, 1981.

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