Mold with film of 0-5 atom % hydrogen and molding method utilizi

Details Mold with film of 0-5 atom % hydrogen and molding method utilizi Mold with film of 0-5 atom % hydrogen and molding method utilizi

1992-12-31

1995-01-17

Jones, W. Gary

Glass manufacturing

Processes

Utilizing parting or lubricating layer

65286, 65305, 6537415, 653741, 425808, 427577, 427249, 4273722, 427135, 106 3828, C03B 1108

Patent

active

053822749

ABSTRACT:
A mold for use for press-molding an optical element, in which a molding surface of a mold base material is coated with a hard carbon film containing 0-5 atom% of hydrogen. It has a spin density of 1.times.10.sup.18 spin/cm.sup.3 or less and a film density of at least 1.5 g/cm.sup.3.

REFERENCES:
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patent: 4844785 (1989-07-01), Kitabatake et al.
patent: 4878074 (1989-11-01), Wahu et al.
patent: 4882827 (1989-11-01), Kusumi et al.
patent: 5225926 (1993-07-01), Cuomo
patent: 5270028 (1993-12-01), Tanabe
Journal of Non-Crystalline Solids 35 & 36 (1980), pp. 543-548, N. Wada et al., "Diamond-Like" 3-Fold Coordinated Amorphous Carbon. 1980.
F. W. Smith, "Optical Properties and Local Atomic Bonding In Hydrogenated Amorphous Carbon And Silicon-Carbon Alloys," Materials Science Forum, vols. 52 and 53, 1989, pp. 323-340.

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