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US 9,102,561 B2Granted
Amorphous alloy, molding die, and method for producing optical element
AssigneeCanon Kabushiki Kaisha
InventorsHirotaka Fukushima, Satoko Midorikawa
Life of this patent
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Abstract
An amorphous alloy contains 54 at % or more and 79 at % or less Re, 8 at % or more and 28 at % or less Ir, and 11 at % or more and 18 at % or less Nb. A molding die includes a release film composed of the amorphous alloy. A method for producing an optical element, the method including press-molding a glass preform with the molding die.
Claims3
An amorphous alloy containing:
- 54 at % or more and 79 at % or less Re;
- 8 at % or more and 28 at % or less Ir;
- and
- 11 at % or more and 18 at % or less Nb.
1 more element
A molding die comprising a film composed of an amorphous alloy,
- wherein the amorphous alloy contains:
- 54 at % or more and 79 at % or less Re;
- 8 at % or more and 28 at % or less Ir;
- and
- 11 at % or more and 18 at % or less Nb.
2 more elements
A method for producing an optical element,
- the method including press-molding a glass preform with a molding die comprising a film composed of an amorphous alloy,
- wherein the amorphous alloy contains:
- 54 at % or more and 79 at % or less Re;
- 8 at % or more and 28 at % or less Ir;
- and
- 11 at % or more and 18 at % or less Nb.
3 more elements
Dependencies are inferred from the claim text.