Mould for moulding glass optical components with a high...

Details Mould for moulding glass optical components with a high... Mould for moulding glass optical components with a high...

C - Chemistry, Metallurgy

03

B

49/65

C03B 40/02 (2006.01) C03B 9/48 (2006.01) C03B 11/08 (2006.01) C03B 40/00 (2006.01)

Patent

CA 1286504

ABSTRACT A mould for moulding glass optical components, for example lenses, with a high quality surface finish has one or more mould surfaces formed by a material comprising at least one of a metal oxide or a metal dioxide, When the material includes more than a single metal oxide or dioxide, it may comprise a mixture of metal oxides, a mixture of metal dioxides, or a mixture of a metal oxide and a metal dioxide. The oxide, dioxide or mixture can be present in monocrystalline or polycrystalline form or present in the form of a sintered ceramic. Preferred constituents of the material are Al2O3, Cr2O3, MgAl2O4 and/or ZrO2.

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