Multifocal lens method

Details Multifocal lens method Multifocal lens method

C - Chemistry, Metallurgy

03

B

49/82.1

C03B 23/22 (2006.01)

Patent

CA 2032113

ABSTRACT There is disclosed a method of producing a multifocal, ophthalmic lens blank wherein a glass major element is employed that is substantially thinner than previously used major elements, except in a zone where a countersink is formed in the major element surface.

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