Manufacture of contact lenses

Details Manufacture of contact lenses Manufacture of contact lenses

1975-09-29

1978-04-18

Vlachos, Leonidas

Turning

Process of turning

82 11, 82 12, 51101LG, 51105LG, B23B 100, B23B 540

Patent

active

040844587

ABSTRACT:
A method of manufacturing a contact lens by machining a lens blank in a suitable machinable condition. The concave lens surface is machined first and the circumferential edge surface is then machined with the blank mounted in the same position. The partly formed blank is repositioned and the convex lens surface machined.

REFERENCES:
patent: 3064531 (1962-11-01), Bullock
patent: 3301105 (1967-01-01), Morris
patent: 3423886 (1969-01-01), Schpak et al.
patent: 3630111 (1971-12-01), Hartford et al.
patent: 3738204 (1973-06-01), Spriggs
patent: 3763597 (1973-10-01), Schlotfeldt

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