Process and an apparatus for making plastic material...

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks

Reexamination Certificate

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Reexamination Certificate

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07083279

ABSTRACT:
A process and an apparatus are used for making spectacle lenses from plastic material. The spectacle lenses are worked by working plastic material blanks as a function of data representing the surface of the finished spectacle lens as well as work process parameters. The plastic material blanks are worked in one of a plurality of de-centralized units. For individualized spectacle lenses the data are computed in a central unit as first data and are transmitted to the decentralized unit, and for non-individualized spectacle lenses the data are read out of a first memory in the decentralized unit.

REFERENCES:
patent: 4781452 (1988-11-01), Ace
patent: 6637880 (2003-10-01), Yamakaji et al.
patent: 6871955 (2005-03-01), Yamakaji et al.
patent: 0 092 364 (1983-10-01), None
patent: 0 299 690 (1989-01-01), None
patent: 0 576 268 (1993-12-01), None

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