Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1997-09-04
2000-05-02
Epps, Georgia
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
351 41, G02C 702
Patent
active
060564016
ABSTRACT:
A spectacle lens having a geometric center includes front and rear surfaces, each formed as a refractive surface. At least one of the front and rear surfaces is formed as an aspherical surface in rotational symmetry about an axis of symmetry. The axis of symmetry is separated from the geometric center.
REFERENCES:
patent: Re17435 (1929-09-01), Tilyer
patent: 4055379 (1977-10-01), Winthrop
patent: 5050979 (1991-09-01), Shinohara
patent: 5050980 (1991-09-01), Shinohara
patent: 5270746 (1993-12-01), Kato et al.
patent: 5353072 (1994-10-01), Tejima et al.
patent: 5648832 (1997-07-01), Houston et al.
patent: 5767939 (1998-09-01), Komatsu et al.
patent: 5805263 (1998-09-01), Reymondet et al.
patent: 5825455 (1998-10-01), Fecteau et al.
Asahi Kogaku Kogyo Kabushiki Kaisha
Epps Georgia
Schwartz Jordon M.
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