Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1997-10-08
1999-07-27
Epps, Georgia
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
G02C 704
Patent
active
059299690
ABSTRACT:
An ophthalmic lens provides a cumulative ratio of distance to near focal length that is predominantly distance correction under high illumination, nearly evenly divided between distance and near correction under moderate illumination, and favoring again distance vision correction under low level illumination. The lens is specifically adjusted to match the patient's pupil size as a function of illumination level, in the preferred embodiment by applying pupil size parameters as a function of age. This lens has the properties of matching both the distribution of near and distance focal vision correction to the type of human activity typically undertaken in various illumination conditions, as well as matching particular lens dimensions to suit the size of the pupil as a function of illumination intensity.
REFERENCES:
patent: 4704016 (1987-11-01), de Carle
patent: 4890913 (1990-01-01), de Carle
patent: 4923296 (1990-05-01), Erickson
patent: 5002382 (1991-03-01), Seidner
patent: 5020898 (1991-06-01), Townsley
patent: 5024517 (1991-06-01), Seidner
patent: 5050981 (1991-09-01), Roffman
patent: 5054905 (1991-10-01), Cohen
patent: 5151723 (1992-09-01), Tajiri
patent: 5158572 (1992-10-01), Nielson
patent: 5191365 (1993-03-01), Stoyan
patent: 5192317 (1993-03-01), Kalb
patent: 5198844 (1993-03-01), Roffman et al.
patent: 5348396 (1994-09-01), Roffman et al.
patent: 5349395 (1994-09-01), Stoyan
patent: 5404183 (1995-04-01), Seidner
patent: 5406341 (1995-04-01), Blum et al.
patent: 5408278 (1995-04-01), Christman
patent: 5408281 (1995-04-01), Zhang
patent: 5422687 (1995-06-01), Tanaka et al.
patent: 5430504 (1995-07-01), Muckenhirm et al.
patent: 5436678 (1995-07-01), Carroll
patent: 5440359 (1995-08-01), Bloch-Malem
patent: 5448312 (1995-09-01), Roffman et al.
patent: 5485228 (1996-01-01), Roffman et al.
Epps Georgia
Johnson & Johnson Vision Products Inc.
Schwartz Jordan M.
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