Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Reexamination Certificate
2005-05-31
2008-03-04
Sugarman, Scott J. (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
C351S177000
Reexamination Certificate
active
07338163
ABSTRACT:
The invention relates to an ophthalmic lens for long-sighted and intermediate vision comprising a complex surface provided with an optical centre, a substantially umbilicated meridian line and an average size sphere progression on the top surface equal to or greater than 0.50 diopters. The complex surface is provided in the top part thereof with a long-sighted vision area which is formed by cylinder points equal to or less than 0.25 diopters and covers an angular sector focused on the optical centre and whose angle is equal to 160°. Said complex surface also comprises an average size substantially constant sphere on the meridian line in the long-sighted vision area and a progression length equal to or less than 12 mm. Said progression length is defined as a vertical distance between the optical centre and a median point for which the average sphere if greater than 85% of progression on the average sphere in the optical centre. The inventive lens is suitable for driving and prescribed to persons having additional prescription greater than a power progression, whereby a correction adaptable to the power prescription of a longsighted vision person is provided in the top part of the lens. The lower part of the lens ensures the correction needed for an intermediate vision person.
REFERENCES:
patent: 4537479 (1985-08-01), Shinohara et al.
patent: 6102544 (2000-08-01), Baudart et al.
patent: 6116734 (2000-09-01), Pedrono et al.
patent: 2704327 (1994-10-01), None
patent: 2769997 (1999-04-01), None
patent: 2277997 (1994-11-01), None
Carimalo Celine
Guilloux Cyril
Roland Eric
Essilor International "Compagnie Generale d'Optique"
Fish & Richardson P.C.
Sugarman Scott J.
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